GDevelop/GDevelop.js

GDevelop.js

This is the port of GDevelop core classes to JavaScript. This allow GDevelop Core libraries to run in a browser or on Node.js.

🎮 GDevelop is a full featured, cross-platform, open-source game development software requiring no programming skills. Download it on the official website.

How to build

👋 Usually if you're working on GDevelop editor or extensions in JavaScript, you don't need rebuilding GDevelop.js. If you want to make changes in C++ extensions or classes, read this section.

• Make sure you have CMake 3.17+ (3.5+ should work on Linux/macOS) and Node.js installed.

• Install Emscripten, as explained on the Emscripten installation instructions:

Linux/macOS	Windows
git clone https://github.com/juj/emsdk.git	git clone https://github.com/juj/emsdk.git
cd emsdk	cd emsdk
./emsdk update	emsdk update
./emsdk install 1.39.6	emsdk install 1.39.6
./emsdk activate 1.39.6	emsdk activate 1.39.6
source ./emsdk_env.sh	emsdk_env.bat

• Launch the build from GDevelop.js folder:

    cd GDevelop.js
    npm install
    npm run build

ℹ️ Output is created in /path/to/GD/Binaries/embuild/GDevelop.js/ and also copied to GDevelop 5 IDE (newIDE folder).

⏱ As the linking (last step) of the build can be very long, you can run npm run build -- --dev to disable temporary optimizations and get a (slightly) faster build.

• You can then launch GDevelop 5 that will use your build of GDevelop.js:

    cd ..
    cd newIDE/app
    npm install
    npm start

More information in GDevelop 5 readme.

Tests

npm test

About the internal steps of compilation

The npm build task:

• Creates Binaries/embuild directory,
• Launches CMake inside to compile GDevelop with emconfigure to use Emscripten toolchain,
• Updates the glue.cpp and glue.js from Bindings.idl using Emscripten WebIDL Binder,
• Launches the compilation with make (or ninja on Windows with CMake 3.17+) (you can also compile using MinGW-32 using npm run build-with-MinGW).

See the CMakeLists.txt for the arguments passed to the Emscripten linker.

Documentation

• The file Bindings.idl describes all the classes available in GDevelop.js.
• Refer to GDevelop documentation for detailed documentation of the original C++ classes.