Remove unused translations

2025-10-15 10:19:04 +00:00 · 2024-02-07 14:19:42 +01:00
2376 changed files with 77855 additions and 236607 deletions
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,25 +11,13 @@
 version: 2.1
 orbs:
  aws-cli: circleci/aws-cli@2.0.6
-  macos: circleci/macos@2.5.1 # For Rosetta (see below)
-  node: circleci/node@5.2.0 # For a recent npm version (see below)
-  win: circleci/windows@5.1.0
 jobs:
-  # Build the **entire** app for macOS (including the GDevelop.js library).
+  # Build the **entire** app for macOS.
  build-macos:
    macos:
-      xcode: 16.4.0
-    resource_class: m4pro.medium
+      xcode: 14.2.0
    steps:
      - checkout
-      # Install Rosetta for AWS CLI and disable TSO to speed up S3 uploads (https://support.circleci.com/hc/en-us/articles/19334402064027-Troubleshooting-slow-uploads-to-S3-for-jobs-using-an-m1-macOS-resource-class)
-      - macos/install-rosetta
-      # - run: sudo sysctl net.inet.tcp.tso=0
-
-      # Install a recent version of npm to workaround a notarization issue because of a symlink made by npm: https://github.com/electron-userland/electron-builder/issues/7755
-      # Node.js v20.14.0 comes with npm v10.7.0.
-      - node/install:
-          node-version: "20.14.0"

      # System dependencies (for Emscripten and upload)
      - run:
@@ -47,9 +35,9 @@ jobs:
      # GDevelop.js dependencies
      - restore_cache:
          keys:
-            - gd-macos-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}-{{ checksum "GDJS/package-lock.json" }}
+            - gd-macos-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}
            # fallback to using the latest cache if no exact match is found
-            - gd-macos-nodejs-dependencies-
+            - gd-macos-nodejs-dependencies---

      - run:
          name: Install GDevelop.js dependencies
@@ -70,8 +58,7 @@ jobs:
            - newIDE/electron-app/node_modules
            - newIDE/app/node_modules
            - GDevelop.js/node_modules
-            - GDJS/node_modules
-          key: gd-macos-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}-{{ checksum "GDJS/package-lock.json" }}
+          key: gd-macos-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}

      # Build GDevelop IDE (seems like we need to allow Node.js to use more space than usual)
      # Note: Code signing is done using CSC_LINK (see https://www.electron.build/code-signing).
@@ -88,37 +75,15 @@ jobs:
      - store_artifacts:
          path: newIDE/electron-app/dist

-
      # Upload artifacts (AWS)
      - run:
          name: Deploy to S3 (specific commit)
-          command: |
-            export PATH=~/.local/bin:$PATH
-            for i in 1 2 3 4 5 6 7; do
-              aws s3 sync newIDE/electron-app/dist s3://gdevelop-releases/$(git rev-parse --abbrev-ref HEAD)/commit/$(git rev-parse HEAD)/ && break
-              echo "Retry $i failed... retrying in 10 seconds"
-              sleep 10
-            done
-            if [ $i -eq 7 ]; then
-              echo "All retries for deployment failed!" >&2
-              exit 1
-            fi
-
+          command: export PATH=~/.local/bin:$PATH && aws s3 sync newIDE/electron-app/dist s3://gdevelop-releases/$(git rev-parse --abbrev-ref HEAD)/commit/$(git rev-parse HEAD)/
      - run:
          name: Deploy to S3 (latest)
-          command: |
-            export PATH=~/.local/bin:$PATH
-            for i in 1 2 3 4 5 6 7; do
-              aws s3 sync newIDE/electron-app/dist s3://gdevelop-releases/$(git rev-parse --abbrev-ref HEAD)/latest/ && break
-              echo "Retry $i failed... retrying in 10 seconds"
-              sleep 10
-            done
-            if [ $i -eq 7 ]; then
-              echo "All retries for deployment failed!" >&2
-              exit 1
-            fi
+          command: export PATH=~/.local/bin:$PATH && aws s3 sync newIDE/electron-app/dist s3://gdevelop-releases/$(git rev-parse --abbrev-ref HEAD)/latest/

-  # Build the app for Linux (using a pre-built GDevelop.js library).
+  # Build the **entire** app for Linux.
  build-linux:
    # CircleCI docker workers are failing if they don't have enough memory (no swap)
    resource_class: xlarge
@@ -131,33 +96,51 @@ jobs:
      - checkout
      - aws-cli/setup

-      # System dependencies (for Electron Builder)
+      # System dependencies (for Electron Builder and Emscripten)
      - run:
-          name: Update system dependencies
-          command: sudo apt-get update
+          name: Install dependencies for Emscripten
+          command: sudo apt-get update && sudo apt install cmake
+
+      - run:
+          name: Install Python3 dependencies for Emscripten
+          command: sudo apt install python-is-python3 python3-distutils -y
+
+      - run:
+          name: Install Emscripten (for GDevelop.js)
+          command: git clone https://github.com/juj/emsdk.git && cd emsdk && ./emsdk install 3.1.21 && ./emsdk activate 3.1.21 && cd ..

      - run:
          name: Install system dependencies for Electron builder
          command: sudo apt install icnsutils && sudo apt install graphicsmagick && sudo apt install rsync

+      # GDevelop.js dependencies
      - restore_cache:
          keys:
-            - gd-linux-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}-{{ checksum "GDJS/package-lock.json" }}
+            - gd-linux-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}
            # fallback to using the latest cache if no exact match is found
-            - gd-linux-nodejs-dependencies-
+            - gd-linux-nodejs-dependencies---

-      # GDevelop IDE dependencies (using an exact version of GDevelop.js, built previously)
+      - run:
+          name: Install GDevelop.js dependencies and build it
+          command: cd GDevelop.js && npm install && cd ..
+
+      # Build GDevelop.js (and run tests to ensure it works)
+      - run:
+          name: Build GDevelop.js
+          # Use "--runInBand" as it's faster and avoid deadlocks on CircleCI Linux machines (probably because limited in processes number).
+          command: cd GDevelop.js && source ../emsdk/emsdk_env.sh && npm run build && npm test -- --runInBand && cd ..
+
+      # GDevelop IDE dependencies (after building GDevelop.js to avoid downloading a pre-built version)
      - run:
          name: Install GDevelop IDE dependencies
-          command: export REQUIRES_EXACT_LIBGD_JS_VERSION=true && cd newIDE/app && npm install && cd ../electron-app && npm install
+          command: cd newIDE/app && npm install && cd ../electron-app && npm install

      - save_cache:
          paths:
            - newIDE/electron-app/node_modules
            - newIDE/app/node_modules
            - GDevelop.js/node_modules
-            - GDJS/node_modules
-          key: gd-linux-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}-{{ checksum "GDJS/package-lock.json" }}
+          key: gd-linux-nodejs-dependencies-{{ checksum "newIDE/app/package.json" }}-{{ checksum "newIDE/electron-app/package.json" }}-{{ checksum "GDevelop.js/package.json" }}

      # Build GDevelop IDE (seems like we need to allow Node.js to use more space than usual)
      - run:
@@ -182,7 +165,6 @@ jobs:

  # Build the WebAssembly library only (so that it's cached on a S3 and easy to re-use).
  build-gdevelop_js-wasm-only:
-    resource_class: medium+ # Compilation time decrease linearly with the number of CPUs, but not linking (so "large" does not speedup total build time).
    docker:
      - image: cimg/node:16.13

@@ -239,302 +221,17 @@ jobs:
          name: Deploy to S3 (latest)
          command: aws s3 sync Binaries/embuild/GDevelop.js s3://gdevelop-gdevelop.js/$(git rev-parse --abbrev-ref HEAD)/latest/

-  # Build the WebAssembly library with clang-tidy and memory sanitizers.
-  build-gdevelop_js-debug-sanitizers-and-extra-checks:
-    resource_class: xlarge # Total time decrease linearly with the number of CPUs.
-    docker:
-      - image: cimg/node:16.13
-
-    working_directory: ~/GDevelop
-
-    steps:
-      - checkout
-      - aws-cli/setup
-
-      # System dependencies (for Emscripten)
-      - run:
-          name: Install dependencies for Emscripten
-          command: sudo apt-get update && sudo apt install cmake
-
-      - run:
-          name: Install dependencies for clang-tidy v19
-          command: wget https://apt.llvm.org/llvm.sh && chmod +x llvm.sh && sudo ./llvm.sh 19 && sudo apt install clang-tidy-19
-
-      - run:
-          name: Install Python3 dependencies for Emscripten
-          command: sudo apt install python-is-python3 python3-distutils -y
-
-      - run:
-          name: Install Emscripten (for GDevelop.js)
-          command: git clone https://github.com/juj/emsdk.git && cd emsdk && ./emsdk install 3.1.21 && ./emsdk activate 3.1.21 && cd ..
-
-      # GDevelop.js dependencies
-      - restore_cache:
-          keys:
-            - gdevelop.js-linux-nodejs-dependencies-{{ checksum "GDevelop.js/package-lock.json" }}
-            # fallback to using the latest cache if no exact match is found
-            - gdevelop.js-linux-nodejs-dependencies-
-
-      - run:
-          name: Install GDevelop.js dependencies and build it
-          command: cd GDevelop.js && npm install && cd ..
-
-      # Build GDevelop.js
-      - run:
-          name: Build GDevelop.js ('debug-sanitizers' variant)
-          command: cd GDevelop.js && source ../emsdk/emsdk_env.sh && npm run build -- --variant=debug-sanitizers
-
-      - run:
-          name: Run clang-tidy
-          command: cd GDevelop.js && npm run lint
-
-      - run:
-          name: Run tests
-          command: cd GDevelop.js && npm run test -- --maxWorkers=4
-
-      # Upload artifacts (CircleCI)
-      - store_artifacts:
-          path: Binaries/embuild/GDevelop.js
-
-      # Upload artifacts (AWS)
-      - run:
-          name: Deploy to S3 (specific commit)
-          command: aws s3 sync Binaries/embuild/GDevelop.js s3://gdevelop-gdevelop.js/$(git rev-parse --abbrev-ref HEAD)/variant/debug-sanitizers/commit/$(git rev-parse HEAD)/
-
-  # Trigger AppVeyor build, which also does a Windows build (keep it for redundancy).
-  trigger-appveyor-windows-build:
-    docker:
-      - image: cimg/node:16.13
-    steps:
-      - run:
-          name: Trigger AppVeyor Windows build
-          command: |
-            curl -H "Content-Type: application/json" \
-                 -H "Authorization: Bearer ${APPVEYOR_API_KEY}" \
-                 --data "{
-                   \"accountName\": \"4ian\",
-                   \"projectSlug\": \"gdevelop\",
-                   \"branch\": \"${CIRCLE_BRANCH}\"
-                 }" \
-                 -X POST https://ci.appveyor.com/api/builds
-
-  build-windows:
-    executor:
-      name: win/default
-      size: medium
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - run:
-          # See https://www.ssl.com/how-to/how-to-integrate-esigner-cka-with-ci-cd-tools-for-automated-code-signing/
-          #
-          # This is necessary because of "signing to be FIPS-140 compliant". See
-          # https://github.com/electron-userland/electron-builder/issues/6158
-          #
-          # Make sure to DISABLE "malware blocker" in SSL.com to avoid errors like:
-          # Error information: "Error: SignerSign() failed." (-2146893821/0x80090003)
-          name: Download and Unzip eSignerCKA Setup
-          command: |
-
-            Invoke-WebRequest -OutFile eSigner_CKA_1.0.3.zip "https://www.ssl.com/download/ssl-com-esigner-cka-1-0-3"
-
-            Expand-Archive -Force eSigner_CKA_1.0.3.zip
-
-            Remove-Item eSigner_CKA_1.0.3.zip
-
-            Move-Item -Destination "eSigner_CKA_1.0.3.exe" -Path "eSigner_CKA_*\*.exe"
-      - run:
-          name: Setup eSignerCKA in Silent Mode
-          command: |
-
-            mkdir -p "/home/circleci/project/eSignerCKA"
-
-            ./eSigner_CKA_1.0.3.exe /CURRENTUSER /VERYSILENT /SUPPRESSMSGBOXES /DIR="/home/circleci/project/eSignerCKA" | Out-Null
-      - run:
-          name: Config Account Information on eSignerCKA
-          command: |
-
-            /home/circleci/project/eSignerCKA/eSignerCKATool.exe config -mode product -user "$env:ESIGNER_USER_NAME" -pass "$env:ESIGNER_USER_PASSWORD" -totp "$env:ESIGNER_USER_TOTP" -key "/home/circleci/project/eSignerCKA/master.key" -r
-      - run:
-          name: Load Certificate into Windows Store
-          command: |
-
-            /home/circleci/project/eSignerCKA/eSignerCKATool.exe unload
-
-            /home/circleci/project/eSignerCKA/eSignerCKATool.exe load
-      - run:
-          name: Select Certificate From Windows Store and Sign Sample File with SignTool
-          command: |
-
-            $CodeSigningCert = Get-ChildItem Cert:\CurrentUser\My -CodeSigningCert | Select-Object -First 1
-
-            echo Certificate: $CodeSigningCert
-
-      - restore_cache:
-          name: Restore node_modules cache
-          keys:
-            - v1-win-node-{{ checksum "newIDE/app/package-lock.json" }}-{{ checksum "newIDE/electron-app/package-lock.json" }}-{{ checksum "GDJS/package-lock.json" }}
-            - v1-win-node-
-
-      - run:
-          name: Install dependencies
-          no_output_timeout: 25m
-          # Remove package-lock.json because they seems to cause the npm install to be stuck. We should try again after re-generating them.
-          # Also install setuptools as something requires distutils in electron-app, and it was removed in Python 3.12.
-          # setuptools will make distutils available again (but we should migrate our packages probably).
-          command: |
-            pip install setuptools
-
-            cd newIDE\app
-
-            npm -v
-
-            Remove-Item package-lock.json
-
-            $Env:REQUIRES_EXACT_LIBGD_JS_VERSION = "true"
-
-            npm install
-
-            cd ..\electron-app
-
-            Remove-Item package-lock.json
-
-            npm install
-
-            cd ..\..
-
-      - save_cache:
-          name: Save node_modules cache
-          key: v1-win-node-{{ checksum "newIDE/app/package-lock.json" }}-{{ checksum "newIDE/electron-app/package-lock.json" }}-{{ checksum "GDJS/package-lock.json" }}
-          paths:
-            - newIDE/app/node_modules
-            - newIDE/electron-app/node_modules
-            - GDJS/node_modules
-
-      - run:
-          name: Build NSIS executable (with code signing)
-          command: |
-            cd newIDE\electron-app
-
-            $CodeSigningCert = Get-ChildItem Cert:\CurrentUser\My -CodeSigningCert | Select-Object -First 1
-
-            echo Certificate: $CodeSigningCert
-
-            # Use a custom signtool path because of the signtool.exe bundled withy electron-builder not working for some reason.
-            # Can also be found in versioned folders like "C:/Program Files (x86)/Windows Kits/10/bin/10.0.22000.0/x86/signtool.exe".
-            # or "C:\Program Files (x86)\Windows Kits\10\bin\10.0.22621.0\x86\signtool.exe".
-
-            $Env:SIGNTOOL_PATH = "C:\Program Files (x86)\Windows Kits\10\App Certification Kit\signtool.exe"
-
-            # Extract thumbprint and subject name of the certificate (will be passed to electron-builder).
-
-            $Env:GD_SIGNTOOL_THUMBPRINT = $CodeSigningCert.Thumbprint
-
-            $Env:GD_SIGNTOOL_SUBJECT_NAME = ($CodeSigningCert.Subject -replace ", ?", "`n" | ConvertFrom-StringData).CN
-
-            # Build the nsis installer (signed: electron-builder will use SignTool.exe with the certificate)
-
-            node scripts/build.js --win nsis --publish=never
-
-            cd ..\..
-      - run:
-          name: Build AppX (without code signing)
-          # Don't sign the appx (it will be signed by the Microsoft Store).
-          command: |
-            cd newIDE\electron-app
-
-            # Build the appx (not signed). Ensure all variables used for code signing are empty.
-
-            $Env:GD_SIGNTOOL_THUMBPRINT = ''
-
-            $Env:GD_SIGNTOOL_SUBJECT_NAME = ''
-
-            $Env:CSC_LINK = ''
-
-            $Env:CSC_KEY_PASSWORD = ''
-
-            node scripts/build.js --skip-app-build --win appx --publish=never
-
-            cd ..\..
-
-      - run:
-          name: Clean binaries
-          shell: cmd.exe
-          command: |
-            rmdir /s /q newIDE\electron-app\dist\win-unpacked
-
-      - run:
-          name: Install AWS CLI
-          command: |
-            # Install the CLI for the current user
-
-            pip install --quiet --upgrade --user awscli
-
-            # Add the user-Scripts dir to PATH for this step and the next.
-
-            $binDir = (python -m site --user-base) + "\Scripts"
-            $Env:Path += ";$binDir"
-
-            # Sanity check:
-            aws --version
-
-      # Upload artifacts (S3)
-      - run:
-          name: Deploy to S3 (specific commit)
-          command: |
-            aws s3 sync newIDE\electron-app\dist "s3://gdevelop-releases/$Env:CIRCLE_BRANCH/commit/$Env:CIRCLE_SHA1/"
-
-      - run:
-          name: Deploy to S3 (latest)
-          command: |
-            aws s3 sync newIDE\electron-app\dist "s3://gdevelop-releases/$Env:CIRCLE_BRANCH/latest/"
-
-      # Upload artifacts (CircleCI)
-      - store_artifacts:
-          path: newIDE/electron-app/dist
-
 workflows:
-  gdevelop_js-wasm-extra-checks:
-    jobs:
-      - build-gdevelop_js-debug-sanitizers-and-extra-checks:
-          # Extra checks are resource intensive so don't always run them.
-          filters:
-            branches:
-              only:
-                - master
-                - /experimental-build.*/
  builds:
    jobs:
      - build-gdevelop_js-wasm-only
      - build-macos:
-          # The macOS version builds by itself GDevelop.js
-          # (so we verify we can build it on macOS).
-          # requires:
-          #   - build-gdevelop_js-wasm-only
          filters:
            branches:
              only:
                - master
                - /experimental-build.*/
      - build-linux:
-          requires:
-            - build-gdevelop_js-wasm-only
-          filters:
-            branches:
-              only:
-                - master
-                - /experimental-build.*/
-      - build-windows:
-          requires:
-            - build-gdevelop_js-wasm-only
-          filters:
-            branches:
-              only:
-                - master
-                - /experimental-build.*/
-      - trigger-appveyor-windows-build:
-          requires:
-            - build-gdevelop_js-wasm-only
          filters:
            branches:
              only:
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,4 +0,0 @@
-Checks: 'clang-diagnostic-*,clang-analyzer-*,cppcoreguidelines-*,-cppcoreguidelines-explicit-virtual-functions,-cppcoreguidelines-avoid-const-or-ref-data-members,-cppcoreguidelines-special-member-functions,-cppcoreguidelines-avoid-magic-numbers,-cppcoreguidelines-non-private-member-variables-in-classes,-cppcoreguidelines-owning-memory,-cppcoreguidelines-virtual-class-destructor,-clang-analyzer-optin.performance.Padding,-cppcoreguidelines-narrowing-conversions'
-WarningsAsErrors: 'cppcoreguidelines-pro-type-member-init, clang-analyzer-optin.cplusplus.UninitializedObject'
-HeaderFilterRegex: '.*'
-FormatStyle: none
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,12 +1,12 @@
 Core/GDCore/Serialization/rapidjson/rapidjson.h/* linguist-vendored
+Core/GDCore/TinyXml/* linguist-vendored
 Extensions/ParticleSystem/SPARK/* linguist-vendored
 Extensions/PhysicsBehavior/Box2D/* linguist-vendored
 Extensions/PhysicsBehavior/box2djs/* linguist-vendored
 Extensions/Physics2Behavior/box2d.js linguist-vendored
-Extensions/Physics3DBehavior/*.wasm-compat.js linguist-vendored
 Extensions/BBText/pixi-multistyle-text/* linguist-vendored
 Extensions/P2P/A_peer.js linguist-vendored
-Extensions/Multiplayer/peer.js linguist-vendored
 Extensions/Shopify/shopify-buy.umd.polyfilled.min.js linguist-vendored
 Extensions/TileMap/pako/* linguist-vendored
 Extensions/TileMap/pixi-tilemap/* linguist-vendored
+Extensions/TweenBehavior/shifty.js linguist-vendored
--- a/.github/workflows/gdcore-tools-hook.yml
+++ b/.github/workflows/gdcore-tools-hook.yml
@@ -1,22 +0,0 @@
-# This worflow notifies arthuro555's gdcore-tools repository when a new release is published.
-#
-# This is used to allow gdcore-tools, a library to use GDCore outside of GDevelop,
-# to attempt to automatically build, test, and publish a release for the new
-# GDevelop version.
-name: Trigger gdcore-tools pipeline
-
-on:
-  release:
-    types: [published]
-
-jobs:
-  dispatch-event:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Repository Dispatch
-        uses: peter-evans/repository-dispatch@v3
-        with:
-          token: ${{ secrets.GDCORE_TOOLS_PAT }}
-          repository: arthuro555/gdcore-tools
-          event-type: gdevelop-release
-          client-payload: '{"release": ${{ toJson(github.event.release) }}}'
--- a/.github/workflows/update-extension-translations.yml
+++ b/.github/workflows/update-extension-translations.yml
@@ -1,47 +0,0 @@
-# GitHub Action to update extension translations.
-# It copies the latest messages.js files from the GDevelop-extensions repository
-# and opens a Pull Request with the changes on GDevelop's repository.
-
-name: Update extension translations
-on:
-  push:
-    branches:
-      - master
-    tags-ignore:
-      - "**" # Don't run on new tags
-  workflow_dispatch: # Allows manual triggering from the Actions tab
-
-jobs:
-  update-extension-translations:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout current repository
-        uses: actions/checkout@v3
-
-      - name: Clone GDevelop-extensions repository
-        run: git clone https://github.com/GDevelopApp/GDevelop-extensions.git /tmp/GDevelop-extensions
-
-      - name: Copy and rename translation files
-        run: |
-          mkdir -p newIDE/app/src/locales
-          for folder in /tmp/GDevelop-extensions/.translations/*; do
-            if [ -d "$folder" ]; then
-              lang=$(basename "$folder")
-              mkdir -p "newIDE/app/src/locales/$lang"
-              cp "$folder/messages.js" "newIDE/app/src/locales/$lang/extension-messages.js"
-            fi
-          done
-          cp /tmp/GDevelop-extensions/.translations/LocalesMetadata.js newIDE/app/src/locales/ExtensionLocalesMetadata.js
-
-      - name: Create Pull Request with updated translations
-        uses: peter-evans/create-pull-request@v6
-        with:
-          commit-message: Update extension translations [skip ci]
-          branch: chore/update-extension-translations
-          delete-branch: true
-          title: "[Auto PR] Update extension translations"
-          body: |
-            This updates the extension translations by copying the latest messages.js files from the GDevelop-extensions repository.
-            Each messages.js file is renamed to extension-messages.js and placed in the corresponding language folder under `newIDE/app/src/locales`.
-
-            Please review the changes carefully before merging.
--- a/.github/workflows/update-translations.yml
+++ b/.github/workflows/update-translations.yml
@@ -19,7 +19,7 @@ jobs:
      - uses: actions/checkout@v3
      - uses: actions/setup-node@v3
        with:
-          node-version: 20
+          node-version: 16
          cache: "npm"
          cache-dependency-path: "newIDE/app/package-lock.json"

@@ -58,7 +58,7 @@ jobs:
        working-directory: newIDE/app

      - name: Create a Pull Request with the changes
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v5
        with:
          commit-message: Update translations [skip ci]
          branch: chore/update-translations
--- a/.semaphore/semaphore.yml
+++ b/.semaphore/semaphore.yml
@@ -56,7 +56,6 @@ blocks:
        - name: GDJS typing and documentation generation
          commands:
            - checkout
-            - cache restore newIDE-app-node_modules-$SEMAPHORE_GIT_BRANCH-revision-$(checksum newIDE/app/package-lock.json)
            - cache restore GDJS-node_modules-$SEMAPHORE_GIT_BRANCH-revision-$(checksum GDJS/package-lock.json)
            - cache restore GDJS-tests-node_modules-$SEMAPHORE_GIT_BRANCH-revision-$(checksum GDJS/tests/package-lock.json)
            - cd GDJS
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,11 +17,11 @@ cache:
 addons:
  apt:
    sources:
-      - ubuntu-toolchain-r-test
+    - ubuntu-toolchain-r-test
    packages:
-      # Build dependencies:
-      - cmake
-      - p7zip-full
+    # Build dependencies:
+    - cmake
+    - p7zip-full

 before_install:
  # This workaround is required to avoid libstdc++ errors (Emscripten requires a recent version of libstdc++)
@@ -29,48 +29,47 @@ before_install:
  - sudo dpkg --force-all -i libstdc++6

 install:
-  # Ensure we use a recent version of Node.js (and npm).
+# Ensure we use a recent version of Node.js (and npm).
  - nvm install v16 && nvm use v16
-  #Compile the tests only for GDCore
+#Compile the tests only for GDCore
  - mkdir .build-tests
  - cd .build-tests
  - cmake -DBUILD_GDJS=FALSE -DBUILD_TESTS=TRUE -DCMAKE_CXX_COMPILER=$(which $CXX) -DCMAKE_C_COMPILER=$(which $CC) ..
  - make -j 4
  - cd ..
-  # Install Emscripten (for GDevelop.js)
-  # Specify the tag for the core repository to avois breaking changes.
-  - git clone --depth 1 --branch 3.1.21 https://github.com/juj/emsdk.git
+# Install Emscripten (for GDevelop.js)
+  - git clone https://github.com/juj/emsdk.git
  - cd emsdk && ./emsdk install 3.1.21 && ./emsdk activate 3.1.21 && cd ..
-  # Install GDevelop.js dependencies
+# Install GDevelop.js dependencies
  - cd GDevelop.js && npm install && cd ..
-  # Build GDevelop.js
-  # (in a subshell to avoid Emscripten polluting the Node.js and npm version for the rest of the build)
+# Build GDevelop.js
+# (in a subshell to avoid Emscripten polluting the Node.js and npm version for the rest of the build)
  - (set -e; cd GDevelop.js && source ../emsdk/emsdk_env.sh && npm run build && cd ..)
-  # Install newIDE tests dependencies
+# Install newIDE tests dependencies
  - npm -v
  - cd newIDE/app && npm install
  - cd ../..
-  # Install GDJS tests dependencies
+# Install GDJS tests dependencies
  - cd GDJS && npm install && cd tests && npm install
  - cd ../..

 script:
-  # GDCore tests:
+# GDCore tests:
  - cd .build-tests
  - Core/GDCore_tests
  - cd ..
-  # GDevelop.js tests
+# GDevelop.js tests
  - cd GDevelop.js
  - npm test
  - cd ..
-  # newIDE tests:
+# newIDE tests:
  - cd newIDE/app
  - npm test
  - npm run flow
  - npm run check-format
  - npm run check-script-types
  - cd ../..
-  # GDJS tests:
+# GDJS tests:
  - cd GDJS
  - npm run check-format
  - cd ..
--- a/.vscode/GDevelopExtensions.code-snippets
+++ b/.vscode/GDevelopExtensions.code-snippets
@@ -107,7 +107,7 @@
    "description": "Define a parameter in a GDevelop extension definition.",
    "prefix": "gdparam",
    "body": [
-      ".addParameter('${1|string,expression,object,behavior,yesorno,stringWithSelector,scenevar,globalvar,objectvar,objectList,objectListWithoutPicking,color,key,sceneName,file,layer,relationalOperator,operator,trueorfalse,musicfile,soundfile,mouse,passwordjoyaxis,camera,objectPtr,forceMultiplier|}', '${2:Parameter description}', '${3:Optional parameter data}', /*parameterIsOptional=*/${4|false,true|})"
+      ".addParameter('${1|string,expression,object,behavior,yesorno,stringWithSelector,scenevar,globalvar,objectvar,objectList,objectListWithoutPicking,color,key,sceneName,file,layer,relationalOperator,operator,trueorfalse,musicfile,soundfile,police,mouse,passwordjoyaxis,camera,objectPtr,forceMultiplier|}', '${2:Parameter description}', '${3:Optional parameter data}', /*parameterIsOptional=*/${4|false,true|})"
    ]
  },
  "Add code only parameter": {
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -114,8 +114,7 @@
    "__bits": "cpp",
    "__verbose_abort": "cpp",
    "variant": "cpp",
-    "charconv": "cpp",
-    "execution": "cpp"
+    "charconv": "cpp"
  },
  "files.exclude": {
    "Binaries/*build*": true,
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -8,7 +8,6 @@
      "group": "build",
      "label": "Start development server",
      "detail": "Starts the GDevelop development server.",
-      "options": { "env": { "NODE_OPTIONS": "--max-old-space-size=8192" } },
      "problemMatcher": [
        {
          "owner": "cra",
--- a/AI_PROJECT_RESTORE_IMPLEMENTATION.md
+++ b/AI_PROJECT_RESTORE_IMPLEMENTATION.md
@@ -1,130 +0,0 @@
-# AI Project Restore Implementation
-
-## Overview
-This implementation provides automatic project saving and restoration capabilities for AI agent requests, leveraging GDevelop's existing cloud save features and version history system.
-
-## Key Features
-
-### 1. Automatic Project Save Before AI Agent Requests
- When a user starts a new AI agent request, the project is automatically saved to create a cloud version
- This only works for cloud projects (projects saved to GDevelop Cloud)
- The current version ID is captured and stored with the AI request
-
-### 2. Version-Based Restoration
- Uses GDevelop's existing cloud version system instead of custom serialization
- Leverages the `onOpenCloudProjectOnSpecificVersion` function from MainFrame
- Provides seamless restoration to the exact state before AI agent modifications
-
-### 3. Smart UI Integration
- Restore button appears at the top of AI agent chats that have a stored initial version
- Only visible for cloud projects with stored version information
- Button shows loading state during restoration process
-
-## Implementation Details
-
-### Backend API Changes
- Extended `AiRequest` type to include `initialProjectVersionId?: string | null`
- This field stores the cloud project version ID captured before starting the agent
-
-### Frontend Changes
-
-#### 1. AskAiEditorContainer.js
- Added `onOpenCloudProjectOnSpecificVersion` prop to enable version restoration
- Modified AI request creation to save project and capture version ID for cloud projects
- Added `onRestoreInitialProject` callback that uses cloud version system
- Only attempts version capture for cloud projects (`storageProvider.internalName === 'Cloud'`)
-
-#### 2. AiRequestChat/index.js
- Added restore button UI at the top of agent chats
- Added `isCloudProject` prop to control button visibility
- Added loading state for restore operation
- Proper error handling during restoration
-
-#### 3. EditorFunctions/index.js
- Extended `EditorCallbacks` type to include optional `onSave` function
- Enables AI components to trigger project saves when needed
-
-#### 4. MainFrame/index.js
- Added `onOpenCloudProjectOnSpecificVersion` to editor props
- This connects the AI editor to the existing version restoration system
-
-## User Experience
-
-### Starting an Agent Request
-1. User opens AI agent and submits a request
-2. System automatically saves the current project (creates a new version)
-3. Version ID is stored with the AI request for later restoration
-4. AI agent proceeds with modifications
-
-### Restoring to Initial State
-1. User sees "Click here to restore the project as it was at the beginning" button
-2. Clicking the button triggers cloud version restoration
-3. Project is restored to the exact state before AI agent started
-4. All changes made by the AI agent are discarded
-
-## Technical Advantages
-
-### 1. Leverages Existing Infrastructure
- Uses GDevelop's mature cloud save and version system
- No custom serialization/deserialization code needed
- Inherits all cloud storage reliability and error handling
-
-### 2. Scalable and Reliable
- Cloud versions are professionally managed and backed up
- No local storage limitations or browser storage issues
- Consistent across different devices and sessions
-
-### 3. Version History Integration
- Restored versions appear in the project's version history
- Users can access version history features for AI-generated content
- Seamless integration with existing version management workflow
-
-## Limitations and Considerations
-
-### 1. Cloud Projects Only
- Feature only works for projects saved to GDevelop Cloud
- Local projects cannot use this restoration feature
- Clear messaging is provided when feature is unavailable
-
-### 2. Version Storage
- Relies on cloud project version creation during save
- Version IDs are stored locally in the AI request metadata
- If local storage is cleared, version reference may be lost
-
-### 3. Network Dependency
- Restoration requires internet connection for cloud access
- Standard cloud storage network limitations apply
-
-## Error Handling
-
-### 1. Save Failures
- If initial save fails, AI request continues without version storage
- User is informed that restoration won't be available
- Graceful degradation ensures AI functionality remains available
-
-### 2. Restoration Failures
- Comprehensive error logging for debugging
- UI provides feedback during restoration process
- Button disabled during restoration to prevent conflicts
-
-### 3. Non-Cloud Projects
- Restore functionality hidden for non-cloud projects
- Clear console warnings when attempting unsupported operations
- No impact on existing AI functionality for local projects
-
-## Future Enhancements
-
-### 1. Backend Integration
- Could extend backend API to store `initialProjectVersionId` server-side
- Would enable restoration across sessions and devices
- Currently relies on local client-side storage
-
-### 2. Local Project Support
- Could implement local project snapshots using browser storage
- Would require custom serialization for non-cloud projects
- Currently prioritizes cloud projects for reliability
-
-### 3. Enhanced UI
- Could add confirmation dialogs for restoration
- Might include preview of changes before restoration
- Could integrate with version history UI components
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,7 +60,7 @@ if("${CMAKE_BUILD_TYPE}" STREQUAL "Release" AND NOT WIN32 AND CMAKE_COMPILER_IS_
 endif()

 #Activate C++11
-set(CMAKE_CXX_STANDARD 11) # Upgrading to C++17 should be tried.
+set(CMAKE_CXX_STANDARD 11) # Upgrading to C++17 would need to remove usage of bind2nd (should be easy).
 set(CMAKE_CXX_STANDARD_REQUIRED ON)

 # Mark some warnings as errors
@@ -69,18 +69,12 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 	# uninitialized variables or other hard to debug bugs.
 	add_compile_options(
 		-Wall
-		-Wextra
-		-Wuninitialized
-		-Wconditional-uninitialized
 		-Wno-unknown-warning-option
 		-Wno-reorder-ctor
 		-Wno-reorder
-		-Wno-unused-parameter
 		-Wno-pessimizing-move
-		-Wno-unused-variable # Not a good style, but not a risk
+		-Wno-unused-variable
 		-Wno-unused-private-field
-		-Wno-ignored-qualifiers # Not a risk
-		-Wno-sign-compare # Not a big risk

 		# Make as much warnings considered as errors as possible (only one for now).
 		-Werror=return-stack-address
--- a/Core/CMakeLists.txt
+++ b/Core/CMakeLists.txt
@@ -11,11 +11,6 @@ set(CMAKE_CXX_USE_RESPONSE_FILE_FOR_INCLUDES 1)
 set(GDCORE_include_dir ${GD_base_dir}/Core PARENT_SCOPE)
 set(GDCORE_lib_dir ${GD_base_dir}/Binaries/Output/${CMAKE_BUILD_TYPE}_${CMAKE_SYSTEM_NAME} PARENT_SCOPE)

-# Create VersionPriv.h - only useful for testing.
-if (NOT EMSCRIPTEN)
-	file(WRITE "${GD_base_dir}/Core/GDCore/Tools/VersionPriv.h" "#define GD_VERSION_STRING \"0.0.0-0\"")
-endif()
-
 # Dependencies on external libraries:
 #

--- a/Core/GDCore/DocMainPage.h
+++ b/Core/GDCore/DocMainPage.h
@@ -58,7 +58,99 @@
 * Common functions and tools for programming.
 */

+/**
+ * \defgroup TinyXml Integrated TinyXml library
+ *
+ * See the full documentation of TinyXml [here](http://www.grinninglizard.com/tinyxmldocs/index.html).
+ */
+
 /**
 * \defgroup SpriteObjectExtension Standard Sprite Object extension
 * \ingroup BuiltinExtensions
- */
+ */
+
+/**
+ * \class TiXmlAttribute
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlAttributeSet
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlBase
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlComment
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlCursor
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlDeclaration
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlDocument
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlElement
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlHandle
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlNode
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlOutStream
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlParsingData
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlPrinter
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlString
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlText
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlUnknown
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
+/**
+ * \class TiXmlVisitor
+ * \brief Part of the tinyxml library
+ * \ingroup TinyXml
+ */
--- a/Core/GDCore/Events/Builtin/ForEachChildVariableEvent.cpp
+++ b/Core/GDCore/Events/Builtin/ForEachChildVariableEvent.cpp
@@ -49,8 +49,7 @@ vector<pair<gd::Expression*, gd::ParameterMetadata> >
    ForEachChildVariableEvent::GetAllExpressionsWithMetadata() {
  vector<pair<gd::Expression*, gd::ParameterMetadata> >
      allExpressionsWithMetadata;
-  auto metadata = gd::ParameterMetadata().SetType("variable");
-  metadata.SetExtraInfo("AllowUndeclaredVariable");
+  auto metadata = gd::ParameterMetadata().SetType("scenevar");
  allExpressionsWithMetadata.push_back(
      std::make_pair(&iterableVariableName, metadata));
  allExpressionsWithMetadata.push_back(
@@ -64,8 +63,7 @@ vector<pair<const gd::Expression*, const gd::ParameterMetadata> >
    ForEachChildVariableEvent::GetAllExpressionsWithMetadata() const {
  vector<pair<const gd::Expression*, const gd::ParameterMetadata> >
      allExpressionsWithMetadata;
-  auto metadata = gd::ParameterMetadata().SetType("variable");
-  metadata.SetExtraInfo("AllowUndeclaredVariable");
+  auto metadata = gd::ParameterMetadata().SetType("scenevar");
  allExpressionsWithMetadata.push_back(
      std::make_pair(&iterableVariableName, metadata));
  allExpressionsWithMetadata.push_back(
--- a/Core/GDCore/Events/Builtin/ForEachEvent.cpp
+++ b/Core/GDCore/Events/Builtin/ForEachEvent.cpp
@@ -8,6 +8,7 @@
 #include "GDCore/Events/Serialization.h"
 #include "GDCore/Events/Tools/EventsCodeNameMangler.h"
 #include "GDCore/Serialization/SerializerElement.h"
+#include "GDCore/TinyXml/tinyxml.h"

 using namespace std;

--- a/Core/GDCore/Events/Builtin/GroupEvent.cpp
+++ b/Core/GDCore/Events/Builtin/GroupEvent.cpp
@@ -10,6 +10,7 @@
 #include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
 #include "GDCore/Events/Serialization.h"
 #include "GDCore/Serialization/SerializerElement.h"
+#include "GDCore/TinyXml/tinyxml.h"

 using namespace std;

@@ -61,12 +62,10 @@ void GroupEvent::UnserializeFrom(gd::Project& project,
      project, events, element.GetChild("events"));

  parameters.clear();
-  if (element.HasChild("parameters")) {
-    gd::SerializerElement& parametersElement = element.GetChild("parameters");
-    parametersElement.ConsiderAsArrayOf("parameters");
-    for (std::size_t i = 0; i < parametersElement.GetChildrenCount(); ++i)
-      parameters.push_back(parametersElement.GetChild(i).GetValue().GetString());
-  }
+  gd::SerializerElement& parametersElement = element.GetChild("parameters");
+  parametersElement.ConsiderAsArrayOf("parameters");
+  for (std::size_t i = 0; i < parametersElement.GetChildrenCount(); ++i)
+    parameters.push_back(parametersElement.GetChild(i).GetValue().GetString());
 }

 void GroupEvent::SetBackgroundColor(unsigned int colorR_,
--- a/Core/GDCore/Events/Builtin/LinkEvent.cpp
+++ b/Core/GDCore/Events/Builtin/LinkEvent.cpp
@@ -163,21 +163,6 @@ void LinkEvent::UnserializeFrom(gd::Project& project,
  // end of compatibility code
 }

-vector<gd::String> LinkEvent::GetAllSearchableStrings() const {
-  vector<gd::String> allSearchableStrings;
-
-  allSearchableStrings.push_back(target);
-
-  return allSearchableStrings;
-}
-
-bool LinkEvent::ReplaceAllSearchableStrings(
-    std::vector<gd::String> newSearchableString) {
-  if (newSearchableString[0] == target) return false;
-  SetTarget(newSearchableString[0]);
-  return true;
-}
-
 bool LinkEvent::AcceptVisitor(gd::EventVisitor &eventVisitor) {
  return BaseEvent::AcceptVisitor(eventVisitor) ||
         eventVisitor.VisitLinkEvent(*this);
--- a/Core/GDCore/Events/Builtin/LinkEvent.h
+++ b/Core/GDCore/Events/Builtin/LinkEvent.h
@@ -109,10 +109,6 @@ class GD_CORE_API LinkEvent : public gd::BaseEvent {

  virtual bool IsExecutable() const override { return true; };

-  virtual std::vector<gd::String> GetAllSearchableStrings() const override;
-  virtual bool ReplaceAllSearchableStrings(
-      std::vector<gd::String> newSearchableString) override;
-
  virtual void SerializeTo(SerializerElement& element) const override;
  virtual void UnserializeFrom(gd::Project& project,
                               const SerializerElement& element) override;
--- a/Core/GDCore/Events/Builtin/RepeatEvent.h
+++ b/Core/GDCore/Events/Builtin/RepeatEvent.h
@@ -4,8 +4,8 @@
 * reserved. This project is released under the MIT License.
 */

-#pragma once
-
+#ifndef GDCORE_REPEATEVENT_H
+#define GDCORE_REPEATEVENT_H
 #include "GDCore/Events/Event.h"
 #include "GDCore/Events/EventsList.h"
 namespace gd {
@@ -36,10 +36,10 @@ class GD_CORE_API RepeatEvent : public gd::BaseEvent {
  const gd::InstructionsList& GetActions() const { return actions; };
  gd::InstructionsList& GetActions() { return actions; };

-  const gd::Expression& GetRepeatExpression() const {
-    return repeatNumberExpression;
+  const gd::String& GetRepeatExpression() const {
+    return repeatNumberExpression.GetPlainString();
  };
-  void SetRepeatExpressionPlainString(gd::String repeatNumberExpression_) {
+  void SetRepeatExpression(gd::String repeatNumberExpression_) {
    repeatNumberExpression = gd::Expression(repeatNumberExpression_);
  };

@@ -68,3 +68,5 @@ class GD_CORE_API RepeatEvent : public gd::BaseEvent {
 };

 }  // namespace gd
+
+#endif  // GDCORE_REPEATEVENT_H
--- a/Core/GDCore/Events/Builtin/StandardEvent.cpp
+++ b/Core/GDCore/Events/Builtin/StandardEvent.cpp
@@ -15,8 +15,7 @@ using namespace std;

 namespace gd {

-StandardEvent::StandardEvent()
-    : BaseEvent(), variables(gd::VariablesContainer::SourceType::Local) {}
+StandardEvent::StandardEvent() : BaseEvent() {}

 StandardEvent::~StandardEvent(){};

@@ -58,9 +57,6 @@ void StandardEvent::SerializeTo(SerializerElement& element) const {
  if (!events.IsEmpty())
    gd::EventsListSerialization::SerializeEventsTo(events,
                                                  element.AddChild("events"));
-  if (HasVariables()) {
-    variables.SerializeTo(element.AddChild("variables"));
-  }
 }

 void StandardEvent::UnserializeFrom(gd::Project& project,
@@ -75,11 +71,6 @@ void StandardEvent::UnserializeFrom(gd::Project& project,
    gd::EventsListSerialization::UnserializeEventsFrom(
        project, events, element.GetChild("events", 0, "Events"));
  }
-
-  variables.Clear();
-  if (element.HasChild("variables")) {
-    variables.UnserializeFrom(element.GetChild("variables"));
-  }
 }

 }  // namespace gd
--- a/Core/GDCore/Events/Builtin/StandardEvent.h
+++ b/Core/GDCore/Events/Builtin/StandardEvent.h
@@ -4,13 +4,13 @@
 * reserved. This project is released under the MIT License.
 */

-#pragma once
-
+#if defined(GD_IDE_ONLY)
+#ifndef GDCORE_STANDARDEVENT_H
+#define GDCORE_STANDARDEVENT_H
 #include "GDCore/Events/Event.h"
 #include "GDCore/Events/EventsList.h"
 #include "GDCore/Events/Instruction.h"
 #include "GDCore/Events/InstructionsList.h"
-#include "GDCore/Project/VariablesContainer.h"
 namespace gd {
 class Instruction;
 class Project;
@@ -33,10 +33,6 @@ class GD_CORE_API StandardEvent : public gd::BaseEvent {
  virtual const gd::EventsList& GetSubEvents() const { return events; };
  virtual gd::EventsList& GetSubEvents() { return events; };

-  virtual bool CanHaveVariables() const { return true; }
-  virtual const gd::VariablesContainer& GetVariables() const { return variables; };
-  virtual gd::VariablesContainer& GetVariables() { return variables; };
-
  const gd::InstructionsList& GetConditions() const { return conditions; };
  gd::InstructionsList& GetConditions() { return conditions; };

@@ -57,7 +53,9 @@ class GD_CORE_API StandardEvent : public gd::BaseEvent {
  gd::InstructionsList conditions;
  gd::InstructionsList actions;
  EventsList events;
-  VariablesContainer variables;
 };

 }  // namespace gd
+
+#endif  // GDCORE_STANDARDEVENT_H
+#endif
--- a/Core/GDCore/Events/Builtin/WhileEvent.h
+++ b/Core/GDCore/Events/Builtin/WhileEvent.h
@@ -72,6 +72,8 @@ class GD_CORE_API WhileEvent : public gd::BaseEvent {
                              ///< de/activate infinite loop warning when the
                              ///< user create the event

+  mutable unsigned int whileConditionsHeight;
+
  int GetConditionsHeight() const;
  int GetActionsHeight() const;
  int GetWhileConditionsHeight() const;
--- a/Core/GDCore/Events/CodeGeneration/DiagnosticReport.h
+++ b/Core/GDCore/Events/CodeGeneration/DiagnosticReport.h
@@ -1,129 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-present Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#pragma once
-
-#include <memory>
-#include <vector>
-
-#include "GDCore/String.h"
-#include "GDCore/Tools/MakeUnique.h"
-
-namespace gd {
-
-/**
- * \brief
- */
-class GD_CORE_API ProjectDiagnostic {
- public:
-  enum ErrorType {
-    UndeclaredVariable,
-    MissingBehavior,
-    UnknownObject,
-    MismatchedObjectType,
-  };
-
-  ProjectDiagnostic(ErrorType type_,
-                    const gd::String &message_,
-                    const gd::String &actualValue_,
-                    const gd::String &expectedValue_,
-                    const gd::String &objectName_ = "")
-      : type(type_),
-        message(message_),
-        actualValue(actualValue_),
-        expectedValue(expectedValue_),
-        objectName(objectName_) {};
-  virtual ~ProjectDiagnostic() {};
-
-  ErrorType GetType() const { return type; };
-  const gd::String &GetMessage() const { return message; }
-  const gd::String &GetObjectName() const { return objectName; }
-  const gd::String &GetActualValue() const { return actualValue; }
-  const gd::String &GetExpectedValue() const { return expectedValue; }
-
- private:
-  ErrorType type;
-  gd::String message;
-  gd::String objectName;
-  gd::String actualValue;
-  gd::String expectedValue;
-};
-
-/**
- * \brief
- */
-class GD_CORE_API DiagnosticReport {
- public:
-  DiagnosticReport() {};
-  virtual ~DiagnosticReport() {};
-
-  void Add(const gd::ProjectDiagnostic &projectDiagnostic) {
-    projectDiagnostics.push_back(
-        gd::make_unique<gd::ProjectDiagnostic>(projectDiagnostic));
-  };
-
-  const ProjectDiagnostic &Get(std::size_t index) const {
-    return *projectDiagnostics[index].get();
-  };
-
-  std::size_t Count() const { return projectDiagnostics.size(); };
-
-  const gd::String &GetSceneName() const { return sceneName; }
-
-  void SetSceneName(const gd::String &sceneName_) { sceneName = sceneName_; }
-
-  void LogAllDiagnostics() {
-    for (auto &diagnostic : projectDiagnostics) {
-      std::cout << diagnostic->GetMessage()
-                << "(object: " << diagnostic->GetObjectName()
-                << ", actual value: " << diagnostic->GetActualValue()
-                << ", expected value: " << diagnostic->GetExpectedValue() << ")"
-                << std::endl;
-    }
-  }
-
- private:
-  std::vector<std::unique_ptr<gd::ProjectDiagnostic>> projectDiagnostics;
-  gd::String sceneName;
-};
-
-/**
- * \brief
- */
-class GD_CORE_API WholeProjectDiagnosticReport {
- public:
-  WholeProjectDiagnosticReport() {};
-  virtual ~WholeProjectDiagnosticReport() {};
-
-  const DiagnosticReport &Get(std::size_t index) const {
-    return *diagnosticReports[index].get();
-  };
-
-  void Clear() { diagnosticReports.clear(); };
-
-  DiagnosticReport &AddNewDiagnosticReportForScene(
-      const gd::String &sceneName) {
-    auto diagnosticReport = gd::make_unique<gd::DiagnosticReport>();
-    diagnosticReport->SetSceneName(sceneName);
-    diagnosticReports.push_back(std::move(diagnosticReport));
-    return *diagnosticReports[diagnosticReports.size() - 1].get();
-  };
-
-  std::size_t Count() const { return diagnosticReports.size(); };
-
-  bool HasAnyIssue() {
-    for (auto &diagnosticReport : diagnosticReports) {
-      if (diagnosticReport->Count() > 0) {
-        return true;
-      }
-    }
-    return false;
-  }
-
- private:
-  std::vector<std::unique_ptr<gd::DiagnosticReport>> diagnosticReports;
-};
-
-}  // namespace gd
--- a/Core/GDCore/Events/CodeGeneration/EffectsCodeGenerator.cpp
+++ b/Core/GDCore/Events/CodeGeneration/EffectsCodeGenerator.cpp
@@ -15,7 +15,6 @@
 #include "GDCore/Project/Layout.h"
 #include "GDCore/Project/Object.h"
 #include "GDCore/Project/Project.h"
-#include "GDCore/Project/EventsFunctionsExtension.h"
 #include "GDCore/IDE/ProjectBrowserHelper.h"

 namespace gd {
@@ -48,9 +47,6 @@ void EffectsCodeGenerator::GenerateEffectsIncludeFiles(
  
  // TODO Merge with UsedExtensionsFinder.

-  // TODO Factorize with the iteration on all effects for resource exposure.
-  // TODO Implement an ArbitraryEffectWorker and add a method in ProjectBrowserHelper
-
  // See also gd::Project::ExposeResources for a method that traverse the whole
  // project (this time for resources) and
  // WholeProjectRefactorer::ExposeProjectEvents.
@@ -72,27 +68,6 @@ void EffectsCodeGenerator::GenerateEffectsIncludeFiles(

  // Add objects effects
  gd::ProjectBrowserHelper::ExposeProjectObjects(project, effectsCodeGenerator);
-
-  // Add event-based objects layouts effects
-  for (std::size_t s = 0; s < project.GetEventsFunctionsExtensionsCount();
-       s++) {
-    auto &eventsFunctionExtension = project.GetEventsFunctionsExtension(s);
-
-    auto &eventsBasedObjects = eventsFunctionExtension.GetEventsBasedObjects();
-    for (std::size_t objectIndex = 0;
-         objectIndex < eventsBasedObjects.GetCount(); ++objectIndex) {
-      auto &eventsBasedObject = eventsBasedObjects.Get(objectIndex);
-
-      auto &layers = eventsBasedObject.GetLayers();
-      for (std::size_t l = 0; l < layers.GetLayersCount(); ++l) {
-        auto &effects = layers.GetLayer(l).GetEffects();
-        for (std::size_t e = 0; e < effects.GetEffectsCount(); ++e) {
-          auto &effect = effects.GetEffect(e);
-          effectsCodeGenerator.AddEffectIncludeFiles(effect);
-        }
-      }
-    }
-  }
 }

 }  // namespace gd
--- a/Core/GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h
+++ b/Core/GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h
@@ -3,8 +3,8 @@
 * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
 * reserved. This project is released under the MIT License.
 */
-#pragma once
-
+#ifndef EVENTSCODEGENERATIONCONTEXT_H
+#define EVENTSCODEGENERATIONCONTEXT_H
 #include <map>
 #include <memory>
 #include <set>
@@ -325,3 +325,4 @@ class GD_CORE_API EventsCodeGenerationContext {
 };

 }  // namespace gd
+#endif  // EVENTSCODEGENERATIONCONTEXT_H
--- a/Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.cpp
+++ b/Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.cpp
@@ -14,7 +14,6 @@
 #include "GDCore/Extensions/Metadata/ParameterMetadataTools.h"
 #include "GDCore/Extensions/Platform.h"
 #include "GDCore/Extensions/PlatformExtension.h"
-#include "GDCore/IDE/Events/ExpressionVariableNameFinder.h"
 #include "GDCore/Project/Layout.h"
 #include "GDCore/Project/ObjectsContainer.h"
 #include "GDCore/Project/ObjectsContainersList.h"
@@ -42,15 +41,14 @@ gd::String EventsCodeGenerator::GenerateRelationalOperatorCall(
    const vector<gd::String>& arguments,
    const gd::String& callStartString,
    std::size_t startFromArgument) {
-  std::size_t relationalOperatorIndex = instrInfos.parameters.GetParametersCount();
-  for (std::size_t i = startFromArgument; i < instrInfos.parameters.GetParametersCount();
+  std::size_t relationalOperatorIndex = instrInfos.parameters.size();
+  for (std::size_t i = startFromArgument; i < instrInfos.parameters.size();
       ++i) {
-    if (instrInfos.parameters.GetParameter(i).GetType() == "relationalOperator") {
+    if (instrInfos.parameters[i].GetType() == "relationalOperator")
      relationalOperatorIndex = i;
-    }
  }
  // Ensure that there is at least one parameter after the relational operator
-  if (relationalOperatorIndex + 1 >= instrInfos.parameters.GetParametersCount()) {
+  if (relationalOperatorIndex + 1 >= instrInfos.parameters.size()) {
    ReportError();
    return "";
  }
@@ -77,11 +75,11 @@ gd::String EventsCodeGenerator::GenerateRelationalOperatorCall(

 /**
 * @brief Generate a relational operation
- *
+ * 
 * @param relationalOperator the operator
 * @param lhs the left hand operand
 * @param rhs the right hand operand
- * @return gd::String
+ * @return gd::String 
 */
 gd::String EventsCodeGenerator::GenerateRelationalOperation(
    const gd::String& relationalOperator,
@@ -123,16 +121,14 @@ gd::String EventsCodeGenerator::GenerateOperatorCall(
    const gd::String& callStartString,
    const gd::String& getterStartString,
    std::size_t startFromArgument) {
-  std::size_t operatorIndex = instrInfos.parameters.GetParametersCount();
-  for (std::size_t i = startFromArgument; i < instrInfos.parameters.GetParametersCount();
+  std::size_t operatorIndex = instrInfos.parameters.size();
+  for (std::size_t i = startFromArgument; i < instrInfos.parameters.size();
       ++i) {
-    if (instrInfos.parameters.GetParameter(i).GetType() == "operator") {
-      operatorIndex = i;
-    }
+    if (instrInfos.parameters[i].GetType() == "operator") operatorIndex = i;
  }

  // Ensure that there is at least one parameter after the operator
-  if (operatorIndex + 1 >= instrInfos.parameters.GetParametersCount()) {
+  if (operatorIndex + 1 >= instrInfos.parameters.size()) {
    ReportError();
    return "";
  }
@@ -194,16 +190,14 @@ gd::String EventsCodeGenerator::GenerateCompoundOperatorCall(
    const vector<gd::String>& arguments,
    const gd::String& callStartString,
    std::size_t startFromArgument) {
-  std::size_t operatorIndex = instrInfos.parameters.GetParametersCount();
-  for (std::size_t i = startFromArgument; i < instrInfos.parameters.GetParametersCount();
+  std::size_t operatorIndex = instrInfos.parameters.size();
+  for (std::size_t i = startFromArgument; i < instrInfos.parameters.size();
       ++i) {
-    if (instrInfos.parameters.GetParameter(i).GetType() == "operator") {
-      operatorIndex = i;
-    }
+    if (instrInfos.parameters[i].GetType() == "operator") operatorIndex = i;
  }

  // Ensure that there is at least one parameter after the operator
-  if (operatorIndex + 1 >= instrInfos.parameters.GetParametersCount()) {
+  if (operatorIndex + 1 >= instrInfos.parameters.size()) {
    ReportError();
    return "";
  }
@@ -247,27 +241,25 @@ gd::String EventsCodeGenerator::GenerateMutatorCall(
    const vector<gd::String>& arguments,
    const gd::String& callStartString,
    std::size_t startFromArgument) {
-  std::size_t operatorIndex = instrInfos.parameters.GetParametersCount();
-  for (std::size_t i = startFromArgument; i < instrInfos.parameters.GetParametersCount();
+  std::size_t operatorIndex = instrInfos.parameters.size();
+  for (std::size_t i = startFromArgument; i < instrInfos.parameters.size();
       ++i) {
-    if (instrInfos.parameters.GetParameter(i).GetType() == "operator") {
-      operatorIndex = i;
-    }
+    if (instrInfos.parameters[i].GetType() == "operator") operatorIndex = i;
  }

  // Ensure that there is at least one parameter after the operator
-  if (operatorIndex + 1 >= instrInfos.parameters.GetParametersCount()) {
+  if (operatorIndex + 1 >= instrInfos.parameters.size()) {
    ReportError();
    return "";
  }

  gd::String operatorStr = arguments[operatorIndex];
-  if (operatorStr.size() > 2 && operatorStr[0] == '\"') {
+  if (operatorStr.size() > 2)
    operatorStr = operatorStr.substr(
        1,
        operatorStr.length() - 1 -
            1);  // Operator contains quote which must be removed.
-  }
+
  auto mutators = instrInfos.codeExtraInformation.optionalMutators;
  auto mutator = mutators.find(operatorStr);
  if (mutator == mutators.end()) {
@@ -287,9 +279,6 @@ gd::String EventsCodeGenerator::GenerateMutatorCall(
      argumentsStr += arguments[i];
    }
  }
-  if (instrInfos.GetManipulatedType() == "boolean") {
-    return callStartString + "(" + argumentsStr + ")." + mutator->second;
-  }

  return callStartString + "(" + argumentsStr + ")." + mutator->second + "(" +
         rhs + ")";
@@ -323,36 +312,23 @@ gd::String EventsCodeGenerator::GenerateConditionCode(
  }

  // Insert code only parameters and be sure there is no lack of parameter.
-  while (condition.GetParameters().size() < instrInfos.parameters.GetParametersCount()) {
+  while (condition.GetParameters().size() < instrInfos.parameters.size()) {
    vector<gd::Expression> parameters = condition.GetParameters();
    parameters.push_back(gd::Expression(""));
    condition.SetParameters(parameters);
  }

-  gd::EventsCodeGenerator::CheckBehaviorParameters(condition, instrInfos);
  // Verify that there are no mismatches between object type in parameters.
-  for (std::size_t pNb = 0; pNb < instrInfos.parameters.GetParametersCount(); ++pNb) {
-    if (ParameterMetadata::IsObject(instrInfos.parameters.GetParameter(pNb).GetType())) {
+  for (std::size_t pNb = 0; pNb < instrInfos.parameters.size(); ++pNb) {
+    if (ParameterMetadata::IsObject(instrInfos.parameters[pNb].GetType())) {
      gd::String objectInParameter =
          condition.GetParameter(pNb).GetPlainString();

-      const auto &expectedObjectType =
-          instrInfos.parameters.GetParameter(pNb).GetExtraInfo();
-      const auto &actualObjectType =
-          GetObjectsContainersList().GetTypeOfObject(objectInParameter);
-      if (!GetObjectsContainersList().HasObjectOrGroupNamed(
-              objectInParameter)) {
-        gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::UnknownObject, "",
-            objectInParameter, "");
-        if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
+      if (!GetObjectsContainersList().HasObjectOrGroupNamed(objectInParameter)) {
        return "/* Unknown object - skipped. */";
-      } else if (!expectedObjectType.empty() &&
-                 actualObjectType != expectedObjectType) {
-        gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::MismatchedObjectType, "",
-            actualObjectType, expectedObjectType, objectInParameter);
-        if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
+      } else if (!instrInfos.parameters[pNb].GetExtraInfo().empty() &&
+                GetObjectsContainersList().GetTypeOfObject(objectInParameter) !=
+                     instrInfos.parameters[pNb].GetExtraInfo()) {
        return "/* Mismatched object type - skipped. */";
      }
    }
@@ -360,7 +336,7 @@ gd::String EventsCodeGenerator::GenerateConditionCode(

  if (instrInfos.IsObjectInstruction()) {
    gd::String objectName = condition.GetParameter(0).GetPlainString();
-    if (!objectName.empty() && instrInfos.parameters.GetParametersCount() > 0) {
+    if (!objectName.empty() && !instrInfos.parameters.empty()) {
      std::vector<gd::String> realObjects =
          GetObjectsContainersList().ExpandObjectName(objectName, context.GetCurrentObject());
      for (std::size_t i = 0; i < realObjects.size(); ++i) {
@@ -388,22 +364,15 @@ gd::String EventsCodeGenerator::GenerateConditionCode(
      }
    }
  } else if (instrInfos.IsBehaviorInstruction()) {
-    if (instrInfos.parameters.GetParametersCount() >= 2) {
-      const gd::String &objectName = condition.GetParameter(0).GetPlainString();
-      const gd::String &behaviorName =
-          condition.GetParameter(1).GetPlainString();
-      const gd::String &actualBehaviorType =
-          GetObjectsContainersList().GetTypeOfBehavior(behaviorName);
-
+    gd::String objectName = condition.GetParameter(0).GetPlainString();
+    gd::String behaviorType = GetObjectsContainersList().GetTypeOfBehavior(condition.GetParameter(1).GetPlainString());
+    if (instrInfos.parameters.size() >= 2) {
      std::vector<gd::String> realObjects =
-          GetObjectsContainersList().ExpandObjectName(
-              objectName, context.GetCurrentObject());
-
-      const BehaviorMetadata &autoInfo =
-          MetadataProvider::GetBehaviorMetadata(platform, actualBehaviorType);
-
+          GetObjectsContainersList().ExpandObjectName(objectName, context.GetCurrentObject());
      for (std::size_t i = 0; i < realObjects.size(); ++i) {
        // Setup context
+        const BehaviorMetadata& autoInfo =
+            MetadataProvider::GetBehaviorMetadata(platform, behaviorType);
        AddIncludeFiles(autoInfo.includeFiles);
        context.SetCurrentObject(realObjects[i]);
        context.ObjectsListNeeded(realObjects[i]);
@@ -413,7 +382,7 @@ gd::String EventsCodeGenerator::GenerateConditionCode(
            condition.GetParameters(), instrInfos.parameters, context);
        conditionCode += GenerateBehaviorCondition(
            realObjects[i],
-            behaviorName,
+            condition.GetParameter(1).GetPlainString(),
            autoInfo,
            arguments,
            instrInfos,
@@ -488,33 +457,6 @@ gd::String EventsCodeGenerator::GenerateConditionsListCode(
  return outputCode;
 }

-void EventsCodeGenerator::CheckBehaviorParameters(
-    const gd::Instruction &instruction,
-    const gd::InstructionMetadata &instrInfos) {
-  gd::ParameterMetadataTools::IterateOverParameters(
-      instruction.GetParameters(), instrInfos.parameters,
-      [this](const gd::ParameterMetadata &parameterMetadata,
-             const gd::Expression &parameterValue,
-             const gd::String &lastObjectName) {
-        if (ParameterMetadata::IsBehavior(parameterMetadata.GetType())) {
-          const gd::String &behaviorName = parameterValue.GetPlainString();
-          const gd::String &actualBehaviorType =
-              GetObjectsContainersList().GetTypeOfBehaviorInObjectOrGroup(
-                  lastObjectName, behaviorName);
-          const gd::String &expectedBehaviorType =
-              parameterMetadata.GetExtraInfo();
-
-          if (!expectedBehaviorType.empty() &&
-              actualBehaviorType != expectedBehaviorType) {
-            gd::ProjectDiagnostic projectDiagnostic(
-                gd::ProjectDiagnostic::ErrorType::MissingBehavior, "",
-                actualBehaviorType, expectedBehaviorType, lastObjectName);
-            if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
-          }
-        }
-      });
-}
-
 /**
 * Generate code for an action.
 */
@@ -546,35 +488,21 @@ gd::String EventsCodeGenerator::GenerateActionCode(
          : instrInfos.codeExtraInformation.functionCallName;

  // Be sure there is no lack of parameter.
-  while (action.GetParameters().size() < instrInfos.parameters.GetParametersCount()) {
+  while (action.GetParameters().size() < instrInfos.parameters.size()) {
    vector<gd::Expression> parameters = action.GetParameters();
    parameters.push_back(gd::Expression(""));
    action.SetParameters(parameters);
  }

-  gd::EventsCodeGenerator::CheckBehaviorParameters(action, instrInfos);
  // Verify that there are no mismatches between object type in parameters.
-  for (std::size_t pNb = 0; pNb < instrInfos.parameters.GetParametersCount(); ++pNb) {
-    if (ParameterMetadata::IsObject(instrInfos.parameters.GetParameter(pNb).GetType())) {
+  for (std::size_t pNb = 0; pNb < instrInfos.parameters.size(); ++pNb) {
+    if (ParameterMetadata::IsObject(instrInfos.parameters[pNb].GetType())) {
      gd::String objectInParameter = action.GetParameter(pNb).GetPlainString();
-
-      const auto &expectedObjectType =
-          instrInfos.parameters.GetParameter(pNb).GetExtraInfo();
-      const auto &actualObjectType =
-          GetObjectsContainersList().GetTypeOfObject(objectInParameter);
-      if (!GetObjectsContainersList().HasObjectOrGroupNamed(
-              objectInParameter)) {
-        gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::UnknownObject, "",
-            objectInParameter, "");
-        if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
+      if (!GetObjectsContainersList().HasObjectOrGroupNamed(objectInParameter)) {
        return "/* Unknown object - skipped. */";
-      } else if (!expectedObjectType.empty() &&
-                 actualObjectType != expectedObjectType) {
-        gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::MismatchedObjectType, "",
-            actualObjectType, expectedObjectType, objectInParameter);
-        if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
+      } else if (!instrInfos.parameters[pNb].GetExtraInfo().empty() &&
+                 GetObjectsContainersList().GetTypeOfObject(objectInParameter) !=
+                     instrInfos.parameters[pNb].GetExtraInfo()) {
        return "/* Mismatched object type - skipped. */";
      }
    }
@@ -584,7 +512,7 @@ gd::String EventsCodeGenerator::GenerateActionCode(
  if (instrInfos.IsObjectInstruction()) {
    gd::String objectName = action.GetParameter(0).GetPlainString();

-    if (instrInfos.parameters.GetParametersCount() > 0) {
+    if (!instrInfos.parameters.empty()) {
      std::vector<gd::String> realObjects =
          GetObjectsContainersList().ExpandObjectName(objectName, context.GetCurrentObject());
      for (std::size_t i = 0; i < realObjects.size(); ++i) {
@@ -612,22 +540,17 @@ gd::String EventsCodeGenerator::GenerateActionCode(
      }
    }
  } else if (instrInfos.IsBehaviorInstruction()) {
-    if (instrInfos.parameters.GetParametersCount() >= 2) {
-      const gd::String &objectName = action.GetParameter(0).GetPlainString();
-      const gd::String &behaviorName = action.GetParameter(1).GetPlainString();
-      const gd::String &actualBehaviorType =
-          GetObjectsContainersList().GetTypeOfBehavior(behaviorName);
+    gd::String objectName = action.GetParameter(0).GetPlainString();
+    gd::String behaviorType = GetObjectsContainersList().GetTypeOfBehavior(action.GetParameter(1).GetPlainString());

+    if (instrInfos.parameters.size() >= 2) {
      std::vector<gd::String> realObjects =
-          GetObjectsContainersList().ExpandObjectName(
-              objectName, context.GetCurrentObject());
-
-      const BehaviorMetadata &autoInfo =
-          MetadataProvider::GetBehaviorMetadata(platform, actualBehaviorType);
-
-      AddIncludeFiles(autoInfo.includeFiles);
+          GetObjectsContainersList().ExpandObjectName(objectName, context.GetCurrentObject());
      for (std::size_t i = 0; i < realObjects.size(); ++i) {
        // Setup context
+        const BehaviorMetadata& autoInfo =
+            MetadataProvider::GetBehaviorMetadata(platform, behaviorType);
+        AddIncludeFiles(autoInfo.includeFiles);
        context.SetCurrentObject(realObjects[i]);
        context.ObjectsListNeeded(realObjects[i]);

@@ -636,7 +559,7 @@ gd::String EventsCodeGenerator::GenerateActionCode(
            action.GetParameters(), instrInfos.parameters, context);
        actionCode +=
            GenerateBehaviorAction(realObjects[i],
-                                   behaviorName,
+                                   action.GetParameter(1).GetPlainString(),
                                   autoInfo,
                                   functionCallName,
                                   arguments,
@@ -660,29 +583,6 @@ gd::String EventsCodeGenerator::GenerateActionCode(
  return actionCode;
 }

-gd::String EventsCodeGenerator::GenerateLocalVariablesStackAccessor() {
-  return (HasProjectAndLayout() ? GetCodeNamespace()
-                                : "eventsFunctionContext") +
-         ".localVariables";
-}
-
-gd::String EventsCodeGenerator::GenerateAnyOrSceneVariableGetter(
-    const gd::Expression &variableExpression,
-    EventsCodeGenerationContext &context) {
-  const auto variableName = gd::ExpressionVariableNameFinder::GetVariableName(
-      *variableExpression.GetRootNode());
-
-  gd::String variableParameterType =
-      GetProjectScopedContainers().GetVariablesContainersList().Has(
-          variableName)
-          ? "variable"
-          : "scenevar";
-
-  return gd::ExpressionCodeGenerator::GenerateExpressionCode(
-      *this, context, variableParameterType,
-      variableExpression.GetPlainString(), "", "AllowUndeclaredVariable");
-}
-
 const EventsCodeGenerator::CallbackDescriptor
 EventsCodeGenerator::GenerateCallback(
    const gd::String& callbackID,
@@ -707,23 +607,14 @@ EventsCodeGenerator::GenerateCallback(
    actionsCode += "} //End of subevents\n";
  }

-  gd::String restoreLocalVariablesCode;
-  restoreLocalVariablesCode +=
-      "asyncObjectsList.restoreLocalVariablesContainers(" +
-      GenerateLocalVariablesStackAccessor() + ");\n";
-
  // Compose the callback function and add outside main
  const gd::String actionsDeclarationsCode =
      GenerateObjectsDeclarationCode(callbackContext);

-  const gd::String clearLocalVariablesCode =
-      GenerateLocalVariablesStackAccessor() + ".length = 0;\n";
-
  const gd::String callbackCode = callbackFunctionName + " = function (" +
                                  GenerateEventsParameters(callbackContext) +
-                                  ") {\n" + restoreLocalVariablesCode +
-                                  actionsDeclarationsCode + actionsCode +
-                                  clearLocalVariablesCode + "}\n";
+                                  ") {\n" + actionsDeclarationsCode +
+                                  actionsCode + "}\n";

  AddCustomCodeOutsideMain(callbackCode);

@@ -786,13 +677,13 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(

  if (ParameterMetadata::IsExpression("number", metadata.GetType())) {
    argOutput = gd::ExpressionCodeGenerator::GenerateExpressionCode(
-        *this, context, "number", parameter, lastObjectName, metadata.GetExtraInfo());
+        *this, context, "number", parameter, lastObjectName);
  } else if (ParameterMetadata::IsExpression("string", metadata.GetType())) {
    argOutput = gd::ExpressionCodeGenerator::GenerateExpressionCode(
-        *this, context, "string", parameter, lastObjectName, metadata.GetExtraInfo());
+        *this, context, "string", parameter, lastObjectName);
  } else if (ParameterMetadata::IsExpression("variable", metadata.GetType())) {
    argOutput = gd::ExpressionCodeGenerator::GenerateExpressionCode(
-        *this, context, metadata.GetType(), parameter, lastObjectName, metadata.GetExtraInfo());
+        *this, context, metadata.GetType(), parameter, lastObjectName);
  } else if (ParameterMetadata::IsObject(metadata.GetType())) {
    // It would be possible to run a gd::ExpressionCodeGenerator if later
    // objects can have nested objects, or function returning objects.
@@ -804,8 +695,7 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(
  } else if (metadata.GetType() == "operator") {
    argOutput += parameter.GetPlainString();
    if (argOutput != "=" && argOutput != "+" && argOutput != "-" &&
-        argOutput != "/" && argOutput != "*" && argOutput != "True" &&
-        argOutput != "False" && argOutput != "Toggle") {
+        argOutput != "/" && argOutput != "*") {
      cout << "Warning: Bad operator: Set to = by default." << endl;
      argOutput = "=";
    }
@@ -828,7 +718,7 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(
             metadata.GetType() == "spineResource" ||
             // Deprecated, old parameter names:
             metadata.GetType() == "password" || metadata.GetType() == "musicfile" ||
-             metadata.GetType() == "soundfile") {
+             metadata.GetType() == "soundfile" || metadata.GetType() == "police") {
    argOutput = "\"" + ConvertToString(parameter.GetPlainString()) + "\"";
  } else if (metadata.GetType() == "mouse") {
    argOutput = "\"" + ConvertToString(parameter.GetPlainString()) + "\"";
@@ -870,7 +760,7 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(

 vector<gd::String> EventsCodeGenerator::GenerateParametersCodes(
    const vector<gd::Expression>& parameters,
-    const ParameterMetadataContainer& parametersInfo,
+    const vector<gd::ParameterMetadata>& parametersInfo,
    EventsCodeGenerationContext& context,
    std::vector<std::pair<gd::String, gd::String> >*
        supplementaryParametersTypes) {
@@ -975,11 +865,6 @@ gd::String EventsCodeGenerator::GenerateEventsListCode(
    gd::EventsList& events, EventsCodeGenerationContext& parentContext) {
  gd::String output;
  for (std::size_t eId = 0; eId < events.size(); ++eId) {
-    auto& event = events[eId];
-    if (event.HasVariables()) {
-      GetProjectScopedContainers().GetVariablesContainersList().Push(event.GetVariables());
-    }
-
    // Each event has its own context : Objects picked in an event are totally
    // different than the one picked in another.
    gd::EventsCodeGenerationContext newContext;
@@ -1000,17 +885,13 @@ gd::String EventsCodeGenerator::GenerateEventsListCode(

    auto& context = reuseParentContext ? reusedContext : newContext;

-    gd::String eventCoreCode = event.GenerateEventCode(*this, context);
+    gd::String eventCoreCode = events[eId].GenerateEventCode(*this, context);
    gd::String scopeBegin = GenerateScopeBegin(context);
    gd::String scopeEnd = GenerateScopeEnd(context);
    gd::String declarationsCode = GenerateObjectsDeclarationCode(context);

    output += "\n" + scopeBegin + "\n" + declarationsCode + "\n" +
              eventCoreCode + "\n" + scopeEnd + "\n";
-
-    if (event.HasVariables()) {
-      GetProjectScopedContainers().GetVariablesContainersList().Pop();
-    }
  }

  return output;
@@ -1107,10 +988,10 @@ gd::String EventsCodeGenerator::GenerateFreeCondition(

  // Add logical not if needed
  bool conditionAlreadyTakeCareOfInversion = false;
-  for (std::size_t i = 0; i < instrInfos.parameters.GetParametersCount();
+  for (std::size_t i = 0; i < instrInfos.parameters.size();
       ++i)  // Some conditions already have a "conditionInverted" parameter
  {
-    if (instrInfos.parameters.GetParameter(i).GetType() == "conditionInverted")
+    if (instrInfos.parameters[i].GetType() == "conditionInverted")
      conditionAlreadyTakeCareOfInversion = true;
  }
  if (!conditionAlreadyTakeCareOfInversion && conditionInverted)
@@ -1131,7 +1012,7 @@ gd::String EventsCodeGenerator::GenerateObjectCondition(
  // Prepare call
  // Add a static_cast if necessary
  gd::String objectFunctionCallNamePart =
-      (!instrInfos.parameters.GetParameter(0).GetExtraInfo().empty())
+      (!instrInfos.parameters[0].GetExtraInfo().empty())
          ? "static_cast<" + objInfo.className + "*>(" +
                GetObjectListName(objectName, context) + "[i])->" +
                instrInfos.codeExtraInformation.functionCallName
@@ -1186,13 +1067,7 @@ gd::String EventsCodeGenerator::GenerateFreeAction(
  // Generate call
  gd::String call;
  if (instrInfos.codeExtraInformation.type == "number" ||
-      instrInfos.codeExtraInformation.type == "string" ||
-      // Boolean actions declared with addExpressionAndConditionAndAction uses
-      // MutatorAndOrAccessor even though they don't declare an operator parameter.
-      // Boolean operators are only used with SetMutators or SetCustomCodeGenerator.
-      (instrInfos.codeExtraInformation.type == "boolean" &&
-       instrInfos.codeExtraInformation.accessType ==
-           gd::InstructionMetadata::ExtraInformation::AccessType::Mutators)) {
+      instrInfos.codeExtraInformation.type == "string") {
    if (instrInfos.codeExtraInformation.accessType ==
        gd::InstructionMetadata::ExtraInformation::MutatorAndOrAccessor)
      call = GenerateOperatorCall(
@@ -1358,30 +1233,12 @@ gd::String EventsCodeGenerator::GeneratePropertyGetter(const gd::PropertiesConta
  return "getProperty" + property.GetName() + "As" + type + "()";
 }

-gd::String EventsCodeGenerator::GeneratePropertyGetterWithoutCasting(
-    const gd::PropertiesContainer &propertiesContainer,
-    const gd::NamedPropertyDescriptor &property) {
-  return "getProperty" + property.GetName() + "()";
-}
-
-gd::String EventsCodeGenerator::GeneratePropertySetterWithoutCasting(
-    const gd::PropertiesContainer &propertiesContainer,
-    const gd::NamedPropertyDescriptor &property,
-    const gd::String &operandCode) {
-  return "setProperty" + property.GetName() + "(" + operandCode + ")";
-    }
-
 gd::String EventsCodeGenerator::GenerateParameterGetter(const gd::ParameterMetadata& parameter,
                                                        const gd::String& type,
                                                        gd::EventsCodeGenerationContext& context) {
  return "getParameter" + parameter.GetName() + "As" + type + "()";
 }

-gd::String EventsCodeGenerator::GenerateParameterGetterWithoutCasting(
-    const gd::ParameterMetadata &parameter) {
-      return "getParameter" + parameter.GetName() + "()";
-    }
-
 EventsCodeGenerator::EventsCodeGenerator(const gd::Project& project_,
                                         const gd::Layout& layout,
                                         const gd::Platform& platform_)
@@ -1394,8 +1251,7 @@ EventsCodeGenerator::EventsCodeGenerator(const gd::Project& project_,
      compilationForRuntime(false),
      maxCustomConditionsDepth(0),
      maxConditionsListsSize(0),
-      eventsListNextUniqueId(0),
-      diagnosticReport(nullptr){};
+      eventsListNextUniqueId(0){};

 EventsCodeGenerator::EventsCodeGenerator(
    const gd::Platform& platform_,
@@ -1409,7 +1265,6 @@ EventsCodeGenerator::EventsCodeGenerator(
      compilationForRuntime(false),
      maxCustomConditionsDepth(0),
      maxConditionsListsSize(0),
-      eventsListNextUniqueId(0),
-      diagnosticReport(nullptr){};
+      eventsListNextUniqueId(0){};

 }  // namespace gd
--- a/Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.h
+++ b/Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.h
@@ -3,7 +3,8 @@
 * Copyright 2008-present Florian Rival (Florian.Rival@gmail.com). All rights
 * reserved. This project is released under the MIT License.
 */
-#pragma once
+#ifndef GDCORE_EVENTSCODEGENERATOR_H
+#define GDCORE_EVENTSCODEGENERATOR_H

 #include <set>
 #include <utility>
@@ -11,10 +12,8 @@

 #include "GDCore/Events/Event.h"
 #include "GDCore/Events/Instruction.h"
-#include "GDCore/Events/CodeGeneration/DiagnosticReport.h"
 #include "GDCore/Project/ProjectScopedContainers.h"
 #include "GDCore/String.h"
-
 namespace gd {
 class EventsList;
 class Expression;
@@ -128,7 +127,7 @@ class GD_CORE_API EventsCodeGenerator {
   */
  std::vector<gd::String> GenerateParametersCodes(
      const std::vector<gd::Expression>& parameters,
-      const ParameterMetadataContainer& parametersInfo,
+      const std::vector<gd::ParameterMetadata>& parametersInfo,
      EventsCodeGenerationContext& context,
      std::vector<std::pair<gd::String, gd::String> >*
          supplementaryParametersTypes = 0);
@@ -337,16 +336,6 @@ class GD_CORE_API EventsCodeGenerator {
    return projectScopedContainers;
  }

-  /**
-   * @brief Give access to the project scoped containers as code generation might
-   * push and pop variable containers (for local variables).
-   * This could be passed as a parameter recursively in code generation, but this requires
-   * heavy refactoring. Instead, we use this single instance.
-   */
-  gd::ProjectScopedContainers& GetProjectScopedContainers() {
-    return projectScopedContainers;
-  }
-
  /**
   * \brief Return true if the code generation is done for a given project and
   * layout. If not, this means that the code is generated for a function.
@@ -383,14 +372,6 @@ class GD_CORE_API EventsCodeGenerator {
   */
  size_t GetMaxConditionsListsSize() const { return maxConditionsListsSize; }

-  void SetDiagnosticReport(gd::DiagnosticReport* diagnosticReport_) {
-    diagnosticReport = diagnosticReport_;
-  }
-
-  gd::DiagnosticReport* GetDiagnosticReport() {
-    return diagnosticReport;
-  }
-
  /**
   * \brief Generate the full name for accessing to a boolean variable used for
   * conditions.
@@ -467,14 +448,7 @@ class GD_CORE_API EventsCodeGenerator {
   */
  virtual gd::String GetCodeNamespace() { return ""; };

-  enum VariableScope {
-    LAYOUT_VARIABLE = 0,
-    PROJECT_VARIABLE,
-    OBJECT_VARIABLE,
-    ANY_VARIABLE,
-    VARIABLE_OR_PROPERTY,
-    VARIABLE_OR_PROPERTY_OR_PARAMETER
-  };
+  enum VariableScope { LAYOUT_VARIABLE = 0, PROJECT_VARIABLE, OBJECT_VARIABLE };

  /**
   * Generate a single unique number for the specified instruction.
@@ -504,25 +478,7 @@ class GD_CORE_API EventsCodeGenerator {
      const gd::String& lhs,
      const gd::String& rhs);

-  /**
-   * \brief Generate the code to access the local variables stack.
-   */
-  virtual gd::String GenerateLocalVariablesStackAccessor();
-
-  /**
-   * \brief Generate an any variable getter that fallbacks on scene variable for
-   * compatibility reason.
-   */
-  gd::String
-  GenerateAnyOrSceneVariableGetter(const gd::Expression &variableExpression,
-                                   EventsCodeGenerationContext &context);
-
-  virtual gd::String GeneratePropertySetterWithoutCasting(
-      const gd::PropertiesContainer &propertiesContainer,
-      const gd::NamedPropertyDescriptor &property,
-      const gd::String &operandCode);
-
-protected:
+ protected:
  virtual const gd::String GenerateRelationalOperatorCodes(
      const gd::String& operatorString);

@@ -540,7 +496,7 @@ protected:
  parameter -> string
   * - operator : Used to update a value using a setter and a getter -> string
   * - key, mouse, objectvar, scenevar, globalvar, password, musicfile,
-  soundfile -> string
+  soundfile, police -> string
   * - trueorfalse, yesorno -> boolean ( See GenerateTrue/GenerateFalse ).
   *
   * <br><br>
@@ -577,19 +533,12 @@ protected:
      const gd::String& variableName,
      const VariableScope& scope,
      gd::EventsCodeGenerationContext& context,
-      const gd::String& objectName,
-      bool hasChild) {
-    // This code is only used as a mock.
-    // See the real implementation in GDJS.
+      const gd::String& objectName) {
    if (scope == LAYOUT_VARIABLE) {
      return "getLayoutVariable(" + variableName + ")";

    } else if (scope == PROJECT_VARIABLE) {
      return "getProjectVariable(" + variableName + ")";
-    } else if (scope == ANY_VARIABLE || scope == VARIABLE_OR_PROPERTY ||
-               scope == VARIABLE_OR_PROPERTY_OR_PARAMETER) {
-      // TODO Split the 3 cases to make tests stronger.
-      return "getAnyVariable(" + variableName + ")";
    }

    return "getVariableForObject(" + objectName + ", " + variableName + ")";
@@ -642,18 +591,11 @@ protected:
      const gd::String& type,
      gd::EventsCodeGenerationContext& context);

-  virtual gd::String GeneratePropertyGetterWithoutCasting(
-      const gd::PropertiesContainer &propertiesContainer,
-      const gd::NamedPropertyDescriptor &property);
-
  virtual gd::String GenerateParameterGetter(
      const gd::ParameterMetadata& parameter,
      const gd::String& type,
      gd::EventsCodeGenerationContext& context);

-  virtual gd::String
-  GenerateParameterGetterWithoutCasting(const gd::ParameterMetadata &parameter);
-
  /**
   * \brief Generate the code to reference an object which is
   * in an empty/null state.
@@ -837,10 +779,6 @@ protected:
  virtual gd::String GenerateGetBehaviorNameCode(
      const gd::String& behaviorName);

-  void CheckBehaviorParameters(
-      const gd::Instruction &instruction,
-      const gd::InstructionMetadata &instrInfos);
-
  const gd::Platform& platform;  ///< The platform being used.

  gd::ProjectScopedContainers projectScopedContainers;
@@ -871,9 +809,8 @@ protected:
      instructionUniqueIds;  ///< The unique ids generated for instructions.
  size_t eventsListNextUniqueId;  ///< The next identifier to use for an events
                                  ///< list function name.
-
-  gd::DiagnosticReport* diagnosticReport;
 };

 }  // namespace gd

+#endif  // GDCORE_EVENTSCODEGENERATOR_H
--- a/Core/GDCore/Events/CodeGeneration/ExpressionCodeGenerator.cpp
+++ b/Core/GDCore/Events/CodeGeneration/ExpressionCodeGenerator.cpp
@@ -31,7 +31,6 @@
 #include "GDCore/Project/ProjectScopedContainers.h"
 #include "GDCore/IDE/Events/ExpressionTypeFinder.h"
 #include "GDCore/IDE/Events/ExpressionVariableOwnerFinder.h"
-#include "GDCore/Events/CodeGeneration/DiagnosticReport.h"

 namespace gd {

@@ -40,8 +39,7 @@ gd::String ExpressionCodeGenerator::GenerateExpressionCode(
    EventsCodeGenerationContext& context,
    const gd::String& rootType,
    const gd::Expression& expression,
-    const gd::String& rootObjectName,
-    const gd::String& extraInfo) {
+    const gd::String& rootObjectName) {
  ExpressionCodeGenerator generator(rootType, rootObjectName, codeGenerator, context);

  auto node = expression.GetRootNode();
@@ -54,34 +52,13 @@ gd::String ExpressionCodeGenerator::GenerateExpressionCode(

  gd::ExpressionValidator validator(codeGenerator.GetPlatform(),
                                    codeGenerator.GetProjectScopedContainers(),
-                                    rootType,
-                                    extraInfo);
+                                    rootType);
  node->Visit(validator);
  if (!validator.GetFatalErrors().empty()) {
    std::cout << "Error: \"" << validator.GetFatalErrors()[0]->GetMessage()
              << "\" in: \"" << expression.GetPlainString() << "\" ("
              << rootType << ")" << std::endl;

-    auto *diagnosticReport = codeGenerator.GetDiagnosticReport();
-    if (diagnosticReport) {
-      for (auto *error : validator.GetFatalErrors()) {
-        if (error->GetType() ==
-                gd::ExpressionParserError::ErrorType::UndeclaredVariable ||
-            error->GetType() ==
-                gd::ExpressionParserError::ErrorType::UnknownIdentifier) {
-                  
-          const auto& variableName = error->GetActualValue();
-          if (!variableName.empty()) {
-            gd::ProjectDiagnostic projectDiagnostic(
-                gd::ProjectDiagnostic::ErrorType::UndeclaredVariable,
-                error->GetMessage(), error->GetActualValue(),
-                "", error->GetObjectName());
-            diagnosticReport->Add(projectDiagnostic);
-          }
-        }
-      }
-    }
-
    return generator.GenerateDefaultValue(rootType);
  }

@@ -133,22 +110,18 @@ void ExpressionCodeGenerator::OnVisitVariableNode(VariableNode& node) {
  if (gd::ParameterMetadata::IsExpression("variable", type)) {
    // The node is a variable inside an expression waiting for a *variable* to be returned, not its value.
    EventsCodeGenerator::VariableScope scope =
-        type == "variable"
-            ? gd::EventsCodeGenerator::ANY_VARIABLE
-        : type == "variableOrProperty"
-            ? gd::EventsCodeGenerator::VARIABLE_OR_PROPERTY
-        : type == "variableOrPropertyOrParameter"
-            ? gd::EventsCodeGenerator::VARIABLE_OR_PROPERTY_OR_PARAMETER
-        : type == "globalvar" ? gd::EventsCodeGenerator::PROJECT_VARIABLE
-        : type == "scenevar"  ? gd::EventsCodeGenerator::LAYOUT_VARIABLE
-                              : gd::EventsCodeGenerator::OBJECT_VARIABLE;
+        type == "globalvar"
+            ? gd::EventsCodeGenerator::PROJECT_VARIABLE
+            : ((type == "scenevar")
+                  ? gd::EventsCodeGenerator::LAYOUT_VARIABLE
+                  : gd::EventsCodeGenerator::OBJECT_VARIABLE);

    auto objectName = gd::ExpressionVariableOwnerFinder::GetObjectName(codeGenerator.GetPlatform(),
                                          codeGenerator.GetObjectsContainersList(),
                                          rootObjectName,
                                          node);
    output += codeGenerator.GenerateGetVariable(
-        node.name, scope, context, objectName, node.child != nullptr);
+        node.name, scope, context, objectName);
    if (node.child) node.child->Visit(*this);
  } else {
    // The node represents a variable or an object variable in an expression waiting for its *value* to be returned.
@@ -164,8 +137,19 @@ void ExpressionCodeGenerator::OnVisitVariableNode(VariableNode& node) {

      output += codeGenerator.GenerateVariableValueAs(type);
    }, [&]() {
-      output += codeGenerator.GenerateGetVariable(
-          node.name, gd::EventsCodeGenerator::ANY_VARIABLE, context, "", node.child != nullptr);
+      if (!codeGenerator.HasProjectAndLayout()) {
+        gd::LogWarning("Tried to generate access to a variable without a project/scene - the code generator only works for global and scene variables for now.");
+        output += GenerateDefaultValue(type);
+        return;
+      }
+
+      // This could be adapted in the future if more scopes are supported.
+      EventsCodeGenerator::VariableScope scope = gd::EventsCodeGenerator::PROJECT_VARIABLE;
+      if (codeGenerator.GetProjectScopedContainers().GetVariablesContainersList().GetBottomMostVariablesContainer()->Has(node.name)) {
+        scope = gd::EventsCodeGenerator::LAYOUT_VARIABLE;
+      }
+
+      output += codeGenerator.GenerateGetVariable(node.name, scope, context, "");
      if (node.child) node.child->Visit(*this);
      output += codeGenerator.GenerateVariableValueAs(type);
    }, [&]() {
@@ -186,9 +170,8 @@ void ExpressionCodeGenerator::OnVisitVariableAccessorNode(
    VariableAccessorNode& node) {
    if (!objectNameToUseForVariableAccessor.empty()) {
      // Use the name of the object passed by the parent, as we need both to access an object variable.
-      output += codeGenerator.GenerateGetVariable(
-          node.name, gd::EventsCodeGenerator::OBJECT_VARIABLE, context,
-          objectNameToUseForVariableAccessor, node.child != nullptr);
+      output += codeGenerator.GenerateGetVariable(node.name,
+          gd::EventsCodeGenerator::OBJECT_VARIABLE, context, objectNameToUseForVariableAccessor);

      // We have accessed an object variable, from now we can continue accessing the child variables
      // (including using the bracket notation).
@@ -225,27 +208,22 @@ void ExpressionCodeGenerator::OnVisitIdentifierNode(IdentifierNode& node) {
    output +=
        codeGenerator.GenerateObject(node.identifierName, type, context);
  } else if (gd::ParameterMetadata::IsExpression("variable", type)) {
-    EventsCodeGenerator::VariableScope scope =
-        type == "variable"
-            ? gd::EventsCodeGenerator::ANY_VARIABLE
-        : type == "variableOrProperty"
-            ? gd::EventsCodeGenerator::VARIABLE_OR_PROPERTY
-        : type == "variableOrPropertyOrParameter"
-            ? gd::EventsCodeGenerator::VARIABLE_OR_PROPERTY_OR_PARAMETER
-        : type == "globalvar" ? gd::EventsCodeGenerator::PROJECT_VARIABLE
-        : type == "scenevar"  ? gd::EventsCodeGenerator::LAYOUT_VARIABLE
-                              : gd::EventsCodeGenerator::OBJECT_VARIABLE;
+      EventsCodeGenerator::VariableScope scope =
+          type == "globalvar"
+              ? gd::EventsCodeGenerator::PROJECT_VARIABLE
+              : ((type == "scenevar")
+                    ? gd::EventsCodeGenerator::LAYOUT_VARIABLE
+                    : gd::EventsCodeGenerator::OBJECT_VARIABLE);

-    auto objectName = gd::ExpressionVariableOwnerFinder::GetObjectName(
-        codeGenerator.GetPlatform(), codeGenerator.GetObjectsContainersList(),
-        rootObjectName, node);
-    output += codeGenerator.GenerateGetVariable(
-        node.identifierName, scope, context, objectName,
-        !node.childIdentifierName.empty());
-    if (!node.childIdentifierName.empty()) {
-      output +=
-          codeGenerator.GenerateVariableAccessor(node.childIdentifierName);
-    }
+      auto objectName = gd::ExpressionVariableOwnerFinder::GetObjectName(codeGenerator.GetPlatform(),
+                                            codeGenerator.GetObjectsContainersList(),
+                                            rootObjectName,
+                                            node);
+      output += codeGenerator.GenerateGetVariable(
+          node.identifierName, scope, context, objectName);
+      if (!node.childIdentifierName.empty()) {
+        output += codeGenerator.GenerateVariableAccessor(node.childIdentifierName);
+      }
  } else {
    const auto& variablesContainersList = codeGenerator.GetProjectScopedContainers().GetVariablesContainersList();
    const auto& propertiesContainersList = codeGenerator.GetProjectScopedContainers().GetPropertiesContainersList();
@@ -255,13 +233,22 @@ void ExpressionCodeGenerator::OnVisitIdentifierNode(IdentifierNode& node) {
    codeGenerator.GetProjectScopedContainers().MatchIdentifierWithName<void>(node.identifierName, [&]() {
      // Generate the code to access the object variable.
      output += codeGenerator.GenerateGetVariable(
-          node.childIdentifierName, gd::EventsCodeGenerator::OBJECT_VARIABLE,
-          context, node.identifierName, !node.childIdentifierName.empty());
+        node.childIdentifierName, gd::EventsCodeGenerator::OBJECT_VARIABLE, context, node.identifierName);
      output += codeGenerator.GenerateVariableValueAs(type);
    }, [&]() {
-      output += codeGenerator.GenerateGetVariable(
-          node.identifierName, gd::EventsCodeGenerator::VARIABLE_OR_PROPERTY_OR_PARAMETER, context,
-          "", !node.childIdentifierName.empty());
+      if (!codeGenerator.HasProjectAndLayout()) {
+        gd::LogWarning("Tried to generate access to a variable without a project/scene - the code generator only works for global and scene variables for now.");
+        output += GenerateDefaultValue(type);
+        return;
+      }
+
+      // This could be adapted in the future if more scopes are supported at runtime.
+      EventsCodeGenerator::VariableScope scope = gd::EventsCodeGenerator::PROJECT_VARIABLE;
+      if (variablesContainersList.GetBottomMostVariablesContainer()->Has(node.identifierName)) {
+        scope = gd::EventsCodeGenerator::LAYOUT_VARIABLE;
+      }
+
+      output += codeGenerator.GenerateGetVariable(node.identifierName, scope, context, "");
      if (!node.childIdentifierName.empty()) {
        output += codeGenerator.GenerateVariableAccessor(node.childIdentifierName);
      }
@@ -437,11 +424,11 @@ gd::String ExpressionCodeGenerator::GenerateParametersCodes(
  size_t nonCodeOnlyParameterIndex = 0;
  gd::String parametersCode;
  for (std::size_t i = initialParameterIndex;
-       i < expressionMetadata.GetParameters().GetParametersCount();
+       i < expressionMetadata.parameters.size();
       ++i) {
    if (i != initialParameterIndex) parametersCode += ", ";

-    auto& parameterMetadata = expressionMetadata.GetParameters().GetParameter(i);
+    auto& parameterMetadata = expressionMetadata.parameters[i];
    if (!parameterMetadata.IsCodeOnly()) {
      if (nonCodeOnlyParameterIndex < parameters.size()) {
        auto objectName = gd::ExpressionVariableOwnerFinder::GetObjectName(codeGenerator.GetPlatform(),
--- a/Core/GDCore/Events/CodeGeneration/ExpressionCodeGenerator.h
+++ b/Core/GDCore/Events/CodeGeneration/ExpressionCodeGenerator.h
@@ -59,8 +59,7 @@ class GD_CORE_API ExpressionCodeGenerator : public ExpressionParser2NodeWorker {
                                           EventsCodeGenerationContext& context,
                                           const gd::String& type,
                                           const gd::Expression& expression,
-                                           const gd::String& objectName = "",
-                                           const gd::String& extraInfo = "");
+                                           const gd::String& objectName = "");

  const gd::String& GetOutput() { return output; };

--- a/Core/GDCore/Events/Event.cpp
+++ b/Core/GDCore/Events/Event.cpp
@@ -17,7 +17,8 @@
 namespace gd {

 EventsList BaseEvent::badSubEvents;
-VariablesContainer BaseEvent::badLocalVariables;
+std::vector<gd::String> BaseEvent::emptyDependencies;
+gd::String BaseEvent::emptySourceFile;

 BaseEvent::BaseEvent()
    : totalTimeDuringLastSession(0),
@@ -27,8 +28,6 @@ BaseEvent::BaseEvent()

 bool BaseEvent::HasSubEvents() const { return !GetSubEvents().IsEmpty(); }

-bool BaseEvent::HasVariables() const { return GetVariables().Count() > 0; }
-
 gd::String BaseEvent::GenerateEventCode(
    gd::EventsCodeGenerator& codeGenerator,
    gd::EventsCodeGenerationContext& context) {
--- a/Core/GDCore/Events/Event.h
+++ b/Core/GDCore/Events/Event.h
@@ -3,7 +3,9 @@
 * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
 * reserved. This project is released under the MIT License.
 */
-#pragma once
+#if defined(GD_IDE_ONLY)
+#ifndef GDCORE_EVENT_H
+#define GDCORE_EVENT_H

 #include <iostream>
 #include <memory>
@@ -24,7 +26,6 @@ class SerializerElement;
 class Instruction;
 class EventVisitor;
 class ReadOnlyEventVisitor;
-class VariablesContainer;
 }  // namespace gd

 namespace gd {
@@ -91,32 +92,6 @@ class GD_CORE_API BaseEvent {
   */
  bool HasSubEvents() const;

-  /**
-   * Derived class have to redefine this function, so as to return true, if they
-   * can have local variables.
-   */
-  virtual bool CanHaveVariables() const { return false; }
-
-  /**
-   * Return the local variables, if applicable.
-   */
-  virtual const gd::VariablesContainer& GetVariables() const {
-    return badLocalVariables;
-  };
-
-  /**
-   * Return the local variables, if applicable.
-   */
-  virtual gd::VariablesContainer& GetVariables() {
-    return badLocalVariables;
-  };
-
-  /**
-   * \brief Return true if the events has local variables.
-   * \warning This is only applicable when CanHaveVariables() return true.
-   */
-  bool HasVariables() const;
-
  /**
   * \brief Return a list of all conditions of the event.
   * \note Used to preprocess or search in the conditions.
@@ -175,6 +150,26 @@ class GD_CORE_API BaseEvent {
        noExpr;
    return noExpr;
  };
+
+  /**
+   * \brief Returns the dependencies on source files of the project.
+   * \note Default implementation returns an empty list of dependencies. This is
+   * fine for most events that are not related to adding custom user source
+   * code.
+   */
+  virtual const std::vector<gd::String>& GetSourceFileDependencies() const {
+    return emptyDependencies;
+  };
+
+  /**
+   * \brief Returns the name of the source file associated with the event
+   * \note Default implementation returns an empty string. This is fine for most
+   * events that are not related to adding custom user source code.
+   */
+  virtual const gd::String& GetAssociatedGDManagedSourceFile(
+      gd::Project& project) const {
+    return emptySourceFile;
+  };
  ///@}

  /** \name Code generation
@@ -286,20 +281,6 @@ class GD_CORE_API BaseEvent {
   * \brief True if the event should be folded in the events editor.
   */
  bool IsFolded() const { return folded; }
-
-  /**
-   * \brief Set the AI generated event ID.
-   */
-  void SetAiGeneratedEventId(const gd::String& aiGeneratedEventId_) {
-    aiGeneratedEventId = aiGeneratedEventId_;
-  }
-
-  /**
-   * \brief Get the AI generated event ID.
-   */
-  const gd::String& GetAiGeneratedEventId() const {
-    return aiGeneratedEventId;
-  }
  ///@}

  std::weak_ptr<gd::BaseEvent>
@@ -318,10 +299,10 @@ class GD_CORE_API BaseEvent {
  bool disabled;    ///< True if the event is disabled and must not be executed
  gd::String type;  ///< Type of the event. Must be assigned at the creation.
                    ///< Used for saving the event for instance.
-  gd::String aiGeneratedEventId;  ///< When generated by an AI/external tool.

  static gd::EventsList badSubEvents;
-  static gd::VariablesContainer badLocalVariables;
+  static std::vector<gd::String> emptyDependencies;
+  static gd::String emptySourceFile;
 };

 /**
@@ -344,3 +325,6 @@ class EmptyEvent : public BaseEvent {
 };

 }  // namespace gd
+
+#endif  // GDCORE_EVENT_H
+#endif
--- a/Core/GDCore/Events/EventsList.h
+++ b/Core/GDCore/Events/EventsList.h
@@ -18,6 +18,7 @@ class BaseEvent;
 namespace gd {
 class SerializerElement;
 }
+class TiXmlElement;

 #undef CreateEvent

--- a/Core/GDCore/Events/Parsers/ExpressionParser2.h
+++ b/Core/GDCore/Events/Parsers/ExpressionParser2.h
@@ -38,7 +38,7 @@ using namespace gd::GrammarTerminals;
 * parser by refactoring out the dependency on gd::MetadataProvider (injecting
 * instead functions to be called to query supported functions).
 *
- * \see gd::ExpressionParserError
+ * \see gd::ExpressionParserDiagnostic
 * \see gd::ExpressionNode
 */
 class GD_CORE_API ExpressionParser2 {
@@ -547,28 +547,28 @@ class GD_CORE_API ExpressionParser2 {
  }
  ///@}

-  std::unique_ptr<ExpressionParserError> ValidateOperator(
+  std::unique_ptr<ExpressionParserDiagnostic> ValidateOperator(
      gd::String::value_type operatorChar) {
    if (operatorChar == '+' || operatorChar == '-' || operatorChar == '/' ||
        operatorChar == '*') {
-      return std::unique_ptr<ExpressionParserError>(nullptr);
+      return gd::make_unique<ExpressionParserDiagnostic>();
    }
    return gd::make_unique<ExpressionParserError>(
-        gd::ExpressionParserError::ErrorType::InvalidOperator,
+        "invalid_operator",
        _("You've used an operator that is not supported. Operator should be "
          "either +, -, / or *."),
        GetCurrentPosition());
  }

-  std::unique_ptr<ExpressionParserError> ValidateUnaryOperator(
+  std::unique_ptr<ExpressionParserDiagnostic> ValidateUnaryOperator(
      gd::String::value_type operatorChar,
      size_t position) {
    if (operatorChar == '+' || operatorChar == '-') {
-      return std::unique_ptr<ExpressionParserError>(nullptr);
+      return gd::make_unique<ExpressionParserDiagnostic>();
    }

    return gd::make_unique<ExpressionParserError>(
-        gd::ExpressionParserError::ErrorType::InvalidOperator,
+        "invalid_operator",
        _("You've used an \"unary\" operator that is not supported. Operator "
          "should be "
          "either + or -."),
@@ -719,15 +719,13 @@ class GD_CORE_API ExpressionParser2 {
  std::unique_ptr<ExpressionParserError> RaiseSyntaxError(
      const gd::String &message) {
    return std::move(gd::make_unique<ExpressionParserError>(
-        gd::ExpressionParserError::ErrorType::SyntaxError, message,
-        GetCurrentPosition()));
+        "syntax_error", message, GetCurrentPosition()));
  }

  std::unique_ptr<ExpressionParserError> RaiseTypeError(
      const gd::String &message, size_t beginningPosition) {
    return std::move(gd::make_unique<ExpressionParserError>(
-        gd::ExpressionParserError::ErrorType::MismatchedType, message,
-        beginningPosition, GetCurrentPosition()));
+        "type_error", message, beginningPosition, GetCurrentPosition()));
  }
  ///@}

--- a/Core/GDCore/Events/Parsers/ExpressionParser2Node.cpp
+++ b/Core/GDCore/Events/Parsers/ExpressionParser2Node.cpp
@@ -6,5 +6,5 @@
 #include "ExpressionParser2Node.h"

 namespace gd {
-
+gd::String ExpressionParserDiagnostic::noMessage = "";
 }
--- a/Core/GDCore/Events/Parsers/ExpressionParser2Node.h
+++ b/Core/GDCore/Events/Parsers/ExpressionParser2Node.h
@@ -3,14 +3,14 @@
 * Copyright 2008-present Florian Rival (Florian.Rival@gmail.com). All rights
 * reserved. This project is released under the MIT License.
 */
-#pragma once
+#ifndef GDCORE_EXPRESSIONPARSER2NODES_H
+#define GDCORE_EXPRESSIONPARSER2NODES_H

 #include <memory>
 #include <vector>

 #include "ExpressionParser2NodeWorker.h"
 #include "GDCore/String.h"
-
 namespace gd {
 class Expression;
 class ObjectsContainer;
@@ -36,61 +36,54 @@ struct GD_CORE_API ExpressionParserLocation {

 private:
  bool isValid;
-  size_t startPosition = 0;
-  size_t endPosition = 0;
+  size_t startPosition;
+  size_t endPosition;
+};
+
+/**
+ * \brief A diagnostic that can be attached to a gd::ExpressionNode.
+ */
+struct GD_CORE_API ExpressionParserDiagnostic {
+  virtual ~ExpressionParserDiagnostic() = default;
+  virtual bool IsError() { return false; }
+  virtual const gd::String &GetMessage() { return noMessage; }
+  virtual size_t GetStartPosition() { return 0; }
+  virtual size_t GetEndPosition() { return 0; }
+
+ private:
+  static gd::String noMessage;
 };

 /**
 * \brief An error that can be attached to a gd::ExpressionNode.
 */
-struct GD_CORE_API ExpressionParserError {
-  enum ErrorType {
-    SyntaxError,
-    InvalidOperator,
-    MismatchedType,
-    UndeclaredVariable,
-    UnknownIdentifier,
-    BracketsNotAllowedForObjects,
-    TooFewParameters,
-    TooManyParameters,
-    InvalidFunctionName,
-    MalformedVariableParameter,
-    MalformedObjectParameter,
-    UnknownParameterType,
-    MissingBehavior,
-    VariableNameCollision,
-  };
-
-  ExpressionParserError(gd::ExpressionParserError::ErrorType type_,
+struct GD_CORE_API ExpressionParserError : public ExpressionParserDiagnostic {
+  ExpressionParserError(const gd::String &type_,
                        const gd::String &message_,
-                        const ExpressionParserLocation &location_,
-                        const gd::String &actualValue_ = "",
-                        const gd::String &objectName_ = "")
-      : type(type_), message(message_), location(location_),
-        actualValue(actualValue_), objectName(objectName_){};
-  ExpressionParserError(gd::ExpressionParserError::ErrorType type_,
-                        const gd::String &message_, size_t position_)
+                        const ExpressionParserLocation &location_)
+      : type(type_), message(message_), location(location_){};
+  ExpressionParserError(const gd::String &type_,
+                        const gd::String &message_,
+                        size_t position_)
      : type(type_), message(message_), location(position_){};
-  ExpressionParserError(gd::ExpressionParserError::ErrorType type_,
-                        const gd::String &message_, size_t startPosition_,
+  ExpressionParserError(const gd::String &type_,
+                        const gd::String &message_,
+                        size_t startPosition_,
                        size_t endPosition_)
-      : type(type_), message(message_),
+      : type(type_),
+        message(message_),
        location(startPosition_, endPosition_){};
  virtual ~ExpressionParserError(){};

-  gd::ExpressionParserError::ErrorType GetType() { return type; }
-  const gd::String &GetMessage() { return message; }
-  const gd::String &GetObjectName() { return objectName; }
-  const gd::String &GetActualValue() { return actualValue; }
-  size_t GetStartPosition() { return location.GetStartPosition(); }
-  size_t GetEndPosition() { return location.GetEndPosition(); }
+  bool IsError() override { return true; }
+  const gd::String &GetMessage() override { return message; }
+  size_t GetStartPosition() override { return location.GetStartPosition(); }
+  size_t GetEndPosition() override { return location.GetEndPosition(); }

-private:
-  gd::ExpressionParserError::ErrorType type;
+ private:
+  gd::String type;
  gd::String message;
  ExpressionParserLocation location;
-  gd::String objectName;
-  gd::String actualValue;
 };

 /**
@@ -102,7 +95,7 @@ struct GD_CORE_API ExpressionNode {
  virtual ~ExpressionNode(){};
  virtual void Visit(ExpressionParser2NodeWorker &worker){};

-  std::unique_ptr<ExpressionParserError> diagnostic;
+  std::unique_ptr<ExpressionParserDiagnostic> diagnostic;
  ExpressionParserLocation location;  ///< The location of the entire node. Some
                                      /// nodes might have other locations
                                      /// stored inside them. For example, a
@@ -432,3 +425,5 @@ struct GD_CORE_API EmptyNode : public FunctionCallOrObjectFunctionNameOrEmptyNod
 };

 }  // namespace gd
+
+#endif
--- a/Core/GDCore/Events/Serialization.cpp
+++ b/Core/GDCore/Events/Serialization.cpp
@@ -182,10 +182,10 @@ void EventsListSerialization::UpdateInstructionsFromGD2x(
    // Common updates for some parameters
    const std::vector<gd::Expression>& parameters = instr.GetParameters();
    for (std::size_t j = 0;
-         j < parameters.size() && j < metadata.parameters.GetParametersCount();
+         j < parameters.size() && j < metadata.parameters.size();
         ++j) {
-      if (metadata.parameters.GetParameter(j).GetType() == "relationalOperator" ||
-          metadata.parameters.GetParameter(j).GetType() == "operator") {
+      if (metadata.parameters[j].GetType() == "relationalOperator" ||
+          metadata.parameters[j].GetType() == "operator") {
        if (j == parameters.size() - 1) {
          std::cout << "ERROR: No more parameters after a [relational]operator "
                       "when trying to update an instruction from GD2.x";
@@ -221,8 +221,6 @@ void EventsListSerialization::UnserializeEventsFrom(

    event->SetDisabled(eventElem.GetBoolAttribute("disabled", false));
    event->SetFolded(eventElem.GetBoolAttribute("folded", false));
-    event->SetAiGeneratedEventId(
-        eventElem.GetStringAttribute("aiGeneratedEventId", ""));

    list.InsertEvent(event, list.GetEventsCount());
  }
@@ -238,8 +236,6 @@ void EventsListSerialization::SerializeEventsTo(const EventsList& list,
    if (event.IsDisabled())
      eventElem.SetAttribute("disabled", event.IsDisabled());
    if (event.IsFolded()) eventElem.SetAttribute("folded", event.IsFolded());
-    if (!event.GetAiGeneratedEventId().empty())
-      eventElem.SetAttribute("aiGeneratedEventId", event.GetAiGeneratedEventId());
    eventElem.AddChild("type").SetValue(event.GetType());

    event.SerializeTo(eventElem);
--- a/Core/GDCore/Extensions/Builtin/AdvancedExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/AdvancedExtension.cpp
@@ -66,7 +66,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAdvancedExtension(
      .SetRelevantForFunctionEventsOnly()
      .MarkAsAdvanced();

-  // Deprecated
  extension
      .AddAction("CopyArgumentToVariable",
                 _("Copy function parameter to variable"),
@@ -79,25 +78,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAdvancedExtension(
      .SetHelpPath("/events/functions/return")
      .AddParameter("functionParameterName", _("Parameter name"), "variable")
      .AddParameter("scenevar", _("Scene variable"))
-      .SetHidden()
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("CopyArgumentToVariable2",
-                 _("Copy function parameter to variable"),
-                 _("Copy a function parameter (also called \"argument\") to a variable. "
-                 "The parameter type must be a variable."),
-                 _("Copy the parameter _PARAM0_ into the variable _PARAM1_"),
-                 "",
-                 "res/function32.png",
-                 "res/function32.png")
-      .SetHelpPath("/events/functions/return")
-      .AddParameter("functionParameterName", _("Parameter name"), "variable")
-      .AddParameter("variable", _("Variable"))
      .SetRelevantForFunctionEventsOnly()
      .MarkAsAdvanced();

-  // Deprecated
  extension
      .AddAction("CopyVariableToArgument",
                 _("Copy variable to function parameter"),
@@ -110,21 +93,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAdvancedExtension(
      .SetHelpPath("/events/functions/return")
      .AddParameter("functionParameterName", _("Parameter name"), "variable")
      .AddParameter("scenevar", _("Scene variable"))
-      .SetHidden()
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("CopyVariableToArgument2",
-                 _("Copy variable to function parameter"),
-                 _("Copy a variable to function parameter (also called \"argument\"). "
-                 "The parameter type must be a variable."),
-                 _("Copy the variable _PARAM1_ into the parameter _PARAM0_"),
-                 "",
-                 "res/function32.png",
-                 "res/function32.png")
-      .SetHelpPath("/events/functions/return")
-      .AddParameter("functionParameterName", _("Parameter name"), "variable")
-      .AddParameter("variable", _("Variable"))
      .SetRelevantForFunctionEventsOnly()
      .MarkAsAdvanced();

@@ -141,8 +109,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAdvancedExtension(
                    "res/function32.png")
      .AddParameter("functionParameterName", _("Parameter name"), "number,string,boolean")
      .SetRelevantForFunctionEventsOnly()
-      .MarkAsAdvanced()
-      .SetHidden();
+      .MarkAsAdvanced();

  extension
      .AddExpression(
@@ -178,8 +145,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAdvancedExtension(
      .AddParameter("functionParameterName", _("Parameter name"), "number,string,boolean")
      .UseStandardRelationalOperatorParameters(
          "number", gd::ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .SetRelevantForFunctionEventsOnly();

  extension
      .AddCondition(
@@ -193,8 +159,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAdvancedExtension(
      .AddParameter("functionParameterName", _("Parameter name"), "number,string,boolean")
      .UseStandardRelationalOperatorParameters(
          "string", gd::ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .SetRelevantForFunctionEventsOnly();
 }

 }  // namespace gd
--- a/Core/GDCore/Extensions/Builtin/BaseObjectExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/BaseObjectExtension.cpp
@@ -37,8 +37,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .SetIcon("res/actions/position24_black.png");
  extension.AddInstructionOrExpressionGroupMetadata(_("Angle"))
      .SetIcon("res/actions/direction24_black.png");
-  extension.AddInstructionOrExpressionGroupMetadata(_("Size")).SetIcon(
-      "res/actions/scale24_black.png");
+  extension.AddInstructionOrExpressionGroupMetadata(_("Size"))
+      .SetIcon("res/actions/scale24_black.png");

  gd::ObjectMetadata& obj = extension.AddObject<gd::ObjectConfiguration>(
      "", _("Base object"), _("Base object"), "res/objeticon24.png");
@@ -117,7 +117,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Change the position of the center of _PARAM0_: _PARAM1_ "
                  "_PARAM2_ (x "
                  "axis), _PARAM3_ _PARAM4_ (y axis)"),
-                _("Position ❯ Center"),
+                _("Position/Center"),
                "res/actions/position24_black.png",
                "res/actions/position_black.png")
      .AddParameter("object", _("Object"))
@@ -133,7 +133,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Center X position"),
         _("the X position of the center of rotation"),
         _("the X position of the center"),
-         _("Position ❯ Center"),
+         _("Position/Center"),
         "res/actions/position24_black.png")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -144,7 +144,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Center Y position"),
         _("the Y position of the center of rotation"),
         _("the Y position of the center"),
-         _("Position ❯ Center"),
+         _("Position/Center"),
         "res/actions/position24_black.png")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -155,7 +155,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                                _("the bounding box (the area encapsulating "
                                  "the object) left position"),
                                _("the bounding box left position"),
-                                _("Position ❯ Bounding Box"),
+                                _("Position/Bounding Box"),
                                "res/conditions/bounding-box-left_black.svg")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -166,7 +166,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Bounding box top position"),
         _("the bounding box (the area encapsulating the object) top position"),
         _("the bounding box top position"),
-         _("Position ❯ Bounding Box"),
+         _("Position/Bounding Box"),
         "res/conditions/bounding-box-top_black.svg")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -177,7 +177,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                                _("the bounding box (the area encapsulating "
                                  "the object) right position"),
                                _("the bounding box right position"),
-                                _("Position ❯ Bounding Box"),
+                                _("Position/Bounding Box"),
                                "res/conditions/bounding-box-right_black.svg")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -188,7 +188,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                                _("the bounding box (the area encapsulating "
                                  "the object) bottom position"),
                                _("the bounding box bottom position"),
-                                _("Position ❯ Bounding Box"),
+                                _("Position/Bounding Box"),
                                "res/conditions/bounding-box-bottom_black.svg")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -199,7 +199,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                                _("the bounding box (the area encapsulating "
                                  "the object) center X position"),
                                _("the bounding box center X position"),
-                                _("Position ❯ Bounding Box"),
+                                _("Position/Bounding Box"),
                                "res/conditions/bounding-box-center_black.svg")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -210,7 +210,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                                _("the bounding box (the area encapsulating "
                                  "the object) center Y position"),
                                _("the bounding box center Y position"),
-                                _("Position ❯ Bounding Box"),
+                                _("Position/Bounding Box"),
                                "res/conditions/bounding-box-center_black.svg")
      .AddParameter("object", _("Object"))
      .UseStandardParameters("number", ParameterOptions::MakeNewOptions());
@@ -235,8 +235,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(

  obj.AddAction("SetAngle",
                _("Angle"),
-                _("Change the angle of rotation of an object (in degrees). For "
-                  "3D objects, this is the rotation around the Z axis."),
+                _("Change the angle of rotation of an object (in degrees)."),
                _("the angle"),
                _("Angle"),
                "res/actions/direction24_black.png",
@@ -251,12 +250,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
  obj.AddAction("Rotate",
                _("Rotate"),
                _("Rotate an object, clockwise if the speed is positive, "
-                  "counterclockwise otherwise. For 3D objects, this is the "
-                  "rotation around the Z axis."),
+                  "counterclockwise otherwise."),
                _("Rotate _PARAM0_ at speed _PARAM1_ deg/second"),
                _("Angle"),
                "res/actions/rotate24_black.png",
                "res/actions/rotate_black.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("Angular speed (in degrees per second)"))
      .AddCodeOnlyParameter("currentScene", "")
@@ -270,6 +269,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Angle"),
         "res/actions/rotate24_black.png",
         "res/actions/rotate_black.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("Angle to rotate towards (in degrees)"))
      .AddParameter("expression", _("Angular speed (in degrees per second)"))
@@ -285,6 +285,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Angle"),
         "res/actions/rotate24_black.png",
         "res/actions/rotate_black.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("X position"))
      .AddParameter("expression", _("Y position"))
@@ -303,12 +304,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Movement using forces"),
         "res/actions/force24.png",
         "res/actions/force.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("Speed on X axis (in pixels per second)"))
      .AddParameter("expression", _("Speed on Y axis (in pixels per second)"))
      .AddParameter("forceMultiplier", _("Force multiplier"), "", true)
-      .SetDefaultValue("0")
-      .SetHelpPath("/tutorials/how-to-move-objects/");
+      .SetDefaultValue("0");

  obj.AddAction("AddForceAL",
                _("Add a force (angle)"),
@@ -320,12 +321,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Movement using forces"),
                "res/actions/force24.png",
                "res/actions/force.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("Angle"))
      .AddParameter("expression", _("Speed (in pixels per second)"))
      .AddParameter("forceMultiplier", _("Force multiplier"), "", true)
      .SetDefaultValue("0")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddAction(
@@ -338,13 +339,13 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Movement using forces"),
         "res/actions/force24.png",
         "res/actions/force.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("X position"))
      .AddParameter("expression", _("Y position"))
      .AddParameter("expression", _("Speed (in pixels per second)"))
      .AddParameter("forceMultiplier", _("Force multiplier"), "", true)
      .SetDefaultValue("0")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddAction(
@@ -359,13 +360,13 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Movement using forces"),
         "res/actions/forceTourne24.png",
         "res/actions/forceTourne.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("expression", "X position of the center")
      .AddParameter("expression", "Y position of the center")
      .AddParameter("expression", "Speed (in Degrees per seconds)")
      .AddParameter("expression", "Distance (in pixels)")
      .AddParameter("forceMultiplier", "Force multiplier")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .SetHidden();

  obj.AddAction("Arreter",
@@ -375,8 +376,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Movement using forces"),
                "res/actions/arreter24.png",
                "res/actions/arreter.png")
+
      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddAction("Delete",
@@ -416,99 +417,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .SetDefaultValue("\"\"")
      .MarkAsAdvanced();

-  obj.AddAction("SetNumberObjectVariable",
-                _("Change object variable value"),
-                _("Modify the number value of an object variable."),
-                _("the variable _PARAM1_"),
-                _("Variables"),
-                "res/actions/var24.png",
-                "res/actions/var.png")
-
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .UseStandardOperatorParameters("number",
-                                     ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddAction("SetStringObjectVariable",
-                _("Change object variable value"),
-                _("Modify the text of an object variable."),
-                _("the variable _PARAM1_"),
-                _("Variables"),
-                "res/actions/var24.png",
-                "res/actions/var.png")
-
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .UseStandardOperatorParameters("string",
-                                     ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddAction("SetBooleanObjectVariable",
-                _("Change object variable value"),
-                _("Modify the boolean value of an object variable."),
-                _("Change the variable _PARAM1_ of _PARAM0_: _PARAM2_"),
-                _("Variables"),
-                "res/actions/var24.png",
-                "res/actions/var.png")
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .AddParameter("operator", _("Value"), "boolean")
-      // This parameter allows to keep the operand expression
-      // when the editor switch between variable instructions.
-      .AddCodeOnlyParameter("yesorno", _("Value"))
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddCondition("NumberObjectVariable",
-                   _("Object variable value"),
-                   _("Compare the number value of an object variable."),
-                   _("the variable _PARAM1_"),
-                   _("Variables"),
-                   "res/conditions/var24.png",
-                   "res/conditions/var.png")
-
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .UseStandardRelationalOperatorParameters(
-          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddCondition("StringObjectVariable",
-                   _("Object variable value"),
-                   _("Compare the text of an object variable."),
-                   _("the variable _PARAM1_"),
-                   _("Variables"),
-                   "res/conditions/var24.png",
-                   "res/conditions/var.png")
-
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .UseStandardRelationalOperatorParameters(
-          "string", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddCondition("BooleanObjectVariable",
-                   _("Object variable value"),
-                   _("Compare the boolean value of an object variable."),
-                   _("The variable _PARAM1_ of _PARAM0_ is _PARAM2_"),
-                   _("Variables"),
-                   "res/conditions/var24.png",
-                   "res/conditions/var.png")
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .AddParameter("trueorfalse", _("Check if the value is"))
-      .SetDefaultValue("true")
-      // This parameter allows to keep the operand expression
-      // when the editor switch between variable instructions.
-      .AddCodeOnlyParameter("yesorno", _("Value"))
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForLayoutEventsOnly();
-
  obj.AddAction("ModVarObjet",
                _("Change number variable"),
                _("Modify the number value of an object variable."),
@@ -519,10 +427,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(

      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
-      .SetHelpPath("/all-features/variables/object-variables/")
      .UseStandardOperatorParameters("number",
-                                     ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly();
+                                     ParameterOptions::MakeNewOptions());

  obj.AddAction("ModVarObjetTxt",
                _("Change text variable"),
@@ -534,10 +440,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(

      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
-      .SetHelpPath("/all-features/variables/object-variables/")
      .UseStandardOperatorParameters("string",
-                                     ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly();
+                                     ParameterOptions::MakeNewOptions());

  obj.AddAction("SetObjectVariableAsBoolean",
                _("Change boolean variable"),
@@ -550,9 +454,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(

      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
-      .AddParameter("trueorfalse", _("New Value:"))
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForFunctionEventsOnly();
+      .AddParameter("trueorfalse", _("New Value:"));

  obj.AddAction(
         "ToggleObjectVariableAsBoolean",
@@ -567,35 +469,31 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         "res/actions/var.png")

      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForFunctionEventsOnly();
+      .AddParameter("objectvar", _("Variable"));

  obj.AddCondition("ObjectVariableChildExists",
                   _("Child existence"),
                   _("Check if the specified child of the object "
                     "structure variable exists."),
                   _("Child _PARAM2_ of variable _PARAM1_ of _PARAM0_ exists"),
-                   _("Variables ❯ Arrays and structures"),
+                   _("Variables/Arrays and structures"),
                   "res/conditions/var24.png",
                   "res/conditions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Structure variable"))
      .AddParameter("string", _("Name of the child"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
      .MarkAsAdvanced();

  obj.AddAction("ObjectVariableRemoveChild",
                _("Remove a child"),
                _("Remove a child from an object structure variable."),
                _("Remove child _PARAM2_ from variable _PARAM1_ of _PARAM0_"),
-                _("Variables ❯ Arrays and structures"),
+                _("Variables/Arrays and structures"),
                "res/actions/var24.png",
                "res/actions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Structure variable"))
      .AddParameter("string", _("Child's name"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
      .MarkAsAdvanced();

  obj.AddAction("ObjectVariableClearChildren",
@@ -603,12 +501,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Remove all the children from the object array or structure "
                  "variable."),
                _("Clear children from variable _PARAM1_ of _PARAM0_"),
-                _("Variables ❯ Arrays and structures"),
+                _("Variables/Arrays and structures"),
                "res/actions/var24.png",
                "res/actions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Array or structure variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
      .MarkAsAdvanced();

  obj.AddAction("Cache",
@@ -636,8 +533,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(

  obj.AddCondition("Angle",
                   _("Angle"),
-                   _("Compare the angle, in degrees, of the specified object. "
-                     "For 3D objects, this is the angle around the Z axis."),
+                   _("Compare the angle of the specified object."),
                   _("the angle (in degrees)"),
                   _("Angle"),
                   "res/conditions/direction24_black.png",
@@ -704,8 +600,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                   _("Movement using forces"),
                   "res/conditions/arret24.png",
                   "res/conditions/arret.png")
+
      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddCondition("Vitesse",
@@ -715,10 +611,10 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                   _("Movement using forces"),
                   "res/conditions/vitesse24.png",
                   "res/conditions/vitesse.png")
+
      .AddParameter("object", _("Object"))
      .UseStandardRelationalOperatorParameters(
          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  // Deprecated
@@ -735,7 +631,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("Angle, in degrees"))
      .AddParameter("expression", _("Tolerance, in degrees"))
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddCondition("IsTotalForceAngleAround",
@@ -749,7 +644,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("Angle, in degrees"))
      .AddParameter("expression", _("Tolerance, in degrees"))
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddCondition("VarObjet",
@@ -763,9 +657,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
-          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForFunctionEventsOnly();
+          "number", ParameterOptions::MakeNewOptions());

  obj.AddCondition("VarObjetTxt",
                   _("Text variable"),
@@ -778,9 +670,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
-          "string", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForFunctionEventsOnly();
+          "string", ParameterOptions::MakeNewOptions());

  obj.AddCondition("ObjectVariableAsBoolean",
                   _("Boolean variable"),
@@ -793,9 +683,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
      .AddParameter("trueorfalse", _("Check if the value is"))
-      .SetDefaultValue("true")
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForFunctionEventsOnly();
+      .SetDefaultValue("true");

  obj.AddCondition("VarObjetDef",
                   "Variable defined",
@@ -809,56 +697,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("string", _("Variable"))
      .SetHidden();  // Deprecated.

-  obj.AddAction(
-         "PushStringToObjectVariable",
-         _("Add value to object array variable"),
-         _("Adds a text (string) to the end of an object array variable."),
-         _("Add value _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-         _("Variables ❯ Arrays and structures"),
-         "res/actions/var24.png",
-         "res/actions/var.png")
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .AddParameter("string", _("Text to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddAction("PushNumberToObjectVariable",
-                _("Add value to object array variable"),
-                _("Adds a number to the end of an object array variable."),
-                _("Add value _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-                _("Variables ❯ Arrays and structures"),
-                "res/actions/var24.png",
-                "res/actions/var.png")
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .AddParameter("expression", _("Number to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForLayoutEventsOnly();
-
-  obj.AddAction("PushBooleanToObjectVariable",
-                _("Add value to object array variable"),
-                _("Adds a boolean to the end of an object array variable."),
-                _("Add value _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-                _("Variables ❯ Arrays and structures"),
-                "res/actions/var24.png",
-                "res/actions/var.png")
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .AddParameter("trueorfalse", _("Boolean to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForLayoutEventsOnly();
-
-  // Deprecated
  obj.AddAction(
         "ObjectVariablePush",
         _("Add existing variable"),
         _("Adds an existing variable to the end of an object array variable."),
         _("Add variable _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var24.png",
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
@@ -867,25 +711,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .SetParameterLongDescription(_("The content of the object variable will "
                                     "*be copied* and added at the "
                                     "end of the array."))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetHidden();
-
-  obj.AddAction(
-         "ObjectVariablePush2",
-         _("Add existing variable"),
-         _("Adds an existing variable to the end of an object array variable."),
-         _("Add variable _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-         _("Variables ❯ Arrays and structures"),
-         "res/actions/var24.png",
-         "res/actions/var.png")
-      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .AddParameter("variable", _("Scene variable with the content to add"))
-      .SetParameterLongDescription(_("The content of the object variable will "
-                                     "*be copied* and added at the "
-                                     "end of the array."))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
      .MarkAsAdvanced();

  obj.AddAction(
@@ -893,44 +718,38 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Add text variable"),
         _("Adds a text (string) to the end of an object array variable."),
         _("Add text _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var24.png",
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Array variable"))
      .AddParameter("string", _("Text to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForFunctionEventsOnly();
+      .MarkAsAdvanced();

  obj.AddAction("ObjectVariablePushNumber",
                _("Add number variable"),
                _("Adds a number to the end of an object array variable."),
                _("Add number _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-                _("Variables ❯ Arrays and structures"),
+                _("Variables/Arrays and structures"),
                "res/actions/var24.png",
                "res/actions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Array variable"))
      .AddParameter("expression", _("Number to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForFunctionEventsOnly();
+      .MarkAsAdvanced();

  obj.AddAction(
         "ObjectVariablePushBool",
         _("Add boolean variable"),
         _("Adds a boolean to the end of an object array variable."),
         _("Add boolean _PARAM2_ to array variable _PARAM1_ of _PARAM0_"),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var24.png",
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Array variable"))
      .AddParameter("trueorfalse", _("Boolean to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForFunctionEventsOnly();
+      .MarkAsAdvanced();

  obj.AddAction(
         "ObjectVariableRemoveAt",
@@ -939,13 +758,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
           "variable."),
         _("Remove variable at index _PARAM2_ from array variable _PARAM1_ of "
           "_PARAM0_"),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var24.png",
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Array variable"))
      .AddParameter("expression", _("Index to remove"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
      .MarkAsAdvanced();

  obj.AddCondition(
@@ -953,14 +771,13 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Number of children"),
         _("Compare the number of children in an object array variable."),
         _("The number of children in the array variable _PARAM1_"),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/conditions/var24.png",
         "res/conditions/var.png")
      .AddParameter("object", _("Object"))
      .AddParameter("objectvar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
      .MarkAsAdvanced();

  obj.AddStrExpression(
@@ -968,44 +785,40 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("First text child"),
         _("Get the value of the first element of an object array variable, if "
           "it is a text (string) variable."),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
+      .AddParameter("objectvar", _("Array variable"));

  obj.AddExpression(
         "ArrayVariableFirstNumber",
         _("First number child"),
         _("Get the value of the first element of an object array variable, if "
           "it is a number variable."),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
+      .AddParameter("objectvar", _("Array variable"));

  obj.AddStrExpression(
         "ArrayVariableLastString",
         _("Last text child"),
         _("Get the value of the last element of an object array variable, if "
           "it is a text (string) variable."),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
+      .AddParameter("objectvar", _("Array variable"));

  obj.AddExpression(
         "ArrayVariableLastNumber",
         _("Last number child"),
         _("Get the value of the last element of an object array variable, if "
           "it is a number variable."),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
+      .AddParameter("objectvar", _("Array variable"));

  obj.AddCondition("BehaviorActivated",
                   _("Behavior activated"),
@@ -1040,12 +853,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Movement using forces"),
                "res/actions/forceVers24.png",
                "res/actions/forceVers.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("objectPtr", _("Target Object"))
      .AddParameter("expression", _("Speed (in pixels per second)"))
      .AddParameter("forceMultiplier", _("Force multiplier"), "", true)
      .SetDefaultValue("0")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddAction(
@@ -1060,13 +873,13 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         _("Movement using forces"),
         "res/actions/forceTourne24.png",
         "res/actions/forceTourne.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("objectPtr", _("Rotate around this object"))
      .AddParameter("expression", _("Speed (in degrees per second)"))
      .AddParameter("expression", _("Distance (in pixels)"))
      .AddParameter("forceMultiplier", _("Force multiplier"), "", true)
      .SetDefaultValue("0")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  obj.AddAction("MettreAutour",
@@ -1094,10 +907,10 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Movement using forces"),
                "res/actions/ecarter24.png",
                "res/actions/ecarter.png")
+
      .SetHidden()
      .AddParameter("object", _("Object"))
-      .AddParameter("objectList", "Object 2 (won't move)")
-      .SetHelpPath("/tutorials/how-to-move-objects/");
+      .AddParameter("objectList", "Object 2 (won't move)");

  // Deprecated action
  obj.AddAction("Ecarter",
@@ -1121,6 +934,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                _("Position"),
                "res/actions/ecarter24.png",
                "res/actions/ecarter.png")
+
      .AddParameter("object", _("Object"))
      .AddParameter("objectList", _("Objects (won't move)"))
      .AddParameter("yesorno",
@@ -1129,7 +943,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                    "",
                    true)
      .SetDefaultValue("no")
-      .SetHelpPath("/all-features/collisions/")
      .MarkAsSimple();

  obj.AddCondition("CollisionPoint",
@@ -1142,7 +955,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("expression", _("X position of the point"))
      .AddParameter("expression", _("Y position of the point"))
-      .SetHelpPath("/all-features/collisions/")
      .MarkAsSimple();

  extension
@@ -1174,7 +986,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("object", _("Object"))
      .AddParameter("identifier", _("Timer's name"), "objectTimer")
      .AddParameter("expression", _("Time in seconds"))
-      .SetHelpPath("/all-features/timers-and-time/")
      .SetHidden();

  obj.AddCondition(
@@ -1190,7 +1001,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("identifier", _("Timer's name"), "objectTimer")
      .AddParameter("relationalOperator", _("Sign of the test"), "time")
      .AddParameter("expression", _("Time in seconds"))
-      .SetHelpPath("/all-features/timers-and-time/")
      .SetManipulatedType("number");

  obj.AddCondition("ObjectTimerPaused",
@@ -1202,7 +1012,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                   "res/conditions/timerPaused.png")
      .AddParameter("object", _("Object"))
      .AddParameter("identifier", _("Timer's name"), "objectTimer")
-      .SetHelpPath("/all-features/timers-and-time/")
      .MarkAsAdvanced();

  obj.AddAction(
@@ -1215,8 +1024,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
         "res/actions/timer24.png",
         "res/actions/timer.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("identifier", _("Timer's name"), "objectTimer")
-      .SetHelpPath("/all-features/timers-and-time/");
+      .AddParameter("identifier", _("Timer's name"), "objectTimer");

  obj.AddAction("PauseObjectTimer",
                _("Pause an object timer"),
@@ -1227,7 +1035,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                "res/actions/pauseTimer.png")
      .AddParameter("object", _("Object"))
      .AddParameter("identifier", _("Timer's name"), "objectTimer")
-      .SetHelpPath("/all-features/timers-and-time/")
      .MarkAsAdvanced();

  obj.AddAction("UnPauseObjectTimer",
@@ -1239,7 +1046,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                "res/actions/unPauseTimer.png")
      .AddParameter("object", _("Object"))
      .AddParameter("identifier", _("Timer's name"), "objectTimer")
-      .SetHelpPath("/all-features/timers-and-time/")
      .MarkAsAdvanced();

  obj.AddAction("RemoveObjectTimer",
@@ -1251,7 +1057,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                "res/actions/timer.png")
      .AddParameter("object", _("Object"))
      .AddParameter("identifier", _("Timer's name"), "objectTimer")
-      .SetHelpPath("/all-features/timers-and-time/")
      .MarkAsAdvanced();

  obj.AddExpression("X",
@@ -1270,8 +1075,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(

  obj.AddExpression("Angle",
                    _("Angle"),
-                    _("Current angle, in degrees, of the object. For 3D "
-                      "objects, this is the angle around the Z axis."),
+                    _("Current angle, in degrees, of the object"),
                    _("Angle"),
                    "res/actions/direction_black.png")
      .AddParameter("object", _("Object"));
@@ -1281,32 +1085,28 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                    _("X coordinate of the sum of forces"),
                    _("Movement using forces"),
                    "res/actions/force.png")
-      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/");
+      .AddParameter("object", _("Object"));

  obj.AddExpression("ForceY",
                    _("Y coordinate of the sum of forces"),
                    _("Y coordinate of the sum of forces"),
                    _("Movement using forces"),
                    "res/actions/force.png")
-      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/");
+      .AddParameter("object", _("Object"));

  obj.AddExpression("ForceAngle",
                    _("Angle of the sum of forces"),
                    _("Angle of the sum of forces (in degrees)"),
                    _("Movement using forces"),
                    "res/actions/force.png")
-      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/");
+      .AddParameter("object", _("Object"));

  obj.AddExpression("ForceLength",
                    _("Length of the sum of forces"),
                    _("Length of the sum of forces"),
                    _("Movement using forces"),
                    "res/actions/force.png")
-      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/");
+      .AddParameter("object", _("Object"));

  obj.AddExpression("Longueur",
                    _("Length of the sum of forces"),
@@ -1314,7 +1114,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                    _("Movement using forces"),
                    "res/actions/force.png")
      .AddParameter("object", _("Object"))
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .SetHidden();

  obj.AddExpression("Width",
@@ -1404,18 +1203,16 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                    _("Variables"),
                    "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .SetRelevantForFunctionEventsOnly();
+      .AddParameter("objectvar", _("Variable"));

  obj.AddExpression(
         "VariableChildCount",
         _("Number of children"),
         _("Number of children in an object array or structure variable"),
-         _("Variables ❯ Arrays and structures"),
+         _("Variables/Arrays and structures"),
         "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Array or structure variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
+      .AddParameter("objectvar", _("Array or structure variable"));

  obj.AddStrExpression("VariableString",
                       _("Text variable"),
@@ -1423,9 +1220,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                       _("Variables"),
                       "res/actions/var.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("objectvar", _("Variable"))
-      .SetHelpPath("/all-features/variables/object-variables/")
-      .SetRelevantForFunctionEventsOnly();
+      .AddParameter("objectvar", _("Variable"));

  obj.AddExpression("ObjectTimerElapsedTime",
                    _("Object timer value"),
@@ -1433,8 +1228,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                    _("Timers"),
                    "res/actions/time.png")
      .AddParameter("object", _("Object"))
-      .AddParameter("identifier", _("Timer's name"), "objectTimer")
-      .SetHelpPath("/all-features/timers-and-time/");
+      .AddParameter("identifier", _("Timer's name"), "objectTimer");

  obj.AddExpression("AngleToObject",
                    _("Angle between two objects"),
@@ -1574,9 +1368,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
  extension
      .AddAction("Create",
                 _("Create an object"),
-                 _("Create an instance of the object at the specified position."
-                   "The created object instance will be available for the next "
-                   "actions and sub-events."),
+                 _("Create an object at specified position"),
                 _("Create object _PARAM1_ at position _PARAM2_;_PARAM3_ "
                   "(layer: _PARAM4_)"),
                 "",
@@ -1656,7 +1448,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
          "res/actions/doMove24.png",
          "res/actions/doMove.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  extension
@@ -1672,7 +1463,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("objectList", _("Object 2"))
      .AddParameter("expression", _("Tolerance, in degrees"))
      .AddCodeOnlyParameter("conditionInverted", "")
-      .SetHelpPath("/tutorials/how-to-move-objects/")
      .MarkAsAdvanced();

  extension
@@ -1805,7 +1595,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
                    "",
                    true)
      .SetDefaultValue("no")
-      .SetHelpPath("/all-features/collisions/")
      .MarkAsSimple();

  extension
@@ -1821,22 +1610,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
      .AddParameter("expression",
                    _("Angle of tolerance, in degrees (0: minimum tolerance)"))
      .AddCodeOnlyParameter("conditionInverted", "")
-      .SetHidden()
-      .MarkAsAdvanced();
-
-  extension
-      .AddCondition("IsTurnedTowardObject",
-                    _("An object is turned toward another"),
-                    _("Check if an object is turned toward another"),
-                    _("_PARAM0_ is turned toward _PARAM1_ ± _PARAM2_°"),
-                    _("Angle"),
-                    "res/conditions/estTourne24.png",
-                    "res/conditions/estTourne.png")
-      .AddParameter("objectList", _("Name of the object"))
-      .AddParameter("objectList", _("Name of the second object"))
-      .AddParameter("expression",
-                    _("Angle of tolerance, in degrees (0: minimum tolerance)"))
-      .AddCodeOnlyParameter("conditionInverted", "")
      .MarkAsAdvanced();

  extension
@@ -1868,7 +1641,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
          _("Scene variable where to store the Y position of the intersection. "
            "If no intersection is found, the variable won't be changed."))
      .AddCodeOnlyParameter("conditionInverted", "")
-      .SetHelpPath("/all-features/collisions/")
      .MarkAsAdvanced();

  extension
@@ -1900,7 +1672,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
          _("Scene variable where to store the Y position of the intersection. "
            "If no intersection is found, the variable won't be changed."))
      .AddCodeOnlyParameter("conditionInverted", "")
-      .SetHelpPath("/all-features/collisions/")
      .MarkAsAdvanced();

  extension
--- a/Core/GDCore/Extensions/Builtin/CameraExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/CameraExtension.cpp
@@ -327,25 +327,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsCameraExtension(
      .AddParameter("expression", _("Camera number (default : 0)"), "", true)
      .SetDefaultValue("0");

-  extension
-      .AddCondition(
-          "CameraZoom",
-          _("Camera zoom"),
-          _("Compare the zoom of a camera of a layer."),
-          _("Zoom of camera _PARAM2_ of layer _PARAM1_"),
-          "",
-          "res/conditions/camera24.png",
-          "res/conditions/camera.png")
-      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("layer", _("Layer"), "", true)
-      .SetDefaultValue("\"\"")
-      .AddParameter("expression", _("Camera number (default : 0)"), "", true)
-      .SetDefaultValue("0")
-      .UseStandardRelationalOperatorParameters(
-          "number", gd::ParameterOptions::MakeNewOptions().SetDescription(
-              _("Zoom")))
-      .MarkAsAdvanced();
-
  extension
      .AddAction(
          "FixCamera",
--- a/Core/GDCore/Extensions/Builtin/Capabilities/TextContainerExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/Capabilities/TextContainerExtension.cpp
@@ -19,7 +19,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTextContainerExtension(
  extension
      .SetExtensionInformation("TextContainerCapability",
                               _("Text capability"),
-                               _("Allows an object to contain a text, usually shown on screen, that can be modified."),
+                               _("Animate objects."),
                               "Florian Rival",
                               "Open source (MIT License)")
      .SetExtensionHelpPath("/objects");
@@ -30,7 +30,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTextContainerExtension(
      "TextContainerBehavior",
      _("Text capability"),
      "Text",
-      _("Allows an object to contain a text, usually shown on screen, that can be modified."),
+      _("Access objects text."),
      "",
      "res/conditions/text24_black.png",
      "TextContainerBehavior",
--- a/Core/GDCore/Extensions/Builtin/CommonConversionsExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/CommonConversionsExtension.cpp
@@ -68,22 +68,19 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(

  extension
      .AddStrExpression("ToJSON",
-                        _("Convert variable to JSON"),
-                        _("Convert a variable to JSON"),
+                        _("Convert scene variable to JSON"),
+                        _("Convert a scene variable to JSON"),
                        _("JSON"),
                        "res/conditions/toujours24_black.png")
-      .AddParameter("variable", _("The variable to be stringified"),
-                    "AllowUndeclaredVariable");
+      .AddParameter("scenevar", _("Scene variable to be stringified"));

-  // Deprecated
  extension
      .AddStrExpression("GlobalVarToJSON",
                        _("Convert global variable to JSON"),
                        _("Convert a global variable to JSON"),
                        _("JSON"),
                        "res/conditions/toujours24_black.png")
-      .AddParameter("globalvar", _("The global variable to be stringified"))
-      .SetHidden();
+      .AddParameter("globalvar", _("The global variable to be stringified"));

  extension
      .AddStrExpression("ObjectVarToJSON",
@@ -94,7 +91,6 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(
      .AddParameter("objectPtr", _("The object with the variable"))
      .AddParameter("objectvar", _("The object variable to be stringified"));

-  // Deprecated
  extension
      .AddAction(
          "JSONToVariableStructure",
@@ -106,10 +102,8 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(
          "res/actions/net.png")
      .AddParameter("string", _("JSON string"))
      .AddParameter("scenevar", _("Variable where store the JSON object"))
-      .MarkAsAdvanced()
-      .SetHidden();
+      .MarkAsAdvanced();

-  // Deprecated
  extension
      .AddAction("JSONToGlobalVariableStructure",
                 _("Convert JSON to global variable"),
@@ -122,20 +116,6 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(
      .AddParameter("string", _("JSON string"))
      .AddParameter("globalvar",
                    _("Global variable where store the JSON object"))
-      .MarkAsAdvanced()
-      .SetHidden();
-
-  extension
-      .AddAction(
-          "JSONToVariableStructure2",
-          _("Convert JSON to a variable"),
-          _("Parse a JSON object and store it into a variable"),
-          _("Convert JSON string _PARAM0_ and store it into variable _PARAM1_"),
-          "",
-          "res/actions/net24.png",
-          "res/actions/net.png")
-      .AddParameter("string", _("JSON string"))
-      .AddParameter("variable", _("Variable where to store the JSON object"))
      .MarkAsAdvanced();

  extension
--- a/Core/GDCore/Extensions/Builtin/CommonInstructionsExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/CommonInstructionsExtension.cpp
@@ -59,57 +59,47 @@ BuiltinExtensionsImplementer::ImplementsCommonInstructionsExtension(
  // end of compatibility code

  extension
-      .AddCondition(
-          "Or",
-          _("Or"),
-          _("Checks if at least one sub-condition is true. If no "
-            "sub-condition is specified, it will always be false. "
-            "This is rarely used — multiple events and sub-events are "
-            "usually a better approach."),
-          _("If one of these conditions is true:"),
-          "",
-          "res/conditions/or24_black.png",
-          "res/conditions/or_black.png")
+      .AddCondition("Or",
+                    _("Or"),
+                    _("Check if one of the sub conditions is true"),
+                    _("If one of these conditions is true:"),
+                    "",
+                    "res/conditions/or24_black.png",
+                    "res/conditions/or_black.png")
+      .SetCanHaveSubInstructions()
+      .MarkAsAdvanced();
+
+  extension
+      .AddCondition("And",
+                    _("And"),
+                    _("Check if all sub conditions are true"),
+                    _("If all of these conditions are true:"),
+                    "",
+                    "res/conditions/and24_black.png",
+                    "res/conditions/and_black.png")
      .SetCanHaveSubInstructions()
      .MarkAsAdvanced();

  extension
      .AddCondition(
-          "And",
-          _("And"),
-          _("Checks if all sub-conditions are true. If no sub-condition is "
-            "specified, it will always be false. This is rarely needed, as "
-            "events already check all conditions before running actions."),
-          _("If all of these conditions are true:"),
+          "Not",
+          _("Not"),
+          _("Return the contrary of the result of the sub conditions"),
+          _("Invert the logical result of these conditions:"),
          "",
-          "res/conditions/and24_black.png",
-          "res/conditions/and_black.png")
+          "res/conditions/not24_black.png",
+          "res/conditions/not_black.png")
      .SetCanHaveSubInstructions()
      .MarkAsAdvanced();

-  extension
-      .AddCondition("Not",
-                    _("Not"),
-                    _("Returns the opposite of the sub-condition(s) result. "
-                      "This is rarely needed, as most conditions can be "
-                      "inverted or expressed more simply."),
-                    _("Invert the logical result of these conditions:"),
-                    "",
-                    "res/conditions/not24_black.png",
-                    "res/conditions/not_black.png")
-      .SetCanHaveSubInstructions()
-      .MarkAsAdvanced();
-
-  extension
-      .AddCondition("Once",
-                    _("Trigger once while true"),
-                    _("Run actions only once, for each time the conditions "
-                      "have been met."),
-                    _("Trigger once"),
-                    "",
-                    "res/conditions/once24.png",
-                    "res/conditions/once.png")
-      .SetHelpPath("/all-features/advanced-conditions/trigger-once");
+  extension.AddCondition(
+      "Once",
+      _("Trigger once while true"),
+      _("Run actions only once, for each time the conditions have been met."),
+      _("Trigger once"),
+      "",
+      "res/conditions/once24.png",
+      "res/conditions/once.png");

  extension
      .AddCondition("CompareNumbers",
--- a/Core/GDCore/Extensions/Builtin/ExternalLayoutsExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/ExternalLayoutsExtension.cpp
@@ -28,7 +28,7 @@ BuiltinExtensionsImplementer::ImplementsExternalLayoutsExtension(
      .AddAction("CreateObjectsFromExternalLayout",
                 _("Create objects from an external layout"),
                 _("Create objects from an external layout."),
-                 _("Create objects from the external layout named _PARAM1_ at position _PARAM2_;_PARAM3_;_PARAM4_"),
+                 _("Create objects from the external layout named _PARAM1_"),
                 "",
                 "res/ribbon_default/externallayout32.png",
                 "res/ribbon_default/externallayout32.png")
--- a/Core/GDCore/Extensions/Builtin/FileExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/FileExtension.cpp
@@ -98,7 +98,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFileExtension(
      .AddParameter("string", _("Group"))
      .AddParameter("string", _("Text"));

-  // Deprecated
  extension
      .AddAction(
          "LireFichierExp",
@@ -115,27 +114,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFileExtension(
      .AddParameter("string", _("Storage name"))
      .AddParameter("string", _("Group"))
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("scenevar", _("Scene variable"))
-      .SetHidden();
+      .AddParameter("scenevar", _("Scene variables"));

-  extension
-      .AddAction(
-          "ReadNumberFromStorage",
-          _("Load a value"),
-          _("Load the value saved in the specified element and store it in a "
-            "variable.\nSpecify the structure leading to the element using / "
-            "(example : Root/Level/Current)\nSpaces are forbidden in element "
-            "names."),
-          _("Load _PARAM1_ from storage _PARAM0_ and store value in _PARAM3_"),
-          "",
-          "res/actions/fichier24.png",
-          "res/actions/fichier.png")
-      .AddParameter("string", _("Storage name"))
-      .AddParameter("string", _("Group"))
-      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("variable", _("Variable"));
-
-  // Deprecated
  extension
      .AddAction(
          "LireFichierTxt",
@@ -153,26 +133,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFileExtension(
      .AddParameter("string", _("Storage name"))
      .AddParameter("string", _("Group"))
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("scenevar", _("Scene variable"))
-      .SetHidden();
-
-  extension
-      .AddAction(
-          "ReadStringFromStorage",
-          _("Load a text"),
-          _("Load the text saved in the specified element and store it in a "
-            "variable.\nSpecify the structure leading to the element using / "
-            "(example : Root/Level/Current)\nSpaces are forbidden in element "
-            "names."),
-          _("Load _PARAM1_ from storage _PARAM0_ and store as text in "
-            "_PARAM3_"),
-          "",
-          "res/actions/fichier24.png",
-          "res/actions/fichier.png")
-      .AddParameter("string", _("Storage name"))
-      .AddParameter("string", _("Group"))
-      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("variable", _("Variable"));
+      .AddParameter("scenevar", _("Scene variables"));

  extension
      .AddAction("DeleteGroupFichier",
--- a/Core/GDCore/Extensions/Builtin/KeyboardExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/KeyboardExtension.cpp
@@ -35,8 +35,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsKeyboardExtension(
                    "res/conditions/keyboard24.png",
                    "res/conditions/keyboard.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("key", _("Key to check"))
-      .SetHidden();
+      .AddParameter("key", _("Key"));

  extension
      .AddCondition("KeyReleased",
@@ -47,32 +46,33 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsKeyboardExtension(
                    "res/conditions/keyboard24.png",
                    "res/conditions/keyboard.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("key", _("Key to check"))
-      .SetHidden();
+      .AddParameter("key", _("Key"));

  extension
      .AddCondition("KeyFromTextPressed",
-                    _("Key pressed"),
-                    _("Check if a key is pressed"),
+                    _("Key pressed (text expression)"),
+                    _("Check if a key, retrieved from the result of the "
+                      "expression, is pressed"),
                    _("_PARAM1_ key is pressed"),
                    "",
                    "res/conditions/keyboard24.png",
                    "res/conditions/keyboard.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("keyboardKey", _("Key to check"))
-      .MarkAsSimple();
+      .AddParameter("string", _("Expression generating the key to check"))
+      .MarkAsAdvanced();

  extension
      .AddCondition("KeyFromTextReleased",
-                    _("Key released"),
-                    _("Check if a key was just released"),
+                    _("Key released (text expression)"),
+                    _("Check if a key, retrieved from the result of the "
+                      "expression, was just released"),
                    _("_PARAM1_ key is released"),
                    "",
                    "res/conditions/keyboard24.png",
                    "res/conditions/keyboard.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("keyboardKey", _("Key to check"))
-      .MarkAsSimple();
+      .AddParameter("string", _("Expression generating the key to check"))
+      .MarkAsAdvanced();

  extension
      .AddCondition("AnyKeyPressed",
--- a/Core/GDCore/Extensions/Builtin/MathematicalToolsExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/MathematicalToolsExtension.cpp
@@ -72,8 +72,7 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(

  extension
      .AddExpression("normalize",
-                     _("Normalize a value between `min` and `max` to a value "
-                       "between 0 and 1."),
+                     _("Normalize a value between `min` and `max` to a value between 0 and 1."),
                     _("Remap a value between 0 and 1."),
                     "",
                     "res/mathfunction.png")
@@ -125,8 +124,7 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
  extension
      .AddExpression("mod",
                     _("Modulo"),
-                     _("Compute \"x mod y\". GDevelop does NOT support the \% "
-                       "operator. Use this mod(x, y) function instead."),
+                     _("x mod y"),
                     "",
                     "res/mathfunction.png")
      .AddParameter("expression", _("x (as in x mod y)"))
@@ -153,8 +151,7 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
  extension
      .AddExpression("abs",
                     _("Absolute value"),
-                     _("Return the non-negative value by removing the sign. "
-                       "The absolute value of -8 is 8."),
+                     _("Absolute value"),
                     "",
                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));
@@ -186,8 +183,11 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "asinh", _("Arcsine"), _("Arcsine"), "", "res/mathfunction.png")
+      .AddExpression("asinh",
+                     _("Arcsine"),
+                     _("Arcsine"),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -217,8 +217,11 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "cbrt", _("Cube root"), _("Cube root"), "", "res/mathfunction.png")
+      .AddExpression("cbrt",
+                     _("Cube root"),
+                     _("Cube root"),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -256,13 +259,12 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"), "", true);

  extension
-      .AddExpression(
-          "cos",
-          _("Cosine"),
-          _("Cosine of an angle (in radian). "
-            "If you want to use degrees, use`ToRad`: `sin(ToRad(45))`."),
-          "",
-          "res/mathfunction.png")
+      .AddExpression("cos",
+                     _("Cosine"),
+                     _("Cosine of an angle (in radian). "
+                       "If you want to use degrees, use`ToRad`: `sin(ToRad(45))`."),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -290,20 +292,29 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "int", _("Round"), _("Round a number"), "", "res/mathfunction.png")
+      .AddExpression("int",
+                     _("Round"),
+                     _("Round a number"),
+                     "",
+                     "res/mathfunction.png")
      .SetHidden()
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "rint", _("Round"), _("Round a number"), "", "res/mathfunction.png")
+      .AddExpression("rint",
+                     _("Round"),
+                     _("Round a number"),
+                     "",
+                     "res/mathfunction.png")
      .SetHidden()
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "round", _("Round"), _("Round a number"), "", "res/mathfunction.png")
+      .AddExpression("round",
+                     _("Round"),
+                     _("Round a number"),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -312,8 +323,8 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
                     _("Round a number to the Nth decimal place"),
                     "",
                     "res/mathfunction.png")
-      .AddParameter("expression", _("Number to Round"))
-      .AddParameter("expression", _("Decimal Places"), "", true);
+      .AddParameter("expression", _("Expression"))
+      .AddParameter("expression", _("Expression"), "", true);

  extension
      .AddExpression("exp",
@@ -324,13 +335,19 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "log", _("Logarithm"), _("Logarithm"), "", "res/mathfunction.png")
+      .AddExpression("log",
+                     _("Logarithm"),
+                     _("Logarithm"),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "ln", _("Logarithm"), _("Logarithm"), "", "res/mathfunction.png")
+      .AddExpression("ln",
+                     _("Logarithm"),
+                     _("Logarithm"),
+                     "",
+                     "res/mathfunction.png")
      .SetHidden()
      .AddParameter("expression", _("Expression"));

@@ -369,8 +386,11 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("The exponent (n in x^n)"));

  extension
-      .AddExpression(
-          "sec", _("Secant"), _("Secant"), "", "res/mathfunction.png")
+      .AddExpression("sec",
+                     _("Secant"),
+                     _("Secant"),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -382,13 +402,12 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "sin",
-          _("Sine"),
-          _("Sine of an angle (in radian). "
-            "If you want to use degrees, use`ToRad`: `sin(ToRad(45))`."),
-          "",
-          "res/mathfunction.png")
+      .AddExpression("sin",
+                     _("Sine"),
+                     _("Sine of an angle (in radian). "
+                       "If you want to use degrees, use`ToRad`: `sin(ToRad(45))`."),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -408,13 +427,12 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("Expression"));

  extension
-      .AddExpression(
-          "tan",
-          _("Tangent"),
-          _("Tangent of an angle (in radian). "
-            "If you want to use degrees, use`ToRad`: `tan(ToRad(45))`."),
-          "",
-          "res/mathfunction.png")
+      .AddExpression("tan",
+                     _("Tangent"),
+                     _("Tangent of an angle (in radian). "
+                       "If you want to use degrees, use`ToRad`: `tan(ToRad(45))`."),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Expression"));

  extension
@@ -444,28 +462,26 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
      .AddParameter("expression", _("x (in a+(b-a)*x)"));

  extension
-      .AddExpression(
-          "XFromAngleAndDistance",
-          _("X position from angle and distance"),
-          _("Compute the X position when given an angle and distance "
-            "relative to the origin (0;0). This is also known as "
-            "getting the cartesian coordinates of a 2D vector, using "
-            "its polar coordinates."),
-          "",
-          "res/mathfunction.png")
+      .AddExpression("XFromAngleAndDistance",
+                     _("X position from angle and distance"),
+                     _("Compute the X position when given an angle and distance "
+                      "relative to the origin (0;0). This is also known as "
+                      "getting the cartesian coordinates of a 2D vector, using "
+                      "its polar coordinates."),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Angle, in degrees"))
      .AddParameter("expression", _("Distance"));

  extension
-      .AddExpression(
-          "YFromAngleAndDistance",
-          _("Y position from angle and distance"),
-          _("Compute the Y position when given an angle and distance "
-            "relative to the origin (0;0). This is also known as "
-            "getting the cartesian coordinates of a 2D vector, using "
-            "its polar coordinates."),
-          "",
-          "res/mathfunction.png")
+      .AddExpression("YFromAngleAndDistance",
+                     _("Y position from angle and distance"),
+                     _("Compute the Y position when given an angle and distance "
+                      "relative to the origin (0;0). This is also known as "
+                      "getting the cartesian coordinates of a 2D vector, using "
+                      "its polar coordinates."),
+                     "",
+                     "res/mathfunction.png")
      .AddParameter("expression", _("Angle, in degrees"))
      .AddParameter("expression", _("Distance"));

@@ -480,8 +496,7 @@ BuiltinExtensionsImplementer::ImplementsMathematicalToolsExtension(
  extension
      .AddExpression("lerpAngle",
                     _("Lerp (Linear interpolation) between two angles"),
-                     _("Linearly interpolates between two angles (in degrees) "
-                       "by taking the shortest direction around the circle."),
+                     _("Linearly interpolates between two angles (in degrees) by taking the shortest direction around the circle."),
                     "",
                     "res/mathfunction.png")
      .AddParameter("expression", _("Starting angle, in degrees"))
--- a/Core/GDCore/Extensions/Builtin/MouseExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/MouseExtension.cpp
@@ -252,8 +252,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
                    "res/conditions/mouse.png")
      .AddCodeOnlyParameter("currentScene", "")
      .AddParameter("mouse", _("Button to check"))
-      .MarkAsSimple()
-      .SetHidden();
+      .MarkAsSimple();

  // Support for deprecated names:
  extension.AddDuplicatedCondition("SourisBouton", "MouseButtonPressed")
@@ -263,41 +262,49 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
      .AddCondition("MouseButtonReleased",
                    _("Mouse button released"),
                    _("Check if the specified mouse button was released."),
-                    _("Touch or _PARAM1_ mouse button is released"),
+                    _("_PARAM1_ mouse button was released"),
                    "",
                    "res/conditions/mouse24.png",
                    "res/conditions/mouse.png")
      .AddCodeOnlyParameter("currentScene", "")
      .AddParameter("mouse", _("Button to check"))
-      .MarkAsSimple()
-      .SetHidden();
+      .MarkAsSimple();

  extension
      .AddCondition(
          "MouseButtonFromTextPressed",
-          _("Mouse button pressed or touch held"),
-          _("Check if the specified mouse button is pressed or "
-              "if a touch is in contact with the screen."),
-          _("Touch or _PARAM1_ mouse button is down"),
+          _("Mouse button pressed or touch held (text expression)"),
+          _("Check if a mouse button, retrieved from the result of the "
+            "expression, is pressed."),
+          _("_PARAM1_ mouse button is pressed"),
          "",
          "res/conditions/mouse24.png",
          "res/conditions/mouse.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("mouseButton", _("Button to check"))
-      .MarkAsSimple();
+      .AddParameter("stringWithSelector",
+                    _("Expression generating the mouse button to check"),
+                    "[\"Left\", \"Right\", \"Middle\"]")
+      .SetParameterLongDescription(
+          _("Possible values are Left, Right and Middle."))
+      .MarkAsAdvanced();

  extension
      .AddCondition(
          "MouseButtonFromTextReleased",
-          _("Mouse button released"),
-          _("Check if the specified mouse button was released."),
-          _("Touch or _PARAM1_ mouse button is released"),
+          _("Mouse button released (text expression)"),
+          _("Check if a mouse button, retrieved from the result of the "
+            "expression, was just released."),
+          _("_PARAM1_ mouse button is released"),
          "",
          "res/conditions/mouse24.png",
          "res/conditions/mouse.png")
      .AddCodeOnlyParameter("currentScene", "")
-      .AddParameter("mouseButton", _("Button to check"))
-      .MarkAsSimple();
+      .AddParameter("stringWithSelector",
+                    _("Expression generating the mouse button to check"),
+                    "[\"Left\", \"Right\", \"Middle\"]")
+      .SetParameterLongDescription(
+          _("Possible values are Left, Right and Middle."))
+      .MarkAsAdvanced();

  extension
      .AddExpressionAndCondition("number",
@@ -331,7 +338,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
      .AddParameter("expression", _("Camera number (default : 0)"), "", true)
      .SetDefaultValue("0");

-  // Deprecated
  extension
      .AddCondition(
          "PopStartedTouch",
@@ -348,7 +354,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
      .AddCodeOnlyParameter("currentScene", "")
      .SetHidden();

-  // Deprecated
  extension
      .AddCondition(
          "PopEndedTouch",
@@ -365,7 +370,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
      .AddCodeOnlyParameter("currentScene", "")
      .SetHidden();

-  // Deprecated
  extension
      .AddCondition(
          "HasAnyTouchStarted",
--- a/Core/GDCore/Extensions/Builtin/SceneExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/SceneExtension.cpp
@@ -182,7 +182,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSceneExtension(
                                "SceneLoadingProgress",
                                _("Scene loading progress"),
                                _("The progress of resources loading in background for a scene (between 0 and 1)."),
-                                _("_PARAM1_ loading progress"),
+                                _("_PARAM0_ loading progress"),
                                _(""),
                                "res/actions/hourglass_black.svg")
      .SetHelpPath("/all-features/resources-loading")
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/Animation.cpp
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/Animation.cpp
@@ -6,6 +6,8 @@

 #include "GDCore/Extensions/Builtin/SpriteExtension/Animation.h"
 #include <vector>
+#include "GDCore/Extensions/Builtin/SpriteExtension/Direction.h"
+#include "GDCore/Extensions/Builtin/SpriteExtension/Sprite.h"
 #include "GDCore/String.h"

 namespace gd {
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/Animation.h
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/Animation.h
@@ -4,11 +4,13 @@
 * reserved. This project is released under the MIT License.
 */

-#pragma once
-
+#ifndef GDCORE_ANIMATION_H
+#define GDCORE_ANIMATION_H
 #include <vector>
 #include "GDCore/String.h"
-#include "GDCore/Extensions/Builtin/SpriteExtension/Direction.h"
+namespace gd {
+class Direction;
+}

 namespace gd {

@@ -91,3 +93,4 @@ class GD_CORE_API Animation {
 };

 }  // namespace gd
+#endif  // GDCORE_ANIMATION_H
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/Direction.h
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/Direction.h
@@ -3,12 +3,12 @@
 * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
 * reserved. This project is released under the MIT License.
 */
-#pragma once
-
+#ifndef GDCORE_DIRECTION_H
+#define GDCORE_DIRECTION_H
 #include <vector>
 #include "GDCore/String.h"
-#include "GDCore/Extensions/Builtin/SpriteExtension/Sprite.h"
 namespace gd {
+class Sprite;
 class SerializerElement;
 }

@@ -142,3 +142,4 @@ class GD_CORE_API Direction {
 };

 }  // namespace gd
+#endif  // GDCORE_DIRECTION_H
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteAnimationList.cpp
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteAnimationList.cpp
@@ -1,164 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-
-#include "GDCore/Extensions/Builtin/SpriteExtension/SpriteAnimationList.h"
-
-#include <algorithm>
-
-#include "GDCore/CommonTools.h"
-#include "GDCore/Extensions/Builtin/SpriteExtension/Animation.h"
-#include "GDCore/Extensions/Builtin/SpriteExtension/Direction.h"
-#include "GDCore/IDE/Project/ArbitraryResourceWorker.h"
-#include "GDCore/Project/InitialInstance.h"
-#include "GDCore/Project/Layout.h"
-#include "GDCore/Project/Object.h"
-#include "GDCore/Project/Project.h"
-#include "GDCore/Project/PropertyDescriptor.h"
-#include "GDCore/Serialization/SerializerElement.h"
-#include "GDCore/Tools/Localization.h"
-
-namespace gd {
-
-Animation SpriteAnimationList::badAnimation;
-
-SpriteAnimationList::SpriteAnimationList()
-    : adaptCollisionMaskAutomatically(true) {}
-
-SpriteAnimationList::~SpriteAnimationList(){};
-
-void SpriteAnimationList::UnserializeFrom(const gd::SerializerElement& element) {
-  adaptCollisionMaskAutomatically =
-      element.GetBoolAttribute("adaptCollisionMaskAutomatically", false);
-
-  RemoveAllAnimations();
-  const gd::SerializerElement& animationsElement =
-      element.GetChild("animations", 0, "Animations");
-  animationsElement.ConsiderAsArrayOf("animation", "Animation");
-  for (std::size_t i = 0; i < animationsElement.GetChildrenCount(); ++i) {
-    const gd::SerializerElement& animationElement =
-        animationsElement.GetChild(i);
-    Animation newAnimation;
-
-    newAnimation.useMultipleDirections = animationElement.GetBoolAttribute(
-        "useMultipleDirections", false, "typeNormal");
-    newAnimation.SetName(animationElement.GetStringAttribute("name", ""));
-
-    // Compatibility with GD <= 3.3
-    if (animationElement.HasChild("Direction")) {
-      for (std::size_t j = 0;
-           j < animationElement.GetChildrenCount("Direction");
-           ++j) {
-        Direction direction;
-        direction.UnserializeFrom(animationElement.GetChild("Direction", j));
-
-        newAnimation.SetDirectionsCount(newAnimation.GetDirectionsCount() + 1);
-        newAnimation.SetDirection(direction,
-                                  newAnimation.GetDirectionsCount() - 1);
-      }
-    }
-    // End of compatibility code
-    else {
-      const gd::SerializerElement& directionsElement =
-          animationElement.GetChild("directions");
-      directionsElement.ConsiderAsArrayOf("direction");
-      for (std::size_t j = 0; j < directionsElement.GetChildrenCount(); ++j) {
-        Direction direction;
-        direction.UnserializeFrom(directionsElement.GetChild(j));
-
-        newAnimation.SetDirectionsCount(newAnimation.GetDirectionsCount() + 1);
-        newAnimation.SetDirection(direction,
-                                  newAnimation.GetDirectionsCount() - 1);
-      }
-    }
-
-    AddAnimation(newAnimation);
-  }
-}
-
-void SpriteAnimationList::SerializeTo(gd::SerializerElement& element) const {
-  element.SetAttribute("adaptCollisionMaskAutomatically",
-                       adaptCollisionMaskAutomatically);
-
-  // Animations
-  gd::SerializerElement& animationsElement = element.AddChild("animations");
-  animationsElement.ConsiderAsArrayOf("animation");
-  for (std::size_t k = 0; k < GetAnimationsCount(); k++) {
-    gd::SerializerElement& animationElement =
-        animationsElement.AddChild("animation");
-
-    animationElement.SetAttribute("useMultipleDirections",
-                                  GetAnimation(k).useMultipleDirections);
-    animationElement.SetAttribute("name", GetAnimation(k).GetName());
-
-    gd::SerializerElement& directionsElement =
-        animationElement.AddChild("directions");
-    directionsElement.ConsiderAsArrayOf("direction");
-    for (std::size_t l = 0; l < GetAnimation(k).GetDirectionsCount(); l++) {
-      GetAnimation(k).GetDirection(l).SerializeTo(
-          directionsElement.AddChild("direction"));
-    }
-  }
-}
-
-void SpriteAnimationList::ExposeResources(gd::ArbitraryResourceWorker& worker) {
-  for (std::size_t j = 0; j < GetAnimationsCount(); j++) {
-    for (std::size_t k = 0; k < GetAnimation(j).GetDirectionsCount(); k++) {
-      for (std::size_t l = 0;
-           l < GetAnimation(j).GetDirection(k).GetSpritesCount();
-           l++) {
-        worker.ExposeImage(
-            GetAnimation(j).GetDirection(k).GetSprite(l).GetImageName());
-      }
-    }
-  }
-}
-
-bool SpriteAnimationList::HasAnimationNamed(const gd::String &name) const {
-  return !name.empty() && (find_if(animations.begin(), animations.end(),
-                                   [&name](const Animation &animation) {
-                                     return animation.GetName() == name;
-                                   }) != animations.end());
-}
-
-const Animation& SpriteAnimationList::GetAnimation(std::size_t nb) const {
-  if (nb >= animations.size()) return badAnimation;
-
-  return animations[nb];
-}
-
-Animation& SpriteAnimationList::GetAnimation(std::size_t nb) {
-  if (nb >= animations.size()) return badAnimation;
-
-  return animations[nb];
-}
-
-void SpriteAnimationList::AddAnimation(const Animation& animation) {
-  animations.push_back(animation);
-}
-
-bool SpriteAnimationList::RemoveAnimation(std::size_t nb) {
-  if (nb >= GetAnimationsCount()) return false;
-
-  animations.erase(animations.begin() + nb);
-  return true;
-}
-
-void SpriteAnimationList::SwapAnimations(std::size_t firstIndex,
-                                  std::size_t secondIndex) {
-  if (firstIndex < animations.size() && secondIndex < animations.size() &&
-      firstIndex != secondIndex)
-    std::swap(animations[firstIndex], animations[secondIndex]);
-}
-
-void SpriteAnimationList::MoveAnimation(std::size_t oldIndex, std::size_t newIndex) {
-  if (oldIndex >= animations.size() || newIndex >= animations.size()) return;
-
-  auto animation = animations[oldIndex];
-  animations.erase(animations.begin() + oldIndex);
-  animations.insert(animations.begin() + newIndex, animation);
-}
-
-}  // namespace gd
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteAnimationList.h
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteAnimationList.h
@@ -1,124 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-
-#pragma once
-
-#include "GDCore/Extensions/Builtin/SpriteExtension/Animation.h"
-
-namespace gd {
-class InitialInstance;
-class SerializerElement;
-class PropertyDescriptor;
-class ArbitraryResourceWorker;
-}  // namespace gd
-
-namespace gd {
-
-/**
- * \brief A list of animations, containing directions with images and collision mask.
- * 
- * It's used in the configuration of object that implements image-based animations.
- *
- * \see Animation
- * \see Direction
- * \see Sprite
- * \ingroup SpriteObjectExtension
- */
-class GD_CORE_API SpriteAnimationList {
- public:
-  SpriteAnimationList();
-  virtual ~SpriteAnimationList();
-
-  void ExposeResources(gd::ArbitraryResourceWorker& worker);
-
-  /**
-   * \brief Return the animation at the specified index.
-   * If the index is out of bound, a "bad animation" object is returned.
-   */
-  const Animation& GetAnimation(std::size_t nb) const;
-
-  /**
-   * \brief Return the animation at the specified index.
-   * If the index is out of bound, a "bad animation" object is returned.
-   */
-  Animation& GetAnimation(std::size_t nb);
-
-  /**
-   * \brief Return the number of animations this object has.
-   */
-  std::size_t GetAnimationsCount() const { return animations.size(); };
-
-  /**
-   * \brief Return true if an animation exists for a given name.
-   */
-  bool HasAnimationNamed(const gd::String &name) const;
-
-  /**
-   * \brief Add an animation at the end of the existing ones.
-   */
-  void AddAnimation(const Animation& animation);
-
-  /**
-   * \brief Remove an animation.
-   */
-  bool RemoveAnimation(std::size_t nb);
-
-  /**
-   * \brief Remove all animations.
-   */
-  void RemoveAllAnimations() { animations.clear(); }
-
-  /**
-   * \brief Return true if the object hasn't any animation.
-   */
-  bool HasNoAnimations() const { return animations.empty(); }
-
-  /**
-   * \brief Swap the position of two animations
-   */
-  void SwapAnimations(std::size_t firstIndex, std::size_t secondIndex);
-
-  /**
-   * \brief Change the position of the specified animation
-   */
-  void MoveAnimation(std::size_t oldIndex, std::size_t newIndex);
-
-  /**
-   * \brief Return a read-only reference to the vector containing all the
-   * animation of the object.
-   */
-  const std::vector<Animation>& GetAllAnimations() const { return animations; }
-
-  /**
-   * @brief Check if the collision mask adapts automatically to the animation.
-   */
-  bool AdaptCollisionMaskAutomatically() const {
-    return adaptCollisionMaskAutomatically;
-  }
-
-  /**
-   * @brief Set if the collision mask adapts automatically to the animation.
-   */
-  void SetAdaptCollisionMaskAutomatically(bool enable) {
-    adaptCollisionMaskAutomatically = enable;
-  }
-
-  void UnserializeFrom(const gd::SerializerElement& element);
-  void SerializeTo(gd::SerializerElement& element) const;
-
- private:
-
-  mutable std::vector<Animation> animations;
-
-  static Animation badAnimation;         //< Bad animation when an out of bound
-                                         // animation is requested.
-  bool adaptCollisionMaskAutomatically;  ///< If set to true, the collision
-                                         ///< mask will be automatically
-                                         ///< adapted to the animation of the
-                                         ///< object.
-};
-
-}  // namespace gd
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteExtension.cpp
@@ -33,7 +33,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSpriteExtension(
                                     "most elements of a game."),
                                   "CppPlatform/Extensions/spriteicon.png")
          .SetCategoryFullName(_("General"))
-          .SetOpenFullEditorLabel(_("Edit animations"))
          .AddDefaultBehavior("EffectCapability::EffectBehavior")
          .AddDefaultBehavior("ResizableCapability::ResizableBehavior")
          .AddDefaultBehavior("ScalableCapability::ScalableBehavior")
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteObject.cpp
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteObject.cpp
@@ -23,45 +23,127 @@

 namespace gd {

+Animation SpriteObject::badAnimation;
+
 SpriteObject::SpriteObject()
-    : updateIfNotVisible(false),
-      preScale(1) {}
+    : updateIfNotVisible(false), adaptCollisionMaskAutomatically(true) {}

 SpriteObject::~SpriteObject(){};

 void SpriteObject::DoUnserializeFrom(gd::Project& project,
                                     const gd::SerializerElement& element) {
  updateIfNotVisible = element.GetBoolAttribute("updateIfNotVisible", true);
-  preScale = element.GetDoubleAttribute("preScale", 1);
-  animations.UnserializeFrom(element);
+  adaptCollisionMaskAutomatically =
+      element.GetBoolAttribute("adaptCollisionMaskAutomatically", false);
+
+  RemoveAllAnimations();
+  const gd::SerializerElement& animationsElement =
+      element.GetChild("animations", 0, "Animations");
+  animationsElement.ConsiderAsArrayOf("animation", "Animation");
+  for (std::size_t i = 0; i < animationsElement.GetChildrenCount(); ++i) {
+    const gd::SerializerElement& animationElement =
+        animationsElement.GetChild(i);
+    Animation newAnimation;
+
+    newAnimation.useMultipleDirections = animationElement.GetBoolAttribute(
+        "useMultipleDirections", false, "typeNormal");
+    newAnimation.SetName(animationElement.GetStringAttribute("name", ""));
+
+    // Compatibility with GD <= 3.3
+    if (animationElement.HasChild("Direction")) {
+      for (std::size_t j = 0;
+           j < animationElement.GetChildrenCount("Direction");
+           ++j) {
+        Direction direction;
+        direction.UnserializeFrom(animationElement.GetChild("Direction", j));
+
+        newAnimation.SetDirectionsCount(newAnimation.GetDirectionsCount() + 1);
+        newAnimation.SetDirection(direction,
+                                  newAnimation.GetDirectionsCount() - 1);
+      }
+    }
+    // End of compatibility code
+    else {
+      const gd::SerializerElement& directionsElement =
+          animationElement.GetChild("directions");
+      directionsElement.ConsiderAsArrayOf("direction");
+      for (std::size_t j = 0; j < directionsElement.GetChildrenCount(); ++j) {
+        Direction direction;
+        direction.UnserializeFrom(directionsElement.GetChild(j));
+
+        newAnimation.SetDirectionsCount(newAnimation.GetDirectionsCount() + 1);
+        newAnimation.SetDirection(direction,
+                                  newAnimation.GetDirectionsCount() - 1);
+      }
+    }
+
+    AddAnimation(newAnimation);
+  }
 }

 void SpriteObject::DoSerializeTo(gd::SerializerElement& element) const {
  element.SetAttribute("updateIfNotVisible", updateIfNotVisible);
-  if (preScale != 1) {
-    element.SetAttribute("preScale", preScale);
+  element.SetAttribute("adaptCollisionMaskAutomatically",
+                       adaptCollisionMaskAutomatically);
+
+  // Animations
+  gd::SerializerElement& animationsElement = element.AddChild("animations");
+  animationsElement.ConsiderAsArrayOf("animation");
+  for (std::size_t k = 0; k < GetAnimationsCount(); k++) {
+    gd::SerializerElement& animationElement =
+        animationsElement.AddChild("animation");
+
+    animationElement.SetAttribute("useMultipleDirections",
+                                  GetAnimation(k).useMultipleDirections);
+    animationElement.SetAttribute("name", GetAnimation(k).GetName());
+
+    gd::SerializerElement& directionsElement =
+        animationElement.AddChild("directions");
+    directionsElement.ConsiderAsArrayOf("direction");
+    for (std::size_t l = 0; l < GetAnimation(k).GetDirectionsCount(); l++) {
+      GetAnimation(k).GetDirection(l).SerializeTo(
+          directionsElement.AddChild("direction"));
+    }
  }
-  animations.SerializeTo(element);
 }

 std::map<gd::String, gd::PropertyDescriptor> SpriteObject::GetProperties()
    const {
  std::map<gd::String, gd::PropertyDescriptor> properties;
+  properties[_("Animate even if hidden or far from the screen")]
+      .SetValue(updateIfNotVisible ? "true" : "false")
+      .SetType("Boolean");
+  properties["PLEASE_ALSO_SHOW_EDIT_BUTTON_THANKS"].SetValue("");
+
  return properties;
 }

 bool SpriteObject::UpdateProperty(const gd::String& name,
                                  const gd::String& value) {
+  if (name == _("Animate even if hidden or far from the screen"))
+    updateIfNotVisible = value == "1";
+
  return true;
 }

 void SpriteObject::ExposeResources(gd::ArbitraryResourceWorker& worker) {
-  animations.ExposeResources(worker);
+  for (std::size_t j = 0; j < GetAnimationsCount(); j++) {
+    for (std::size_t k = 0; k < GetAnimation(j).GetDirectionsCount(); k++) {
+      for (std::size_t l = 0;
+           l < GetAnimation(j).GetDirection(k).GetSpritesCount();
+           l++) {
+        worker.ExposeImage(
+            GetAnimation(j).GetDirection(k).GetSprite(l).GetImageName());
+      }
+    }
+  }
 }

 std::map<gd::String, gd::PropertyDescriptor>
 SpriteObject::GetInitialInstanceProperties(
-    const gd::InitialInstance& initialInstance) {
+    const gd::InitialInstance& initialInstance,
+    gd::Project& project,
+    gd::Layout& scene) {
  std::map<gd::String, gd::PropertyDescriptor> properties;
  properties["animation"] =
      gd::PropertyDescriptor(
@@ -75,7 +157,9 @@ SpriteObject::GetInitialInstanceProperties(
 bool SpriteObject::UpdateInitialInstanceProperty(
    gd::InitialInstance& initialInstance,
    const gd::String& name,
-    const gd::String& value) {
+    const gd::String& value,
+    gd::Project& project,
+    gd::Layout& scene) {
  if (name == "animation") {
    initialInstance.SetRawDoubleProperty(
        "animation", std::max(0, value.empty() ? 0 : value.To<int>()));
@@ -84,25 +168,42 @@ bool SpriteObject::UpdateInitialInstanceProperty(
  return true;
 }

-size_t SpriteObject::GetAnimationsCount() const {
-  return animations.GetAnimationsCount();
+const Animation& SpriteObject::GetAnimation(std::size_t nb) const {
+  if (nb >= animations.size()) return badAnimation;
+
+  return animations[nb];
 }

-const gd::String &SpriteObject::GetAnimationName(size_t index) const {
-  return animations.GetAnimation(index).GetName();
+Animation& SpriteObject::GetAnimation(std::size_t nb) {
+  if (nb >= animations.size()) return badAnimation;
+
+  return animations[nb];
 }

-bool SpriteObject::HasAnimationNamed(
-    const gd::String &name) const {
-  return animations.HasAnimationNamed(name);
+void SpriteObject::AddAnimation(const Animation& animation) {
+  animations.push_back(animation);
 }

-const SpriteAnimationList& SpriteObject::GetAnimations() const {
-  return animations;
+bool SpriteObject::RemoveAnimation(std::size_t nb) {
+  if (nb >= GetAnimationsCount()) return false;
+
+  animations.erase(animations.begin() + nb);
+  return true;
 }

-SpriteAnimationList& SpriteObject::GetAnimations() {
-  return animations;
+void SpriteObject::SwapAnimations(std::size_t firstIndex,
+                                  std::size_t secondIndex) {
+  if (firstIndex < animations.size() && secondIndex < animations.size() &&
+      firstIndex != secondIndex)
+    std::swap(animations[firstIndex], animations[secondIndex]);
+}
+
+void SpriteObject::MoveAnimation(std::size_t oldIndex, std::size_t newIndex) {
+  if (oldIndex >= animations.size() || newIndex >= animations.size()) return;
+
+  auto animation = animations[oldIndex];
+  animations.erase(animations.begin() + oldIndex);
+  animations.insert(animations.begin() + newIndex, animation);
 }

 }  // namespace gd
--- a/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteObject.h
+++ b/Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteObject.h
@@ -4,15 +4,18 @@
 * reserved. This project is released under the MIT License.
 */

-#pragma once
-
-#include "GDCore/Extensions/Builtin/SpriteExtension/SpriteAnimationList.h"
+#ifndef GDCORE_SPRITEOBJECT_H
+#define GDCORE_SPRITEOBJECT_H
+#include "GDCore/Extensions/Builtin/SpriteExtension/Animation.h"
+#include "GDCore/Extensions/Builtin/SpriteExtension/Direction.h"
+#include "GDCore/Extensions/Builtin/SpriteExtension/Sprite.h"
 #include "GDCore/Project/Object.h"
-
 namespace gd {
 class InitialInstance;
 class Object;
 class Layout;
+class Sprite;
+class Animation;
 class SerializerElement;
 class PropertyDescriptor;
 }  // namespace gd
@@ -47,26 +50,85 @@ class GD_CORE_API SpriteObject : public gd::ObjectConfiguration {
  bool UpdateProperty(const gd::String& name, const gd::String& value) override;

  std::map<gd::String, gd::PropertyDescriptor> GetInitialInstanceProperties(
-      const gd::InitialInstance& position) override;
+      const gd::InitialInstance& position,
+      gd::Project& project,
+      gd::Layout& scene) override;
  bool UpdateInitialInstanceProperty(gd::InitialInstance& position,
                                     const gd::String& name,
-                                     const gd::String& value) override;
+                                     const gd::String& value,
+                                     gd::Project& project,
+                                     gd::Layout& scene) override;

-  size_t GetAnimationsCount() const override;
-
-  const gd::String &GetAnimationName(size_t index) const override;
-
-  bool HasAnimationNamed(const gd::String &animationName) const override;
-  
-  /**
-   * \brief Return the animation configuration.
+  /** \name Animations
+   * Methods related to animations management
   */
-  const SpriteAnimationList& GetAnimations() const;
+  ///@{
+  /**
+   * \brief Return the animation at the specified index.
+   * If the index is out of bound, a "bad animation" object is returned.
+   */
+  const Animation& GetAnimation(std::size_t nb) const;

  /**
-   * @brief Return the animation configuration.
+   * \brief Return the animation at the specified index.
+   * If the index is out of bound, a "bad animation" object is returned.
   */
-  SpriteAnimationList& GetAnimations();
+  Animation& GetAnimation(std::size_t nb);
+
+  /**
+   * \brief Return the number of animations this object has.
+   */
+  std::size_t GetAnimationsCount() const { return animations.size(); };
+
+  /**
+   * \brief Add an animation at the end of the existing ones.
+   */
+  void AddAnimation(const Animation& animation);
+
+  /**
+   * \brief Remove an animation.
+   */
+  bool RemoveAnimation(std::size_t nb);
+
+  /**
+   * \brief Remove all animations.
+   */
+  void RemoveAllAnimations() { animations.clear(); }
+
+  /**
+   * \brief Return true if the object hasn't any animation.
+   */
+  bool HasNoAnimations() const { return animations.empty(); }
+
+  /**
+   * \brief Swap the position of two animations
+   */
+  void SwapAnimations(std::size_t firstIndex, std::size_t secondIndex);
+
+  /**
+   * \brief Change the position of the specified animation
+   */
+  void MoveAnimation(std::size_t oldIndex, std::size_t newIndex);
+
+  /**
+   * \brief Return a read-only reference to the vector containing all the
+   * animation of the object.
+   */
+  const std::vector<Animation>& GetAllAnimations() const { return animations; }
+
+  /**
+   * @brief Check if the collision mask adapts automatically to the animation.
+   */
+  bool AdaptCollisionMaskAutomatically() const {
+    return adaptCollisionMaskAutomatically;
+  }
+
+  /**
+   * @brief Set if the collision mask adapts automatically to the animation.
+   */
+  void SetAdaptCollisionMaskAutomatically(bool enable) {
+    adaptCollisionMaskAutomatically = enable;
+  }

  /**
   * \brief Set if the object animation should be played even if the object is
@@ -81,35 +143,25 @@ class GD_CORE_API SpriteObject : public gd::ObjectConfiguration {
   * is hidden or far from the camera (false by default).
   */
  bool GetUpdateIfNotVisible() const { return updateIfNotVisible; }
-
-  /**
-   * \brief Return the scale applied to object to evaluate the default dimensions.
-   */
-  double GetPreScale() { return preScale; }
-
-  /**
-   * \brief Set the scale applied to object to evaluate the default dimensions.
-   * 
-   * Its value must be strictly positive.
-   */
-  void SetPreScale(double preScale_) {
-    if (preScale_ <= 0) {
-      return;
-    }
-    preScale = preScale_;
-  }
+  ///@}

 private:
  void DoUnserializeFrom(gd::Project& project,
                         const gd::SerializerElement& element) override;
  void DoSerializeTo(gd::SerializerElement& element) const override;

-  SpriteAnimationList animations;
-
+  mutable std::vector<Animation> animations;
  bool updateIfNotVisible;  ///< If set to true, ask the game engine to play
                            ///< object animation even if hidden or far from
                            ///< the screen.
-  double preScale;
+
+  static Animation badAnimation;         //< Bad animation when an out of bound
+                                         // animation is requested.
+  bool adaptCollisionMaskAutomatically;  ///< If set to true, the collision
+                                         ///< mask will be automatically
+                                         ///< adapted to the animation of the
+                                         ///< object.
 };

 }  // namespace gd
+#endif  // GDCORE_SPRITEOBJECT_H
--- a/Core/GDCore/Extensions/Builtin/TimeExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/TimeExtension.cpp
@@ -43,9 +43,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTimeExtension(
      .AddCondition("CompareTimer",
                    _("Value of a scene timer"),
                    _("Compare the elapsed time of a scene timer. This "
-                      "condition doesn't start the timer and will always be "
-                      "false if the timer was not started previously (whatever "
-                      "the comparison being made)."),
+                      "condition doesn't start the timer."),
                    _("The timer _PARAM1_ _PARAM2_ _PARAM3_ seconds"),

                    "",
--- a/Core/GDCore/Extensions/Builtin/VariablesExtension.cpp
+++ b/Core/GDCore/Extensions/Builtin/VariablesExtension.cpp
@@ -25,286 +25,29 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
  extension.AddInstructionOrExpressionGroupMetadata(_("Variables"))
      .SetIcon("res/conditions/var24.png");

-  extension
-      .AddCondition("NumberVariable",
-                    _("Variable value"),
-                    _("Compare the number value of a variable."),
-                    _("The variable _PARAM0_"),
-                    "",
-                    "res/conditions/var24.png",
-                    "res/conditions/var.png")
-      .AddParameter("variableOrPropertyOrParameter", _("Variable"))
-      .UseStandardRelationalOperatorParameters(
-          "number", ParameterOptions::MakeNewOptions());
-
-  extension
-      .AddCondition("StringVariable",
-                    _("Variable value"),
-                    _("Compare the text (string) of a variable."),
-                    _("The variable _PARAM0_"),
-                    "",
-                    "res/conditions/var24.png",
-                    "res/conditions/var.png")
-      .AddParameter("variableOrPropertyOrParameter", _("Variable"))
-      .UseStandardRelationalOperatorParameters(
-          "string", ParameterOptions::MakeNewOptions());
-
-  extension
-      .AddCondition(
-          "BooleanVariable",
-          _("Variable value"),
-          _("Compare the boolean value of a variable."),
-          _("The variable _PARAM0_ is _PARAM1_"),
-          "",
-          "res/conditions/var24.png",
-          "res/conditions/var.png")
-      .AddParameter("variableOrPropertyOrParameter", _("Variable"))
-      .AddParameter("trueorfalse", _("Check if the value is"))
-      .SetDefaultValue("true")
-      // This parameter allows to keep the operand expression
-      // when the editor switch between variable instructions.
-      .AddCodeOnlyParameter("trueorfalse", "");
-
-  extension
-      .AddAction("SetNumberVariable",
-                 _("Change variable value"),
-                 _("Modify the number value of a variable."),
-                 _("the variable _PARAM0_"),
-                 "",
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variableOrProperty", _("Variable"))
-      .UseStandardOperatorParameters("number",
-                                     ParameterOptions::MakeNewOptions());
-
-  extension
-      .AddAction("SetStringVariable",
-                 _("Change variable value"),
-                 _("Modify the text (string) of a variable."),
-                 _("the variable _PARAM0_"),
-                 "",
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variableOrProperty", _("Variable"))
-      .UseStandardOperatorParameters("string",
-                                     ParameterOptions::MakeNewOptions());
-
-  extension
-      .AddAction(
-          "SetBooleanVariable",
-          _("Change variable value"),
-          _("Modify the boolean value of a variable."),
-          _("Change the variable _PARAM0_: _PARAM1_"),
-          "",
-          "res/conditions/var24.png",
-          "res/conditions/var.png")
-      .AddParameter("variableOrProperty", _("Variable"))
-      .AddParameter("operator", _("Value"), "boolean")
-      // This parameter allows to keep the operand expression
-      // when the editor switch between variable instructions.
-      .AddCodeOnlyParameter("trueorfalse", "");
-
-  extension
-      .AddCondition(
-          "VariableChildCount",
-          _("Number of children"),
-          _("Compare the number of children in an array variable."),
-          _("The number of children in the array variable _PARAM0_"),
-          _("Arrays and structures"),
-          "res/conditions/var24.png",
-          "res/conditions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .UseStandardRelationalOperatorParameters(
-          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddCondition("VariableChildExists2",
-                    _("Child existence"),
-                    _("Check if the specified child of the structure "
-                      "variable exists."),
-                    _("Child _PARAM1_ of variable _PARAM0_ exists"),
-                    _("Arrays and structures"),
-                    "res/conditions/var24.png",
-                    "res/conditions/var.png")
-      .AddParameter("variable", _("Variable"))
-      .AddParameter("string", _("Name of the child"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction(
-          "RemoveVariableChild",
-          _("Remove a child"),
-          _("Remove a child from a structure variable."),
-          _("Remove child _PARAM1_ from structure variable _PARAM0_"),
-          _("Arrays and structures"),
-          "res/actions/var24.png",
-          "res/actions/var.png")
-      .AddParameter("variable", _("Structure variable"))
-      .AddParameter("string", _("Child's name"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("ClearVariableChildren",
-                 _("Clear children"),
-                 _("Remove all the children from the structure or array "
-                   "variable."),
-                 _("Clear children from variable _PARAM0_"),
-                 _("Arrays and structures"),
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variable", _("Structure or array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("PushVariable",
-                 _("Add existing variable"),
-                 _("Adds an existing variable at the end of an array "
-                   "variable."),
-                 _("Add variable _PARAM1_ to array variable _PARAM0_"),
-                 _("Arrays and structures"),
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .AddParameter("variable", _("Variable with the content to add"))
-      .SetParameterLongDescription(
-          _("The content of the variable will *be copied* and added at the "
-            "end of the array."))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction(
-          "PushString",
-          _("Add value to array variable"),
-          _("Adds a text (string) at the end of a array variable."),
-          _("Add the value _PARAM1_ to array variable _PARAM0_"),
-          _("Arrays and structures"),
-          "res/actions/var24.png",
-          "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .AddParameter("string", _("Text to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("PushNumber",
-                 _("Add value to array variable"),
-                 _("Adds a number at the end of an array variable."),
-                 _("Add the value _PARAM1_ to array variable _PARAM0_"),
-                 _("Arrays and structures"),
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .AddParameter("expression", _("Number to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("PushBoolean",
-                 _("Add value to array variable"),
-                 _("Adds a boolean at the end of an array variable."),
-                 _("Add the value _PARAM1_ to array variable _PARAM0_"),
-                 _("Arrays and structures"),
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .AddParameter("trueorfalse", _("Boolean to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddAction("RemoveVariableAt",
-                 _("Remove variable by index"),
-                 _("Removes a variable at the specified index of an array "
-                   "variable."),
-                 _("Remove variable at index _PARAM1_ from array "
-                   "variable _PARAM0_"),
-                 _("Arrays and structures"),
-                 "res/actions/var24.png",
-                 "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .AddParameter("expression", _("Index to remove"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced();
-
-  extension
-      .AddStrExpression(
-          "VariableFirstString",
-          _("First text child"),
-          _("Get the value of the first element of an array variable, if "
-            "it is a text (string)."),
-          _("Arrays and structures"),
-          "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
-
-  extension
-      .AddExpression(
-          "VariableFirstNumber",
-          _("First number child"),
-          _("Get the value of the first element of an array variable, if "
-            "it is a number."),
-          _("Arrays and structures"),
-          "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
-
-  extension
-      .AddStrExpression(
-          "VariableLastString",
-          _("Last text child"),
-          _("Get the value of the last element of an array variable, if "
-            "it is a text (string)."),
-          _("Arrays and structures"),
-          "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
-
-  extension
-      .AddExpression(
-          "VariableLastNumber",
-          _("Last number child"),
-          _("Get the value of the last element of an array variable, if "
-            "it is a number."),
-          _("Arrays and structures"),
-          "res/actions/var.png")
-      .AddParameter("variable", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
-
-  // Legacy instructions
-
  extension
      .AddCondition("VarScene",
                    _("Number variable"),
                    _("Compare the number value of a scene variable."),
                    _("The number of scene variable _PARAM0_"),
-                    _("External variables ❯ Scene variables"),
+                    _("Scene variables"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddParameter("scenevar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
-          "number", ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+          "number", ParameterOptions::MakeNewOptions());

  extension
      .AddCondition("VarSceneTxt",
                    _("Text variable"),
                    _("Compare the text (string) of a scene variable."),
                    _("The text of scene variable _PARAM0_"),
-                    _("External variables ❯ Scene variables"),
+                    _("Scene variables"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddParameter("scenevar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
-          "string", ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+          "string", ParameterOptions::MakeNewOptions());

  extension
      .AddCondition(
@@ -312,14 +55,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Boolean variable"),
          _("Compare the boolean value of a scene variable."),
          _("The boolean value of scene variable _PARAM0_ is _PARAM1_"),
-          _("External variables ❯ Scene variables"),
+          _("Scene variables"),
          "res/conditions/var24.png",
          "res/conditions/var.png")
      .AddParameter("scenevar", _("Variable"))
      .AddParameter("trueorfalse", _("Check if the value is"))
-      .SetDefaultValue("true")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .SetDefaultValue("true");

  extension
      .AddCondition("VariableChildExists",
@@ -327,14 +68,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                    _("Check if the specified child of the scene structure "
                      "variable exists."),
                    _("Child _PARAM1_ of scene variable _PARAM0_ exists"),
-                    _("External variables ❯ Scene variables ❯ Arrays and structures"),
+                    _("Scene variables/Arrays and structures"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddParameter("scenevar", _("Variable"))
      .AddParameter("string", _("Name of the child"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -343,14 +81,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                    _("Check if the specified child of the global structure "
                      "variable exists."),
                    _("Child _PARAM1_ of global variable _PARAM0_ exists"),
-                    _("External variables ❯ Global variables ❯ Arrays and structures"),
+                    _("Global variables/Arrays and structures"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddParameter("globalvar", _("Variable"))
      .AddParameter("string", _("Name of the child"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -358,7 +93,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                    "Variable defined",
                    "Test if the scene variable exists.",
                    "Scene variable _PARAM0_ is defined",
-                    _("External variables ❯ Scene variables"),
+                    _("Scene variables"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddCodeOnlyParameter("currentScene", "")
@@ -370,14 +105,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                    _("Number variable"),
                    _("Compare the number value of a global variable."),
                    _("the global variable _PARAM0_"),
-                    _("External variables ❯ Global variables"),
+                    _("Global variables"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddParameter("globalvar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
          "number", ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -385,14 +118,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                    _("Text variable"),
                    _("Compare the text (string) of a global variable."),
                    _("the text of the global variable _PARAM0_"),
-                    _("External variables ❯ Global variables"),
+                    _("Global variables"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddParameter("globalvar", _("Variable"))
      .UseStandardRelationalOperatorParameters(
          "string", ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -401,21 +132,19 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Boolean variable"),
          _("Compare the boolean value of a global variable."),
          _("The boolean value of global variable _PARAM0_ is _PARAM1_"),
-          _("External variables ❯ Global variables"),
+          _("Global variables"),
          "res/conditions/var24.png",
          "res/conditions/var.png")
      .AddParameter("globalvar", _("Variable"))
      .AddParameter("trueorfalse", _("Check if the value is"))
-      .SetDefaultValue("true")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .SetDefaultValue("true");

  extension
      .AddCondition("VarGlobalDef",
                    "Variable defined",
                    "Test if a global variable exists.",
                    "Global variable _PARAM0_ is defined",
-                    _("External variables ❯ Global variables"),
+                    _("Global variables"),
                    "res/conditions/var24.png",
                    "res/conditions/var.png")
      .AddCodeOnlyParameter("currentScene", "")
@@ -428,28 +157,24 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Change number variable"),
                 _("Modify the number value of a scene variable."),
                 _("the scene variable _PARAM0_"),
-                 _("External variables ❯ Scene variables"),
+                 _("Scene variables"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Variable"))
      .UseStandardOperatorParameters("number",
-                                     ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+                                     ParameterOptions::MakeNewOptions());

  extension
      .AddAction("ModVarSceneTxt",
                 _("Change text variable"),
                 _("Modify the text (string) of a scene variable."),
                 _("the text of scene variable _PARAM0_"),
-                 _("External variables ❯ Scene variables"),
+                 _("Scene variables"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Variable"))
      .UseStandardOperatorParameters("string",
-                                     ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+                                     ParameterOptions::MakeNewOptions());

  extension
      .AddAction(
@@ -457,13 +182,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Change boolean variable"),
          _("Modify the boolean value of a scene variable."),
          _("Set the boolean value of scene variable _PARAM0_ to _PARAM1_"),
-          _("External variables ❯ Scene variables"),
+          _("Scene variables"),
          "res/conditions/var24.png",
          "res/conditions/var.png")
      .AddParameter("scenevar", _("Variable"))
-      .AddParameter("trueorfalse", _("New Value:"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("trueorfalse", _("New Value:"));

  extension
      .AddAction("ToggleSceneVariableAsBoolean",
@@ -472,26 +195,22 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                     _("If it was true, it will become false, and if it was "
                       "false it will become true."),
                 _("Toggle the boolean value of scene variable _PARAM0_"),
-                 _("External variables ❯ Scene variables"),
+                 _("Scene variables"),
                 "res/conditions/var24.png",
                 "res/conditions/var.png")
-      .AddParameter("scenevar", _("Variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Variable"));

  extension
      .AddAction("ModVarGlobal",
                 _("Change number variable"),
                 _("Modify the number value of a global variable."),
                 _("the global variable _PARAM0_"),
-                 _("External variables ❯ Global variables"),
+                 _("Global variables"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("globalvar", _("Variable"))
      .UseStandardOperatorParameters("number",
                                     ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -499,14 +218,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Change text variable"),
                 _("Modify the text (string) of a global variable."),
                 _("the text of global variable _PARAM0_"),
-                 _("External variables ❯ Global variables"),
+                 _("Global variables"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("globalvar", _("Variable"))
      .UseStandardOperatorParameters("string",
                                     ParameterOptions::MakeNewOptions())
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -515,13 +232,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Change boolean variable"),
          _("Modify the boolean value of a global variable."),
          _("Set the boolean value of global variable _PARAM0_ to _PARAM1_"),
-          _("External variables ❯ Global variables"),
+          _("Global variables"),
          "res/conditions/var24.png",
          "res/conditions/var.png")
      .AddParameter("globalvar", _("Variable"))
-      .AddParameter("trueorfalse", _("New Value:"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("trueorfalse", _("New Value:"));

  extension
      .AddAction("ToggleGlobalVariableAsBoolean",
@@ -530,12 +245,10 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                     _("If it was true, it will become false, and if it was "
                       "false it will become true."),
                 _("Toggle the boolean value of global variable _PARAM0_"),
-                 _("External variables ❯ Global variables"),
+                 _("Global variables"),
                 "res/conditions/var24.png",
                 "res/conditions/var.png")
-      .AddParameter("globalvar", _("Variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Variable"));

  extension
      .AddAction(
@@ -543,15 +256,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Remove a child"),
          _("Remove a child from a scene structure variable."),
          _("Remove child _PARAM1_ from scene structure variable _PARAM0_"),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/actions/var24.png",
          "res/actions/var.png")
      .AddParameter("scenevar", _("Structure variable"))
      .AddParameter("string", _("Child's name"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .MarkAsAdvanced();

  extension
      .AddAction(
@@ -559,15 +269,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Remove a child"),
          _("Remove a child from a global structure variable."),
          _("Remove child _PARAM1_ from global structure variable _PARAM0_"),
-          _("External variables ❯ Global variables ❯ Arrays and structures"),
+          _("Global variables/Arrays and structures"),
          "res/actions/var24.png",
          "res/actions/var.png")
      .AddParameter("globalvar", _("Structure variable"))
      .AddParameter("string", _("Child's name"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .MarkAsAdvanced()
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .MarkAsAdvanced();

  extension
      .AddAction("VariableClearChildren",
@@ -575,13 +282,10 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Remove all the children from the scene structure or array "
                   "variable."),
                 _("Clear children from scene variable _PARAM0_"),
-                 _("External variables ❯ Scene variables ❯ Arrays and structures"),
+                 _("Scene variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Structure or array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -590,13 +294,10 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Remove all the children from the global structure or array "
                   "variable."),
                 _("Clear children from global variable _PARAM0_"),
-                 _("External variables ❯ Global variables ❯ Arrays and structures"),
+                 _("Global variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("globalvar", _("Structure or array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -605,7 +306,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Adds an existing variable at the end of a scene array "
                   "variable."),
                 _("Add variable _PARAM1_ to array variable _PARAM0_"),
-                 _("External variables ❯ Scene variables ❯ Arrays and structures"),
+                 _("Scene variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Array variable"))
@@ -613,9 +314,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
      .SetParameterLongDescription(
          _("The content of the variable will *be copied* and added at the "
            "end of the array."))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -624,14 +322,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Add text variable"),
          _("Adds a text (string) at the end of a scene array variable."),
          _("Add text _PARAM1_ to array variable _PARAM0_"),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/actions/var24.png",
          "res/actions/var.png")
      .AddParameter("scenevar", _("Array variable"))
      .AddParameter("string", _("Text to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -639,14 +334,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Add number variable"),
                 _("Adds a number at the end of a scene array variable."),
                 _("Add number _PARAM1_ to array variable _PARAM0_"),
-                 _("External variables ❯ Scene variables ❯ Arrays and structures"),
+                 _("Scene variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Array variable"))
      .AddParameter("expression", _("Number to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -654,14 +346,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Add boolean variable"),
                 _("Adds a boolean at the end of a scene array variable."),
                 _("Add boolean _PARAM1_ to array variable _PARAM0_"),
-                 _("External variables ❯ Scene variables ❯ Arrays and structures"),
+                 _("Scene variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Array variable"))
      .AddParameter("trueorfalse", _("Boolean to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -671,14 +360,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                   "variable."),
                 _("Remove variable at index _PARAM1_ from scene array "
                   "variable _PARAM0_"),
-                 _("External variables ❯ Scene variables ❯ Arrays and structures"),
+                 _("Scene variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("scenevar", _("Array variable"))
      .AddParameter("expression", _("Index to remove"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -687,15 +373,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Number of children"),
          _("Compare the number of children in a scene array variable."),
          _("The number of children in the array variable _PARAM0_"),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/conditions/var24.png",
          "res/conditions/var.png")
      .AddParameter("scenevar", _("Array variable"))
      .UseStandardRelationalOperatorParameters(
          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -704,12 +387,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("First text child"),
          _("Get the value of the first element of a scene array variable, if "
            "it is a text (string)."),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/actions/var.png")
-      .AddParameter("scenevar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Array variable"));

  extension
      .AddExpression(
@@ -717,12 +397,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("First number child"),
          _("Get the value of the first element of a scene array variable, if "
            "it is a number."),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/actions/var.png")
-      .AddParameter("scenevar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Array variable"));

  extension
      .AddStrExpression(
@@ -730,12 +407,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Last text child"),
          _("Get the value of the last element of a scene array variable, if "
            "it is a text (string)."),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/actions/var.png")
-      .AddParameter("scenevar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Array variable"));

  extension
      .AddExpression(
@@ -743,12 +417,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Last number child"),
          _("Get the value of the last element of a scene array variable, if "
            "it is a number."),
-          _("External variables ❯ Scene variables ❯ Arrays and structures"),
+          _("Scene variables/Arrays and structures"),
          "res/actions/var.png")
-      .AddParameter("scenevar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Array variable"));

  extension
      .AddAction(
@@ -756,7 +427,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Add existing variable"),
          _("Adds an existing variable at the end of a global array variable."),
          _("Add variable _PARAM1_ to array variable _PARAM0_"),
-          _("External variables ❯ Global variables ❯ Arrays and structures"),
+          _("Global variables/Arrays and structures"),
          "res/actions/var24.png",
          "res/actions/var.png")
      .AddParameter("globalvar", _("Array variable"))
@@ -764,9 +435,6 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
      .SetParameterLongDescription(
          _("The content of the variable will *be copied* and added at the "
            "end of the array."))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -776,14 +444,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                   "array variable."),
                 _("Remove variable at index _PARAM1_ from global array "
                   "variable _PARAM0_"),
-                 _("External variables ❯ Global variables ❯ Arrays and structures"),
+                 _("Global variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("globalvar", _("Array variable"))
      .AddParameter("expression", _("Index to remove"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -792,14 +457,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Add text variable"),
          _("Adds a text (string) at the end of a global array variable."),
          _("Add text _PARAM1_ to array variable _PARAM0_"),
-          _("External variables ❯ Global variables ❯ Arrays and structures"),
+          _("Global variables/Arrays and structures"),
          "res/actions/var24.png",
          "res/actions/var.png")
      .AddParameter("globalvar", _("Array variable"))
      .AddParameter("string", _("Text to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -807,14 +469,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Add number variable"),
                 _("Adds a number at the end of a global array variable."),
                 _("Add number _PARAM1_ to array variable _PARAM0_"),
-                 _("External variables ❯ Global variables ❯ Arrays and structures"),
+                 _("Global variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("globalvar", _("Array variable"))
      .AddParameter("expression", _("Number to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -822,14 +481,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                 _("Add boolean variable"),
                 _("Adds a boolean at the end of a global array variable."),
                 _("Add boolean _PARAM1_ to array variable _PARAM0_"),
-                 _("External variables ❯ Global variables ❯ Arrays and structures"),
+                 _("Global variables/Arrays and structures"),
                 "res/actions/var24.png",
                 "res/actions/var.png")
      .AddParameter("globalvar", _("Array variable"))
      .AddParameter("trueorfalse", _("Boolean to add"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -838,15 +494,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Number of children"),
          _("Compare the number of children in a global array variable."),
          _("The number of children of the array variable _PARAM0_"),
-          _("External variables ❯ Global variables ❯ Arrays and structures"),
+          _("Global variables/Arrays and structures"),
          "res/conditions/var24.png",
          "res/conditions/var.png")
      .AddParameter("globalvar", _("Array variable"))
      .UseStandardRelationalOperatorParameters(
          "number", ParameterOptions::MakeNewOptions())
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden()
      .MarkAsAdvanced();

  extension
@@ -854,24 +507,18 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
                        _("First text child"),
                        _("Value of the first element of a global array "
                          "variable, if it is a text (string) variable."),
-                        _("External variables ❯ Global variables ❯ Arrays and structures"),
+                        _("Global variables/Arrays and structures"),
                        "res/actions/var.png")
-      .AddParameter("globalvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Array variable"));

  extension
      .AddExpression("GlobalVariableFirstNumber",
                     _("First number child"),
                     _("Value of the first element of a global array "
                       "variable, if it is a number variable"),
-                     _("External variables ❯ Global variables ❯ Arrays and structures"),
+                     _("Global variables/Arrays and structures"),
                     "res/actions/var.png")
-      .AddParameter("globalvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Array variable"));

  extension
      .AddStrExpression(
@@ -879,12 +526,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Last text child"),
          _("Value of the last element of a global array variable, if "
            "it is a text (string) variable."),
-          _("External variables ❯ Global variables ❯ Arrays and structures"),
+          _("Global variables/Arrays and structures"),
          "res/actions/var.png")
-      .AddParameter("globalvar", _("Array variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Array variable"));

  extension
      .AddExpression(
@@ -892,73 +536,59 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsVariablesExtension(
          _("Last number child"),
          _("Value of the last element of a global array variable, if "
            "it is a number variable"),
-          _("External variables ❯ Global variables ❯ Arrays and structures"),
+          _("Global variables/Arrays and structures"),
          "res/actions/var.png")
-      .AddParameter("globalvar", _("Array variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Array variable"));

  extension
      .AddExpression("GlobalVariableChildCount",
                     _("Number of children"),
                     _("Number of children in a global array or "
                       "structure variable"),
-                     _("External variables ❯ Global variables ❯ Arrays and structures"),
+                     _("Global variables/Arrays and structures"),
                     "res/actions/var.png")
-      .AddParameter("globalvar", _("Array or structure variable"))
-      .SetHelpPath("/all-features/variables/structures-and-arrays/")
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Array or structure variable"));

  extension
      .AddExpression("VariableChildCount",
                     _("Number of children"),
                     _("Number of children in a scene array or "
                       "structure variable"),
-                     _("Arrays and structures"),
+                     _("Scene variables/Arrays and structures"),
                     "res/actions/var.png")
-      .AddParameter("variable", _("Array or structure variable"), "AllowUndeclaredVariable")
-      .SetHelpPath("/all-features/variables/structures-and-arrays/");
+      .AddParameter("scenevar", _("Array or structure variable"));

  extension
      .AddExpression("Variable",
                     _("Number variable"),
                     _("Number value of a scene variable"),
-                     _("External variables ❯ Scene variables"),
+                     _("Scene variables"),
                     "res/actions/var.png")
-      .AddParameter("scenevar", _("Variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Variable"));

  extension
      .AddStrExpression("VariableString",
                        _("Text variable"),
                        _("Text of a scene variable"),
-                        _("External variables ❯ Scene variables"),
+                        _("Scene variables"),
                        "res/actions/var.png")
-      .AddParameter("scenevar", _("Variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("scenevar", _("Variable"));

  extension
      .AddExpression("GlobalVariable",
                     _("Number variable"),
                     _("Number value of a global variable"),
-                     _("External variables ❯ Global variables"),
+                     _("Global variables"),
                     "res/actions/var.png")
-      .AddParameter("globalvar", _("Name of the global variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Name of the global variable"));

  extension
      .AddStrExpression("GlobalVariableString",
                        _("Text variable"),
                        _("Text of a global variable"),
-                        _("External variables ❯ Global variables"),
+                        _("Global variables"),
                        "res/actions/var.png")
-      .AddParameter("globalvar", _("Variable"))
-      .SetRelevantForFunctionEventsOnly()
-      .SetHidden();
+      .AddParameter("globalvar", _("Variable"));
 }

 }  // namespace gd
--- a/Core/GDCore/Extensions/Metadata/AbstractFunctionMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/AbstractFunctionMetadata.h
@@ -114,8 +114,6 @@ public:

  /**
   * \brief Erase any existing include file and add the specified include.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  virtual AbstractFunctionMetadata &
  SetIncludeFile(const gd::String &includeFile) = 0;
--- a/Core/GDCore/Extensions/Metadata/BehaviorMetadata.cpp
+++ b/Core/GDCore/Extensions/Metadata/BehaviorMetadata.cpp
@@ -13,15 +13,12 @@
 #include "GDCore/Extensions/PlatformExtension.h"
 #include "GDCore/Project/Behavior.h"
 #include "GDCore/Project/BehaviorsSharedData.h"
-#include "GDCore/Project/PropertyDescriptor.h"
 #include "GDCore/Tools/Localization.h"
 #include "GDCore/Tools/MakeUnique.h"
 #include "GDCore/Tools/Log.h"

 namespace gd {

-const std::map<gd::String, gd::PropertyDescriptor> BehaviorMetadata::badProperties;
-
 BehaviorMetadata::BehaviorMetadata(
    const gd::String& extensionNamespace_,
    const gd::String& nameWithNamespace,
@@ -50,14 +47,8 @@ BehaviorMetadata::BehaviorMetadata(
        "BehaviorMetadata is valid for: " + nameWithNamespace);
  }

-  if (instance) {
-    instance->SetTypeName(nameWithNamespace);
-    instance->InitializeContent();
-  }
-  if (sharedDatasInstance) {
-    sharedDatasInstance->SetTypeName(nameWithNamespace);
-    sharedDatasInstance->InitializeContent();
-  }
+  if (instance) instance->SetTypeName(nameWithNamespace);
+  if (sharedDatasInstance) sharedDatasInstance->SetTypeName(nameWithNamespace);
 }

 gd::InstructionMetadata& BehaviorMetadata::AddCondition(
@@ -414,44 +405,18 @@ gd::Behavior& BehaviorMetadata::Get() const {
  return *instance;
 }

-std::map<gd::String, gd::PropertyDescriptor> BehaviorMetadata::GetProperties() const {
-  if (!instance) {
-    return badProperties;
-  }
-  // TODO Properties should be declared on BehaviorMetadata directly.
-  // - Add 2 `properties` members (one for shared properties)
-  // - Add methods to declare new properties
-  return instance->GetProperties();
-}
-
-gd::BehaviorsSharedData* BehaviorMetadata::GetSharedDataInstance() const {
+gd::BehaviorsSharedData* BehaviorMetadata::GetSharedDataInstance() const { 
  return sharedDatasInstance.get();
 }

-std::map<gd::String, gd::PropertyDescriptor> BehaviorMetadata::GetSharedProperties() const {
-  if (!sharedDatasInstance) {
-    return badProperties;
-  }
-  // TODO Properties should be declared on BehaviorMetadata directly.
-  // - Add 2 `properties` members (one for shared properties)
-  // - Add methods to declare new properties
-  return sharedDatasInstance->GetProperties();
-}
-
 const std::vector<gd::String>& BehaviorMetadata::GetRequiredBehaviorTypes() const {
  requiredBehaviors.clear();
-  if (!instance) {
-    return requiredBehaviors;
-  }
-  for (auto& property : instance->GetProperties()) {
+  for (auto& property : Get().GetProperties()) {
    const String& propertyName = property.first;
    const gd::PropertyDescriptor& propertyDescriptor = property.second;

    if (propertyDescriptor.GetType() == "Behavior") {
-      const auto& extraInfos = propertyDescriptor.GetExtraInfo();
-      if (extraInfos.size() > 0) {
-        requiredBehaviors.push_back(extraInfos[0]);
-      }
+      requiredBehaviors.push_back(propertyDescriptor.GetExtraInfo()[0]);
    }
  }
  return requiredBehaviors;
--- a/Core/GDCore/Extensions/Metadata/BehaviorMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/BehaviorMetadata.h
@@ -12,14 +12,12 @@
 #include "GDCore/Extensions/Metadata/ExpressionMetadata.h"
 #include "GDCore/Extensions/Metadata/InstructionMetadata.h"
 #include "GDCore/String.h"
-#include "GDCore/Project/QuickCustomization.h"
 namespace gd {
 class Behavior;
 class BehaviorsSharedData;
 class MultipleInstructionMetadata;
 class InstructionMetadata;
 class ExpressionMetadata;
-class PropertyDescriptor;
 }  // namespace gd

 namespace gd {
@@ -42,10 +40,10 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
      const gd::String& className_,
      std::shared_ptr<gd::Behavior> instance,
      std::shared_ptr<gd::BehaviorsSharedData> sharedDatasInstance);
-
+      
  /**
   * \brief Construct a behavior metadata, without "blueprint" behavior.
-   *
+   * 
   * \note This is used by events based behaviors.
   */
  BehaviorMetadata(
@@ -206,8 +204,6 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
   * \brief Erase any existing include file and add the specified include.
   * \note The requirement may vary depending on the platform: Most of the time,
   * the include file contains the declaration of the behavior.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  BehaviorMetadata& SetIncludeFile(const gd::String& includeFile) override;

@@ -272,7 +268,7 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
   * Check if the behavior is private - it can't be used outside of its
   * extension.
   */
-  bool IsPrivate() const override { return isPrivate; }
+  bool IsPrivate() const { return isPrivate; }

  /**
   * Set that the behavior is private - it can't be used outside of its
@@ -298,59 +294,23 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
    return *this;
  }

-  QuickCustomization::Visibility GetQuickCustomizationVisibility() const {
-    return quickCustomizationVisibility;
-  }
-
-  BehaviorMetadata &SetQuickCustomizationVisibility(QuickCustomization::Visibility visibility) {
-    quickCustomizationVisibility = visibility;
-    return *this;
-  }
-
-  BehaviorMetadata &SetOpenFullEditorLabel(const gd::String& label) {
-    openFullEditorLabel = label;
-    return *this;
-  }
-
-  const gd::String& GetOpenFullEditorLabel() const {
-    return openFullEditorLabel;
-  }
-
  /**
   * \brief Return the associated gd::Behavior, handling behavior contents.
-   *
+   * 
   * \note Returns a dumb Behavior for events based behaviors as CustomBehavior
   * are using EventBasedBehavior.
   */
  gd::Behavior& Get() const;

-  /**
-   * \brief Called when the IDE wants to know about the custom properties of the
-   * behavior.
-   *
-   * \return a std::map with properties names as key.
-   * \see gd::PropertyDescriptor
-   */
-  std::map<gd::String, gd::PropertyDescriptor> GetProperties() const;
-
  /**
   * \brief Return the associated gd::BehaviorsSharedData, handling behavior
   * shared data, if any (nullptr if none).
-   *
+   * 
   * \note Returns nullptr for events based behaviors as they don't declare
   * shared data yet.
   */
  gd::BehaviorsSharedData* GetSharedDataInstance() const;

-  /**
-   * \brief Called when the IDE wants to know about the custom shared properties
-   * of the behavior.
-   *
-   * \return a std::map with properties names as key.
-   * \see gd::PropertyDescriptor
-   */
-  std::map<gd::String, gd::PropertyDescriptor> GetSharedProperties() const;
-
  /**
   * \brief Return a reference to a map containing the names of the actions
   * (as keys) and the metadata associated with (as values).
@@ -393,14 +353,10 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
  mutable std::vector<gd::String> requiredBehaviors;
  bool isPrivate = false;
  bool isHidden = false;
-  gd::String openFullEditorLabel;
-  QuickCustomization::Visibility quickCustomizationVisibility = QuickCustomization::Visibility::Default;

  // TODO: Nitpicking: convert these to std::unique_ptr to clarify ownership.
  std::shared_ptr<gd::Behavior> instance;
  std::shared_ptr<gd::BehaviorsSharedData> sharedDatasInstance;
-
-  static const std::map<gd::String, gd::PropertyDescriptor> badProperties;
 };

 }  // namespace gd
--- a/Core/GDCore/Extensions/Metadata/EffectMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/EffectMetadata.h
@@ -65,8 +65,6 @@ class GD_CORE_API EffectMetadata {

  /**
   * \brief Clear any existing include file and add the specified include file.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  EffectMetadata& SetIncludeFile(const gd::String& includeFile);

@@ -185,10 +183,10 @@ class GD_CORE_API EffectMetadata {
  gd::String fullname;
  gd::String description;
  std::vector<gd::String> includeFiles;
-  bool isMarkedAsNotWorkingForObjects = false;
-  bool isMarkedAsOnlyWorkingFor2D = false;
-  bool isMarkedAsOnlyWorkingFor3D = false;
-  bool isMarkedAsUnique = false;
+  bool isMarkedAsNotWorkingForObjects;
+  bool isMarkedAsOnlyWorkingFor2D;
+  bool isMarkedAsOnlyWorkingFor3D;
+  bool isMarkedAsUnique;
  std::map<gd::String, gd::PropertyDescriptor> properties;
 };

--- a/Core/GDCore/Extensions/Metadata/EventMetadata.cpp
+++ b/Core/GDCore/Extensions/Metadata/EventMetadata.cpp
@@ -19,8 +19,7 @@ EventMetadata::EventMetadata(const gd::String &name_,
    : fullname(fullname_),
      description(description_),
      group(group_),
-      instance(instance_),
-      hasCustomCodeGenerator(false) {
+      instance(instance_) {
  ClearCodeGenerationAndPreprocessing();
  if (instance) instance->SetType(name_);
 }
--- a/Core/GDCore/Extensions/Metadata/EventMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/EventMetadata.h
@@ -83,7 +83,7 @@ class GD_CORE_API EventMetadata {
  gd::String group;

  std::shared_ptr<gd::BaseEvent> instance;
-  bool hasCustomCodeGenerator = false;
+  bool hasCustomCodeGenerator;
  std::function<gd::String(gd::BaseEvent& event,
                           gd::EventsCodeGenerator& codeGenerator,
                           gd::EventsCodeGenerationContext& context)>
--- a/Core/GDCore/Extensions/Metadata/ExpressionMetadata.cpp
+++ b/Core/GDCore/Extensions/Metadata/ExpressionMetadata.cpp
@@ -38,12 +38,12 @@ gd::ExpressionMetadata& ExpressionMetadata::AddParameter(
    const gd::String& description,
    const gd::String& supplementaryInformation,
    bool parameterIsOptional) {
-  parameters.AddNewParameter("")
-  .SetType(type)
-  .SetDescription(description)
-  .SetCodeOnly(false)
-  .SetOptional(parameterIsOptional)
-  .SetExtraInfo(
+  gd::ParameterMetadata info;
+  info.SetType(type);
+  info.description = description;
+  info.codeOnly = false;
+  info.SetOptional(parameterIsOptional);
+  info.SetExtraInfo(
      // For objects/behavior, the supplementary information
      // parameter is an object/behavior type...
      ((gd::ParameterMetadata::IsObject(type) ||
@@ -59,16 +59,22 @@ gd::ExpressionMetadata& ExpressionMetadata::AddParameter(
  // TODO: Assert against supplementaryInformation === "emsc" (when running with
  // Emscripten), and warn about a missing argument when calling addParameter.

+  parameters.push_back(info);
  return *this;
 }

-gd::ExpressionMetadata &ExpressionMetadata::AddCodeOnlyParameter(
-    const gd::String &type, const gd::String &supplementaryInformation) {
-  parameters.AddNewParameter("").SetType(type).SetCodeOnly().SetExtraInfo(
-      supplementaryInformation);
+gd::ExpressionMetadata& ExpressionMetadata::AddCodeOnlyParameter(
+    const gd::String& type, const gd::String& supplementaryInformation) {
+  gd::ParameterMetadata info;
+  info.SetType(type);
+  info.codeOnly = true;
+  info.SetExtraInfo(supplementaryInformation);
+
+  parameters.push_back(info);
  return *this;
 }

+
 gd::ExpressionMetadata& ExpressionMetadata::SetRequiresBaseObjectCapability(
    const gd::String& capability) {
  requiredBaseObjectCapability = capability;
--- a/Core/GDCore/Extensions/Metadata/ExpressionMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/ExpressionMetadata.h
@@ -193,9 +193,8 @@ class GD_CORE_API ExpressionMetadata : public gd::AbstractFunctionMetadata {
   * \see AddParameter
   */
  ExpressionMetadata &SetDefaultValue(const gd::String &defaultValue) override {
-    if (parameters.GetParametersCount() > 0) {
-      parameters.GetInternalVector().back()->SetDefaultValue(defaultValue);
-    }
+    if (!parameters.empty())
+      parameters.back().SetDefaultValue(defaultValue);
    return *this;
  };

@@ -207,9 +206,8 @@ class GD_CORE_API ExpressionMetadata : public gd::AbstractFunctionMetadata {
   */
  ExpressionMetadata &
  SetParameterLongDescription(const gd::String &longDescription) override {
-    if (parameters.GetParametersCount() > 0) {
-      parameters.GetInternalVector().back()->SetLongDescription(longDescription);
-    }
+    if (!parameters.empty())
+      parameters.back().SetLongDescription(longDescription);
    return *this;
  };

@@ -222,9 +220,7 @@ class GD_CORE_API ExpressionMetadata : public gd::AbstractFunctionMetadata {
   */
  ExpressionMetadata &SetParameterExtraInfo(
      const gd::String &extraInfo) override {
-    if (parameters.GetParametersCount() > 0) {
-      parameters.GetInternalVector().back()->SetExtraInfo(extraInfo);
-    }
+    if (!parameters.empty()) parameters.back().SetExtraInfo(extraInfo);
    return *this;
  }

@@ -252,16 +248,19 @@ class GD_CORE_API ExpressionMetadata : public gd::AbstractFunctionMetadata {
  const gd::String& GetGroup() const { return group; }
  const gd::String& GetSmallIconFilename() const { return smallIconFilename; }
  const gd::ParameterMetadata& GetParameter(std::size_t id) const {
-    return parameters.GetParameter(id);
+    return parameters[id];
  };
  gd::ParameterMetadata& GetParameter(std::size_t id) {
-    return parameters.GetParameter(id);
+    return parameters[id];
  };
-  std::size_t GetParametersCount() const { return parameters.GetParametersCount(); };
-  const gd::ParameterMetadataContainer& GetParameters() const {
+  std::size_t GetParametersCount() const { return parameters.size(); };
+  const std::vector<gd::ParameterMetadata>& GetParameters() const {
    return parameters;
  };

+  std::vector<gd::ParameterMetadata> parameters;
+
+  
  /**
   * \brief Set the function name which will be used when generating the code.
   * \param functionName the name of the function to call
@@ -289,8 +288,6 @@ class GD_CORE_API ExpressionMetadata : public gd::AbstractFunctionMetadata {

  /**
   * \brief Erase any existing include file and add the specified include.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  ExpressionMetadata& SetIncludeFile(
      const gd::String& includeFile) override {
@@ -369,8 +366,6 @@ class GD_CORE_API ExpressionMetadata : public gd::AbstractFunctionMetadata {
  bool isPrivate;
  gd::String requiredBaseObjectCapability;
  gd::String relevantContext;
-
-  gd::ParameterMetadataContainer parameters;
 };

 }  // namespace gd
--- a/Core/GDCore/Extensions/Metadata/InstructionMetadata.cpp
+++ b/Core/GDCore/Extensions/Metadata/InstructionMetadata.cpp
@@ -9,7 +9,6 @@

 #include "GDCore/CommonTools.h"
 #include "GDCore/Extensions/PlatformExtension.h"
-#include "GDCore/Project/ParameterMetadataContainer.h"
 #include "GDCore/Serialization/SerializerElement.h"
 #include "GDCore/Tools/Localization.h"
 #include "GDCore/Tools/Log.h"
@@ -78,7 +77,7 @@ InstructionMetadata& InstructionMetadata::AddParameter(
  // TODO: Assert against supplementaryInformation === "emsc" (when running with
  // Emscripten), and warn about a missing argument when calling addParameter.

-  parameters.AddParameter(info);
+  parameters.push_back(info);
  return *this;
 }

@@ -89,7 +88,7 @@ InstructionMetadata& InstructionMetadata::AddCodeOnlyParameter(
  info.codeOnly = true;
  info.SetExtraInfo(supplementaryInformation);

-  parameters.AddParameter(info);
+  parameters.push_back(info);
  return *this;
 }

@@ -103,7 +102,7 @@ InstructionMetadata& InstructionMetadata::UseStandardOperatorParameters(
    AddParameter(
        "yesorno",
        options.description.empty() ? _("New value") : options.description);
-    size_t valueParamIndex = parameters.GetParametersCount() - 1;
+    size_t valueParamIndex = parameters.size() - 1;

    if (isObjectInstruction || isBehaviorInstruction) {
      gd::String templateSentence = _("Set _PARAM0_ as <subject>: <value>");
@@ -128,8 +127,8 @@ InstructionMetadata& InstructionMetadata::UseStandardOperatorParameters(
                 options.description.empty() ? _("Value") : options.description,
                 options.typeExtraInfo);

-    size_t operatorParamIndex = parameters.GetParametersCount() - 2;
-    size_t valueParamIndex = parameters.GetParametersCount() - 1;
+    size_t operatorParamIndex = parameters.size() - 2;
+    size_t valueParamIndex = parameters.size() - 1;

    if (isObjectInstruction || isBehaviorInstruction) {
      gd::String templateSentence = _("Change <subject> of _PARAM0_: <operator> <value>");
@@ -182,8 +181,8 @@ InstructionMetadata::UseStandardRelationalOperatorParameters(
    AddParameter(type,
                 options.description.empty() ? _("Value to compare") : options.description,
                 options.typeExtraInfo);
-    size_t operatorParamIndex = parameters.GetParametersCount() - 2;
-    size_t valueParamIndex = parameters.GetParametersCount() - 1;
+    size_t operatorParamIndex = parameters.size() - 2;
+    size_t valueParamIndex = parameters.size() - 1;

    if (isObjectInstruction || isBehaviorInstruction) {
      gd::String templateSentence = _("<subject> of _PARAM0_ <operator> <value>");
--- a/Core/GDCore/Extensions/Metadata/InstructionMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/InstructionMetadata.h
@@ -14,7 +14,6 @@
 #include <memory>

 #include "GDCore/Events/Instruction.h"
-#include "GDCore/Project/ParameterMetadataContainer.h"
 #include "GDCore/String.h"
 #include "ParameterMetadata.h"
 #include "ParameterOptions.h"
@@ -62,12 +61,12 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {
  const gd::String &GetDescription() const { return description; }
  const gd::String &GetSentence() const { return sentence; }
  const gd::String &GetGroup() const { return group; }
-  ParameterMetadata &GetParameter(size_t i) { return parameters.GetParameter(i); }
+  ParameterMetadata &GetParameter(size_t i) { return parameters[i]; }
  const ParameterMetadata &GetParameter(size_t i) const {
-    return parameters.GetParameter(i);
+    return parameters[i];
  }
-  size_t GetParametersCount() const { return parameters.GetParametersCount(); }
-  const ParameterMetadataContainer &GetParameters() const {
+  size_t GetParametersCount() const { return parameters.size(); }
+  const std::vector<ParameterMetadata> &GetParameters() const {
    return parameters;
  }
  const gd::String &GetIconFilename() const { return iconFilename; }
@@ -257,9 +256,7 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {
   * \see AddParameter
   */
  InstructionMetadata &SetDefaultValue(const gd::String &defaultValue_) override {
-    if (parameters.GetParametersCount() > 0) {
-      parameters.GetInternalVector().back()->SetDefaultValue(defaultValue_);
-    }
+    if (!parameters.empty()) parameters.back().SetDefaultValue(defaultValue_);
    return *this;
  };

@@ -271,9 +268,8 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {
   */
  InstructionMetadata &SetParameterLongDescription(
      const gd::String &longDescription) override {
-    if (parameters.GetParametersCount() > 0) {
-      parameters.GetInternalVector().back()->SetLongDescription(longDescription);
-    }
+    if (!parameters.empty())
+      parameters.back().SetLongDescription(longDescription);
    return *this;
  }

@@ -285,9 +281,7 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {
   * \see AddParameter
   */
  InstructionMetadata &SetParameterExtraInfo(const gd::String &extraInfo) override {
-    if (parameters.GetParametersCount() > 0) {
-      parameters.GetInternalVector().back()->SetExtraInfo(extraInfo);
-    }
+    if (!parameters.empty()) parameters.back().SetExtraInfo(extraInfo);
    return *this;
  }

@@ -462,15 +456,6 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {
    return *this;
  }

-/**
- * \brief Return the type manipulated in a standard way by the instruction.
- * 
- * \param type "number" or "string"
- */
-  const gd::String &GetManipulatedType() const {
-    return codeExtraInformation.type;
-  }
-
  /**
   * If InstructionMetadata::ExtraInformation::SetManipulatedType was called
   * with "number" or "string", this function will tell the code generator the
@@ -509,8 +494,6 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {

  /**
   * \brief Erase any existing include file and add the specified include.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  InstructionMetadata &SetIncludeFile(const gd::String &includeFile) override {
    codeExtraInformation.includeFiles.clear();
@@ -566,7 +549,7 @@ class GD_CORE_API InstructionMetadata : public gd::AbstractFunctionMetadata {
   */
  InstructionMetadata &GetCodeExtraInformation() { return *this; }

-  ParameterMetadataContainer parameters;
+  std::vector<ParameterMetadata> parameters;

 private:
  gd::String fullname;
--- a/Core/GDCore/Extensions/Metadata/InstructionOrExpressionContainerMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/InstructionOrExpressionContainerMetadata.h
@@ -142,8 +142,6 @@ public:
   * \brief Erase any existing include file and add the specified include.
   * \note The requirement may vary depending on the platform: Most of the time,
   * the include file contains the declaration of the behavior.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  virtual InstructionOrExpressionContainerMetadata &
  SetIncludeFile(const gd::String &includeFile) = 0;
@@ -174,7 +172,6 @@ public:
  virtual const gd::String &GetFullName() const = 0;
  virtual const gd::String &GetDescription() const = 0;
  virtual const gd::String &GetIconFilename() const = 0;
-  virtual bool IsPrivate() const = 0;

  /**
   * \brief Return a reference to a map containing the names of the actions
--- a/Core/GDCore/Extensions/Metadata/MetadataProvider.cpp
+++ b/Core/GDCore/Extensions/Metadata/MetadataProvider.cpp
@@ -454,12 +454,11 @@ const gd::ParameterMetadata* MetadataProvider::GetFunctionCallParameterMetadata(
      // TODO use a badMetadata instead of a nullptr?
      const gd::ParameterMetadata* parameterMetadata = nullptr;
      while (metadataParameterIndex <
-             metadata.GetParameters().GetParametersCount()) {
-        if (!metadata.GetParameters().GetParameter(metadataParameterIndex)
+             metadata.parameters.size()) {
+        if (!metadata.parameters[metadataParameterIndex]
                 .IsCodeOnly()) {
          if (visibleParameterIndex == parameterIndex) {
-            parameterMetadata =
-                &metadata.GetParameters().GetParameter(metadataParameterIndex);
+            parameterMetadata = &metadata.parameters[metadataParameterIndex];
          }
          visibleParameterIndex++;
        }
--- a/Core/GDCore/Extensions/Metadata/MetadataProvider.h
+++ b/Core/GDCore/Extensions/Metadata/MetadataProvider.h
@@ -288,8 +288,8 @@ class GD_CORE_API MetadataProvider {
  static EffectMetadata badEffectMetadata;
  static gd::InstructionMetadata badInstructionMetadata;
  static gd::ExpressionMetadata badExpressionMetadata;
-  int useless = 0;  // Useless member to avoid emscripten "must have a positive
-                    // integer typeid pointer" runtime error.
+  int useless;  // Useless member to avoid emscripten "must have a positive
+                // integer typeid pointer" runtime error.
 };

 }  // namespace gd
--- a/Core/GDCore/Extensions/Metadata/MultipleInstructionMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/MultipleInstructionMetadata.h
@@ -150,10 +150,6 @@ class GD_CORE_API MultipleInstructionMetadata : public AbstractFunctionMetadata
    return *this;
  }

-  /**
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
-   */
  MultipleInstructionMetadata &SetIncludeFile(const gd::String &includeFile) override {
    if (expression)
      expression->SetIncludeFile(includeFile);
--- a/Core/GDCore/Extensions/Metadata/ObjectMetadata.cpp
+++ b/Core/GDCore/Extensions/Metadata/ObjectMetadata.cpp
@@ -46,25 +46,30 @@ ObjectMetadata::ObjectMetadata(const gd::String& extensionNamespace_,
                               const gd::String& fullname_,
                               const gd::String& description_,
                               const gd::String& icon24x24)
-    : name(name_),
-      iconFilename(icon24x24),
-      extensionNamespace(extensionNamespace_) {
-  SetFullName(gd::String(fullname_));
-  SetDescription(gd::String(description_));
-}
+    : ObjectMetadata(extensionNamespace_,
+                     name_,
+                     fullname_,
+                     description_,
+                     icon24x24,
+                     []() -> std::unique_ptr<gd::ObjectConfiguration> {
+      gd::LogFatalError(
+          "Error: Event-based objects don't have blueprint. "
+          "This method should not never be called.");
+      return nullptr;
+    }) {}

 ObjectMetadata::ObjectMetadata(const gd::String& extensionNamespace_,
                               const gd::String& name_,
                               const gd::String& fullname_,
                               const gd::String& description_,
                               const gd::String& icon24x24,
-                               CreateFunPtr createFunPtr_)
-    : ObjectMetadata(extensionNamespace_,
-                     name_,
-                     fullname_,
-                     description_,
-                     icon24x24) {
-  createFunPtr = createFunPtr_;
+                               CreateFunPtr createFunPtrP)
+    : name(name_),
+      iconFilename(icon24x24),
+      createFunPtr(createFunPtrP),
+      extensionNamespace(extensionNamespace_) {
+  SetFullName(gd::String(fullname_));
+  SetDescription(gd::String(description_));
 }

 gd::InstructionMetadata& ObjectMetadata::AddCondition(
--- a/Core/GDCore/Extensions/Metadata/ObjectMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/ObjectMetadata.h
@@ -39,8 +39,6 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
  /**
   * \brief Construct an object metadata, using a "blueprint" object that will
   * be copied when a new object is requested.
-   *
-   * \note This is used for objects declared in JavaScript extensions.
   */
  ObjectMetadata(const gd::String& extensionNamespace_,
                 const gd::String& name_,
@@ -49,9 +47,9 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
                 const gd::String& icon24x24_,
                 std::shared_ptr<gd::ObjectConfiguration> blueprintObject_);
  /**
-   * \brief Construct an object metadata.
+   * \brief Construct an object metadata, without "blueprint" object
   *
-   * \note This is used by events based objects ("custom objects").
+   * \note This is used by events based objects.
   */
  ObjectMetadata(const gd::String& extensionNamespace_,
                 const gd::String& name_,
@@ -62,17 +60,14 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
  /**
   * \brief Construct an object metadata, with a function that will be called
   * to instantiate a new object.
-   *
-   * \note This is used for objects declared in C++ extensions.
   */
  ObjectMetadata(const gd::String& extensionNamespace_,
                 const gd::String& name_,
                 const gd::String& fullname_,
                 const gd::String& description_,
                 const gd::String& icon24x24_,
-                 CreateFunPtr createFunPtr_);
-
-  ObjectMetadata() {}
+                 CreateFunPtr createFunPtrP);
+  ObjectMetadata() : createFunPtr(NULL) {}
  virtual ~ObjectMetadata(){};

  /**
@@ -251,11 +246,6 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
    return *this;
  }

-  ObjectMetadata& ResetDefaultBehaviorsJustForTesting() {
-    defaultBehaviorTypes.clear();
-    return *this;
-  }
-
  const gd::String& GetName() const override { return name; }
  const gd::String& GetFullName() const override { return fullname; }
  const gd::String& GetCategoryFullName() const { return categoryFullName; }
@@ -274,8 +264,6 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
   * \brief Erase any existing include file and add the specified include.
   * \note The requirement may vary depending on the platform: Most of the time,
   * the include file contains the declaration of the object.
-   * \deprecated Use `AddIncludeFile` instead as clearing the list is more
-   * error prone.
   */
  ObjectMetadata& SetIncludeFile(const gd::String& includeFile) override;

@@ -305,22 +293,6 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
   */
  std::map<gd::String, gd::ExpressionMetadata>& GetAllStrExpressions() override { return strExpressionsInfos; };

-
-  /**
-   * Check if the behavior is private - it can't be used outside of its
-   * extension.
-   */
-  bool IsPrivate() const override { return isPrivate; }
-
-  /**
-   * Set that the behavior is private - it can't be used outside of its
-   * extension.
-   */
-  ObjectMetadata &SetPrivate() {
-    isPrivate = true;
-    return *this;
-  }
-
  /**
   * \brief Set the object to be hidden in the IDE.
   *
@@ -349,15 +321,6 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
   */
  bool IsRenderedIn3D() const { return isRenderedIn3D; }

-  ObjectMetadata &SetOpenFullEditorLabel(const gd::String& label) {
-    openFullEditorLabel = label;
-    return *this;
-  }
-
-  const gd::String& GetOpenFullEditorLabel() const {
-    return openFullEditorLabel;
-  }
-
  std::map<gd::String, gd::InstructionMetadata> conditionsInfos;
  std::map<gd::String, gd::InstructionMetadata> actionsInfos;
  std::map<gd::String, gd::ExpressionMetadata> expressionsInfos;
@@ -365,7 +328,7 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada

  std::vector<gd::String> includeFiles;
  gd::String className;
-  CreateFunPtr createFunPtr = nullptr;
+  CreateFunPtr createFunPtr;

 private:
  gd::String extensionNamespace;
@@ -377,10 +340,8 @@ class GD_CORE_API ObjectMetadata : public InstructionOrExpressionContainerMetada
  gd::String iconFilename;
  gd::String categoryFullName;
  std::set<gd::String> defaultBehaviorTypes;
-  bool isPrivate = false;
  bool hidden = false;
  bool isRenderedIn3D = false;
-  gd::String openFullEditorLabel;

  std::shared_ptr<gd::ObjectConfiguration>
      blueprintObject;  ///< The "blueprint" object to be copied when a new
--- a/Core/GDCore/Extensions/Metadata/ParameterMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/ParameterMetadata.h
@@ -4,8 +4,8 @@
 * reserved. This project is released under the MIT License.
 */

-#pragma once
-
+#ifndef PARAMETER_METADATA_H
+#define PARAMETER_METADATA_H
 #include <map>
 #include <memory>

@@ -29,12 +29,6 @@ class GD_CORE_API ParameterMetadata {
  ParameterMetadata();
  virtual ~ParameterMetadata(){};

-  /**
-   * \brief Return a pointer to a new ParameterMetadata constructed from
-   * this one.
-   */
-  ParameterMetadata* Clone() const { return new ParameterMetadata(*this); };
-
  /**
   * \brief Return the metadata of the parameter type.
   */
@@ -254,3 +248,5 @@ class GD_CORE_API ParameterMetadata {
 };

 }  // namespace gd
+
+#endif  // PARAMETER_METADATA_H
--- a/Core/GDCore/Extensions/Metadata/ParameterMetadataTools.cpp
+++ b/Core/GDCore/Extensions/Metadata/ParameterMetadataTools.cpp
@@ -6,157 +6,86 @@
 #include "ParameterMetadataTools.h"

 #include "GDCore/Events/Expression.h"
-#include "GDCore/Events/Parsers/ExpressionParser2.h"
-#include "GDCore/Events/Parsers/ExpressionParser2NodePrinter.h"
 #include "GDCore/Project/Object.h"
 #include "GDCore/Project/ObjectsContainer.h"
 #include "GDCore/Project/ObjectsContainersList.h"
-#include "GDCore/Project/ParameterMetadataContainer.h"
 #include "GDCore/Project/Project.h"
 #include "GDCore/String.h"
 #include "InstructionMetadata.h"
+#include "GDCore/Events/Parsers/ExpressionParser2.h"
+#include "GDCore/Events/Parsers/ExpressionParser2NodePrinter.h"

 namespace gd {
 const ParameterMetadata ParameterMetadataTools::badParameterMetadata;

 void ParameterMetadataTools::ParametersToObjectsContainer(
    const gd::Project& project,
-    const ParameterMetadataContainer& parameters,
+    const std::vector<gd::ParameterMetadata>& parameters,
    gd::ObjectsContainer& outputObjectsContainer) {
-  // Keep track of all objects and their behaviors names, so we can remove
-  // those who are in the container but not in the parameters anymore.
-  std::set<gd::String> allObjectNames;
-  std::map<gd::String, std::set<gd::String>> allObjectNonDefaultBehaviorNames;
+  outputObjectsContainer.GetObjects().clear();

  gd::String lastObjectName;
-  for (std::size_t i = 0; i < parameters.GetParametersCount(); ++i) {
-    const auto& parameter = parameters.GetParameter(i);
+  for (std::size_t i = 0; i < parameters.size(); ++i) {
+    const auto& parameter = parameters[i];
    if (parameter.GetName().empty()) continue;

-    auto &valueTypeMetadata = parameter.GetValueTypeMetadata();
-    if (valueTypeMetadata.IsObject()) {
-      const gd::String& objectName = parameter.GetName();
-      const gd::String& objectType = parameter.GetExtraInfo();
-      allObjectNames.insert(objectName);
-
-      // Check if we can keep the existing object.
-      if (outputObjectsContainer.HasObjectNamed(objectName)) {
-        const gd::Object& object = outputObjectsContainer.GetObject(objectName);
-
-        if (object.GetType() != objectType) {
-          // Object type has changed, remove it so it is re-created.
-          outputObjectsContainer.RemoveObject(objectName);
-        }
-      }
-
-      if (outputObjectsContainer.HasObjectNamed(objectName)) {
-        // Keep the existing object, ensure the default behaviors
-        // are all present (and no more than required by the object type).
-        // Non default behaviors coming from parameters will be added or removed later.
-        project.EnsureObjectDefaultBehaviors(outputObjectsContainer.GetObject(objectName));
-      } else {
-        // Create a new object (and its default behaviors) if needed.
-        outputObjectsContainer.InsertNewObject(
-            project,
-            objectType,
-            objectName,
-            outputObjectsContainer.GetObjectsCount());
-      }
+    if (gd::ParameterMetadata::IsObject(parameter.GetType())) {
+      outputObjectsContainer.InsertNewObject(
+          project,
+          parameter.GetExtraInfo(),
+          parameter.GetName(),
+          outputObjectsContainer.GetObjectsCount());

      // Memorize the last object name. By convention, parameters that require
      // an object (mainly, "objectvar" and "behavior") should be placed after
      // the object in the list of parameters (if possible, just after).
      // Search "lastObjectName" in the codebase for other place where this
      // convention is enforced.
-      lastObjectName = objectName;
-    } else if (valueTypeMetadata.IsBehavior()) {
+      lastObjectName = parameter.GetName();
+    } else if (gd::ParameterMetadata::IsBehavior(parameter.GetType())) {
      if (!lastObjectName.empty()) {
        if (outputObjectsContainer.HasObjectNamed(lastObjectName)) {
-          const gd::String& behaviorName = parameter.GetName();
-          const gd::String& behaviorType = parameter.GetExtraInfo();
-
-          gd::Object& object = outputObjectsContainer.GetObject(lastObjectName);
-          allObjectNonDefaultBehaviorNames[lastObjectName].insert(behaviorName);
-
-          // Check if we can keep the existing behavior.
-          if (object.HasBehaviorNamed(behaviorName)) {
-            if (object.GetBehavior(behaviorName).GetTypeName() !=
-                behaviorType) {
-              // Behavior type has changed, remove it so it is re-created.
-              object.RemoveBehavior(behaviorName);
-            }
-          }
+          const gd::Object& object =
+              outputObjectsContainer.GetObject(lastObjectName);
+          gd::String behaviorName = parameter.GetName();

          if (!object.HasBehaviorNamed(behaviorName)) {
-            object.AddNewBehavior(
-                project, parameter.GetExtraInfo(), behaviorName);
+            outputObjectsContainer.GetObject(lastObjectName)
+                .AddNewBehavior(
+                    project, parameter.GetExtraInfo(), behaviorName);
          }
        }
      }
    }
  }
-
-  // Remove objects that are not in the parameters anymore.
-  std::set<gd::String> objectNamesInContainer =
-      outputObjectsContainer.GetAllObjectNames();
-  for (const auto& objectName : objectNamesInContainer) {
-    if (allObjectNames.find(objectName) == allObjectNames.end()) {
-      outputObjectsContainer.RemoveObject(objectName);
-    }
-  }
-
-  // Remove behaviors of objects that are not in the parameters anymore.
-  for (const auto& objectName : allObjectNames) {
-    if (!outputObjectsContainer.HasObjectNamed(objectName)) {
-      // Should not happen.
-      continue;
-    }
-
-    auto& object = outputObjectsContainer.GetObject(objectName);
-    const auto& allBehaviorNames = allObjectNonDefaultBehaviorNames[objectName];
-    for (const auto& behaviorName : object.GetAllBehaviorNames()) {
-      if (object.GetBehavior(behaviorName).IsDefaultBehavior()) {
-        // Default behaviors are already ensured to be all present
-        // (and no more than required by the object type).
-        continue;
-      }
-
-      if (allBehaviorNames.find(behaviorName) == allBehaviorNames.end()) {
-        object.RemoveBehavior(behaviorName);
-      }
-    }
-  }
 }

 void ParameterMetadataTools::ForEachParameterMatchingSearch(
-    const std::vector<const ParameterMetadataContainer*>&
+    const std::vector<const std::vector<gd::ParameterMetadata>*>&
        parametersVectorsList,
    const gd::String& search,
    std::function<void(const gd::ParameterMetadata&)> cb) {
  for (auto it = parametersVectorsList.rbegin();
       it != parametersVectorsList.rend();
       ++it) {
-    const ParameterMetadataContainer* parametersVector = *it;
+    const std::vector<gd::ParameterMetadata>* parametersVector = *it;

-    for (const auto &parameterMetadata :
-         parametersVector->GetInternalVector()) {
-      if (parameterMetadata->GetName().FindCaseInsensitive(search) !=
-          gd::String::npos)
-        cb(*parameterMetadata);
+    for (const auto& parameterMetadata: *parametersVector) {
+      if (parameterMetadata.GetName().FindCaseInsensitive(search) != gd::String::npos) cb(parameterMetadata);
    }
  }
 }

 bool ParameterMetadataTools::Has(
-      const std::vector<const ParameterMetadataContainer*>& parametersVectorsList,
+      const std::vector<const std::vector<gd::ParameterMetadata>*>& parametersVectorsList,
      const gd::String& parameterName) {
  for (auto it = parametersVectorsList.rbegin();
       it != parametersVectorsList.rend();
       ++it) {
-    const ParameterMetadataContainer* parametersVector = *it;
+    const std::vector<gd::ParameterMetadata>* parametersVector = *it;

-    for (const auto& parameterMetadata: parametersVector->GetInternalVector()) {
-      if (parameterMetadata->GetName() == parameterName) return true;
+    for (const auto& parameterMetadata: *parametersVector) {
+      if (parameterMetadata.GetName() == parameterName) return true;
    }
  }

@@ -164,18 +93,16 @@ bool ParameterMetadataTools::Has(
 }

 const gd::ParameterMetadata& ParameterMetadataTools::Get(
-    const std::vector<const ParameterMetadataContainer*>&
+    const std::vector<const std::vector<gd::ParameterMetadata>*>&
        parametersVectorsList,
    const gd::String& parameterName) {
  for (auto it = parametersVectorsList.rbegin();
       it != parametersVectorsList.rend();
       ++it) {
-    const ParameterMetadataContainer* parametersVector = *it;
+    const std::vector<gd::ParameterMetadata>* parametersVector = *it;

-    for (const auto &parameterMetadata :
-         parametersVector->GetInternalVector()) {
-      if (parameterMetadata->GetName() == parameterName)
-        return *parameterMetadata;
+    for (const auto& parameterMetadata: *parametersVector) {
+      if (parameterMetadata.GetName() == parameterName) return parameterMetadata;
    }
  }

@@ -184,7 +111,7 @@ const gd::ParameterMetadata& ParameterMetadataTools::Get(

 void ParameterMetadataTools::IterateOverParameters(
    const std::vector<gd::Expression>& parameters,
-    const ParameterMetadataContainer& parametersMetadata,
+    const std::vector<gd::ParameterMetadata>& parametersMetadata,
    std::function<void(const gd::ParameterMetadata& parameterMetadata,
                       const gd::Expression& parameterValue,
                       const gd::String& lastObjectName)> fn) {
@@ -201,17 +128,15 @@ void ParameterMetadataTools::IterateOverParameters(

 void ParameterMetadataTools::IterateOverParametersWithIndex(
    const std::vector<gd::Expression>& parameters,
-    const ParameterMetadataContainer& parametersMetadata,
+    const std::vector<gd::ParameterMetadata>& parametersMetadata,
    std::function<void(const gd::ParameterMetadata& parameterMetadata,
                       const gd::Expression& parameterValue,
                       size_t parameterIndex,
                       const gd::String& lastObjectName)> fn) {
  gd::String lastObjectName = "";
-  for (std::size_t pNb = 0; pNb < parametersMetadata.GetParametersCount();
-       ++pNb) {
-    const gd::ParameterMetadata &parameterMetadata =
-        parametersMetadata.GetParameter(pNb);
-    const gd::Expression &parameterValue =
+  for (std::size_t pNb = 0; pNb < parametersMetadata.size(); ++pNb) {
+    const gd::ParameterMetadata& parameterMetadata = parametersMetadata[pNb];
+    const gd::Expression& parameterValue =
        pNb < parameters.size() ? parameters[pNb].GetPlainString() : "";
    const gd::Expression& parameterValueOrDefault =
        parameterValue.GetPlainString().empty() && parameterMetadata.IsOptional()
@@ -254,10 +179,10 @@ void ParameterMetadataTools::IterateOverParametersWithIndex(

  size_t parameterIndex = 0;
  for (size_t metadataIndex = (isObjectFunction ? 1 : 0);
-       metadataIndex < metadata.GetParameters().GetParametersCount() &&
+       metadataIndex < metadata.parameters.size() &&
       parameterIndex < node.parameters.size();
       ++metadataIndex) {
-    auto &parameterMetadata = metadata.GetParameters().GetParameter(metadataIndex);
+    auto &parameterMetadata = metadata.parameters[metadataIndex];
    if (parameterMetadata.IsCodeOnly()) {
      continue;
    }
@@ -279,17 +204,16 @@ void ParameterMetadataTools::IterateOverParametersWithIndex(
 }

 size_t ParameterMetadataTools::GetObjectParameterIndexFor(
-    const ParameterMetadataContainer& parametersMetadata,
+    const std::vector<gd::ParameterMetadata>& parametersMetadata,
    size_t parameterIndex) {
  // By convention, parameters that require
  // an object (mainly, "objectvar" and "behavior") should be placed after
  // the object in the list of parameters (if possible, just after).
  // Search "lastObjectName" in the codebase for other place where this
  // convention is enforced.
-  for (std::size_t pNb = parameterIndex;
-       pNb < parametersMetadata.GetParametersCount(); pNb--) {
-    if (gd::ParameterMetadata::IsObject(
-            parametersMetadata.GetParameter(pNb).GetType())) {
+  for (std::size_t pNb = parameterIndex; pNb < parametersMetadata.size();
+       pNb--) {
+    if (gd::ParameterMetadata::IsObject(parametersMetadata[pNb].GetType())) {
      return pNb;
    }
  }
--- a/Core/GDCore/Extensions/Metadata/ParameterMetadataTools.h
+++ b/Core/GDCore/Extensions/Metadata/ParameterMetadataTools.h
@@ -15,7 +15,6 @@ class ObjectsContainer;
 class ObjectsContainersList;
 class ParameterMetadata;
 class Expression;
-class ParameterMetadataContainer;
 struct FunctionCallNode;
 struct ExpressionNode;
 }  // namespace gd
@@ -25,20 +24,20 @@ class GD_CORE_API ParameterMetadataTools {
 public:
  static void ParametersToObjectsContainer(
      const gd::Project& project,
-      const ParameterMetadataContainer& parameters,
+      const std::vector<gd::ParameterMetadata>& parameters,
      gd::ObjectsContainer& outputObjectsContainer);

  static void ForEachParameterMatchingSearch(
-      const std::vector<const ParameterMetadataContainer*>& parametersVectorsList,
+      const std::vector<const std::vector<gd::ParameterMetadata>*>& parametersVectorsList,
      const gd::String& search,
      std::function<void(const gd::ParameterMetadata&)> cb);

  static bool Has(
-      const std::vector<const ParameterMetadataContainer*>& parametersVectorsList,
+      const std::vector<const std::vector<gd::ParameterMetadata>*>& parametersVectorsList,
      const gd::String& parameterName);

  static const gd::ParameterMetadata& Get(
-      const std::vector<const ParameterMetadataContainer*>& parametersVectorsList,
+      const std::vector<const std::vector<gd::ParameterMetadata>*>& parametersVectorsList,
      const gd::String& parameterName);

  /**
@@ -48,7 +47,7 @@ class GD_CORE_API ParameterMetadataTools {
   */
  static void IterateOverParameters(
      const std::vector<gd::Expression>& parameters,
-      const ParameterMetadataContainer& parametersMetadata,
+      const std::vector<gd::ParameterMetadata>& parametersMetadata,
      std::function<void(const gd::ParameterMetadata& parameterMetadata,
                         const gd::Expression& parameterValue,
                         const gd::String& lastObjectName)> fn);
@@ -60,7 +59,7 @@ class GD_CORE_API ParameterMetadataTools {
   */
  static void IterateOverParametersWithIndex(
      const std::vector<gd::Expression>& parameters,
-      const ParameterMetadataContainer& parametersMetadata,
+      const std::vector<gd::ParameterMetadata>& parametersMetadata,
      std::function<void(const gd::ParameterMetadata& parameterMetadata,
                         const gd::Expression& parameterValue,
                         size_t parameterIndex,
@@ -85,7 +84,7 @@ class GD_CORE_API ParameterMetadataTools {
   * it's linked to.
   */
  static size_t GetObjectParameterIndexFor(
-      const ParameterMetadataContainer& parametersMetadata,
+      const std::vector<gd::ParameterMetadata>& parametersMetadata,
      size_t parameterIndex);

 private:
--- a/Core/GDCore/Extensions/Metadata/SourceFileMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/SourceFileMetadata.h
@@ -1,56 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#pragma once
-#include "GDCore/String.h"
-#include "GDCore/Serialization/SerializerElement.h"
-
-namespace gd {
-/**
- * \brief Contains information about a source file that must be included
- * when an extension is used.
- */
-class GD_CORE_API SourceFileMetadata {
- public:
-  /**
-   * Construct a new dependency metadata, though you probably want to call
-   * `AddSourceFile` on gd::PlatformExtension.
-   *
-   * \see gd::PlatformExtension
-   */
-  SourceFileMetadata() {};
-
-  SourceFileMetadata& SetResourceName(const gd::String& resourceName_) {
-    resourceName = resourceName_;
-    return *this;
-  };
-
-  SourceFileMetadata& SetIncludePosition(const gd::String& includePosition_) {
-    includePosition = includePosition_;
-    return *this;
-  };
-
-  const gd::String& GetResourceName() const { return resourceName; };
-
-  gd::String& GetResourceName() { return resourceName; };
-
-  const gd::String& GetIncludePosition() const { return includePosition; };
-
-  void SerializeTo(SerializerElement& element) const {
-    element.AddChild("resourceName").SetStringValue(resourceName);
-    element.AddChild("includePosition").SetStringValue(includePosition);
-  }
-
-  void UnserializeFrom(const SerializerElement& element) {
-    resourceName = element.GetStringAttribute("resourceName");
-    includePosition = element.GetStringAttribute("includePosition", "last");
-  }
-
- private:
-  gd::String resourceName;  ///< The name of the resource in the project.
-  gd::String includePosition = "last";  ///< "first" or "last".
-};
-
-}  // namespace gd
--- a/Core/GDCore/Extensions/Metadata/ValueTypeMetadata.cpp
+++ b/Core/GDCore/Extensions/Metadata/ValueTypeMetadata.cpp
@@ -53,34 +53,27 @@ const gd::String &ValueTypeMetadata::GetExpressionPrimitiveValueType(

 const gd::String &
 ValueTypeMetadata::GetPrimitiveValueType(const gd::String &parameterType) {
-  if (parameterType == "number" ||
-      gd::ValueTypeMetadata::IsTypeValue("number", parameterType)) {
-    return ValueTypeMetadata::numberType;
-  }
-  if (parameterType == "string" ||
-      gd::ValueTypeMetadata::IsTypeValue("string", parameterType)) {
-    return ValueTypeMetadata::stringType;
-  }
  if (parameterType == "variable" ||
-      gd::ValueTypeMetadata::IsTypeValue("variable", parameterType)) {
+      gd::ValueTypeMetadata::IsTypeExpression("variable", parameterType)) {
    return ValueTypeMetadata::variableType;
  }
-  if (parameterType == "boolean" ||
-      gd::ValueTypeMetadata::IsTypeValue("boolean", parameterType)) {
+  if (parameterType == "boolean" || parameterType == "yesorno" ||
+      parameterType == "trueorfalse") {
    return ValueTypeMetadata::booleanType;
  }
-  return parameterType;
+  // These 2 types are not strings from the code generator point of view,
+  // but it is for event-based extensions.
+  if (parameterType == "key" || parameterType == "mouse") {
+    return ValueTypeMetadata::stringType;
+  }
+  return GetExpressionPrimitiveValueType(parameterType);
 }

 const gd::String ValueTypeMetadata::numberValueType = "number";
 const gd::String ValueTypeMetadata::booleanValueType = "boolean";
-const gd::String ValueTypeMetadata::stringValueType = "string";
 const gd::String ValueTypeMetadata::colorValueType = "color";
 const gd::String ValueTypeMetadata::choiceValueType = "stringWithSelector";
-const gd::String ValueTypeMetadata::behaviorValueType = "behavior";
-const gd::String ValueTypeMetadata::leaderboardIdValueType = "leaderboardId";
-const gd::String ValueTypeMetadata::objectAnimationNameValueType = "objectAnimationName";
-const gd::String ValueTypeMetadata::keyboardKeyValueType = "keyboardKey";
+const gd::String ValueTypeMetadata::stringValueType = "string";

 const gd::String &ValueTypeMetadata::ConvertPropertyTypeToValueType(
    const gd::String &propertyType) {
@@ -92,16 +85,8 @@ const gd::String &ValueTypeMetadata::ConvertPropertyTypeToValueType(
    return colorValueType;
  } else if (propertyType == "Choice") {
    return choiceValueType;
-  } else if (propertyType == "Behavior") {
-    return behaviorValueType;
-  } else if (propertyType == "LeaderboardId") {
-    return leaderboardIdValueType;
-  } else if (propertyType == "ObjectAnimationName") {
-    return objectAnimationNameValueType;
-  } else if (propertyType == "KeyboardKey") {
-    return keyboardKeyValueType;
  }
-  // For "String", "Resource", "MultilineString" or default
+  // For "String" or default
  return stringValueType;
 };

--- a/Core/GDCore/Extensions/Metadata/ValueTypeMetadata.h
+++ b/Core/GDCore/Extensions/Metadata/ValueTypeMetadata.h
@@ -111,54 +111,31 @@ class GD_CORE_API ValueTypeMetadata {
   * given type.
   */
  bool IsNumber() const {
-    return gd::ValueTypeMetadata::IsTypeValue("number", name);
+    return gd::ValueTypeMetadata::IsTypeExpression("number", name);
  }

  /**
   * \brief Return true if the type is a string.
   */
  bool IsString() const {
-    return gd::ValueTypeMetadata::IsTypeValue("string", name);
+    return gd::ValueTypeMetadata::IsTypeExpression("string", name);
  }

  /**
   * \brief Return true if the type is a boolean.
   */
  bool IsBoolean() const {
-    return gd::ValueTypeMetadata::IsTypeValue("boolean", name);
+    return gd::ValueTypeMetadata::IsTypeExpression("boolean", name);
  }

  /**
-   * \brief Return true if the type of the parameter is a variable.
+   * \brief Return true if the type of the parameter is a number.
   * \note If you had a new type of parameter, also add it in the IDE (
   * see EventsFunctionParametersEditor, ParameterRenderingService
   * and ExpressionAutocompletion) and in the EventsCodeGenerator.
   */
  bool IsVariable() const {
-    return gd::ValueTypeMetadata::IsVariable(name);
-  }
-
-  /**
-   * \brief Return true if the type of the parameter is a variable.
-   * \note If you had a new type of parameter, also add it in the IDE (
-   * see EventsFunctionParametersEditor, ParameterRenderingService
-   * and ExpressionAutocompletion) and in the EventsCodeGenerator.
-   */
-  static bool IsVariable(const gd::String &type) {
-    return gd::ValueTypeMetadata::GetPrimitiveValueType(type) == "variable";
-  }
-
-  /**
-   * \brief Return true if the type of the parameter is a variable and not a
-   * property or a parameter.
-   */
-  bool IsVariableOnly() const {
-      return
-          // Any variable.
-          name == "variable" ||
-          // Old, "pre-scoped" variables:
-          name == "objectvar" || name == "globalvar" ||
-          name == "scenevar";
+    return gd::ValueTypeMetadata::IsTypeExpression("variable", name);
  }

  /**
@@ -198,9 +175,7 @@ class GD_CORE_API ValueTypeMetadata {
  }

  /**
-   * \brief Return true if the type is an expression of the given type from the
-   * caller point of view.
-   *
+   * \brief Return true if the type is an expression of the given type.
   * \note If you are adding a new type of parameter, also add it in the IDE (
   * see EventsFunctionParametersEditor, ParameterRenderingService
   * and ExpressionAutocompletion) and in the EventsCodeGenerator.
@@ -211,7 +186,6 @@ class GD_CORE_API ValueTypeMetadata {
      return parameterType == "number" || parameterType == "expression" ||
             parameterType == "camera" || parameterType == "forceMultiplier";
    } else if (type == "string") {
-      // "key" and "mouse" are not mapped her, see GetPrimitiveValueType.
      return parameterType == "string" || parameterType == "layer" ||
             parameterType == "color" || parameterType == "file" ||
             parameterType == "stringWithSelector" ||
@@ -225,24 +199,19 @@ class GD_CORE_API ValueTypeMetadata {
             parameterType == "functionParameterName" ||
             parameterType == "externalLayoutName" ||
             parameterType == "leaderboardId" ||
-             parameterType == "keyboardKey" ||
-             parameterType == "mouseButton" ||
             parameterType == "identifier";
    } else if (type == "boolean") {
      return parameterType == "yesorno" || parameterType == "trueorfalse";
    } else if (type == "variable") {
      return
-          // Any variable.
-          parameterType == "variable" ||
-          parameterType == "variableOrProperty" ||
-          parameterType == "variableOrPropertyOrParameter" ||
-          // Old, "pre-scoped" variables:
-          parameterType == "objectvar" || parameterType == "globalvar" ||
-          parameterType == "scenevar";
+             parameterType == "variable" || // Any variable.
+             // Old, "pre-scoped" variables:
+             parameterType == "objectvar" || parameterType == "globalvar" ||
+             parameterType == "scenevar";
    } else if (type == "resource") {
      return parameterType == "fontResource" ||
-             parameterType == "audioResource" ||
-             parameterType == "videoResource" ||
+             parameterType == "soundfile" ||
+             parameterType == "musicfile" ||
             parameterType == "bitmapFontResource" ||
             parameterType == "imageResource" ||
             parameterType == "jsonResource" ||
@@ -250,30 +219,7 @@ class GD_CORE_API ValueTypeMetadata {
             parameterType == "tilesetResource" ||
             parameterType == "model3DResource" ||
             parameterType == "atlasResource" ||
-             parameterType == "spineResource" ||
-             // Deprecated, old parameter types:
-             parameterType == "soundfile" ||
-             parameterType == "musicfile";
-    }
-    return false;
-  }
-
-  /**
-   * \brief Return true if the type is a value of the given primitive type from
-   * the function events point of view
-   */
-  static bool IsTypeValue(const gd::String &type,
-                           const gd::String &parameterType) {
-    if (gd::ValueTypeMetadata::IsTypeExpression(type, parameterType)) {
-      return true;
-    }
-    // These 2 parameter types are not strings from the outside of a function as
-    // the generator add quote around a text, but from the events inside of the
-    // function the parameter is a string.
-    //
-    // See EventsCodeGenerator::GenerateParameterCodes
-    if (type == "string") {
-      return parameterType == "key" || parameterType == "mouse";
+             parameterType == "spineResource";
    }
    return false;
  }
@@ -329,13 +275,9 @@ class GD_CORE_API ValueTypeMetadata {

  static const gd::String numberValueType;
  static const gd::String booleanValueType;
-  static const gd::String stringValueType;
  static const gd::String colorValueType;
  static const gd::String choiceValueType;
-  static const gd::String behaviorValueType;
-  static const gd::String leaderboardIdValueType;
-  static const gd::String objectAnimationNameValueType;
-  static const gd::String keyboardKeyValueType;
+  static const gd::String stringValueType;
 };

 }  // namespace gd
--- a/Core/GDCore/Extensions/Platform.cpp
+++ b/Core/GDCore/Extensions/Platform.cpp
@@ -38,14 +38,12 @@ bool Platform::AddExtension(std::shared_ptr<gd::PlatformExtension> extension) {

  extensionsLoaded.push_back(extension);

-  // Load all creation functions for objects provided by the
-  // extension.
+  // Load all creation/destruction functions for objects provided by the
+  // extension
  vector<gd::String> objectsTypes = extension->GetExtensionObjectsTypes();
  for (std::size_t i = 0; i < objectsTypes.size(); ++i) {
-    CreateFunPtr createFunPtr = extension->GetObjectCreationFunctionPtr(objectsTypes[i]);
-    if (createFunPtr != nullptr) {
-      creationFunctionTable[objectsTypes[i]] = createFunPtr;
-    }
+    creationFunctionTable[objectsTypes[i]] =
+        extension->GetObjectCreationFunctionPtr(objectsTypes[i]);
  }

  for (const auto& it :
@@ -64,9 +62,7 @@ void Platform::RemoveExtension(const gd::String& name) {
    if (extension->GetName() == name) {
      vector<gd::String> objectsTypes = extension->GetExtensionObjectsTypes();
      for (std::size_t i = 0; i < objectsTypes.size(); ++i) {
-        if (creationFunctionTable.find(objectsTypes[i]) != creationFunctionTable.end()) {
-          creationFunctionTable.erase(objectsTypes[i]);
-        }
+        creationFunctionTable.erase(objectsTypes[i]);
      }
    }
  }
@@ -100,11 +96,11 @@ std::shared_ptr<gd::PlatformExtension> Platform::GetExtension(
 std::unique_ptr<gd::ObjectConfiguration> Platform::CreateObjectConfiguration(
    gd::String type) const {
  if (creationFunctionTable.find(type) == creationFunctionTable.end()) {
-    gd::LogWarning("Tried to create an object configuration with an unknown type: " + type
+    gd::LogWarning("Tried to create an object with an unknown type: " + type
              + " for platform " + GetName() + "!");
    type = "";
    if (creationFunctionTable.find("") == creationFunctionTable.end()) {
-      gd::LogFatalError("Unable to create a base object configuration!");
+      gd::LogError("Unable to create a Base object!");
      return nullptr;
    }
  }
--- a/Core/GDCore/Extensions/PlatformExtension.cpp
+++ b/Core/GDCore/Extensions/PlatformExtension.cpp
@@ -18,8 +18,8 @@
 #include "GDCore/Extensions/Platform.h"
 #include "GDCore/IDE/PlatformManager.h"
 #include "GDCore/Project/Behavior.h"
-#include "GDCore/Project/BehaviorsSharedData.h"
 #include "GDCore/Project/ObjectConfiguration.h"
+#include "GDCore/Project/BehaviorsSharedData.h"
 #include "GDCore/Tools/Localization.h"

 namespace gd {
@@ -200,11 +200,11 @@ PlatformExtension::AddExpressionAndConditionAndAction(
                          group,
                          icon)
          : AddStrExpression(name,
-                             fullname,
-                             expressionDescriptionTemplate.FindAndReplace(
-                                 "<subject>", descriptionSubject),
-                             group,
-                             icon);
+                              fullname,
+                              expressionDescriptionTemplate.FindAndReplace(
+                                  "<subject>", descriptionSubject),
+                              group,
+                              icon);

  return MultipleInstructionMetadata::WithExpressionAndConditionAndAction(
      expression, condition, action);
@@ -215,11 +215,6 @@ gd::DependencyMetadata& PlatformExtension::AddDependency() {
  return extensionDependenciesMetadata.back();
 }

-gd::SourceFileMetadata& PlatformExtension::AddSourceFile() {
-  extensionSourceFilesMetadata.push_back(SourceFileMetadata());
-  return extensionSourceFilesMetadata.back();
-}
-
 gd::ObjectMetadata& PlatformExtension::AddObject(
    const gd::String& name,
    const gd::String& fullname,
@@ -244,10 +239,12 @@ gd::ObjectMetadata& PlatformExtension::AddEventsBasedObject(
    const gd::String& description,
    const gd::String& icon24x24) {
  gd::String nameWithNamespace = GetNameSpace() + name;
-  objectsInfos[nameWithNamespace] =
-      ObjectMetadata(
-          GetNameSpace(), nameWithNamespace, fullname, description, icon24x24)
-          .SetHelpPath(GetHelpPath());
+  objectsInfos[nameWithNamespace] = ObjectMetadata(GetNameSpace(),
+                                                   nameWithNamespace,
+                                                   fullname,
+                                                   description,
+                                                   icon24x24)
+                                        .SetHelpPath(GetHelpPath());
  return objectsInfos[nameWithNamespace];
 }

@@ -351,7 +348,8 @@ gd::BehaviorMetadata& PlatformExtension::GetBehaviorMetadata(
  return badBehaviorMetadata;
 }

-bool PlatformExtension::HasBehavior(const gd::String& behaviorType) const {
+bool PlatformExtension::HasBehavior(
+    const gd::String& behaviorType) const {
  return behaviorsInfo.find(behaviorType) != behaviorsInfo.end();
 }

@@ -383,7 +381,7 @@ gd::InstructionMetadata& PlatformExtension::AddDuplicatedAction(
  auto copiedAction = actionsInfos.find(copiedNameWithNamespace);
  if (copiedAction == actionsInfos.end()) {
    gd::LogError("Could not find an action with name " +
-                 copiedNameWithNamespace + " to copy.");
+                   copiedNameWithNamespace + " to copy.");
  } else {
    actionsInfos[newNameWithNamespace] = copiedAction->second;
  }
@@ -403,7 +401,7 @@ gd::InstructionMetadata& PlatformExtension::AddDuplicatedCondition(
  auto copiedCondition = conditionsInfos.find(copiedNameWithNamespace);
  if (copiedCondition == conditionsInfos.end()) {
    gd::LogError("Could not find a condition with name " +
-                 copiedNameWithNamespace + " to copy.");
+                   copiedNameWithNamespace + " to copy.");
  } else {
    conditionsInfos[newNameWithNamespace] = copiedCondition->second;
  }
@@ -420,7 +418,7 @@ gd::ExpressionMetadata& PlatformExtension::AddDuplicatedExpression(
  auto copiedExpression = expressionsInfos.find(copiedNameWithNamespace);
  if (copiedExpression == expressionsInfos.end()) {
    gd::LogError("Could not find an expression with name " +
-                 copiedNameWithNamespace + " to copy.");
+                   copiedNameWithNamespace + " to copy.");
  } else {
    expressionsInfos[newNameWithNamespace] = copiedExpression->second;
  }
@@ -437,7 +435,7 @@ gd::ExpressionMetadata& PlatformExtension::AddDuplicatedStrExpression(
  auto copiedExpression = strExpressionsInfos.find(copiedNameWithNamespace);
  if (copiedExpression == strExpressionsInfos.end()) {
    gd::LogError("Could not find a string expression with name " +
-                 copiedNameWithNamespace + " to copy.");
+                   copiedNameWithNamespace + " to copy.");
  } else {
    strExpressionsInfos[newNameWithNamespace] = copiedExpression->second;
  }
@@ -465,24 +463,10 @@ PlatformExtension::GetAllStrExpressions() {
  return strExpressionsInfos;
 }

-const std::vector<gd::DependencyMetadata>&
-PlatformExtension::GetAllDependencies() const {
-  return extensionDependenciesMetadata;
-}
-
 std::vector<gd::DependencyMetadata>& PlatformExtension::GetAllDependencies() {
  return extensionDependenciesMetadata;
 }

-const std::vector<gd::SourceFileMetadata>&
-PlatformExtension::GetAllSourceFiles() const {
-  return extensionSourceFilesMetadata;
-}
-
-std::vector<gd::SourceFileMetadata>& PlatformExtension::GetAllSourceFiles() {
-  return extensionSourceFilesMetadata;
-}
-
 std::map<gd::String, gd::EventMetadata>& PlatformExtension::GetAllEvents() {
  return eventsInfos;
 }
@@ -614,6 +598,37 @@ void PlatformExtension::SetNameSpace(gd::String nameSpace_) {
  nameSpace = nameSpace_ + GetNamespaceSeparator();
 }

+std::vector<gd::String> PlatformExtension::GetBuiltinExtensionsNames() {
+  std::vector<gd::String> builtinExtensions;
+  builtinExtensions.push_back("Sprite");
+  builtinExtensions.push_back("BuiltinObject");
+  builtinExtensions.push_back("BuiltinAudio");
+  builtinExtensions.push_back("BuiltinMouse");
+  builtinExtensions.push_back("BuiltinKeyboard");
+  builtinExtensions.push_back("BuiltinJoystick");
+  builtinExtensions.push_back("BuiltinTime");
+  builtinExtensions.push_back("BuiltinFile");
+  builtinExtensions.push_back("BuiltinVariables");
+  builtinExtensions.push_back("BuiltinCamera");
+  builtinExtensions.push_back("BuiltinWindow");
+  builtinExtensions.push_back("BuiltinNetwork");
+  builtinExtensions.push_back("BuiltinScene");
+  builtinExtensions.push_back("BuiltinAdvanced");
+  builtinExtensions.push_back("BuiltinCommonConversions");
+  builtinExtensions.push_back("BuiltinStringInstructions");
+  builtinExtensions.push_back("BuiltinMathematicalTools");
+  builtinExtensions.push_back("BuiltinExternalLayouts");
+  builtinExtensions.push_back("BuiltinCommonInstructions");
+
+  return builtinExtensions;
+}
+
+bool PlatformExtension::IsBuiltin() const {
+  std::vector<gd::String> builtinExtensions = GetBuiltinExtensionsNames();
+  return std::find(builtinExtensions.begin(), builtinExtensions.end(), name) !=
+         builtinExtensions.end();
+}
+
 void PlatformExtension::StripUnimplementedInstructionsAndExpressions() {
  for (std::map<gd::String, gd::InstructionMetadata>::iterator it =
           GetAllActions().begin();
@@ -759,80 +774,40 @@ void PlatformExtension::StripUnimplementedInstructionsAndExpressions() {
  }
 }

-gd::String PlatformExtension::GetEventsFunctionFullType(
-    const gd::String& extensionName, const gd::String& functionName) {
-  const auto& separator = GetNamespaceSeparator();
+gd::String
+PlatformExtension::GetEventsFunctionFullType(const gd::String &extensionName,
+                                             const gd::String &functionName) {
+  const auto &separator = GetNamespaceSeparator();
  return extensionName + separator + functionName;
 }

 gd::String PlatformExtension::GetBehaviorEventsFunctionFullType(
-    const gd::String& extensionName,
-    const gd::String& behaviorName,
-    const gd::String& functionName) {
-  const auto& separator = GetNamespaceSeparator();
+    const gd::String &extensionName, const gd::String &behaviorName,
+    const gd::String &functionName) {
+  const auto &separator = GetNamespaceSeparator();
  return extensionName + separator + behaviorName + separator + functionName;
 }

-gd::String PlatformExtension::GetBehaviorFullType(
-    const gd::String& extensionName, const gd::String& behaviorName) {
-  const auto& separator = GetNamespaceSeparator();
+gd::String
+PlatformExtension::GetBehaviorFullType(const gd::String &extensionName,
+                                       const gd::String &behaviorName) {
+  const auto &separator = GetNamespaceSeparator();
  return extensionName + separator + behaviorName;
 }

-gd::String PlatformExtension::GetExtensionFromFullBehaviorType(
-    const gd::String& type) {
-  const auto separatorIndex =
-      type.find(PlatformExtension::GetNamespaceSeparator());
-  if (separatorIndex == std::string::npos) {
-    return "";
-  }
-  return type.substr(0, separatorIndex);
-}
-
-gd::String PlatformExtension::GetBehaviorNameFromFullBehaviorType(
-    const gd::String& type) {
-  const auto separatorIndex =
-      type.find(PlatformExtension::GetNamespaceSeparator());
-  if (separatorIndex == std::string::npos) {
-    return "";
-  }
-  return type.substr(separatorIndex + 2);
-}
-
 gd::String PlatformExtension::GetObjectEventsFunctionFullType(
-    const gd::String& extensionName,
-    const gd::String& objectName,
-    const gd::String& functionName) {
-  const auto& separator = GetNamespaceSeparator();
+    const gd::String &extensionName, const gd::String &objectName,
+    const gd::String &functionName) {
+  const auto &separator = GetNamespaceSeparator();
  return extensionName + separator + objectName + separator + functionName;
 }

-gd::String PlatformExtension::GetObjectFullType(const gd::String& extensionName,
-                                                const gd::String& objectName) {
-  const auto& separator = GetNamespaceSeparator();
+gd::String PlatformExtension::GetObjectFullType(const gd::String &extensionName,
+                                                const gd::String &objectName) {
+  const auto &separator = GetNamespaceSeparator();
  return extensionName + separator + objectName;
 }

-gd::String PlatformExtension::GetExtensionFromFullObjectType(
-    const gd::String& type) {
-  const auto separatorIndex =
-      type.find(PlatformExtension::GetNamespaceSeparator());
-  if (separatorIndex == std::string::npos) {
-    return "";
-  }
-  return type.substr(0, separatorIndex);
-}
-
-gd::String PlatformExtension::GetObjectNameFromFullObjectType(
-    const gd::String& type) {
-  const auto separatorIndex =
-      type.find(PlatformExtension::GetNamespaceSeparator());
-  if (separatorIndex == std::string::npos) {
-    return "";
-  }
-  return type.substr(separatorIndex + 2);
-}
-
 PlatformExtension::PlatformExtension()
    : deprecated(false), category(_("General")) {}

--- a/Core/GDCore/Extensions/PlatformExtension.h
+++ b/Core/GDCore/Extensions/PlatformExtension.h
@@ -17,7 +17,6 @@
 #include "GDCore/Extensions/Metadata/EventMetadata.h"
 #include "GDCore/Extensions/Metadata/InstructionOrExpressionGroupMetadata.h"
 #include "GDCore/Extensions/Metadata/ObjectMetadata.h"
-#include "GDCore/Extensions/Metadata/SourceFileMetadata.h"
 #include "GDCore/Project/PropertyDescriptor.h"
 #include "GDCore/String.h"
 #include "GDCore/Tools/VersionPriv.h"
@@ -41,7 +40,8 @@ class Object;
 class ObjectConfiguration;
 }  // namespace gd

-typedef std::function<std::unique_ptr<gd::ObjectConfiguration>()> CreateFunPtr;
+typedef std::function<std::unique_ptr<gd::ObjectConfiguration>()>
+    CreateFunPtr;

 namespace gd {

@@ -51,25 +51,25 @@ namespace gd {
 */
 class GD_CORE_API CompilationInfo {
 public:
-  CompilationInfo() {};
-  virtual ~CompilationInfo() {};
+  CompilationInfo() : informationCompleted(false){};
+  virtual ~CompilationInfo(){};

-  bool informationCompleted = false;
+  bool informationCompleted;

-  bool runtimeOnly = false;  ///< True if the extension was compiled for a
-                             ///< runtime use only
+  bool runtimeOnly;  ///< True if the extension was compiled for a runtime use
+                     ///< only

 #if defined(__GNUC__)
-  int gccMajorVersion = 0;
-  int gccMinorVersion = 0;
-  int gccPatchLevel = 0;
+  int gccMajorVersion;
+  int gccMinorVersion;
+  int gccPatchLevel;
 #endif

-  int sfmlMajorVersion = 0;
-  int sfmlMinorVersion = 0;
+  int sfmlMajorVersion;
+  int sfmlMinorVersion;

  gd::String gdCoreVersion;
-  int sizeOfpInt = 0;
+  int sizeOfpInt;
 };

 struct GD_CORE_API DuplicatedInstructionOptions {
@@ -215,7 +215,6 @@ class GD_CORE_API PlatformExtension {
      const gd::String& icon);

  gd::DependencyMetadata& AddDependency();
-  gd::SourceFileMetadata& AddSourceFile();

  /**
   * \brief Declare a new object as being part of the extension.
@@ -240,12 +239,11 @@ class GD_CORE_API PlatformExtension {
   * \param instance The "blueprint" object to be copied when a new object is
   asked for.
   */
-  gd::ObjectMetadata& AddObject(
-      const gd::String& name_,
-      const gd::String& fullname_,
-      const gd::String& description_,
-      const gd::String& icon_,
-      std::shared_ptr<gd::ObjectConfiguration> instance);
+  gd::ObjectMetadata& AddObject(const gd::String& name_,
+                                const gd::String& fullname_,
+                                const gd::String& description_,
+                                const gd::String& icon_,
+                                std::shared_ptr<gd::ObjectConfiguration> instance);

  /**
   * \brief Declare a new events based object as being part of the extension.
@@ -255,10 +253,11 @@ class GD_CORE_API PlatformExtension {
   * \param description The user friendly description of the object
   * \param icon The icon of the object.
   */
-  gd::ObjectMetadata& AddEventsBasedObject(const gd::String& name_,
-                                           const gd::String& fullname_,
-                                           const gd::String& description_,
-                                           const gd::String& icon_);
+  gd::ObjectMetadata& AddEventsBasedObject(
+      const gd::String& name_,
+      const gd::String& fullname_,
+      const gd::String& description_,
+      const gd::String& icon_);

  /**
   * \brief Declare a new behavior as being part of the extension.
@@ -286,6 +285,22 @@ class GD_CORE_API PlatformExtension {
      std::shared_ptr<gd::Behavior> instance,
      std::shared_ptr<gd::BehaviorsSharedData> sharedDatasInstance);

+  /**
+   * \brief Declare a new events based behavior as being part of the extension.
+   *
+   * \param name The name of the behavior
+   * \param fullname The user friendly name of the behavior
+   * \param description The user friendly description of the behavior
+   * \param group The behavior category label
+   * \param icon The icon of the behavior.
+   */
+  gd::BehaviorMetadata& AddEventsBasedBehavior(
+      const gd::String& name_,
+      const gd::String& fullname_,
+      const gd::String& description_,
+      const gd::String& group_,
+      const gd::String& icon_);
+
  /**
   * \brief Declare a new effect as being part of the extension.
   * \param name The internal name of the effect (also called effect type).
@@ -421,7 +436,8 @@ class GD_CORE_API PlatformExtension {
  PlatformExtension& SetTags(const gd::String& csvTags) {
    tags.clear();
    tags = csvTags.Split(',');
-    for (size_t i = 0; i < tags.size(); i++) {
+    for (size_t i = 0; i < tags.size(); i++)
+    {
      tags[i] = tags[i].Trim().LowerCase();
    }
    return *this;
@@ -440,6 +456,12 @@ class GD_CORE_API PlatformExtension {
   */
  bool IsDeprecated() const { return deprecated; }

+  /**
+   * \brief Return true if the extension is a standard extension that cannot be
+   * deactivated
+   */
+  bool IsBuiltin() const;
+
  /**
   * \brief Get the namespace of the extension.
   * \note The namespace is simply the name of the extension concatenated with
@@ -548,24 +570,6 @@ class GD_CORE_API PlatformExtension {
   */
  std::vector<gd::DependencyMetadata>& GetAllDependencies();

-  /**
-   * \brief Return a reference to a vector containing the metadata of all the
-   * dependencies of the extension.
-   */
-  const std::vector<gd::DependencyMetadata>& GetAllDependencies() const;
-
-  /**
-   * \brief Return a reference to a vector containing the metadata of all the
-   * dependencies of the extension.
-   */
-  std::vector<gd::SourceFileMetadata>& GetAllSourceFiles();
-
-  /**
-   * \brief Return a reference to a vector containing the metadata of all the
-   * dependencies of the extension.
-   */
-  const std::vector<gd::SourceFileMetadata>& GetAllSourceFiles() const;
-
  /**
   * \brief Return a reference to a map containing the names of the actions,
   * related to the object type, and the metadata associated with.
@@ -634,40 +638,38 @@ class GD_CORE_API PlatformExtension {
  }
  ///@}

+  /**
+   * \brief Return the name of all the extensions which are considered provided
+   * by platforms.
+   */
+  static std::vector<gd::String> GetBuiltinExtensionsNames();
+
  /**
   * \brief Get the string used to separate the name of the
   * instruction/expression and the extension.
   */
  static gd::String GetNamespaceSeparator() { return "::"; }

-  static gd::String GetEventsFunctionFullType(const gd::String& extensionName,
-                                              const gd::String& functionName);
+  static gd::String GetEventsFunctionFullType(const gd::String &extensionName,
+                                              const gd::String &functionName);

-  static gd::String GetBehaviorEventsFunctionFullType(
-      const gd::String& extensionName,
-      const gd::String& behaviorName,
-      const gd::String& functionName);
+  static gd::String
+  GetBehaviorEventsFunctionFullType(const gd::String &extensionName,
+                                    const gd::String &behaviorName,
+                                    const gd::String &functionName);

-  static gd::String GetBehaviorFullType(const gd::String& extensionName,
-                                        const gd::String& behaviorName);
+  static gd::String GetBehaviorFullType(const gd::String &extensionName,
+                                        const gd::String &behaviorName);

-  static gd::String GetExtensionFromFullBehaviorType(const gd::String& type);
+  static gd::String
+  GetObjectEventsFunctionFullType(const gd::String &extensionName,
+                                  const gd::String &objectName,
+                                  const gd::String &functionName);

-  static gd::String GetBehaviorNameFromFullBehaviorType(const gd::String& type);
+  static gd::String GetObjectFullType(const gd::String &extensionName,
+                                      const gd::String &objectName);

-  static gd::String GetObjectEventsFunctionFullType(
-      const gd::String& extensionName,
-      const gd::String& objectName,
-      const gd::String& functionName);
-
-  static gd::String GetObjectFullType(const gd::String& extensionName,
-                                      const gd::String& objectName);
-
-  static gd::String GetExtensionFromFullObjectType(const gd::String& type);
-
-  static gd::String GetObjectNameFromFullObjectType(const gd::String& type);
-
- private:
+private:
  /**
   * Set the namespace (the string all actions/conditions/expressions start
   * with).
@@ -682,10 +684,10 @@ class GD_CORE_API PlatformExtension {
  gd::String fullname;      ///< Name displayed to users in the editor.
  gd::String informations;  ///< Description displayed to users in the editor.
  gd::String category;
-  gd::String author;   ///< Author displayed to users in the editor.
-  gd::String license;  ///< License name displayed to users in the editor.
-  bool deprecated;     ///< true if the extension is deprecated and shouldn't be
-                       ///< shown in IDE.
+  gd::String author;        ///< Author displayed to users in the editor.
+  gd::String license;       ///< License name displayed to users in the editor.
+  bool deprecated;  ///< true if the extension is deprecated and shouldn't be
+                    ///< shown in IDE.
  gd::String helpPath;  ///< The relative path to the help for this extension in
                        ///< the documentation.
  gd::String iconUrl;   ///< The URL to the icon to be shown for this extension.
@@ -699,7 +701,6 @@ class GD_CORE_API PlatformExtension {
  std::map<gd::String, gd::ExpressionMetadata> expressionsInfos;
  std::map<gd::String, gd::ExpressionMetadata> strExpressionsInfos;
  std::vector<gd::DependencyMetadata> extensionDependenciesMetadata;
-  std::vector<gd::SourceFileMetadata> extensionSourceFilesMetadata;
  std::map<gd::String, gd::EventMetadata> eventsInfos;
  std::map<gd::String, gd::PropertyDescriptor> extensionPropertiesMetadata;
  std::map<gd::String, InstructionOrExpressionGroupMetadata>
--- a/Core/GDCore/Extensions/PlatformExtension.inl
+++ b/Core/GDCore/Extensions/PlatformExtension.inl
@@ -5,8 +5,6 @@
 * project is released under the MIT License.
 */

-// NOLINTBEGIN
-
 #ifndef GDCORE_PLATFORMEXTENSION_INL
 #define GDCORE_PLATFORMEXTENSION_INL

@@ -38,5 +36,3 @@ gd::ObjectMetadata& PlatformExtension::AddObject(const gd::String& name,
 }  // namespace gd

 #endif
-
-// NOLINTEND
--- a/Core/GDCore/IDE/CaptureOptions.cpp
+++ b/Core/GDCore/IDE/CaptureOptions.cpp
@@ -1,18 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#include "GDCore/IDE/CaptureOptions.h"
-
-#include "GDCore/String.h"
-
-using namespace std;
-
-namespace gd {
-
-Screenshot::Screenshot() {}
-
-CaptureOptions::CaptureOptions() {}
-
-}  // namespace gd
--- a/Core/GDCore/IDE/CaptureOptions.h
+++ b/Core/GDCore/IDE/CaptureOptions.h
@@ -1,50 +0,0 @@
-#pragma once
-#include <memory>
-#include <vector>
-
-#include "GDCore/String.h"
-
-namespace gd {
-
-class GD_CORE_API Screenshot {
- public:
-  Screenshot();
-  virtual ~Screenshot() {};
-
-  void SetDelayTimeInSeconds(int delayTimeInMs_) {
-    delayTimeInMs = delayTimeInMs_;
-  }
-  int GetDelayTimeInSeconds() const { return delayTimeInMs; }
-
-  void SetSignedUrl(const gd::String& signedUrl_) { signedUrl = signedUrl_; }
-  const gd::String& GetSignedUrl() const { return signedUrl; }
-
-  void SetPublicUrl(const gd::String& publicUrl_) { publicUrl = publicUrl_; }
-  const gd::String& GetPublicUrl() const { return publicUrl; }
-
- private:
-  int delayTimeInMs = 0;
-  gd::String signedUrl;
-  gd::String publicUrl;
-};
-
-class GD_CORE_API CaptureOptions {
- public:
-  CaptureOptions();
-  virtual ~CaptureOptions() {};
-
-  bool IsEmpty() const { return screenshots.empty(); }
-
-  void AddScreenshot(const Screenshot& screenshot) {
-    screenshots.push_back(screenshot);
-  }
-
-  const std::vector<Screenshot>& GetScreenshots() const { return screenshots; }
-
-  void ClearScreenshots() { screenshots.clear(); }
-
- private:
-  std::vector<Screenshot> screenshots;
-};
-
-}  // namespace gd
--- a/Core/GDCore/IDE/DependenciesAnalyzer.cpp
+++ b/Core/GDCore/IDE/DependenciesAnalyzer.cpp
@@ -12,6 +12,7 @@
 #include "GDCore/Project/ExternalEvents.h"
 #include "GDCore/Project/Layout.h"
 #include "GDCore/Project/Project.h"
+#include "GDCore/Project/SourceFile.h"

 DependenciesAnalyzer::DependenciesAnalyzer(const gd::Project& project_,
                                           const gd::Layout& layout_)
@@ -73,6 +74,16 @@ bool DependenciesAnalyzer::Analyze(const gd::EventsList& events) {
      }
    }

+    // Search for source files dependencies
+    std::vector<gd::String> dependencies =
+        events[i].GetSourceFileDependencies();
+    sourceFilesDependencies.insert(dependencies.begin(), dependencies.end());
+
+    const gd::String& associatedSourceFile =
+        events[i].GetAssociatedGDManagedSourceFile(const_cast<gd::Project&>(project));
+    if (!associatedSourceFile.empty())
+      sourceFilesDependencies.insert(associatedSourceFile);
+
    // Analyze sub events dependencies
    if (events[i].CanHaveSubEvents()) {
      if (!Analyze(events[i].GetSubEvents())) return false;
--- a/Core/GDCore/IDE/DependenciesAnalyzer.h
+++ b/Core/GDCore/IDE/DependenciesAnalyzer.h
@@ -71,6 +71,14 @@ class GD_CORE_API DependenciesAnalyzer {
    return externalEventsDependencies;
  };

+  /**
+   * \brief Return the source files being dependencies of the scene or external
+   * events passed in the constructor.
+   */
+  const std::set<gd::String>& GetSourceFilesDependencies() const {
+    return sourceFilesDependencies;
+  };
+
 private:
  /**
   * \brief Analyze the dependencies of the events.
@@ -84,6 +92,7 @@ class GD_CORE_API DependenciesAnalyzer {

  std::set<gd::String> scenesDependencies;
  std::set<gd::String> externalEventsDependencies;
+  std::set<gd::String> sourceFilesDependencies;
  std::vector<gd::String>
      parentScenes;  ///< Used to check for circular dependencies.
  std::vector<gd::String>
--- a/Core/GDCore/IDE/EventBasedBehaviorBrowser.cpp
+++ b/Core/GDCore/IDE/EventBasedBehaviorBrowser.cpp
@@ -26,9 +26,12 @@ void EventBasedBehaviorBrowser::ExposeEvents(
 void EventBasedBehaviorBrowser::ExposeEvents(
    gd::Project &project, gd::ArbitraryEventsWorkerWithContext &worker) const {
  gd::ProjectBrowserHelper::ExposeEventsBasedBehaviorEvents(
-      project, eventsFunctionsExtension, eventsBasedBehavior, worker);
+      project, eventsBasedBehavior, worker);
 }

+void EventBasedBehaviorBrowser::ExposeObjects(
+    gd::Project &project, gd::ArbitraryObjectsWorker &worker) const {}
+
 void EventBasedBehaviorBrowser::ExposeFunctions(
    gd::Project &project, gd::ArbitraryEventsFunctionsWorker &worker) const {
  worker.Launch(eventsBasedBehavior.GetEventsFunctions());
@@ -40,4 +43,7 @@ void EventBasedBehaviorBrowser::ExposeEventBasedBehaviors(
  worker.Launch(eventsBasedBehavior);
 }

+void EventBasedBehaviorBrowser::ExposeBehaviorSharedDatas(
+    gd::Project &project, gd::ArbitraryBehaviorSharedDataWorker &worker) const {}
+
 } // namespace gd
--- a/Core/GDCore/IDE/EventBasedBehaviorBrowser.h
+++ b/Core/GDCore/IDE/EventBasedBehaviorBrowser.h
@@ -29,11 +29,8 @@ namespace gd {
 */
 class GD_CORE_API EventBasedBehaviorBrowser : public ProjectBrowser {
 public:
-  EventBasedBehaviorBrowser(
-      const gd::EventsFunctionsExtension &eventsFunctionsExtension_,
-      gd::EventsBasedBehavior &eventsBasedBehavior_)
-      : eventsFunctionsExtension(eventsFunctionsExtension_),
-        eventsBasedBehavior(eventsBasedBehavior_) {}
+  EventBasedBehaviorBrowser(gd::EventsBasedBehavior &eventsBasedBehavior_)
+      : eventsBasedBehavior(eventsBasedBehavior_) {}

  /**
   * \brief Call the specified worker on all events of the event-based
@@ -51,7 +48,7 @@ public:
   * This should be the preferred way to traverse all the events of an event-based behavior.
   */
  void
-  ExposeEvents(gd::Project &project, 
+  ExposeEvents(gd::Project &project,
               gd::ArbitraryEventsWorkerWithContext &worker) const override;

  /**
@@ -67,7 +64,7 @@ public:
   * \brief Do nothing.
   */
  void ExposeObjects(gd::Project &project,
-                     gd::ArbitraryObjectsWorker &worker) const override {};
+                     gd::ArbitraryObjectsWorker &worker) const override;

  /**
   * \brief Call the specified worker on the event-based behavior.
@@ -80,10 +77,9 @@ public:
   * \brief Do nothing.
   */
  void ExposeBehaviorSharedDatas(gd::Project &project,
-                         gd::ArbitraryBehaviorSharedDataWorker &worker) const override {};
+                         gd::ArbitraryBehaviorSharedDataWorker &worker) const override;

 private:
-  const gd::EventsFunctionsExtension &eventsFunctionsExtension;
  gd::EventsBasedBehavior &eventsBasedBehavior;
 };

--- a/Core/GDCore/IDE/EventBasedObjectBrowser.cpp
+++ b/Core/GDCore/IDE/EventBasedObjectBrowser.cpp
@@ -1,37 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#include "EventBasedObjectBrowser.h"
-
-#include "GDCore/IDE/Events/ArbitraryEventsWorker.h"
-#include "GDCore/IDE/Project/ArbitraryEventBasedBehaviorsWorker.h"
-#include "GDCore/IDE/Project/ArbitraryEventsFunctionsWorker.h"
-#include "GDCore/IDE/Project/ArbitraryObjectsWorker.h"
-#include "GDCore/IDE/Project/ArbitraryBehaviorSharedDataWorker.h"
-#include "GDCore/IDE/ProjectBrowserHelper.h"
-#include "GDCore/Project/EventsBasedObject.h"
-#include "GDCore/Project/Project.h"
-#include "GDCore/String.h"
-
-namespace gd {
-
-void EventBasedObjectBrowser::ExposeEvents(
-    gd::Project &project, gd::ArbitraryEventsWorker &worker) const {
-  gd::ProjectBrowserHelper::ExposeEventsBasedObjectEvents(
-      project, eventsBasedObject, worker);
-}
-
-void EventBasedObjectBrowser::ExposeEvents(
-    gd::Project &project, gd::ArbitraryEventsWorkerWithContext &worker) const {
-  gd::ProjectBrowserHelper::ExposeEventsBasedObjectEvents(
-      project, eventsFunctionsExtension, eventsBasedObject, worker);
-}
-
-void EventBasedObjectBrowser::ExposeFunctions(
-    gd::Project &project, gd::ArbitraryEventsFunctionsWorker &worker) const {
-  worker.Launch(eventsBasedObject.GetEventsFunctions());
-}
-
-} // namespace gd
--- a/Core/GDCore/IDE/EventBasedObjectBrowser.h
+++ b/Core/GDCore/IDE/EventBasedObjectBrowser.h
@@ -1,90 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#pragma once
-
-#include "GDCore/IDE/ProjectBrowser.h"
-
-namespace gd {
-class Project;
-class String;
-class EventsFunctionsExtension;
-class EventsFunction;
-class EventsBasedBehavior;
-class EventsBasedObject;
-class ArbitraryEventsWorker;
-class ArbitraryEventsWorkerWithContext;
-class ArbitraryEventsFunctionsWorker;
-class ArbitraryObjectsWorker;
-class ArbitraryEventBasedBehaviorsWorker;
-class ArbitraryBehaviorSharedDataWorker;
-} // namespace gd
-
-namespace gd {
-
-/**
- * \brief Expose event-based object contents to workers.
- */
-class GD_CORE_API EventBasedObjectBrowser : public ProjectBrowser {
-public:
-  EventBasedObjectBrowser(
-      const gd::EventsFunctionsExtension &eventsFunctionsExtension_,
-      gd::EventsBasedObject &eventsBasedObject_)
-      : eventsFunctionsExtension(eventsFunctionsExtension_),
-        eventsBasedObject(eventsBasedObject_) {}
-
-  /**
-   * \brief Call the specified worker on all events of the event-based
-   * object.
-   *
-   * This should be the preferred way to traverse all the events of an event-based object.
-   */
-  void ExposeEvents(gd::Project &project,
-                    gd::ArbitraryEventsWorker &worker) const override;
-
-  /**
-   * \brief Call the specified worker on all events of the event-based
-   * object.
-   *
-   * This should be the preferred way to traverse all the events of an event-based object.
-   */
-  void
-  ExposeEvents(gd::Project &project, 
-               gd::ArbitraryEventsWorkerWithContext &worker) const override;
-
-  /**
-   * \brief Call the specified worker on all functions of the event-based object
-   *
-   * This should be the preferred way to traverse all the function signatures
-   * of an event-based object.
-   */
-  void ExposeFunctions(gd::Project &project,
-                       gd::ArbitraryEventsFunctionsWorker &worker) const override;
-
-  /**
-   * \brief Do nothing.
-   */
-  void ExposeObjects(gd::Project &project,
-                     gd::ArbitraryObjectsWorker &worker) const override {};
-
-  /**
-   * @brief Do nothing.
-   */
-  void ExposeEventBasedBehaviors(
-      gd::Project &project,
-      gd::ArbitraryEventBasedBehaviorsWorker &worker) const override {};
-
-  /**
-   * \brief Do nothing.
-   */
-  void ExposeBehaviorSharedDatas(gd::Project &project,
-                         gd::ArbitraryBehaviorSharedDataWorker &worker) const override {};
-
-private:
-  const gd::EventsFunctionsExtension &eventsFunctionsExtension;
-  gd::EventsBasedObject &eventsBasedObject;
-};
-
-} // namespace gd
--- a/Core/GDCore/IDE/Events/ArbitraryEventsWorker.cpp
+++ b/Core/GDCore/IDE/Events/ArbitraryEventsWorker.cpp
@@ -14,27 +14,29 @@
 #include "GDCore/Events/Expression.h"
 #include "GDCore/Extensions/Metadata/ParameterMetadata.h"
 #include "GDCore/String.h"
-#include "GDCore/Tools/Log.h"

 using namespace std;

 namespace gd {

-AbstractArbitraryEventsWorker::~AbstractArbitraryEventsWorker() {}
+ArbitraryEventsWorker::~ArbitraryEventsWorker() {}

-void AbstractArbitraryEventsWorker::VisitEventList(gd::EventsList& events) {
+void ArbitraryEventsWorker::VisitEventList(gd::EventsList& events) {
  DoVisitEventList(events);

  for (std::size_t i = 0; i < events.size();) {
    if (events[i].AcceptVisitor(*this))
      events.RemoveEvent(i);
    else {
+      if (events[i].CanHaveSubEvents())
+        VisitEventList(events[i].GetSubEvents());
+
      ++i;
    }
  }
 }

-bool AbstractArbitraryEventsWorker::VisitEvent(gd::BaseEvent& event) {
+bool ArbitraryEventsWorker::VisitEvent(gd::BaseEvent& event) {
  bool shouldDelete = DoVisitEvent(event);
  if (shouldDelete) return true;

@@ -53,17 +55,15 @@ bool AbstractArbitraryEventsWorker::VisitEvent(gd::BaseEvent& event) {
      *expressionAndMetadata.first, expressionAndMetadata.second);
  }

-  if (!shouldDelete && event.CanHaveSubEvents()) {
-    VisitEventList(event.GetSubEvents());
-  }
+
  return shouldDelete;
 }

-bool AbstractArbitraryEventsWorker::VisitLinkEvent(gd::LinkEvent& linkEvent) {
+bool ArbitraryEventsWorker::VisitLinkEvent(gd::LinkEvent& linkEvent) {
  return DoVisitLinkEvent(linkEvent);
 }

-void AbstractArbitraryEventsWorker::VisitInstructionList(
+void ArbitraryEventsWorker::VisitInstructionList(
    gd::InstructionsList& instructions, bool areConditions) {
  DoVisitInstructionList(instructions, areConditions);

@@ -79,19 +79,22 @@ void AbstractArbitraryEventsWorker::VisitInstructionList(
  }
 }

-bool AbstractArbitraryEventsWorker::VisitInstruction(gd::Instruction& instruction,
+bool ArbitraryEventsWorker::VisitInstruction(gd::Instruction& instruction,
                                             bool isCondition) {
  return DoVisitInstruction(instruction, isCondition);
 }

-bool AbstractArbitraryEventsWorker::VisitEventExpression(gd::Expression& expression,
+bool ArbitraryEventsWorker::VisitEventExpression(gd::Expression& expression,
                                                 const gd::ParameterMetadata& metadata) {
  return DoVisitEventExpression(expression, metadata);
 }

-AbstractReadOnlyArbitraryEventsWorker::~AbstractReadOnlyArbitraryEventsWorker() {}
+ArbitraryEventsWorkerWithContext::~ArbitraryEventsWorkerWithContext() {}

-void AbstractReadOnlyArbitraryEventsWorker::VisitEventList(const gd::EventsList& events) {
+
+ReadOnlyArbitraryEventsWorker::~ReadOnlyArbitraryEventsWorker() {}
+
+void ReadOnlyArbitraryEventsWorker::VisitEventList(const gd::EventsList& events) {
  DoVisitEventList(events);

  for (std::size_t i = 0; i < events.size(); ++i) {
@@ -106,7 +109,7 @@ void AbstractReadOnlyArbitraryEventsWorker::VisitEventList(const gd::EventsList&
  }
 }

-void AbstractReadOnlyArbitraryEventsWorker::VisitEvent(const gd::BaseEvent& event) {
+void ReadOnlyArbitraryEventsWorker::VisitEvent(const gd::BaseEvent& event) {
  DoVisitEvent(event);

  const vector<const gd::InstructionsList*> conditionsVectors =
@@ -127,11 +130,11 @@ void AbstractReadOnlyArbitraryEventsWorker::VisitEvent(const gd::BaseEvent& even
  }
 }

-void AbstractReadOnlyArbitraryEventsWorker::VisitLinkEvent(const gd::LinkEvent& linkEvent) {
+void ReadOnlyArbitraryEventsWorker::VisitLinkEvent(const gd::LinkEvent& linkEvent) {
  DoVisitLinkEvent(linkEvent);
 }

-void AbstractReadOnlyArbitraryEventsWorker::VisitInstructionList(
+void ReadOnlyArbitraryEventsWorker::VisitInstructionList(
    const gd::InstructionsList& instructions, bool areConditions) {
  DoVisitInstructionList(instructions, areConditions);

@@ -147,73 +150,21 @@ void AbstractReadOnlyArbitraryEventsWorker::VisitInstructionList(
  }
 }

-void AbstractReadOnlyArbitraryEventsWorker::VisitInstruction(const gd::Instruction& instruction,
+void ReadOnlyArbitraryEventsWorker::VisitInstruction(const gd::Instruction& instruction,
                                             bool isCondition) {
  DoVisitInstruction(instruction, isCondition);
 }


-void AbstractReadOnlyArbitraryEventsWorker::VisitEventExpression(const gd::Expression& expression,
+void ReadOnlyArbitraryEventsWorker::VisitEventExpression(const gd::Expression& expression,
                                                 const gd::ParameterMetadata& metadata) {
  DoVisitEventExpression(expression, metadata);
 }

-void AbstractReadOnlyArbitraryEventsWorker::StopAnyEventIteration() {
+void ReadOnlyArbitraryEventsWorker::StopAnyEventIteration() {
  shouldStopIteration = true;
 }

-ArbitraryEventsWorker::~ArbitraryEventsWorker() {}
-
-bool ArbitraryEventsWorker::VisitEvent(gd::BaseEvent &event) {
-  return AbstractArbitraryEventsWorker::VisitEvent(event);
-}
-
-ArbitraryEventsWorkerWithContext::~ArbitraryEventsWorkerWithContext() {}
-
-bool ArbitraryEventsWorkerWithContext::VisitEvent(gd::BaseEvent &event) {
-  if (!event.HasVariables()) {
-    return AbstractArbitraryEventsWorker::VisitEvent(event);
-  }
-  // Push local variables
-  auto newProjectScopedContainers =
-      ProjectScopedContainers::MakeNewProjectScopedContainersWithLocalVariables(
-          *currentProjectScopedContainers, event);
-  auto *parentProjectScopedContainers = currentProjectScopedContainers;
-  currentProjectScopedContainers = &newProjectScopedContainers;
-
-  bool shouldDelete = AbstractArbitraryEventsWorker::VisitEvent(event);
-
-  // Pop local variables
-  currentProjectScopedContainers = parentProjectScopedContainers;
-  return shouldDelete;
-}
-
-ReadOnlyArbitraryEventsWorker::~ReadOnlyArbitraryEventsWorker() {}
-
-void ReadOnlyArbitraryEventsWorker::VisitEvent(
-    const gd::BaseEvent &event) {
-  AbstractReadOnlyArbitraryEventsWorker::VisitEvent(event);
-}
-
 ReadOnlyArbitraryEventsWorkerWithContext::~ReadOnlyArbitraryEventsWorkerWithContext() {}

-void ReadOnlyArbitraryEventsWorkerWithContext::VisitEvent(
-    const gd::BaseEvent &event) {
-  if (!event.HasVariables()) {
-    AbstractReadOnlyArbitraryEventsWorker::VisitEvent(event);
-    return;
-  }
-  // Push local variables
-  auto newProjectScopedContainers =
-      ProjectScopedContainers::MakeNewProjectScopedContainersWithLocalVariables(
-          *currentProjectScopedContainers, event);
-  auto *parentProjectScopedContainers = currentProjectScopedContainers;
-  currentProjectScopedContainers = &newProjectScopedContainers;
-
-  AbstractReadOnlyArbitraryEventsWorker::VisitEvent(event);
-
-  // Pop local variables
-  currentProjectScopedContainers = parentProjectScopedContainers;
-}
-
 }  // namespace gd
--- a/Core/GDCore/IDE/Events/ArbitraryEventsWorker.h
+++ b/Core/GDCore/IDE/Events/ArbitraryEventsWorker.h
@@ -3,8 +3,8 @@
 * Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
 * reserved. This project is released under the MIT License.
 */
-#pragma once
-
+#ifndef GDCORE_ARBITRARYEVENTSWORKER_H
+#define GDCORE_ARBITRARYEVENTSWORKER_H
 #include <map>
 #include <memory>
 #include <vector>
@@ -12,7 +12,6 @@
 #include "GDCore/Events/EventVisitor.h"
 #include "GDCore/Project/ProjectScopedContainers.h"
 #include "GDCore/String.h"
-
 namespace gd {
 class Instruction;
 class BaseEvent;
@@ -26,24 +25,27 @@ class ParameterMetadata;
 namespace gd {

 /**
- * \brief AbstractArbitraryEventsWorker is a base abstract class used to browse events (and
- * instructions) and do some work on them. It must not be inherited directly.
+ * \brief ArbitraryEventsWorker is an abstract class used to browse events (and
+ * instructions) and do some work on them. Can be used to implement refactoring
+ * for example.
 *
- * \see gd::ArbitraryEventsWorker
 * \see gd::ArbitraryEventsWorkerWithContext
 *
 * \ingroup IDE
 */
-class GD_CORE_API AbstractArbitraryEventsWorker : private EventVisitor {
+class GD_CORE_API ArbitraryEventsWorker : private EventVisitor {
 public:
-  AbstractArbitraryEventsWorker(){};
-  virtual ~AbstractArbitraryEventsWorker();
+  ArbitraryEventsWorker(){};
+  virtual ~ArbitraryEventsWorker();

-protected:
-  virtual bool VisitEvent(gd::BaseEvent& event) override;
-  void VisitEventList(gd::EventsList& events);
+  /**
+   * \brief Launch the worker on the specified events list.
+   */
+  void Launch(gd::EventsList& events) { VisitEventList(events); };

 private:
+  void VisitEventList(gd::EventsList& events);
+  bool VisitEvent(gd::BaseEvent& event) override;
  bool VisitLinkEvent(gd::LinkEvent& linkEvent) override;
  void VisitInstructionList(gd::InstructionsList& instructions,
                            bool areConditions);
@@ -99,31 +101,6 @@ protected:
  }
 };

-/**
- * \brief ArbitraryEventsWorker is an abstract class used to browse events (and
- * instructions) and do some work on them. Can be used to implement refactoring
- * for example.
- *
- * \see gd::ArbitraryEventsWorkerWithContext
- *
- * \ingroup IDE
- */
-class GD_CORE_API ArbitraryEventsWorker : public AbstractArbitraryEventsWorker {
-public:
-  ArbitraryEventsWorker(){};
-  virtual ~ArbitraryEventsWorker();
-
-  /**
-   * \brief Launch the worker on the specified events list.
-   */
-  void Launch(gd::EventsList &events) {
-    AbstractArbitraryEventsWorker::VisitEventList(events);
-  };
-
-private:
-  bool VisitEvent(gd::BaseEvent &event) override;
-};
-
 /**
 * \brief An events worker that will know about the context (the objects
 * container). Useful for workers working on expressions notably.
@@ -133,10 +110,10 @@ private:
 * \ingroup IDE
 */
 class GD_CORE_API ArbitraryEventsWorkerWithContext
-    : public AbstractArbitraryEventsWorker {
+    : public ArbitraryEventsWorker {
 public:
  ArbitraryEventsWorkerWithContext()
-      : currentProjectScopedContainers(nullptr){};
+      : projectScopedContainers(nullptr){};
  virtual ~ArbitraryEventsWorkerWithContext();

  /**
@@ -144,50 +121,53 @@ class GD_CORE_API ArbitraryEventsWorkerWithContext
   * giving the objects container on which the events are applying to.
   */
  void Launch(gd::EventsList& events,
-              const gd::ProjectScopedContainers& projectScopedContainers) {
-    currentProjectScopedContainers = &projectScopedContainers;
-    AbstractArbitraryEventsWorker::VisitEventList(events);
+              const gd::ProjectScopedContainers& projectScopedContainers_) {
+    projectScopedContainers = &projectScopedContainers_;
+    ArbitraryEventsWorker::Launch(events);
  };

-protected:
+  void Launch(gd::EventsList& events) = delete;
+
+ protected:
  const gd::ProjectScopedContainers& GetProjectScopedContainers() {
    // Pointers are guaranteed to be not nullptr after
    // Launch was called.
-    return *currentProjectScopedContainers;
+    return *projectScopedContainers;
  };
  const gd::ObjectsContainersList& GetObjectsContainersList() {
    // Pointers are guaranteed to be not nullptr after
    // Launch was called.
-    return currentProjectScopedContainers->GetObjectsContainersList();
+    return projectScopedContainers->GetObjectsContainersList();
  };

 private:
-  bool VisitEvent(gd::BaseEvent& event) override;
-
-  const gd::ProjectScopedContainers* currentProjectScopedContainers;
+  const gd::ProjectScopedContainers* projectScopedContainers;
 };

 /**
 * \brief ReadOnlyArbitraryEventsWorker is an abstract class used to browse events (and
- * instructions). It must not be inherited directly.
+ * instructions). It can be used to implement autocompletion for example.
 *
- * \see gd::ReadOnlyArbitraryEventsWorker
 * \see gd::ReadOnlyArbitraryEventsWorkerWithContext
 *
 * \ingroup IDE
 */
-class GD_CORE_API AbstractReadOnlyArbitraryEventsWorker : private ReadOnlyEventVisitor {
+class GD_CORE_API ReadOnlyArbitraryEventsWorker : private ReadOnlyEventVisitor {
 public:
-  AbstractReadOnlyArbitraryEventsWorker() : shouldStopIteration(false) {};
-  virtual ~AbstractReadOnlyArbitraryEventsWorker();
+  ReadOnlyArbitraryEventsWorker() : shouldStopIteration(false) {};
+  virtual ~ReadOnlyArbitraryEventsWorker();
+
+  /**
+   * \brief Launch the worker on the specified events list.
+   */
+  void Launch(const gd::EventsList& events) { VisitEventList(events); };

 protected:
  void StopAnyEventIteration() override;
-  virtual void VisitEvent(const gd::BaseEvent& event) override;
-
-  void VisitEventList(const gd::EventsList& events);

 private:
+  void VisitEventList(const gd::EventsList& events);
+  void VisitEvent(const gd::BaseEvent& event) override;
  void VisitLinkEvent(const gd::LinkEvent& linkEvent) override;
  void VisitInstructionList(const gd::InstructionsList& instructions,
                            bool areConditions);
@@ -233,31 +213,6 @@ protected:
  bool shouldStopIteration;
 };

-/**
- * \brief ReadOnlyArbitraryEventsWorker is an abstract class used to browse events (and
- * instructions). It can be used to implement autocompletion for example.
- *
- * \see gd::ReadOnlyArbitraryEventsWorkerWithContext
- *
- * \ingroup IDE
- */
-class GD_CORE_API ReadOnlyArbitraryEventsWorker
-    : public AbstractReadOnlyArbitraryEventsWorker {
-public:
-  ReadOnlyArbitraryEventsWorker(){};
-  virtual ~ReadOnlyArbitraryEventsWorker();
-
-  /**
-   * \brief Launch the worker on the specified events list.
-   */
-  void Launch(const gd::EventsList &events) {
-    AbstractReadOnlyArbitraryEventsWorker::VisitEventList(events);
-  };
-
-private:
-  void VisitEvent(const gd::BaseEvent &event) override;
-};
-
 /**
 * \brief An events worker that will know about the context (the objects
 * container). Useful for workers working on expressions notably.
@@ -267,10 +222,10 @@ private:
 * \ingroup IDE
 */
 class GD_CORE_API ReadOnlyArbitraryEventsWorkerWithContext
-    : public AbstractReadOnlyArbitraryEventsWorker {
+    : public ReadOnlyArbitraryEventsWorker {
 public:
  ReadOnlyArbitraryEventsWorkerWithContext()
-      : currentProjectScopedContainers(nullptr){};
+      : projectScopedContainers(nullptr){};
  virtual ~ReadOnlyArbitraryEventsWorkerWithContext();

  /**
@@ -278,22 +233,24 @@ class GD_CORE_API ReadOnlyArbitraryEventsWorkerWithContext
   * giving the objects container on which the events are applying to.
   */
  void Launch(const gd::EventsList& events,
-              const gd::ProjectScopedContainers& projectScopedContainers) {
-    currentProjectScopedContainers = &projectScopedContainers;
-    AbstractReadOnlyArbitraryEventsWorker::VisitEventList(events);
+              const gd::ProjectScopedContainers& projectScopedContainers_) {
+    projectScopedContainers = &projectScopedContainers_;
+    ReadOnlyArbitraryEventsWorker::Launch(events);
  };

-protected:
+  void Launch(gd::EventsList& events) = delete;
+
+ protected:
  const gd::ProjectScopedContainers& GetProjectScopedContainers() {
    // Pointers are guaranteed to be not nullptr after
    // Launch was called.
-    return *currentProjectScopedContainers;
+    return *projectScopedContainers;
  };

 private:
-  void VisitEvent(const gd::BaseEvent& event) override;
-
-  const gd::ProjectScopedContainers* currentProjectScopedContainers;
+  const gd::ProjectScopedContainers* projectScopedContainers;
 };

 }  // namespace gd
+
+#endif  // GDCORE_ARBITRARYEVENTSWORKER_H
--- a/Core/GDCore/IDE/Events/BehaviorParametersFiller.cpp
+++ b/Core/GDCore/IDE/Events/BehaviorParametersFiller.cpp
@@ -1,65 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2024 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#include "BehaviorParametersFiller.h"
-
-#include <map>
-#include <memory>
-#include <vector>
-
-#include "GDCore/Events/Instruction.h"
-#include "GDCore/Extensions/Metadata/MetadataProvider.h"
-#include "GDCore/Extensions/Metadata/ParameterMetadataTools.h"
-#include "GDCore/String.h"
-#include "GDCore/Tools/Log.h"
-
-namespace gd {
-
-bool BehaviorParametersFiller::DoVisitInstruction(gd::Instruction &instruction,
-                                                  bool isCondition) {
-  const auto &metadata = isCondition
-                             ? gd::MetadataProvider::GetConditionMetadata(
-                                   platform, instruction.GetType())
-                             : gd::MetadataProvider::GetActionMetadata(
-                                   platform, instruction.GetType());
-
-  gd::ParameterMetadataTools::IterateOverParametersWithIndex(
-      instruction.GetParameters(), metadata.GetParameters(),
-      [&](const gd::ParameterMetadata &parameterMetadata,
-          const gd::Expression &parameterValue, size_t parameterIndex,
-          const gd::String &lastObjectName) {
-        if (parameterMetadata.GetValueTypeMetadata().IsBehavior() &&
-            parameterValue.GetPlainString().length() == 0) {
-
-          auto &expectedBehaviorTypeName =
-              parameterMetadata.GetValueTypeMetadata().GetExtraInfo();
-
-          auto &objectsContainersList =
-              projectScopedContainers.GetObjectsContainersList();
-          auto behaviorNames =
-              objectsContainersList.GetBehaviorsOfObject(lastObjectName, true);
-
-          gd::String foundBehaviorName = "";
-          for (auto &behaviorName : behaviorNames) {
-            auto behaviorTypeName =
-                objectsContainersList.GetTypeOfBehavior(behaviorName, false);
-            if (behaviorTypeName == expectedBehaviorTypeName) {
-              foundBehaviorName = behaviorName;
-              break;
-            }
-          }
-          if (!foundBehaviorName.empty()) {
-            instruction.SetParameter(parameterIndex,
-                                     gd::Expression(foundBehaviorName));
-          }
-        }
-      });
-
-  return false;
-}
-
-BehaviorParametersFiller::~BehaviorParametersFiller() {}
-
-} // namespace gd
--- a/Core/GDCore/IDE/Events/BehaviorParametersFiller.h
+++ b/Core/GDCore/IDE/Events/BehaviorParametersFiller.h
@@ -1,45 +0,0 @@
-/*
- * GDevelop Core
- * Copyright 2008-2024 Florian Rival (Florian.Rival@gmail.com). All rights
- * reserved. This project is released under the MIT License.
- */
-#pragma once
-
-#include "GDCore/IDE/Events/ArbitraryEventsWorker.h"
-#include "GDCore/String.h"
-#include <map>
-#include <memory>
-#include <vector>
-
-namespace gd {
-class Instruction;
-class Platform;
-class ProjectScopedContainers;
-} // namespace gd
-
-namespace gd {
-
-/**
- * \brief Fill empty behavior parameters with any behavior that matches the
- * required behavior type.
- *
- * \ingroup IDE
- */
-class GD_CORE_API BehaviorParametersFiller : public ArbitraryEventsWorker {
-public:
-  BehaviorParametersFiller(
-      const gd::Platform &platform_,
-      const gd::ProjectScopedContainers &projectScopedContainers_)
-      : platform(platform_),
-        projectScopedContainers(projectScopedContainers_){};
-  virtual ~BehaviorParametersFiller();
-
-private:
-  bool DoVisitInstruction(gd::Instruction &instruction,
-                          bool isCondition) override;
-
-  const gd::Platform &platform;
-  const gd::ProjectScopedContainers &projectScopedContainers;
-};
-
-} // namespace gd
--- a/Core/GDCore/IDE/Events/EventsFunctionSelfCallChecker.cpp
+++ b/Core/GDCore/IDE/Events/EventsFunctionSelfCallChecker.cpp
@@ -72,12 +72,12 @@ public:
      gd::String lastObjectParameter = "";
      const gd::InstructionMetadata &instrInfos =
          MetadataProvider::GetActionMetadata(platform, instruction.GetType());
-      for (std::size_t pNb = 0; pNb < instrInfos.parameters.GetParametersCount(); ++pNb) {
+      for (std::size_t pNb = 0; pNb < instrInfos.parameters.size(); ++pNb) {

        if (ParameterMetadata::IsExpression(
-                "number", instrInfos.parameters.GetParameter(pNb).GetType()) ||
+                "number", instrInfos.parameters[pNb].GetType()) ||
            ParameterMetadata::IsExpression(
-                "string", instrInfos.parameters.GetParameter(pNb).GetType())) {
+                "string", instrInfos.parameters[pNb].GetType())) {
          auto node = instruction.GetParameter(pNb).GetRootNode();
          node->Visit(*this);
        }
--- a/Core/GDCore/IDE/Events/EventsIdentifiersFinder.cpp
+++ b/Core/GDCore/IDE/Events/EventsIdentifiersFinder.cpp
@@ -86,11 +86,9 @@ class GD_CORE_API IdentifierFinderExpressionNodeWorker
    }

    size_t parameterIndex = 0;
-    for (size_t metadataIndex = (isObjectFunction ? 1 : 0);
-         metadataIndex < metadata.GetParameters().GetParametersCount() &&
-         parameterIndex < node.parameters.size();
-         ++metadataIndex) {
-      auto& parameterMetadata = metadata.GetParameters().GetParameter(metadataIndex);
+    for (size_t metadataIndex = (isObjectFunction ? 1 : 0); metadataIndex < metadata.parameters.size()
+      && parameterIndex < node.parameters.size(); ++metadataIndex) {
+      auto& parameterMetadata = metadata.parameters[metadataIndex];
      if (parameterMetadata.IsCodeOnly()) {
        continue;
      }
@@ -146,10 +144,10 @@ class GD_CORE_API IdentifierFinderEventWorker
                              platform, instruction.GetType())
                        : MetadataProvider::GetActionMetadata(
                              platform, instruction.GetType());
-      for (std::size_t pNb = 0; pNb < instrInfos.parameters.GetParametersCount(); ++pNb) {
+      for (std::size_t pNb = 0; pNb < instrInfos.parameters.size(); ++pNb) {
        // The parameter has the searched type...
-      if (instrInfos.parameters.GetParameter(pNb).GetType() == "identifier"
-       && instrInfos.parameters.GetParameter(pNb).GetExtraInfo() == identifierType) {
+      if (instrInfos.parameters[pNb].GetType() == "identifier"
+       && instrInfos.parameters[pNb].GetExtraInfo() == identifierType) {
          //...remember the value of the parameter.
          if (objectName.empty() || lastObjectParameter == objectName) {
            results.insert(instruction.GetParameter(pNb).GetPlainString());
@@ -157,9 +155,9 @@ class GD_CORE_API IdentifierFinderEventWorker
        }
        // Search in expressions
        else if (ParameterMetadata::IsExpression(
-                    "number", instrInfos.parameters.GetParameter(pNb).GetType()) ||
+                    "number", instrInfos.parameters[pNb].GetType()) ||
                ParameterMetadata::IsExpression(
-                    "string", instrInfos.parameters.GetParameter(pNb).GetType())) {
+                    "string", instrInfos.parameters[pNb].GetType())) {
          auto node = instruction.GetParameter(pNb).GetRootNode();

          IdentifierFinderExpressionNodeWorker searcher(
@@ -172,7 +170,7 @@ class GD_CORE_API IdentifierFinderEventWorker
        }
        // Remember the value of the last "object" parameter.
        else if (gd::ParameterMetadata::IsObject(
-                    instrInfos.parameters.GetParameter(pNb).GetType())) {
+                    instrInfos.parameters[pNb].GetType())) {
          lastObjectParameter =
              instruction.GetParameter(pNb).GetPlainString();
        }
--- a/Show More
+++ b/Show More