Add missing ability to select text when a fatal error is displayed on screen

Do not show in changelog

.gitignore

@@ -33,3 +33,4 @@
 .Spotlight-V100
 .Trashes
 Thumbs.db
+.claude

.vscode/tasks.json

@@ -38,8 +38,7 @@
       "presentation": {
         "reveal": "silent"
       },
-      "isBackground": true,
-      "runOptions": { "instanceLimit": 1, "runOn": "folderOpen" }
+      "isBackground": true
     },
     {
       "type": "npm",

Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.cpp

@@ -42,15 +42,19 @@ 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.GetParametersCount();
+  for (std::size_t i = startFromArgument;
+       i < instrInfos.parameters.GetParametersCount();
        ++i) {
-    if (instrInfos.parameters.GetParameter(i).GetType() == "relationalOperator") {
+    if (instrInfos.parameters.GetParameter(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.GetParametersCount()) {
     ReportError();
     return "";
   }
@@ -87,16 +91,19 @@ gd::String EventsCodeGenerator::GenerateRelationalOperation(
     const gd::String& relationalOperator,
     const gd::String& lhs,
     const gd::String& rhs) {
-  return lhs + " " + GenerateRelationalOperatorCodes(relationalOperator) + " " + rhs;
+  return lhs + " " + GenerateRelationalOperatorCodes(relationalOperator) + " " +
+         rhs;
 }
 
-const gd::String EventsCodeGenerator::GenerateRelationalOperatorCodes(const gd::String &operatorString) {
+const gd::String EventsCodeGenerator::GenerateRelationalOperatorCodes(
+    const gd::String& operatorString) {
   if (operatorString == "=") {
     return "==";
   }
   if (operatorString != "<" && operatorString != ">" &&
-        operatorString != "<=" && operatorString != ">=" && operatorString != "!=" &&
-        operatorString != "startsWith" && operatorString != "endsWith" && operatorString != "contains") {
+      operatorString != "<=" && operatorString != ">=" &&
+      operatorString != "!=" && operatorString != "startsWith" &&
+      operatorString != "endsWith" && operatorString != "contains") {
     cout << "Warning: Bad relational operator: Set to == by default." << endl;
     return "==";
   }
@@ -124,7 +131,8 @@ gd::String EventsCodeGenerator::GenerateOperatorCall(
     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();
+  for (std::size_t i = startFromArgument;
+       i < instrInfos.parameters.GetParametersCount();
        ++i) {
     if (instrInfos.parameters.GetParameter(i).GetType() == "operator") {
       operatorIndex = i;
@@ -195,7 +203,8 @@ gd::String EventsCodeGenerator::GenerateCompoundOperatorCall(
     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();
+  for (std::size_t i = startFromArgument;
+       i < instrInfos.parameters.GetParametersCount();
        ++i) {
     if (instrInfos.parameters.GetParameter(i).GetType() == "operator") {
       operatorIndex = i;
@@ -248,7 +257,8 @@ gd::String EventsCodeGenerator::GenerateMutatorCall(
     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();
+  for (std::size_t i = startFromArgument;
+       i < instrInfos.parameters.GetParametersCount();
        ++i) {
     if (instrInfos.parameters.GetParameter(i).GetType() == "operator") {
       operatorIndex = i;
@@ -323,49 +333,63 @@ 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.GetParametersCount()) {
     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.GetParametersCount();
+       ++pNb) {
+    if (ParameterMetadata::IsObject(
+            instrInfos.parameters.GetParameter(pNb).GetType())) {
       gd::String objectInParameter =
           condition.GetParameter(pNb).GetPlainString();
 
-      const auto &expectedObjectType =
+      const auto& expectedObjectType =
           instrInfos.parameters.GetParameter(pNb).GetExtraInfo();
-      const auto &actualObjectType =
+      const auto& actualObjectType =
           GetObjectsContainersList().GetTypeOfObject(objectInParameter);
       if (!GetObjectsContainersList().HasObjectOrGroupNamed(
               objectInParameter)) {
         gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::UnknownObject, "",
-            objectInParameter, "");
+            gd::ProjectDiagnostic::ErrorType::UnknownObject,
+            "",
+            objectInParameter,
+            "");
         if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
         return "/* Unknown object - skipped. */";
       } else if (!expectedObjectType.empty() &&
                  actualObjectType != expectedObjectType) {
         gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::MismatchedObjectType, "",
-            actualObjectType, expectedObjectType, objectInParameter);
+            gd::ProjectDiagnostic::ErrorType::MismatchedObjectType,
+            "",
+            actualObjectType,
+            expectedObjectType,
+            objectInParameter);
         if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
         return "/* Mismatched object type - skipped. */";
       }
     }
   }
+  bool isAnyBehaviorMissing =
+      gd::EventsCodeGenerator::CheckBehaviorParameters(condition, instrInfos);
+  if (isAnyBehaviorMissing) {
+    return "/* Missing behavior - skipped. */";
+  }
 
   if (instrInfos.IsObjectInstruction()) {
     gd::String objectName = condition.GetParameter(0).GetPlainString();
     if (!objectName.empty() && instrInfos.parameters.GetParametersCount() > 0) {
       std::vector<gd::String> realObjects =
-          GetObjectsContainersList().ExpandObjectName(objectName, context.GetCurrentObject());
+          GetObjectsContainersList().ExpandObjectName(
+              objectName, context.GetCurrentObject());
       for (std::size_t i = 0; i < realObjects.size(); ++i) {
         // Set up the context
-        gd::String objectType = GetObjectsContainersList().GetTypeOfObject(realObjects[i]);
+        gd::String objectType =
+            GetObjectsContainersList().GetTypeOfObject(realObjects[i]);
         const ObjectMetadata& objInfo =
             MetadataProvider::GetObjectMetadata(platform, objectType);
 
@@ -389,17 +413,17 @@ 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 =
+      const gd::String& objectName = condition.GetParameter(0).GetPlainString();
+      const gd::String& behaviorName =
           condition.GetParameter(1).GetPlainString();
-      const gd::String &actualBehaviorType =
+      const gd::String& actualBehaviorType =
           GetObjectsContainersList().GetTypeOfBehavior(behaviorName);
 
       std::vector<gd::String> realObjects =
           GetObjectsContainersList().ExpandObjectName(
               objectName, context.GetCurrentObject());
 
-      const BehaviorMetadata &autoInfo =
+      const BehaviorMetadata& autoInfo =
           MetadataProvider::GetBehaviorMetadata(platform, actualBehaviorType);
 
       for (std::size_t i = 0; i < realObjects.size(); ++i) {
@@ -411,8 +435,7 @@ gd::String EventsCodeGenerator::GenerateConditionCode(
         // Prepare arguments and generate the whole condition code
         vector<gd::String> arguments = GenerateParametersCodes(
             condition.GetParameters(), instrInfos.parameters, context);
-        conditionCode += GenerateBehaviorCondition(
-            realObjects[i],
+        conditionCode += GenerateBehaviorCondition(realObjects[i],
                                                    behaviorName,
                                                    autoInfo,
                                                    arguments,
@@ -488,31 +511,50 @@ 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) {
+bool EventsCodeGenerator::CheckBehaviorParameters(
+    const gd::Instruction& instruction,
+    const gd::InstructionMetadata& instrInfos) {
+  bool isAnyBehaviorMissing = false;
+  gd::ParameterMetadataTools::IterateOverParametersWithIndex(
+      instruction.GetParameters(),
+      instrInfos.parameters,
+      [this, &isAnyBehaviorMissing, &instrInfos](
+          const gd::ParameterMetadata& parameterMetadata,
+          const gd::Expression& parameterValue,
+          size_t parameterIndex,
+          const gd::String& lastObjectName,
+          size_t lastObjectIndex) {
         if (ParameterMetadata::IsBehavior(parameterMetadata.GetType())) {
-          const gd::String &behaviorName = parameterValue.GetPlainString();
-          const gd::String &actualBehaviorType =
+          const gd::String& behaviorName = parameterValue.GetPlainString();
+          const gd::String& actualBehaviorType =
               GetObjectsContainersList().GetTypeOfBehaviorInObjectOrGroup(
                   lastObjectName, behaviorName);
-          const gd::String &expectedBehaviorType =
+          const gd::String& expectedBehaviorType =
               parameterMetadata.GetExtraInfo();
 
           if (!expectedBehaviorType.empty() &&
               actualBehaviorType != expectedBehaviorType) {
+            const auto& objectParameterMetadata =
+                instrInfos.GetParameter(lastObjectIndex);
+            // Event functions crash if some objects in a group are missing
+            // the required behaviors, since they lose reference to the original
+            // objects. Missing behaviors are considered "fatal" only for
+            // ObjectList parameters, in order to minimize side effects on
+            // built-in functions.
+            if (objectParameterMetadata.GetType() == "objectList") {
+              isAnyBehaviorMissing = true;
+            }
             gd::ProjectDiagnostic projectDiagnostic(
-                gd::ProjectDiagnostic::ErrorType::MissingBehavior, "",
-                actualBehaviorType, expectedBehaviorType, lastObjectName);
+                gd::ProjectDiagnostic::ErrorType::MissingBehavior,
+                "",
+                actualBehaviorType,
+                expectedBehaviorType,
+                lastObjectName);
             if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
           }
         }
       });
+  return isAnyBehaviorMissing;
 }
 
 /**
@@ -521,7 +563,8 @@ void EventsCodeGenerator::CheckBehaviorParameters(
 gd::String EventsCodeGenerator::GenerateActionCode(
     gd::Instruction& action,
     EventsCodeGenerationContext& context,
-    const gd::String& optionalAsyncCallbackName) {
+    const gd::String& optionalAsyncCallbackName,
+    const gd::String& optionalAsyncCallbackId) {
   gd::String actionCode;
 
   const gd::InstructionMetadata& instrInfos =
@@ -546,39 +589,51 @@ 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.GetParametersCount()) {
     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.GetParametersCount();
+       ++pNb) {
+    if (ParameterMetadata::IsObject(
+            instrInfos.parameters.GetParameter(pNb).GetType())) {
       gd::String objectInParameter = action.GetParameter(pNb).GetPlainString();
 
-      const auto &expectedObjectType =
+      const auto& expectedObjectType =
           instrInfos.parameters.GetParameter(pNb).GetExtraInfo();
-      const auto &actualObjectType =
+      const auto& actualObjectType =
           GetObjectsContainersList().GetTypeOfObject(objectInParameter);
       if (!GetObjectsContainersList().HasObjectOrGroupNamed(
               objectInParameter)) {
         gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::UnknownObject, "",
-            objectInParameter, "");
+            gd::ProjectDiagnostic::ErrorType::UnknownObject,
+            "",
+            objectInParameter,
+            "");
         if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
         return "/* Unknown object - skipped. */";
       } else if (!expectedObjectType.empty() &&
                  actualObjectType != expectedObjectType) {
         gd::ProjectDiagnostic projectDiagnostic(
-            gd::ProjectDiagnostic::ErrorType::MismatchedObjectType, "",
-            actualObjectType, expectedObjectType, objectInParameter);
+            gd::ProjectDiagnostic::ErrorType::MismatchedObjectType,
+            "",
+            actualObjectType,
+            expectedObjectType,
+            objectInParameter);
         if (diagnosticReport) diagnosticReport->Add(projectDiagnostic);
         return "/* Mismatched object type - skipped. */";
       }
     }
   }
+  bool isAnyBehaviorMissing =
+      gd::EventsCodeGenerator::CheckBehaviorParameters(action, instrInfos);
+  if (isAnyBehaviorMissing) {
+    return "/* Missing behavior - skipped. */";
+  }
 
   // Call free function first if available
   if (instrInfos.IsObjectInstruction()) {
@@ -586,10 +641,12 @@ gd::String EventsCodeGenerator::GenerateActionCode(
 
     if (instrInfos.parameters.GetParametersCount() > 0) {
       std::vector<gd::String> realObjects =
-          GetObjectsContainersList().ExpandObjectName(objectName, context.GetCurrentObject());
+          GetObjectsContainersList().ExpandObjectName(
+              objectName, context.GetCurrentObject());
       for (std::size_t i = 0; i < realObjects.size(); ++i) {
         // Setup context
-        gd::String objectType = GetObjectsContainersList().GetTypeOfObject(realObjects[i]);
+        gd::String objectType =
+            GetObjectsContainersList().GetTypeOfObject(realObjects[i]);
         const ObjectMetadata& objInfo =
             MetadataProvider::GetObjectMetadata(platform, objectType);
 
@@ -606,23 +663,24 @@ gd::String EventsCodeGenerator::GenerateActionCode(
                                            arguments,
                                            instrInfos,
                                            context,
-                                             optionalAsyncCallbackName);
+                                           optionalAsyncCallbackName,
+                                           optionalAsyncCallbackId);
 
         context.SetNoCurrentObject();
       }
     }
   } 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 =
+      const gd::String& objectName = action.GetParameter(0).GetPlainString();
+      const gd::String& behaviorName = action.GetParameter(1).GetPlainString();
+      const gd::String& actualBehaviorType =
           GetObjectsContainersList().GetTypeOfBehavior(behaviorName);
 
       std::vector<gd::String> realObjects =
           GetObjectsContainersList().ExpandObjectName(
               objectName, context.GetCurrentObject());
 
-      const BehaviorMetadata &autoInfo =
+      const BehaviorMetadata& autoInfo =
           MetadataProvider::GetBehaviorMetadata(platform, actualBehaviorType);
 
       AddIncludeFiles(autoInfo.includeFiles);
@@ -634,15 +692,15 @@ gd::String EventsCodeGenerator::GenerateActionCode(
         // Prepare arguments and generate the whole action code
         vector<gd::String> arguments = GenerateParametersCodes(
             action.GetParameters(), instrInfos.parameters, context);
-        actionCode +=
-            GenerateBehaviorAction(realObjects[i],
+        actionCode += GenerateBehaviorAction(realObjects[i],
                                              behaviorName,
                                              autoInfo,
                                              functionCallName,
                                              arguments,
                                              instrInfos,
                                              context,
-                                   optionalAsyncCallbackName);
+                                             optionalAsyncCallbackName,
+                                             optionalAsyncCallbackId);
 
         context.SetNoCurrentObject();
       }
@@ -654,7 +712,8 @@ gd::String EventsCodeGenerator::GenerateActionCode(
                                      arguments,
                                      instrInfos,
                                      context,
-                                     optionalAsyncCallbackName);
+                                     optionalAsyncCallbackName,
+                                     optionalAsyncCallbackId);
   }
 
   return actionCode;
@@ -667,8 +726,8 @@ gd::String EventsCodeGenerator::GenerateLocalVariablesStackAccessor() {
 }
 
 gd::String EventsCodeGenerator::GenerateAnyOrSceneVariableGetter(
-    const gd::Expression &variableExpression,
-    EventsCodeGenerationContext &context) {
+    const gd::Expression& variableExpression,
+    EventsCodeGenerationContext& context) {
   const auto variableName = gd::ExpressionVariableNameFinder::GetVariableName(
       *variableExpression.GetRootNode());
 
@@ -679,8 +738,12 @@ gd::String EventsCodeGenerator::GenerateAnyOrSceneVariableGetter(
           : "scenevar";
 
   return gd::ExpressionCodeGenerator::GenerateExpressionCode(
-      *this, context, variableParameterType,
-      variableExpression.GetPlainString(), "", "AllowUndeclaredVariable");
+      *this,
+      context,
+      variableParameterType,
+      variableExpression.GetPlainString(),
+      "",
+      "AllowUndeclaredVariable");
 }
 
 const EventsCodeGenerator::CallbackDescriptor
@@ -727,6 +790,11 @@ EventsCodeGenerator::GenerateCallback(
 
   AddCustomCodeOutsideMain(callbackCode);
 
+  const gd::String idToCallbackMapUpdate = GetCodeNamespaceAccessor() +
+                                           "idToCallbackMap.set(" + callbackID +
+                                           ", " + callbackFunctionName + ");\n";
+  AddCustomCodeOutsideMain(idToCallbackMapUpdate);
+
   std::set<gd::String> requiredObjects;
   // Build the list of all objects required by the callback. Any object that has
   // already been declared could have gone through previous object picking, so
@@ -769,7 +837,7 @@ gd::String EventsCodeGenerator::GenerateActionsListCode(
     } else {
       outputCode += actionCode;
     }
-    outputCode += "}";
+    outputCode += "}\n";
   }
 
   return outputCode;
@@ -786,13 +854,28 @@ 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,
+        metadata.GetExtraInfo());
   } else if (ParameterMetadata::IsExpression("string", metadata.GetType())) {
     argOutput = gd::ExpressionCodeGenerator::GenerateExpressionCode(
-        *this, context, "string", parameter, lastObjectName, metadata.GetExtraInfo());
+        *this,
+        context,
+        "string",
+        parameter,
+        lastObjectName,
+        metadata.GetExtraInfo());
   } 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,
+        metadata.GetExtraInfo());
   } 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.
@@ -827,7 +910,8 @@ gd::String EventsCodeGenerator::GenerateParameterCodes(
              metadata.GetType() == "atlasResource" ||
              metadata.GetType() == "spineResource" ||
              // Deprecated, old parameter names:
-             metadata.GetType() == "password" || metadata.GetType() == "musicfile" ||
+             metadata.GetType() == "password" ||
+             metadata.GetType() == "musicfile" ||
              metadata.GetType() == "soundfile") {
     argOutput = "\"" + ConvertToString(parameter.GetPlainString()) + "\"";
   } else if (metadata.GetType() == "mouse") {
@@ -977,7 +1061,8 @@ gd::String EventsCodeGenerator::GenerateEventsListCode(
   for (std::size_t eId = 0; eId < events.size(); ++eId) {
     auto& event = events[eId];
     if (event.HasVariables()) {
-      GetProjectScopedContainers().GetVariablesContainersList().Push(event.GetVariables());
+      GetProjectScopedContainers().GetVariablesContainersList().Push(
+          event.GetVariables());
     }
 
     // Each event has its own context : Objects picked in an event are totally
@@ -1182,14 +1267,16 @@ gd::String EventsCodeGenerator::GenerateFreeAction(
     const std::vector<gd::String>& arguments,
     const gd::InstructionMetadata& instrInfos,
     gd::EventsCodeGenerationContext& context,
-    const gd::String& optionalAsyncCallbackName) {
+    const gd::String& optionalAsyncCallbackName,
+    const gd::String& optionalAsyncCallbackId) {
   // 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.
+      // 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)) {
@@ -1202,23 +1289,19 @@ gd::String EventsCodeGenerator::GenerateFreeAction(
           instrInfos.codeExtraInformation.optionalAssociatedInstruction);
     else if (instrInfos.codeExtraInformation.accessType ==
              gd::InstructionMetadata::ExtraInformation::Mutators)
-      call =
-          GenerateMutatorCall(instrInfos,
-                              arguments,
-                              functionCallName);
+      call = GenerateMutatorCall(instrInfos, arguments, functionCallName);
     else
-      call = GenerateCompoundOperatorCall(
-          instrInfos,
-          arguments,
-          functionCallName);
+      call =
+          GenerateCompoundOperatorCall(instrInfos, arguments, functionCallName);
   } else {
-    call = functionCallName + "(" +
-           GenerateArgumentsList(arguments) + ")";
+    call = functionCallName + "(" + GenerateArgumentsList(arguments) + ")";
   }
 
-  if (!optionalAsyncCallbackName.empty())
+  if (!optionalAsyncCallbackName.empty() && !optionalAsyncCallbackId.empty()) {
     call = "runtimeScene.getAsyncTasksManager().addTask(" + call + ", " +
-           optionalAsyncCallbackName + ")";
+           optionalAsyncCallbackName + ", " + optionalAsyncCallbackId +
+           ", asyncObjectsList)";
+  }
 
   return call + ";\n";
 }
@@ -1230,7 +1313,8 @@ gd::String EventsCodeGenerator::GenerateObjectAction(
     const std::vector<gd::String>& arguments,
     const gd::InstructionMetadata& instrInfos,
     gd::EventsCodeGenerationContext& context,
-    const gd::String& optionalAsyncCallbackName) {
+    const gd::String& optionalAsyncCallbackName,
+    const gd::String& optionalAsyncCallbackId) {
   // Create call
   gd::String call;
   if ((instrInfos.codeExtraInformation.type == "number" ||
@@ -1271,7 +1355,8 @@ gd::String EventsCodeGenerator::GenerateBehaviorAction(
     const std::vector<gd::String>& arguments,
     const gd::InstructionMetadata& instrInfos,
     gd::EventsCodeGenerationContext& context,
-    const gd::String& optionalAsyncCallbackName) {
+    const gd::String& optionalAsyncCallbackName,
+    const gd::String& optionalAsyncCallbackId) {
   // Create call
   gd::String call;
   if ((instrInfos.codeExtraInformation.type == "number" ||
@@ -1286,17 +1371,13 @@ gd::String EventsCodeGenerator::GenerateBehaviorAction(
           2);
     else
       call = GenerateCompoundOperatorCall(
-          instrInfos,
-          arguments,
-          functionCallName,
-          2);
+          instrInfos, arguments, functionCallName, 2);
     return "For each picked object \"" + objectName + "\", call " + call +
            " for behavior \"" + behaviorName + "\".\n";
   } else {
     gd::String argumentsStr = GenerateArgumentsList(arguments, 2);
 
-    call = functionCallName + "(" +
-           argumentsStr + ")";
+    call = functionCallName + "(" + argumentsStr + ")";
 
     return "For each picked object \"" + objectName + "\", call " + call + "(" +
            argumentsStr + ")" + " for behavior \"" + behaviorName + "\"" +
@@ -1351,7 +1432,8 @@ gd::String EventsCodeGenerator::GenerateArgumentsList(
   return argumentsStr;
 }
 
-gd::String EventsCodeGenerator::GeneratePropertyGetter(const gd::PropertiesContainer& propertiesContainer,
+gd::String EventsCodeGenerator::GeneratePropertyGetter(
+    const gd::PropertiesContainer& propertiesContainer,
     const gd::NamedPropertyDescriptor& property,
     const gd::String& type,
     gd::EventsCodeGenerationContext& context) {
@@ -1359,34 +1441,38 @@ gd::String EventsCodeGenerator::GeneratePropertyGetter(const gd::PropertiesConta
 }
 
 gd::String EventsCodeGenerator::GeneratePropertyGetterWithoutCasting(
-    const gd::PropertiesContainer &propertiesContainer,
-    const gd::NamedPropertyDescriptor &property) {
+    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) {
+    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,
+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) {
+    const gd::ParameterMetadata& parameter) {
   return "getParameter" + parameter.GetName() + "()";
-    }
+}
 
 EventsCodeGenerator::EventsCodeGenerator(const gd::Project& project_,
                                          const gd::Layout& layout,
                                          const gd::Platform& platform_)
     : platform(platform_),
-      projectScopedContainers(gd::ProjectScopedContainers::MakeNewProjectScopedContainersForProjectAndLayout(project_, layout)),
+      projectScopedContainers(
+          gd::ProjectScopedContainers::
+              MakeNewProjectScopedContainersForProjectAndLayout(project_,
+                                                                layout)),
       hasProjectAndLayout(true),
       project(&project_),
       scene(&layout),
@@ -1395,7 +1481,7 @@ EventsCodeGenerator::EventsCodeGenerator(const gd::Project& project_,
       maxCustomConditionsDepth(0),
       maxConditionsListsSize(0),
       eventsListNextUniqueId(0),
-      diagnosticReport(nullptr){};
+      diagnosticReport(nullptr) {};
 
 EventsCodeGenerator::EventsCodeGenerator(
     const gd::Platform& platform_,
@@ -1410,6 +1496,6 @@ EventsCodeGenerator::EventsCodeGenerator(
       maxCustomConditionsDepth(0),
       maxConditionsListsSize(0),
       eventsListNextUniqueId(0),
-      diagnosticReport(nullptr){};
+      diagnosticReport(nullptr) {};
 
 }  // namespace gd

Core/GDCore/Events/CodeGeneration/EventsCodeGenerator.h

@@ -9,9 +9,9 @@
 #include <utility>
 #include <vector>
 
+#include "GDCore/Events/CodeGeneration/DiagnosticReport.h"
 #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"
 
@@ -62,7 +62,7 @@ class GD_CORE_API EventsCodeGenerator {
   EventsCodeGenerator(
       const gd::Platform& platform,
       const gd::ProjectScopedContainers& projectScopedContainers_);
-  virtual ~EventsCodeGenerator(){};
+  virtual ~EventsCodeGenerator() {};
 
   /**
    * \brief Preprocess an events list (replacing for example links with the
@@ -160,7 +160,8 @@ class GD_CORE_API EventsCodeGenerator {
   gd::String GenerateActionCode(
       gd::Instruction& action,
       EventsCodeGenerationContext& context,
-      const gd::String& optionalAsyncCallbackName = "");
+      const gd::String& optionalAsyncCallbackName = "",
+      const gd::String& optionalAsyncCallbackId = "");
 
   struct CallbackDescriptor {
     CallbackDescriptor(const gd::String functionName_,
@@ -168,7 +169,7 @@ class GD_CORE_API EventsCodeGenerator {
                        const std::set<gd::String> requiredObjects_)
         : functionName(functionName_),
           argumentsList(argumentsList_),
-          requiredObjects(requiredObjects_){};
+          requiredObjects(requiredObjects_) {};
     /**
      * The name by which the function can be invoked.
      */
@@ -338,9 +339,9 @@ class GD_CORE_API EventsCodeGenerator {
   }
 
   /**
-   * @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
+   * @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() {
@@ -387,9 +388,7 @@ class GD_CORE_API EventsCodeGenerator {
     diagnosticReport = diagnosticReport_;
   }
 
-  gd::DiagnosticReport* GetDiagnosticReport() {
-    return diagnosticReport;
-  }
+  gd::DiagnosticReport* GetDiagnosticReport() { return diagnosticReport; }
 
   /**
    * \brief Generate the full name for accessing to a boolean variable used for
@@ -513,16 +512,16 @@ class GD_CORE_API EventsCodeGenerator {
    * \brief Generate an any variable getter that fallbacks on scene variable for
    * compatibility reason.
    */
-  gd::String
-  GenerateAnyOrSceneVariableGetter(const gd::Expression &variableExpression,
-                                   EventsCodeGenerationContext &context);
+  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);
+      const gd::PropertiesContainer& propertiesContainer,
+      const gd::NamedPropertyDescriptor& property,
+      const gd::String& operandCode);
 
-protected:
+ protected:
   virtual const gd::String GenerateRelationalOperatorCodes(
       const gd::String& operatorString);
 
@@ -643,16 +642,16 @@ protected:
       gd::EventsCodeGenerationContext& context);
 
   virtual gd::String GeneratePropertyGetterWithoutCasting(
-      const gd::PropertiesContainer &propertiesContainer,
-      const gd::NamedPropertyDescriptor &property);
+      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);
+  virtual gd::String GenerateParameterGetterWithoutCasting(
+      const gd::ParameterMetadata& parameter);
 
   /**
    * \brief Generate the code to reference an object which is
@@ -769,7 +768,8 @@ protected:
       const std::vector<gd::String>& arguments,
       const gd::InstructionMetadata& instrInfos,
       gd::EventsCodeGenerationContext& context,
-      const gd::String& optionalAsyncCallbackName = "");
+      const gd::String& optionalAsyncCallbackName = "",
+      const gd::String& optionalAsyncCallbackId = "");
 
   virtual gd::String GenerateObjectAction(
       const gd::String& objectName,
@@ -778,7 +778,8 @@ protected:
       const std::vector<gd::String>& arguments,
       const gd::InstructionMetadata& instrInfos,
       gd::EventsCodeGenerationContext& context,
-      const gd::String& optionalAsyncCallbackName = "");
+      const gd::String& optionalAsyncCallbackName = "",
+      const gd::String& optionalAsyncCallbackId = "");
 
   virtual gd::String GenerateBehaviorAction(
       const gd::String& objectName,
@@ -788,7 +789,8 @@ protected:
       const std::vector<gd::String>& arguments,
       const gd::InstructionMetadata& instrInfos,
       gd::EventsCodeGenerationContext& context,
-      const gd::String& optionalAsyncCallbackName = "");
+      const gd::String& optionalAsyncCallbackName = "",
+      const gd::String& optionalAsyncCallbackId = "");
 
   gd::String GenerateRelationalOperatorCall(
       const gd::InstructionMetadata& instrInfos,
@@ -837,9 +839,8 @@ protected:
   virtual gd::String GenerateGetBehaviorNameCode(
       const gd::String& behaviorName);
 
-  void CheckBehaviorParameters(
-      const gd::Instruction &instruction,
-      const gd::InstructionMetadata &instrInfos);
+  bool CheckBehaviorParameters(const gd::Instruction& instruction,
+                               const gd::InstructionMetadata& instrInfos);
 
   const gd::Platform& platform;  ///< The platform being used.
 
@@ -876,4 +877,3 @@ protected:
 };
 
 }  // namespace gd
-

Core/GDCore/Extensions/Builtin/BaseObjectExtension.cpp

@@ -293,6 +293,25 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .AddCodeOnlyParameter("currentScene", "")
       .MarkAsAdvanced();
 
+  obj.AddAction(
+         "RotateTowardObject",
+         _("Rotate toward another object"),
+         _("Rotate an object towards another object, with the specified speed. "
+           "Note that if multiple instances of the target object are picked, "
+           "only the first one will be used. Use a For Each event or actions "
+           "like \"Pick nearest object\", \"Pick a random object\" to refine "
+           "the choice of the target object."),
+         _("Rotate _PARAM0_ towards _PARAM1_ at speed _PARAM2_ deg/second"),
+         _("Angle"),
+         "res/actions/rotate24_black.png",
+         "res/actions/rotate_black.png")
+      .AddParameter("object", _("Object"))
+      .AddParameter("objectPtr", _("Target object"))
+      .AddParameter("expression", _("Angular speed (in degrees per second)"))
+      .SetParameterLongDescription(_("Enter 0 for an immediate rotation."))
+      .AddCodeOnlyParameter("currentScene", "")
+      .MarkAsAdvanced();
+
   obj.AddAction(
          "AddForceXY",
          _("Add a force"),
@@ -1617,7 +1636,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
 
   extension
       .AddAction("AjoutObjConcern",
-                 _("Pick all instances"),
+                 _("Pick all object instances"),
                  _("Pick all instances of the specified object(s). When you "
                    "pick all instances, "
                    "the next conditions and actions of this event work on all "
@@ -1631,12 +1650,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .MarkAsAdvanced();
 
   extension
-      .AddAction(
-          "AjoutHasard",
+      .AddAction("AjoutHasard",
                  _("Pick a random object"),
-          _("Pick one object from all the specified objects. When an object "
-            "is picked, the next conditions and actions of this event work "
-            "only on that object."),
+                 _("Pick one instance from all the specified objects. When an "
+                   "instance is picked, the next conditions and actions of "
+                   "this event work only on that object instance."),
                  _("Pick a random _PARAM1_"),
                  _("Objects"),
                  "res/actions/ajouthasard24.png",
@@ -1645,6 +1663,21 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .AddParameter("objectList", _("Object"))
       .MarkAsSimple();
 
+  extension
+      .AddAction(
+          "PickNearest",
+          _("Pick nearest object"),
+          _("Pick the instance of this object that is nearest to the specified "
+            "position."),
+          _("Pick the _PARAM0_ that is nearest to _PARAM1_;_PARAM2_"),
+          _("Objects"),
+          "res/conditions/distance24.png",
+          "res/conditions/distance.png")
+      .AddParameter("objectList", _("Object"))
+      .AddParameter("expression", _("X position"))
+      .AddParameter("expression", _("Y position"))
+      .MarkAsSimple();
+
   extension
       .AddAction(
           "MoveObjects",
@@ -1694,11 +1727,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
   extension
       .AddCondition(
           "AjoutObjConcern",
-          _("Pick all objects"),
-          _("Pick all the specified objects. When you pick all objects, "
+          _("Pick all object instances"),
+          _("Pick all instances of the specified object(s). When you "
+            "pick all instances, "
             "the next conditions and actions of this event work on all "
             "of them."),
-          _("Pick all _PARAM1_ objects"),
+          _("Pick all instances of _PARAM1_"),
           _("Objects"),
           "res/conditions/add24.png",
           "res/conditions/add.png")
@@ -1707,12 +1741,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .MarkAsAdvanced();
 
   extension
-      .AddCondition(
-          "AjoutHasard",
+      .AddCondition("AjoutHasard",
                     _("Pick a random object"),
-          _("Pick one object from all the specified objects. When an object "
-            "is picked, the next conditions and actions of this event work "
-            "only on that object."),
+                    _("Pick one instance from all the specified objects. When "
+                      "an instance is picked, the next conditions and actions "
+                      "of this event work only on that object instance."),
                     _("Pick a random _PARAM1_"),
                     _("Objects"),
                     "res/conditions/ajouthasard24.png",
@@ -1725,9 +1758,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsBaseObjectExtension(
       .AddCondition(
           "PickNearest",
           _("Pick nearest object"),
-          _("Pick the object of this type that is nearest to the specified "
-            "position. If the condition is inverted, the object farthest from "
-            "the specified position is picked instead."),
+          _("Pick the instance of this object that is nearest to the specified "
+            "position. If the condition is inverted, the instance farthest "
+            "from the specified position is picked instead."),
           _("Pick the _PARAM0_ that is nearest to _PARAM1_;_PARAM2_"),
           _("Objects"),
           "res/conditions/distance24.png",

Core/GDCore/Extensions/Builtin/Capabilities/AnimatableExtension.cpp

@@ -18,21 +18,21 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsAnimatableExtension(
     gd::PlatformExtension& extension) {
   extension
       .SetExtensionInformation("AnimatableCapability",
-                               _("Animatable capability"),
-                               _("Animate objects."),
+                               _("Objects with animations"),
+                               _("Actions and conditions for objects having animations (sprite, 3D models...)."),
                                "Florian Rival",
                                "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
-  extension.AddInstructionOrExpressionGroupMetadata(_("Animatable capability"))
+  extension.AddInstructionOrExpressionGroupMetadata(_("Objects with animations"))
       .SetIcon("res/actions/animation24.png");
   extension.AddInstructionOrExpressionGroupMetadata(_("Animations and images"))
       .SetIcon("res/actions/animation24.png");
 
   gd::BehaviorMetadata& aut = extension.AddBehavior(
       "AnimatableBehavior",
-      _("Animatable capability"),
+      _("Objects with animations"),
       "Animation",
-      _("Animate objects."),
+      _("Actions and conditions for objects having animations (sprite, 3D models...).."),
       "",
       "res/actions/animation24.png",
       "AnimatableBehavior",

Core/GDCore/Extensions/Builtin/Capabilities/EffectExtension.cpp

@@ -18,8 +18,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsEffectExtension(
     gd::PlatformExtension& extension) {
   extension
       .SetExtensionInformation("EffectCapability",
-                               _("Effect capability"),
-                               _("Apply visual effects to objects."),
+                               _("Objects with effects"),
+                               _("Actions/conditions to enable/disable and change parameters of visual effects applied on objects."),
                                "Florian Rival",
                                "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
@@ -28,9 +28,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsEffectExtension(
 
   gd::BehaviorMetadata& aut = extension.AddBehavior(
       "EffectBehavior",
-      _("Effect capability"),
+      _("Objects with effects"),
       "Effect",
-      _("Apply visual effects to objects."),
+      _("Actions/conditions to enable/disable and change parameters of visual effects applied on objects."),
       "",
       "res/actions/effect_black.svg",
       "EffectBehavior",

Core/GDCore/Extensions/Builtin/Capabilities/FlippableExtension.cpp

@@ -18,8 +18,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFlippableExtension(
     gd::PlatformExtension& extension) {
   extension
       .SetExtensionInformation("FlippableCapability",
-                               _("Flippable capability"),
-                               _("Flip objects."),
+                               _("Flippable objects"),
+                               _("Actions/conditions for objects which can be flipped horizontally or vertically."),
                                "Florian Rival",
                                "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
@@ -28,9 +28,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFlippableExtension(
 
   gd::BehaviorMetadata& aut = extension.AddBehavior(
       "FlippableBehavior",
-      _("Flippable capability"),
+      _("Flippable objects"),
       "Flippable",
-      _("Flip objects."),
+      _("Actions/conditions for objects which can be flipped horizontally or vertically."),
       "",
       "res/actions/flipX24.png",
       "FlippableBehavior",

Core/GDCore/Extensions/Builtin/Capabilities/OpacityExtension.cpp

@@ -18,21 +18,24 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsOpacityExtension(
     gd::PlatformExtension& extension) {
   extension
       .SetExtensionInformation("OpacityCapability",
-                               _("Opacity capability"),
-                               _("Change the object opacity."),
+                               _("Objects with opacity"),
+                               _("Action/condition/expression to change or "
+                                 "check the opacity of an object (0-255)."),
                                "Florian Rival",
                                "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
-  extension.AddInstructionOrExpressionGroupMetadata(_("Opacity capability"))
+  extension.AddInstructionOrExpressionGroupMetadata(_("Objects with opacity"))
       .SetIcon("res/actions/opacity24.png");
   extension.AddInstructionOrExpressionGroupMetadata(_("Visibility"))
       .SetIcon("res/actions/opacity24.png");
 
-  gd::BehaviorMetadata& aut = extension.AddBehavior(
-      "OpacityBehavior",
-      _("Opacity capability"),
+  gd::BehaviorMetadata& aut =
+      extension
+          .AddBehavior("OpacityBehavior",
+                       _("Objects with opacity"),
                        "Opacity",
-      _("Change the object opacity."),
+                       _("Action/condition/expression to change or check the "
+                         "opacity of an object (0-255)."),
                        "",
                        "res/actions/opacity24.png",
                        "OpacityBehavior",
@@ -52,7 +55,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsOpacityExtension(
       .AddParameter("object", _("Object"))
       .AddParameter("behavior", _("Behavior"), "OpacityBehavior")
       .UseStandardParameters(
-          "number", gd::ParameterOptions::MakeNewOptions().SetDescription(
+          "number",
+          gd::ParameterOptions::MakeNewOptions().SetDescription(
               _("Opacity (0-255)")))
       .SetFunctionName("setOpacity")
       .SetGetter("getOpacity");

Core/GDCore/Extensions/Builtin/Capabilities/ResizableExtension.cpp

@@ -16,9 +16,11 @@ namespace gd {
 void GD_CORE_API BuiltinExtensionsImplementer::ImplementsResizableExtension(
     gd::PlatformExtension &extension) {
   extension
-      .SetExtensionInformation("ResizableCapability",
-                               _("Resizable capability"),
-                               _("Change the object dimensions."),
+      .SetExtensionInformation(
+          "ResizableCapability",
+          _("Resizable objects"),
+          _("Change or compare the size (width/height) of an object which can "
+            "be resized (i.e: most objects)."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
@@ -28,9 +30,10 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsResizableExtension(
   gd::BehaviorMetadata &aut =
       extension
           .AddBehavior("ResizableBehavior",
-                       _("Resizable capability"),
+                       _("Resizable objects"),
                        "Resizable",
-                       _("Change the object dimensions."),
+                       _("Change or compare the size (width/height) of an "
+                         "object which can be resized (i.e: most objects)."),
                        "",
                        "res/actions/scale24_black.png",
                        "ResizableBehavior",

Core/GDCore/Extensions/Builtin/Capabilities/ScalableExtension.cpp

@@ -18,21 +18,24 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsScalableExtension(
     gd::PlatformExtension& extension) {
   extension
       .SetExtensionInformation("ScalableCapability",
-                               _("Scalable capability"),
-                               _("Change the object scale."),
+                               _("Scalable objects"),
+                               _("Actions/conditions/expression to change or "
+                                 "check the scale of an object (default: 1)."),
                                "Florian Rival",
                                "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
-  extension.AddInstructionOrExpressionGroupMetadata(_("Scalable capability"))
-      .SetIcon("res/actions/scale24_black.png");
-  extension.AddInstructionOrExpressionGroupMetadata(_("Size"))
+  extension.AddInstructionOrExpressionGroupMetadata(_("Scalable objects"))
       .SetIcon("res/actions/scale24_black.png");
+  extension.AddInstructionOrExpressionGroupMetadata(_("Size")).SetIcon(
+      "res/actions/scale24_black.png");
 
-  gd::BehaviorMetadata& aut = extension.AddBehavior(
-      "ScalableBehavior",
-      _("Scalable capability"),
+  gd::BehaviorMetadata& aut =
+      extension
+          .AddBehavior("ScalableBehavior",
+                       _("Scalable objects"),
                        "Scale",
-      _("Change the object scale."),
+                       _("Actions/conditions/expression to change or check the "
+                         "scale of an object (default: 1)."),
                        "",
                        "res/actions/scale24_black.png",
                        "ResizableBehavior",

Core/GDCore/Extensions/Builtin/Capabilities/TextContainerExtension.cpp

@@ -18,17 +18,17 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTextContainerExtension(
     gd::PlatformExtension& extension) {
   extension
       .SetExtensionInformation("TextContainerCapability",
-                               _("Text capability"),
+                               _("Objects containing a text"),
                                _("Allows an object to contain a text, usually shown on screen, that can be modified."),
                                "Florian Rival",
                                "Open source (MIT License)")
       .SetExtensionHelpPath("/objects");
-  extension.AddInstructionOrExpressionGroupMetadata(_("Text capability"))
+  extension.AddInstructionOrExpressionGroupMetadata(_("Objects containing a text"))
       .SetIcon("res/conditions/text24_black.png");
 
   gd::BehaviorMetadata& aut = extension.AddBehavior(
       "TextContainerBehavior",
-      _("Text capability"),
+      _("Objects containing a text"),
       "Text",
       _("Allows an object to contain a text, usually shown on screen, that can be modified."),
       "",

Core/GDCore/Extensions/Builtin/CommonConversionsExtension.cpp

@@ -16,7 +16,9 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(
       .SetExtensionInformation(
           "BuiltinCommonConversions",
           _("Conversion"),
-          "Expressions to convert number, texts and quantities.",
+          "Expressions to convert numbers to string, strings to numbers, "
+          "angles (degrees from/to radians) and a GDevelop variable to/from a "
+          "JSON string.",
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/all-features/common-conversions");
@@ -41,7 +43,7 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(
 
   extension
       .AddStrExpression("LargeNumberToString",
-                        _("Number > Text ( without scientific notation )"),
+                        _("Number > Text (without scientific notation)"),
                         _("Convert the result of the expression to text, "
                           "without using the scientific notation"),
                         "",
@@ -72,7 +74,8 @@ BuiltinExtensionsImplementer::ImplementsCommonConversionsExtension(
                         _("Convert a variable to JSON"),
                         _("JSON"),
                         "res/conditions/toujours24_black.png")
-      .AddParameter("variable", _("The variable to be stringified"),
+      .AddParameter("variable",
+                    _("The variable to be stringified"),
                     "AllowUndeclaredVariable");
 
   // Deprecated

Core/GDCore/Extensions/Builtin/FileExtension.cpp

@@ -42,13 +42,17 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFileExtension(
   extension
       .AddAction(
           "LoadFile",
-          _("Load a storage in memory"),
-          _("This action loads the specified storage in memory, so you can "
-            "write and read it.\nYou can open and write without using this "
-            "action, but it will be slower.\nIf you use this action, do not "
-            "forget to unload the storage from memory."),
-          _("Load storage _PARAM0_ in memory"),
-          "",
+          _("Manually preload a storage in memory"),
+          _("Forces the specified storage to be loaded and kept in "
+            "memory, allowing faster reads/writes. "
+            "However, it requires manual management: if you use this "
+            "action, you *must* also unload the storage manually when "
+            "it's no longer needed to ensure data is persisted.\n\n"
+            "Unless you have a specific performance need, avoid using this "
+            "action. The system already handles loading/unloading "
+            "automatically."),
+          _("Load data storage _PARAM0_ in memory"),
+          _("Advanced"),
           "res/actions/fichier24.png",
           "res/actions/fichier.png")
       .AddParameter("string", _("Storage name"))
@@ -56,11 +60,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsFileExtension(
 
   extension
       .AddAction("UnloadFile",
-                 _("Close a storage"),
-                 _("This action closes the structured data previously loaded "
+                 _("Manually unload and persist a storage"),
+                 _("Close the specified storage previously loaded "
                    "in memory, saving all changes made."),
-                 _("Close structured data _PARAM0_"),
-                 "",
+                 _("Unload and persist data storage _PARAM0_"),
+                 _("Advanced"),
                  "res/actions/fichier24.png",
                  "res/actions/fichier.png")
       .AddParameter("string", _("Storage name"))

Core/GDCore/Extensions/Builtin/KeyboardExtension.cpp

@@ -15,10 +15,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsKeyboardExtension(
       .SetExtensionInformation(
           "BuiltinKeyboard",
           _("Keyboard"),
-          _("Allows your game to respond to keyboard input. Note that this "
+          _("Conditions to check keys pressed on a keyboard. Note that this "
             "does not work with on-screen keyboard on touch devices: use "
-            "instead conditions related to touch when making a game for "
-            "mobile/touchscreen devices."),
+            "instead mouse/touch conditions when making a game for "
+            "mobile/touchscreen devices or when making a new game from "
+            "scratch."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/all-features/keyboard")
@@ -51,9 +52,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsKeyboardExtension(
       .SetHidden();
 
   extension
-      .AddCondition("KeyFromTextPressed",
+      .AddCondition(
+          "KeyFromTextPressed",
           _("Key pressed"),
-                    _("Check if a key is pressed"),
+          _("Check if a key is pressed. This stays true as long as "
+            "the key is held down. To check if a key was pressed during "
+            "the frame, use \"Key just pressed\" instead."),
           _("_PARAM1_ key is pressed"),
           "",
           "res/conditions/keyboard24.png",
@@ -62,10 +66,22 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsKeyboardExtension(
       .AddParameter("keyboardKey", _("Key to check"))
       .MarkAsSimple();
 
+  extension
+      .AddCondition("KeyFromTextJustPressed",
+                    _("Key just pressed"),
+                    _("Check if a key was just pressed."),
+                    _("_PARAM1_ key was just pressed"),
+                    "",
+                    "res/conditions/keyboard24.png",
+                    "res/conditions/keyboard.png")
+      .AddCodeOnlyParameter("currentScene", "")
+      .AddParameter("keyboardKey", _("Key to check"))
+      .MarkAsSimple();
+
   extension
       .AddCondition("KeyFromTextReleased",
                     _("Key released"),
-                    _("Check if a key was just released"),
+                    _("Check if a key was just released."),
                     _("_PARAM1_ key is released"),
                     "",
                     "res/conditions/keyboard24.png",

Core/GDCore/Extensions/Builtin/MouseExtension.cpp

@@ -16,8 +16,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
       .SetExtensionInformation(
           "BuiltinMouse",
           _("Mouse and touch"),
-          "Conditions and actions to handle either the mouse or touches on "
-          "touchscreen. By default, conditions related to the mouse will also "
+          "Conditions, actions and expressions to handle either the mouse or "
+          "touches on a touchscreen. Notably: cursor position, mouse wheel, "
+          "mouse buttons, touch positions, started/end touches, etc...\n"
+          "\n"
+          "By default, conditions related to the mouse will also "
           "handle the touches - so that it's easier to handle both in your "
           "game. You can disable this behavior if you want to handle them "
           "separately in different events.",
@@ -273,8 +276,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
       .SetHidden();
 
   extension
-      .AddCondition(
-          "MouseButtonFromTextPressed",
+      .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."),
@@ -287,8 +289,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsMouseExtension(
       .MarkAsSimple();
 
   extension
-      .AddCondition(
-          "MouseButtonFromTextReleased",
+      .AddCondition("MouseButtonFromTextReleased",
                     _("Mouse button released"),
                     _("Check if the specified mouse button was released."),
                     _("Touch or _PARAM1_ mouse button is released"),

Core/GDCore/Extensions/Builtin/NetworkExtension.cpp

@@ -15,8 +15,9 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsNetworkExtension(
       .SetExtensionInformation(
           "BuiltinNetwork",
           _("Network"),
-          _("Features to send web requests, communicate with external \"APIs\" "
-            "and other network related tasks."),
+          _("Actions to send web requests, communicate with external \"APIs\" "
+            "and other network related tasks. Also contains an action to open "
+            "a URL on the device browser."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/all-features/network")

Core/GDCore/Extensions/Builtin/SceneExtension.cpp

@@ -4,8 +4,8 @@
  * reserved. This project is released under the MIT License.
  */
 #include "AllBuiltinExtensions.h"
-#include "GDCore/Tools/Localization.h"
 #include "GDCore/Extensions/Metadata/MultipleInstructionMetadata.h"
+#include "GDCore/Tools/Localization.h"
 
 using namespace std;
 namespace gd {
@@ -16,7 +16,11 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSceneExtension(
       .SetExtensionInformation(
           "BuiltinScene",
           _("Scene"),
-          _("Actions and conditions to manipulate the scenes during the game."),
+          _("Actions/conditions to change the current scene (or pause it and "
+            "launch another one, or go back to the previous one), check if a "
+            "scene or the game has just started/resumed, preload assets of a "
+            "scene, get the current scene name or loading progress, quit the "
+            "game, set background color, or disable input when focus is lost."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("" /*TODO: Add a documentation page for this */);
@@ -166,7 +170,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSceneExtension(
       .AddCodeOnlyParameter("currentScene", "");
 
   extension
-      .AddAction("PrioritizeLoadingOfScene",
+      .AddAction(
+          "PrioritizeLoadingOfScene",
           _("Preload scene"),
           _("Preload a scene resources as soon as possible in background."),
           _("Preload scene _PARAM1_ in background"),
@@ -178,10 +183,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSceneExtension(
       .AddParameter("sceneName", _("Name of the new scene"))
       .MarkAsAdvanced();
 
-  extension.AddExpressionAndCondition("number",
+  extension
+      .AddExpressionAndCondition("number",
                                  "SceneLoadingProgress",
                                  _("Scene loading progress"),
-                                _("The progress of resources loading in background for a scene (between 0 and 1)."),
+                                 _("The progress of resources loading in "
+                                   "background for a scene (between 0 and 1)."),
                                  _("_PARAM1_ loading progress"),
                                  _(""),
                                  "res/actions/hourglass_black.svg")
@@ -192,7 +199,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSceneExtension(
       .MarkAsAdvanced();
 
   extension
-      .AddCondition("AreSceneAssetsLoaded",
+      .AddCondition(
+          "AreSceneAssetsLoaded",
           _("Scene preloaded"),
           _("Check if scene resources have finished to load in background."),
           _("Scene _PARAM1_ was preloaded in background"),

Core/GDCore/Extensions/Builtin/SpriteExtension/SpriteExtension.cpp

@@ -15,10 +15,11 @@ namespace gd {
 void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSpriteExtension(
     gd::PlatformExtension& extension) {
   extension
-      .SetExtensionInformation("Sprite",
+      .SetExtensionInformation(
+          "Sprite",
           _("Sprite"),
-                               _("Sprite are animated object which can be used "
-                                 "for most elements of a game."),
+          _("Sprite are animated objects which can be used "
+            "for most elements of a 2D game."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/objects/sprite");
@@ -30,7 +31,7 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSpriteExtension(
           .AddObject<SpriteObject>("Sprite",
                                    _("Sprite"),
                                    _("Animated object which can be used for "
-                                     "most elements of a game."),
+                                     "most elements of a 2D game."),
                                    "CppPlatform/Extensions/spriteicon.png")
           .SetCategoryFullName(_("General"))
           .SetOpenFullEditorLabel(_("Edit animations"))
@@ -645,7 +646,8 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsSpriteExtension(
                     "res/actions/sprite.png")
       .AddParameter("object", _("Object"), "Sprite");
 
-  obj.AddExpression("AnimationFrameCount",
+  obj.AddExpression(
+         "AnimationFrameCount",
          _("Number of frames"),
          _("Number of frames in the current animation of the object"),
          _("Animations and images"),

Core/GDCore/Extensions/Builtin/StringInstructionsExtension.cpp

@@ -16,7 +16,8 @@ BuiltinExtensionsImplementer::ImplementsStringInstructionsExtension(
       .SetExtensionInformation(
           "BuiltinStringInstructions",
           _("Text manipulation"),
-          "Provides expressions to manipulate strings (also called texts).",
+          "Provides expressions to manipulate strings (also called texts): new "
+          "line, upper/lowercase, substring, find, replace, etc...",
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("" /*TODO: Add a documentation page for this */);
@@ -191,7 +192,8 @@ BuiltinExtensionsImplementer::ImplementsStringInstructionsExtension(
                         "res/conditions/toujours24_black.png")
       .AddParameter("string", _("Text in which the replacement must be done"))
       .AddParameter("string", _("Text to find inside the first text"))
-      .AddParameter("string", _("Replacement to put instead of the text to find"));
+      .AddParameter("string",
+                    _("Replacement to put instead of the text to find"));
 
   extension
       .AddStrExpression("StrReplaceAll",
@@ -199,10 +201,11 @@ BuiltinExtensionsImplementer::ImplementsStringInstructionsExtension(
                         _("Replace all occurrences of a text by another."),
                         "",
                         "res/conditions/toujours24_black.png")
-      .AddParameter("string", _("Text in which the replacement(s) must be done"))
+      .AddParameter("string",
+                    _("Text in which the replacement(s) must be done"))
       .AddParameter("string", _("Text to find inside the first text"))
-      .AddParameter("string", _("Replacement to put instead of the text to find"));
-
+      .AddParameter("string",
+                    _("Replacement to put instead of the text to find"));
 }
 
 }  // namespace gd

Core/GDCore/Extensions/Builtin/TimeExtension.cpp

@@ -15,9 +15,12 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTimeExtension(
       .SetExtensionInformation(
           "BuiltinTime",
           _("Timers and time"),
-          "Actions and conditions to run timers, get the current time or "
-          "modify the time scale (speed at which the game is running - useful "
-          "for slow motion effects).",
+          "Actions and conditions to start, pause or reset scene timers, "
+          "modify the time scale (speed at which the game "
+          "is running - useful for slow motion effects). Also contains an "
+          "action that wait for a delay before running the next actions and "
+          "sub-events and expressions to read the time scale, time delta of "
+          "the last frame or timer elapsed time.",
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/all-features/timers-and-time");
@@ -192,24 +195,26 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTimeExtension(
   extension
       .AddExpression("TimerElapsedTime",
                      _("Scene timer value"),
-                     _("Value of a scene timer"),
+                     _("Value of a scene timer (in seconds)"),
                      "",
                      "res/actions/time.png")
       .AddCodeOnlyParameter("currentScene", "")
       .AddParameter("identifier", _("Timer's name"), "sceneTimer");
 
   extension
-      .AddExpression("TimeFromStart",
-                     _("Time elapsed since the beginning of the scene"),
-                     _("Time elapsed since the beginning of the scene"),
+      .AddExpression(
+          "TimeFromStart",
+          _("Time elapsed since the beginning of the scene (in seconds)."),
+          _("Time elapsed since the beginning of the scene (in seconds)."),
           "",
           "res/actions/time.png")
       .AddCodeOnlyParameter("currentScene", "");
 
   extension
-      .AddExpression("TempsDebut",
-                     _("Time elapsed since the beginning of the scene"),
-                     _("Time elapsed since the beginning of the scene"),
+      .AddExpression(
+          "TempsDebut",
+          _("Time elapsed since the beginning of the scene (in seconds)."),
+          _("Time elapsed since the beginning of the scene (in seconds)."),
           "",
           "res/actions/time.png")
       .SetHidden()
@@ -226,16 +231,21 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsTimeExtension(
   extension
       .AddExpression("Time",
                      _("Current time"),
-                     _("Current time"),
+                     _("Gives the current time"),
                      "",
                      "res/actions/time.png")
       .AddCodeOnlyParameter("currentScene", "")
       .AddParameter(
           "stringWithSelector",
-          _("Hour: hour - Minutes: min - Seconds: sec - Day of month: "
-            "mday - Months since January: mon - Year since 1900: year - Days "
-            "since Sunday: wday - Days since Jan 1st: yday - Timestamp (ms): "
-            "timestamp\""),
+          _("- Hour of the day: \"hour\"\n"
+            "- Minutes: \"min\"\n"
+            "- Seconds: \"sec\"\n"
+            "- Day of month: \"mday\"\n"
+            "- Months since January: \"mon\"\n"
+            "- Year since 1900: \"year\"\n"
+            "- Days since Sunday: \"wday\"\n"
+            "- Days since Jan 1st: \"yday\"\n"
+            "- Timestamp (ms): \"timestamp\""),
           "[\"hour\", \"min\", \"sec\", \"mon\", \"year\", \"wday\", \"mday\", "
           "\"yday\", \"timestamp\"]");
 }

Core/GDCore/Extensions/Builtin/WindowExtension.cpp

@@ -15,16 +15,17 @@ void GD_CORE_API BuiltinExtensionsImplementer::ImplementsWindowExtension(
       .SetExtensionInformation(
           "BuiltinWindow",
           _("Game window and resolution"),
-          "Provides actions and conditions to manipulate the game window. "
+          "Actions and conditions to manipulate the game window or change how "
+          "the game is resized according to the screen size. "
           "Depending on the platform on which the game is running, not all of "
-          "these features can be applied.",
+          "these features can be applied.\n"
+          "Also contains expressions to read the screen size.",
           "Florian Rival",
           "Open source (MIT License)")
       .SetCategory("User interface")
       .SetExtensionHelpPath("/all-features/window");
   extension
-      .AddInstructionOrExpressionGroupMetadata(
-          _("Game window and resolution"))
+      .AddInstructionOrExpressionGroupMetadata(_("Game window and resolution"))
       .SetIcon("res/actions/window24.png");
 
   extension

Core/GDCore/Extensions/Metadata/BehaviorMetadata.h

@@ -298,6 +298,19 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
     return *this;
   }
 
+  /**
+   * Check if the behavior can be used on objects from event-based objects.
+   */
+  bool IsRelevantForChildObjects() const { return isRelevantForChildObjects; }
+
+  /**
+   * Set that behavior can't be used on objects from event-based objects.
+   */
+  BehaviorMetadata &MarkAsIrrelevantForChildObjects() {
+    isRelevantForChildObjects = false;
+    return *this;
+  }
+
   QuickCustomization::Visibility GetQuickCustomizationVisibility() const {
     return quickCustomizationVisibility;
   }
@@ -393,6 +406,7 @@ class GD_CORE_API BehaviorMetadata : public InstructionOrExpressionContainerMeta
   mutable std::vector<gd::String> requiredBehaviors;
   bool isPrivate = false;
   bool isHidden = false;
+  bool isRelevantForChildObjects = true;
   gd::String openFullEditorLabel;
   QuickCustomization::Visibility quickCustomizationVisibility = QuickCustomization::Visibility::Default;
 

Core/GDCore/Extensions/Metadata/MetadataProvider.h

@@ -277,6 +277,10 @@ class GD_CORE_API MetadataProvider {
     return &metadata == &badObjectInfo;
   }
 
+  static bool IsBadEffectMetadata(const gd::EffectMetadata& metadata) {
+    return &metadata == &badEffectMetadata;
+  }
+
   virtual ~MetadataProvider();
 
  private:

Core/GDCore/Extensions/Metadata/ParameterMetadataTools.cpp

@@ -194,7 +194,8 @@ void ParameterMetadataTools::IterateOverParameters(
       [&fn](const gd::ParameterMetadata& parameterMetadata,
             const gd::Expression& parameterValue,
             size_t parameterIndex,
-            const gd::String& lastObjectName) {
+            const gd::String& lastObjectName,
+            size_t lastObjectIndex) {
         fn(parameterMetadata, parameterValue, lastObjectName);
       });
 }
@@ -205,8 +206,10 @@ void ParameterMetadataTools::IterateOverParametersWithIndex(
     std::function<void(const gd::ParameterMetadata& parameterMetadata,
                        const gd::Expression& parameterValue,
                        size_t parameterIndex,
-                       const gd::String& lastObjectName)> fn) {
+                       const gd::String& lastObjectName,
+                       size_t lastObjectIndex)> fn) {
   gd::String lastObjectName = "";
+  size_t lastObjectIndex = 0;
   for (std::size_t pNb = 0; pNb < parametersMetadata.GetParametersCount();
        ++pNb) {
     const gd::ParameterMetadata &parameterMetadata =
@@ -218,15 +221,17 @@ void ParameterMetadataTools::IterateOverParametersWithIndex(
             ? Expression(parameterMetadata.GetDefaultValue())
             : parameterValue;
 
-    fn(parameterMetadata, parameterValueOrDefault, pNb, lastObjectName);
+    fn(parameterMetadata, parameterValueOrDefault, pNb, lastObjectName, lastObjectIndex);
 
     // 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.
-    if (gd::ParameterMetadata::IsObject(parameterMetadata.GetType()))
+    if (gd::ParameterMetadata::IsObject(parameterMetadata.GetType())) {
       lastObjectName = parameterValueOrDefault.GetPlainString();
+      lastObjectIndex = pNb;
+    }
   }
 }
 

Core/GDCore/Extensions/Metadata/ParameterMetadataTools.h

@@ -64,7 +64,8 @@ class GD_CORE_API ParameterMetadataTools {
       std::function<void(const gd::ParameterMetadata& parameterMetadata,
                          const gd::Expression& parameterValue,
                          size_t parameterIndex,
-                         const gd::String& lastObjectName)> fn);
+                         const gd::String& lastObjectName,
+                         size_t lastObjectIndex)> fn);
 
   /**
    * Iterate over the parameters of a FunctionCallNode.

Core/GDCore/IDE/Events/BehaviorParametersFiller.cpp

@@ -29,7 +29,7 @@ bool BehaviorParametersFiller::DoVisitInstruction(gd::Instruction &instruction,
       instruction.GetParameters(), metadata.GetParameters(),
       [&](const gd::ParameterMetadata &parameterMetadata,
           const gd::Expression &parameterValue, size_t parameterIndex,
-          const gd::String &lastObjectName) {
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         if (parameterMetadata.GetValueTypeMetadata().IsBehavior() &&
             parameterValue.GetPlainString().length() == 0) {
 

Core/GDCore/IDE/Events/EventsBehaviorRenamer.cpp

@@ -108,12 +108,10 @@ bool EventsBehaviorRenamer::DoVisitInstruction(gd::Instruction& instruction,
                                    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) {
+      instruction.GetParameters(), metadata.GetParameters(),
+      [&](const gd::ParameterMetadata &parameterMetadata,
+          const gd::Expression &parameterValue, size_t parameterIndex,
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         const gd::String& type = parameterMetadata.GetType();
 
         if (gd::ParameterMetadata::IsBehavior(type)) {

Core/GDCore/IDE/Events/EventsParameterReplacer.cpp

@@ -183,12 +183,10 @@ bool EventsParameterReplacer::DoVisitInstruction(gd::Instruction& instruction,
                                    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) {
+      instruction.GetParameters(), metadata.GetParameters(),
+      [&](const gd::ParameterMetadata &parameterMetadata,
+          const gd::Expression &parameterValue, size_t parameterIndex,
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         if (!gd::EventsParameterReplacer::CanContainParameter(
           parameterMetadata.GetValueTypeMetadata())) {
           return;

Core/GDCore/IDE/Events/EventsPropertyReplacer.cpp

@@ -217,12 +217,10 @@ bool EventsPropertyReplacer::DoVisitInstruction(gd::Instruction& instruction,
   bool shouldDeleteInstruction = false;
 
   gd::ParameterMetadataTools::IterateOverParametersWithIndex(
-      instruction.GetParameters(),
-      metadata.GetParameters(),
-      [&](const gd::ParameterMetadata& parameterMetadata,
-          const gd::Expression& parameterValue,
-          size_t parameterIndex,
-          const gd::String& lastObjectName) {
+      instruction.GetParameters(), metadata.GetParameters(),
+      [&](const gd::ParameterMetadata &parameterMetadata,
+          const gd::Expression &parameterValue, size_t parameterIndex,
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         if (!gd::EventsPropertyReplacer::CanContainProperty(
           parameterMetadata.GetValueTypeMetadata())) {
           return;

Core/GDCore/IDE/Events/EventsRefactorer.cpp

@@ -334,7 +334,7 @@ private:
         instruction.GetParameters(), metadata.GetParameters(),
         [&](const gd::ParameterMetadata &parameterMetadata,
             const gd::Expression &parameterValue, size_t parameterIndex,
-            const gd::String &lastObjectName) {
+            const gd::String &lastObjectName, size_t lastObjectIndex) {
           if (!gd::EventsObjectReplacer::CanContainObject(
                   parameterMetadata.GetValueTypeMetadata())) {
             return;

Core/GDCore/IDE/Events/EventsVariableInstructionTypeSwitcher.cpp

@@ -42,12 +42,10 @@ bool EventsVariableInstructionTypeSwitcher::DoVisitInstruction(gd::Instruction&
                                    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) {
+      instruction.GetParameters(), metadata.GetParameters(),
+      [&](const gd::ParameterMetadata &parameterMetadata,
+          const gd::Expression &parameterValue, size_t parameterIndex,
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         const gd::String& type = parameterMetadata.GetType();
 
         if (!gd::ParameterMetadata::IsExpression("variable", type) ||
@@ -75,7 +73,8 @@ bool EventsVariableInstructionTypeSwitcher::DoVisitInstruction(gd::Instruction&
           variablesContainer =
               &GetProjectScopedContainers()
                    .GetVariablesContainersList()
-                      .GetVariablesContainerFromVariableOrPropertyName(variableName);
+                   .GetVariablesContainerFromVariableOrPropertyName(
+                       variableName);
         } else {
           if (GetProjectScopedContainers().GetVariablesContainersList().Has(
                   variableName)) {

Core/GDCore/IDE/Events/EventsVariableReplacer.cpp

@@ -448,12 +448,10 @@ bool EventsVariableReplacer::DoVisitInstruction(gd::Instruction& instruction,
   bool shouldDeleteInstruction = false;
 
   gd::ParameterMetadataTools::IterateOverParametersWithIndex(
-      instruction.GetParameters(),
-      metadata.GetParameters(),
-      [&](const gd::ParameterMetadata& parameterMetadata,
-          const gd::Expression& parameterValue,
-          size_t parameterIndex,
-          const gd::String& lastObjectName) {
+      instruction.GetParameters(), metadata.GetParameters(),
+      [&](const gd::ParameterMetadata &parameterMetadata,
+          const gd::Expression &parameterValue, size_t parameterIndex,
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         const gd::String& type = parameterMetadata.GetType();
 
         if (!gd::ParameterMetadata::IsExpression("variable", type) &&

Core/GDCore/IDE/Events/ProjectElementRenamer.cpp

@@ -150,7 +150,7 @@ bool ProjectElementRenamer::DoVisitInstruction(gd::Instruction &instruction,
       instruction.GetParameters(), metadata.GetParameters(),
       [&](const gd::ParameterMetadata &parameterMetadata,
           const gd::Expression &parameterValue, size_t parameterIndex,
-          const gd::String &lastObjectName) {
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         if (parameterMetadata.GetType() == "layer") {
           if (parameterValue.GetPlainString().length() < 2) {
             // This is either the base layer or an invalid layer name.

Core/GDCore/IDE/EventsBasedObjectVariantHelper.cpp

@@ -63,7 +63,6 @@ void EventsBasedObjectVariantHelper::ComplyVariantsToEventsBasedObject(
       }
 
       // Copy missing behaviors
-      auto &behaviors = object.GetAllBehaviorContents();
       for (const auto &pair : defaultBehaviors) {
         const auto &behaviorName = pair.first;
         const auto &defaultBehavior = pair.second;
@@ -82,11 +81,9 @@ void EventsBasedObjectVariantHelper::ComplyVariantsToEventsBasedObject(
         }
       }
       // Delete extra behaviors
-      for (auto it = behaviors.begin(); it != behaviors.end(); ++it) {
-        const auto &behaviorName = it->first;
+      for (auto &behaviorName : object.GetAllBehaviorNames()) {
         if (!defaultObject->HasBehaviorNamed(behaviorName)) {
           object.RemoveBehavior(behaviorName);
-          --it;
         }
       }
 

Core/GDCore/IDE/ObjectAssetSerializer.cpp

@@ -76,6 +76,7 @@ void ObjectAssetSerializer::SerializeTo(
 
   double width = 0;
   double height = 0;
+  std::unordered_set<gd::String> alreadyUsedVariantIdentifiers;
   if (project.HasEventsBasedObject(object.GetType())) {
     SerializerElement &variantsElement =
         objectAssetElement.AddChild("variants");
@@ -87,7 +88,6 @@ void ObjectAssetSerializer::SerializeTo(
       height = variant->GetAreaMaxY() - variant->GetAreaMinY();
     }
 
-    std::unordered_set<gd::String> alreadyUsedVariantIdentifiers;
     gd::ObjectAssetSerializer::SerializeUsedVariantsTo(
         project, object, variantsElement, alreadyUsedVariantIdentifiers);
   }
@@ -114,14 +114,24 @@ void ObjectAssetSerializer::SerializeTo(
     resourceElement.SetAttribute("name", resource.GetName());
   }
 
+  std::unordered_set<gd::String> usedExtensionNames;
+  usedExtensionNames.insert(extensionName);
+  for (auto &usedVariantIdentifier : alreadyUsedVariantIdentifiers) {
+    usedExtensionNames.insert(PlatformExtension::GetExtensionFromFullObjectType(
+        usedVariantIdentifier));
+  }
   SerializerElement &requiredExtensionsElement =
       objectAssetElement.AddChild("requiredExtensions");
   requiredExtensionsElement.ConsiderAsArrayOf("requiredExtension");
-  if (project.HasEventsFunctionsExtensionNamed(extensionName)) {
+  for (auto &usedExtensionName : usedExtensionNames) {
+    if (project.HasEventsFunctionsExtensionNamed(usedExtensionName)) {
+      auto &extension = project.GetEventsFunctionsExtension(usedExtensionName);
       SerializerElement &requiredExtensionElement =
           requiredExtensionsElement.AddChild("requiredExtension");
-    requiredExtensionElement.SetAttribute("extensionName", extensionName);
-    requiredExtensionElement.SetAttribute("extensionVersion", "1.0.0");
+      requiredExtensionElement.SetAttribute("extensionName", usedExtensionName);
+      requiredExtensionElement.SetAttribute("extensionVersion",
+                                            extension.GetVersion());
+    }
   }
 
   // TODO This can be removed when the asset script no longer require it.

Core/GDCore/IDE/Project/ArbitraryResourceWorker.cpp

@@ -227,12 +227,11 @@ bool ResourceWorkerInEventsWorker::DoVisitInstruction(gd::Instruction& instructi
                                     platform, instruction.GetType());
 
   gd::ParameterMetadataTools::IterateOverParametersWithIndex(
-      instruction.GetParameters(),
-      metadata.GetParameters(),
-      [this, &instruction](const gd::ParameterMetadata& parameterMetadata,
-                            const gd::Expression& parameterExpression,
-                            size_t parameterIndex,
-                            const gd::String& lastObjectName) {
+      instruction.GetParameters(), metadata.GetParameters(),
+      [this, &instruction](
+          const gd::ParameterMetadata &parameterMetadata,
+          const gd::Expression &parameterExpression, size_t parameterIndex,
+          const gd::String &lastObjectName, size_t lastObjectIndex) {
         const String& parameterValue = parameterExpression.GetPlainString();
         if (parameterMetadata.GetType() == "fontResource") {
           gd::String updatedParameterValue = parameterValue;

Core/GDCore/IDE/PropertyFunctionGenerator.cpp

@@ -248,12 +248,13 @@ gd::String PropertyFunctionGenerator::GetStringifiedExtraInfo(
     gd::String arrayString;
     arrayString += "[";
     bool isFirst = true;
-    for (const gd::String &choice : property.GetExtraInfo()) {
+    for (const auto &choice : property.GetChoices()) {
       if (!isFirst) {
         arrayString += ",";
       }
       isFirst = false;
-      arrayString += "\"" + choice + "\"";
+      // TODO Handle labels (and search "choice label")
+      arrayString += "\"" + choice.GetValue() + "\"";
     }
     arrayString += "]";
     return arrayString;

Core/GDCore/IDE/ResourceExposer.cpp

@@ -75,6 +75,17 @@ void ResourceExposer::ExposeProjectResources(
   // Expose global objects configuration resources
   auto objectWorker = gd::GetResourceWorkerOnObjects(project, worker);
   objectWorker.Launch(project.GetObjects());
+
+  // Exposed extension event resources
+  // Note that using resources in extensions is very unlikely and probably not
+  // worth the effort of something smart.
+  auto eventWorker = gd::GetResourceWorkerOnEvents(project, worker);
+  for (std::size_t e = 0; e < project.GetEventsFunctionsExtensionsCount();
+       e++) {
+    auto &eventsFunctionsExtension = project.GetEventsFunctionsExtension(e);
+    gd::ProjectBrowserHelper::ExposeEventsFunctionsExtensionEvents(
+        project, eventsFunctionsExtension, eventWorker);
+  }
 }
 
 void ResourceExposer::ExposeLayoutResources(
@@ -103,16 +114,6 @@ void ResourceExposer::ExposeLayoutResources(
   auto eventWorker = gd::GetResourceWorkerOnEvents(project, worker);
   gd::ProjectBrowserHelper::ExposeLayoutEventsAndDependencies(
       project, layout, eventWorker);
-
-  // Exposed extension event resources
-  // Note that using resources in extensions is very unlikely and probably not
-  // worth the effort of something smart.
-  for (std::size_t e = 0; e < project.GetEventsFunctionsExtensionsCount();
-       e++) {
-    auto &eventsFunctionsExtension = project.GetEventsFunctionsExtension(e);
-    gd::ProjectBrowserHelper::ExposeEventsFunctionsExtensionEvents(
-        project, eventsFunctionsExtension, eventWorker);
-  }
 }
 
 void ResourceExposer::ExposeEffectResources(

Core/GDCore/Project/EventsBasedObjectVariant.cpp

@@ -37,6 +37,7 @@ void EventsBasedObjectVariant::SerializeTo(SerializerElement &element) const {
 
   layers.SerializeLayersTo(element.AddChild("layers"));
   initialInstances.SerializeTo(element.AddChild("instances"));
+  editorSettings.SerializeTo(element.AddChild("editionSettings"));
 }
 
 void EventsBasedObjectVariant::UnserializeFrom(
@@ -66,6 +67,7 @@ void EventsBasedObjectVariant::UnserializeFrom(
     layers.Reset();
   }
   initialInstances.UnserializeFrom(element.GetChild("instances"));
+  editorSettings.UnserializeFrom(element.GetChild("editionSettings"));
 }
 
 } // namespace gd

Core/GDCore/Project/EventsBasedObjectVariant.h

@@ -5,6 +5,7 @@
  */
 #pragma once
 
+#include "GDCore/IDE/Dialogs/LayoutEditorCanvas/EditorSettings.h"
 #include "GDCore/Project/InitialInstancesContainer.h"
 #include "GDCore/Project/LayersContainer.h"
 #include "GDCore/Project/ObjectsContainer.h"
@@ -200,6 +201,19 @@ public:
     return assetStoreOriginalName;
   };
   
+  /**
+   * 
+   * \brief Get the user settings for the IDE.
+   */
+  const gd::EditorSettings& GetAssociatedEditorSettings() const {
+    return editorSettings;
+  }
+
+  /**
+   * \brief Get the user settings for the IDE.
+   */
+  gd::EditorSettings& GetAssociatedEditorSettings() { return editorSettings; }
+
   void SerializeTo(SerializerElement &element) const;
 
   void UnserializeFrom(gd::Project &project, const SerializerElement &element);
@@ -224,6 +238,7 @@ private:
    * store.
    */
   gd::String assetStoreOriginalName;
+  gd::EditorSettings editorSettings;
 };
 
 } // namespace gd

Core/GDCore/Project/PropertyDescriptor.cpp

@@ -34,6 +34,20 @@ void PropertyDescriptor::SerializeTo(SerializerElement& element) const {
     }
   }
 
+  if (!choices.empty()
+      // Compatibility with GD <= 5.5.239
+      || !extraInformation.empty()
+      // end of compatibility code
+  ) {
+    SerializerElement &choicesElement = element.AddChild("choices");
+    choicesElement.ConsiderAsArrayOf("choice");
+    for (const auto &choice : choices) {
+      auto &choiceElement = choicesElement.AddChild("Choice");
+      choiceElement.SetStringAttribute("value", choice.GetValue());
+      choiceElement.SetStringAttribute("label", choice.GetLabel());
+    }
+  }
+
   if (hidden) {
     element.AddChild("hidden").SetBoolValue(hidden);
   }
@@ -80,6 +94,26 @@ void PropertyDescriptor::UnserializeFrom(const SerializerElement& element) {
           extraInformationElement.GetChild(i).GetStringValue());
   }
 
+  if (element.HasChild("choices")) {
+    choices.clear();
+    const SerializerElement &choicesElement = element.GetChild("choices");
+    choicesElement.ConsiderAsArrayOf("choice");
+    for (std::size_t i = 0; i < choicesElement.GetChildrenCount(); ++i) {
+      auto &choiceElement = choicesElement.GetChild(i);
+      AddChoice(choiceElement.GetStringAttribute("value"),
+                choiceElement.GetStringAttribute("label"));
+    }
+  }
+  // Compatibility with GD <= 5.5.239
+  else if (type == "Choice") {
+    choices.clear();
+    for (auto &choiceValue : extraInformation) {
+      AddChoice(choiceValue, choiceValue);
+    }
+    extraInformation.clear();
+  }
+  // end of compatibility code
+
   hidden = element.HasChild("hidden")
                ? element.GetChild("hidden").GetBoolValue()
                : false;

Core/GDCore/Project/PropertyDescriptor.h

@@ -116,6 +116,11 @@ class GD_CORE_API PropertyDescriptor {
     return *this;
   }
 
+  PropertyDescriptor& ClearChoices() {
+    choices.clear();
+    return *this;
+  }
+
   PropertyDescriptor& AddChoice(const gd::String& value,
                                 const gd::String& label) {
     choices.push_back(PropertyDescriptorChoice(value, label));

Core/GDevelop-Architecture-Overview.md

@@ -24,7 +24,7 @@ The rest of this page is an introduction to the main concepts of GDevelop archit
 
 Extensions do have the same distinction between the "**IDE**" part and the "**Runtime**" part. For example, most extensions have:
 
--   A file called [`JsExtension.js`(https://github.com/4ian/GDevelop/blob/master/Extensions/ExampleJsExtension/JsExtension.js)], which contains the _declaration_ of the extension for the **IDE**
+-   A file called [`JsExtension.js`](https://github.com/4ian/GDevelop/blob/master/Extensions/ExampleJsExtension/JsExtension.js), which contains the _declaration_ of the extension for the **IDE**
 -   One or more files implementing the feature for the game, in other words for **Runtime**. This can be a [Runtime Object](https://github.com/4ian/GDevelop/blob/master/Extensions/ExampleJsExtension/dummyruntimeobject.ts) or a [Runtime Behavior](https://github.com/4ian/GDevelop/blob/master/Extensions/ExampleJsExtension/dummyruntimebehavior.ts), [functions called by actions or conditions](https://github.com/4ian/GDevelop/blob/master/Extensions/ExampleJsExtension/examplejsextensiontools.ts) or by the game engine.
 
 ### "Runtime" and "IDE" difference using an example: the `gd::Variable` class

Core/tests/ArbitraryResourceWorker.cpp

@@ -764,129 +764,6 @@ TEST_CASE("ArbitraryResourceWorker", "[common][resources]") {
       REQUIRE(worker.audios[0] == "res4");
     }
 
-    SECTION("Can find resource usages in event-based functions") {
-      gd::Project project;
-      gd::Platform platform;
-      SetupProjectWithDummyPlatform(project, platform);
-
-      project.GetResourcesManager().AddResource(
-          "res1", "path/to/file1.png", "image");
-      project.GetResourcesManager().AddResource(
-          "res2", "path/to/file2.png", "image");
-      project.GetResourcesManager().AddResource(
-          "res3", "path/to/file3.png", "image");
-      ArbitraryResourceWorkerTest worker(project.GetResourcesManager());
-
-      auto& extension = project.InsertNewEventsFunctionsExtension("MyEventExtension", 0);
-      auto &function = extension.GetEventsFunctions().InsertNewEventsFunction(
-          "MyFreeFunction", 0);
-
-      gd::StandardEvent standardEvent;
-      gd::Instruction instruction;
-      instruction.SetType("MyExtension::DoSomethingWithResources");
-      instruction.SetParametersCount(3);
-      instruction.SetParameter(0, "res3");
-      instruction.SetParameter(1, "res1");
-      instruction.SetParameter(2, "res4");
-      standardEvent.GetActions().Insert(instruction);
-      function.GetEvents().InsertEvent(standardEvent);
-
-      auto& layout = project.InsertNewLayout("MyScene", 0);
-
-      // MyEventExtension::MyFreeFunction doesn't need to be actually used in
-      // events because the implementation is naive.
-
-      gd::ResourceExposer::ExposeLayoutResources(project, layout, worker);
-      REQUIRE(worker.bitmapFonts.size() == 1);
-      REQUIRE(worker.bitmapFonts[0] == "res3");
-      REQUIRE(worker.images.size() == 1);
-      REQUIRE(worker.images[0] == "res1");
-      REQUIRE(worker.audios.size() == 1);
-      REQUIRE(worker.audios[0] == "res4");
-    }
-
-    SECTION("Can find resource usages in event-based behavior functions") {
-      gd::Project project;
-      gd::Platform platform;
-      SetupProjectWithDummyPlatform(project, platform);
-
-      project.GetResourcesManager().AddResource(
-          "res1", "path/to/file1.png", "image");
-      project.GetResourcesManager().AddResource(
-          "res2", "path/to/file2.png", "image");
-      project.GetResourcesManager().AddResource(
-          "res3", "path/to/file3.png", "image");
-      ArbitraryResourceWorkerTest worker(project.GetResourcesManager());
-
-      auto& extension = project.InsertNewEventsFunctionsExtension("MyEventExtension", 0);
-      auto& behavior = extension.GetEventsBasedBehaviors().InsertNew("MyBehavior", 0);
-      auto& function = behavior.GetEventsFunctions().InsertNewEventsFunction("MyFunction", 0);
-      
-      gd::StandardEvent standardEvent;
-      gd::Instruction instruction;
-      instruction.SetType("MyExtension::DoSomethingWithResources");
-      instruction.SetParametersCount(3);
-      instruction.SetParameter(0, "res3");
-      instruction.SetParameter(1, "res1");
-      instruction.SetParameter(2, "res4");
-      standardEvent.GetActions().Insert(instruction);
-      function.GetEvents().InsertEvent(standardEvent);
-
-      auto& layout = project.InsertNewLayout("MyScene", 0);
-
-      // MyEventExtension::MyBehavior::MyFunction doesn't need to be actually used in
-      // events because the implementation is naive.
-
-      gd::ResourceExposer::ExposeLayoutResources(project, layout, worker);
-      REQUIRE(worker.bitmapFonts.size() == 1);
-      REQUIRE(worker.bitmapFonts[0] == "res3");
-      REQUIRE(worker.images.size() == 1);
-      REQUIRE(worker.images[0] == "res1");
-      REQUIRE(worker.audios.size() == 1);
-      REQUIRE(worker.audios[0] == "res4");
-    }
-
-    SECTION("Can find resource usages in event-based object functions") {
-      gd::Project project;
-      gd::Platform platform;
-      SetupProjectWithDummyPlatform(project, platform);
-
-      project.GetResourcesManager().AddResource(
-          "res1", "path/to/file1.png", "image");
-      project.GetResourcesManager().AddResource(
-          "res2", "path/to/file2.png", "image");
-      project.GetResourcesManager().AddResource(
-          "res3", "path/to/file3.png", "image");
-      ArbitraryResourceWorkerTest worker(project.GetResourcesManager());
-
-      auto& extension = project.InsertNewEventsFunctionsExtension("MyEventExtension", 0);
-      auto& object = extension.GetEventsBasedObjects().InsertNew("MyObject", 0);
-      auto& function = object.GetEventsFunctions().InsertNewEventsFunction("MyFunction", 0);
-      
-      gd::StandardEvent standardEvent;
-      gd::Instruction instruction;
-      instruction.SetType("MyExtension::DoSomethingWithResources");
-      instruction.SetParametersCount(3);
-      instruction.SetParameter(0, "res3");
-      instruction.SetParameter(1, "res1");
-      instruction.SetParameter(2, "res4");
-      standardEvent.GetActions().Insert(instruction);
-      function.GetEvents().InsertEvent(standardEvent);
-
-      auto& layout = project.InsertNewLayout("MyScene", 0);
-
-      // MyEventExtension::MyObject::MyFunction doesn't need to be actually used in
-      // events because the implementation is naive.
-
-      gd::ResourceExposer::ExposeLayoutResources(project, layout, worker);
-      REQUIRE(worker.bitmapFonts.size() == 1);
-      REQUIRE(worker.bitmapFonts[0] == "res3");
-      REQUIRE(worker.images.size() == 1);
-      REQUIRE(worker.images[0] == "res1");
-      REQUIRE(worker.audios.size() == 1);
-      REQUIRE(worker.audios[0] == "res4");
-    }
-
     SECTION("Can find resource usages in layer effects") {
       gd::Project project;
       gd::Platform platform;

Core/tests/PropertyFunctionGenerator.cpp

@@ -139,8 +139,8 @@ TEST_CASE("PropertyFunctionGenerator", "[common]") {
         .SetLabel("Dot shape")
         .SetDescription("The shape is used for collision.")
         .SetGroup("Movement");
-    property.GetExtraInfo().push_back("Dot shape");
-    property.GetExtraInfo().push_back("Bounding disk");
+    property.AddChoice("DotShape", "Dot shape");
+    property.AddChoice("BoundingDisk", "Bounding disk");
 
     gd::PropertyFunctionGenerator::GenerateBehaviorGetterAndSetter(
         project, extension, behavior, property, false);
@@ -157,7 +157,7 @@ TEST_CASE("PropertyFunctionGenerator", "[common]") {
             gd::EventsFunction::ExpressionAndCondition);
     REQUIRE(getter.GetExpressionType().GetName() == "stringWithSelector");
     REQUIRE(getter.GetExpressionType().GetExtraInfo() ==
-            "[\"Dot shape\",\"Bounding disk\"]");
+            "[\"DotShape\",\"BoundingDisk\"]");
   }
 
   SECTION("Can generate functions for a boolean property in a behavior") {
@@ -386,8 +386,8 @@ TEST_CASE("PropertyFunctionGenerator", "[common]") {
         .SetLabel("Dot shape")
         .SetDescription("The shape is used for collision.")
         .SetGroup("Movement");
-    property.GetExtraInfo().push_back("Dot shape");
-    property.GetExtraInfo().push_back("Bounding disk");
+    property.AddChoice("DotShape", "Dot shape");
+    property.AddChoice("BoundingDisk", "Bounding disk");
 
     gd::PropertyFunctionGenerator::GenerateObjectGetterAndSetter(
         project, extension, object, property);
@@ -404,7 +404,7 @@ TEST_CASE("PropertyFunctionGenerator", "[common]") {
             gd::EventsFunction::ExpressionAndCondition);
     REQUIRE(getter.GetExpressionType().GetName() == "stringWithSelector");
     REQUIRE(getter.GetExpressionType().GetExtraInfo() ==
-            "[\"Dot shape\",\"Bounding disk\"]");
+            "[\"DotShape\",\"BoundingDisk\"]");
   }
 
   SECTION("Can generate functions for a boolean property in an object") {

Extensions/3D/A_RuntimeObject3D.ts

@@ -97,6 +97,14 @@ namespace gdjs {
       oldObjectData: Object3DData,
       newObjectData: Object3DData
     ): boolean {
+      this.updateOriginalDimensionsFromObjectData(oldObjectData, newObjectData);
+      return true;
+    }
+
+    updateOriginalDimensionsFromObjectData(
+      oldObjectData: Object3DData,
+      newObjectData: Object3DData
+    ): void {
       // There is no need to check if they changed because events can't modify them.
       this._setOriginalWidth(
         getValidDimensionValue(newObjectData.content.width)
@@ -107,12 +115,13 @@ namespace gdjs {
       this._setOriginalDepth(
         getValidDimensionValue(newObjectData.content.depth)
       );
-      return true;
     }
 
-    getNetworkSyncData(): Object3DNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): Object3DNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         z: this.getZ(),
         d: this.getDepth(),
         rx: this.getRotationX(),
@@ -123,8 +132,11 @@ namespace gdjs {
       };
     }
 
-    updateFromNetworkSyncData(networkSyncData: Object3DNetworkSyncData) {
-      super.updateFromNetworkSyncData(networkSyncData);
+    updateFromNetworkSyncData(
+      networkSyncData: Object3DNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
+    ) {
+      super.updateFromNetworkSyncData(networkSyncData, options);
       if (networkSyncData.z !== undefined) this.setZ(networkSyncData.z);
       if (networkSyncData.d !== undefined) this.setDepth(networkSyncData.d);
       if (networkSyncData.rx !== undefined)

Extensions/3D/Cube3DRuntimeObject.ts

@@ -452,9 +452,11 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): Cube3DObjectNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): Cube3DObjectNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         mt: this._materialType,
         fo: this._facesOrientation,
         bfu: this._backFaceUpThroughWhichAxisRotation,
@@ -466,9 +468,10 @@ namespace gdjs {
     }
 
     updateFromNetworkSyncData(
-      networkSyncData: Cube3DObjectNetworkSyncData
+      networkSyncData: Cube3DObjectNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       if (networkSyncData.mt !== undefined) {
         this._materialType = networkSyncData.mt;

Extensions/3D/CustomRuntimeObject3D.ts

@@ -1,12 +1,16 @@
 namespace gdjs {
-  type CustomObject3DNetworkSyncDataType = CustomObjectNetworkSyncDataType & {
+  type CustomObject3DNetworkSyncDataType = {
     z: float;
     d: float;
     rx: float;
     ry: float;
     ifz: boolean;
+    ccz: float;
   };
 
+  type CustomObject3DNetworkSyncData = CustomObjectNetworkSyncData &
+    CustomObject3DNetworkSyncDataType;
+
   /**
    * Base class for 3D custom objects.
    */
@@ -85,21 +89,25 @@ namespace gdjs {
       }
     }
 
-    getNetworkSyncData(): CustomObject3DNetworkSyncDataType {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): CustomObject3DNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         z: this.getZ(),
         d: this.getDepth(),
         rx: this.getRotationX(),
         ry: this.getRotationY(),
         ifz: this.isFlippedZ(),
+        ccz: this._customCenterZ,
       };
     }
 
     updateFromNetworkSyncData(
-      networkSyncData: CustomObject3DNetworkSyncDataType
+      networkSyncData: CustomObject3DNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
       if (networkSyncData.z !== undefined) this.setZ(networkSyncData.z);
       if (networkSyncData.d !== undefined) this.setDepth(networkSyncData.d);
       if (networkSyncData.rx !== undefined)
@@ -107,6 +115,8 @@ namespace gdjs {
       if (networkSyncData.ry !== undefined)
         this.setRotationY(networkSyncData.ry);
       if (networkSyncData.ifz !== undefined) this.flipZ(networkSyncData.ifz);
+      if (networkSyncData.ccz !== undefined)
+        this._customCenterZ = networkSyncData.ccz;
     }
 
     /**

Extensions/3D/JsExtension.js

@@ -162,7 +162,12 @@ module.exports = {
         )
         .addParameter('object', _('3D object'), '', false)
         .addParameter('behavior', _('Behavior'), 'Base3DBehavior')
-        .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+        .useStandardParameters(
+          'number',
+          gd.ParameterOptions.makeNewOptions().setDescription(
+            _('Angle (in degrees)')
+          )
+        )
         .setFunctionName('setRotationX')
         .setGetter('getRotationX');
 
@@ -178,7 +183,12 @@ module.exports = {
         )
         .addParameter('object', _('3D object'), '', false)
         .addParameter('behavior', _('Behavior'), 'Base3DBehavior')
-        .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+        .useStandardParameters(
+          'number',
+          gd.ParameterOptions.makeNewOptions().setDescription(
+            _('Angle (in degrees)')
+          )
+        )
         .setFunctionName('setRotationY')
         .setGetter('getRotationY');
 
@@ -196,7 +206,7 @@ module.exports = {
         )
         .addParameter('object', _('3D object'), '', false)
         .addParameter('behavior', _('Behavior'), 'Base3DBehavior')
-        .addParameter('number', _('Rotation angle'), '', false)
+        .addParameter('number', _('Angle to add (in degrees)'), '', false)
         .markAsAdvanced()
         .setFunctionName('turnAroundX');
 
@@ -214,7 +224,7 @@ module.exports = {
         )
         .addParameter('object', _('3D object'), '', false)
         .addParameter('behavior', _('Behavior'), 'Base3DBehavior')
-        .addParameter('number', _('Rotation angle'), '', false)
+        .addParameter('number', _('Angle to add (in degrees)'), '', false)
         .markAsAdvanced()
         .setFunctionName('turnAroundY');
 
@@ -232,7 +242,7 @@ module.exports = {
         )
         .addParameter('object', _('3D object'), '', false)
         .addParameter('behavior', _('Behavior'), 'Base3DBehavior')
-        .addParameter('number', _('Rotation angle'), '', false)
+        .addParameter('number', _('Angle to add (in degrees)'), '', false)
         .markAsAdvanced()
         .setFunctionName('turnAroundZ');
     }
@@ -242,7 +252,7 @@ module.exports = {
         .addObject(
           'Model3DObject',
           _('3D Model'),
-          _('An animated 3D model.'),
+          _('An animated 3D model, useful for most elements of a 3D game.'),
           'JsPlatform/Extensions/3d_model.svg',
           new gd.Model3DObjectConfiguration()
         )
@@ -594,7 +604,12 @@ module.exports = {
           'res/conditions/3d_box.svg'
         )
         .addParameter('object', _('3D model'), 'Model3DObject', false)
-        .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+        .useStandardParameters(
+          'number',
+          gd.ParameterOptions.makeNewOptions().setDescription(
+            _('Angle (in degrees)')
+          )
+        )
         .setHidden()
         .setFunctionName('setRotationX')
         .setGetter('getRotationX');
@@ -611,7 +626,12 @@ module.exports = {
           'res/conditions/3d_box.svg'
         )
         .addParameter('object', _('3D model'), 'Model3DObject', false)
-        .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+        .useStandardParameters(
+          'number',
+          gd.ParameterOptions.makeNewOptions().setDescription(
+            _('Angle (in degrees)')
+          )
+        )
         .setHidden()
         .setFunctionName('setRotationY')
         .setGetter('getRotationY');
@@ -630,7 +650,7 @@ module.exports = {
           'res/conditions/3d_box.svg'
         )
         .addParameter('object', _('3D model'), 'Model3DObject', false)
-        .addParameter('number', _('Rotation angle'), '', false)
+        .addParameter('number', _('Angle to add (in degrees)'), '', false)
         .markAsAdvanced()
         .setHidden()
         .setFunctionName('turnAroundX');
@@ -649,7 +669,7 @@ module.exports = {
           'res/conditions/3d_box.svg'
         )
         .addParameter('object', _('3D model'), 'Model3DObject', false)
-        .addParameter('number', _('Rotation angle'), '', false)
+        .addParameter('number', _('Angle to add (in degrees)'), '', false)
         .markAsAdvanced()
         .setHidden()
         .setFunctionName('turnAroundY');
@@ -668,7 +688,7 @@ module.exports = {
           'res/conditions/3d_box.svg'
         )
         .addParameter('object', _('3D model'), 'Model3DObject', false)
-        .addParameter('number', _('Rotation angle'), '', false)
+        .addParameter('number', _('Angle to add (in degrees)'), '', false)
         .markAsAdvanced()
         .setHidden()
         .setFunctionName('turnAroundZ');
@@ -1125,7 +1145,7 @@ module.exports = {
       topFaceResourceName: '',
       bottomFaceResourceName: '',
       frontFaceVisible: true,
-      backFaceVisible: false,
+      backFaceVisible: true,
       leftFaceVisible: true,
       rightFaceVisible: true,
       topFaceVisible: true,
@@ -1493,7 +1513,12 @@ module.exports = {
         'res/conditions/3d_box.svg'
       )
       .addParameter('object', _('3D cube'), 'Cube3DObject', false)
-      .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+      .useStandardParameters(
+        'number',
+        gd.ParameterOptions.makeNewOptions().setDescription(
+          _('Angle (in degrees)')
+        )
+      )
       .setFunctionName('setRotationX')
       .setHidden()
       .setGetter('getRotationX');
@@ -1510,7 +1535,12 @@ module.exports = {
         'res/conditions/3d_box.svg'
       )
       .addParameter('object', _('3D cube'), 'Cube3DObject', false)
-      .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+      .useStandardParameters(
+        'number',
+        gd.ParameterOptions.makeNewOptions().setDescription(
+          _('Angle (in degrees)')
+        )
+      )
       .setFunctionName('setRotationY')
       .setHidden()
       .setGetter('getRotationY');
@@ -1871,6 +1901,11 @@ module.exports = {
         .getOrCreate('density')
         .setValue('0.0012')
         .setLabel(_('Density'))
+        .setDescription(
+          _(
+            'Density of the fog. Usual values are between 0.0005 (far away) and 0.005 (very thick fog).'
+          )
+        )
         .setType('number');
     }
     {
@@ -1878,7 +1913,9 @@ module.exports = {
         .addEffect('AmbientLight')
         .setFullName(_('Ambient light'))
         .setDescription(
-          _('A light that illuminates all objects from every direction.')
+          _(
+            'A light that illuminates all objects from every direction. Often used along with a Directional light (though a Hemisphere light can be used instead of an Ambient light).'
+          )
         )
         .markAsNotWorkingForObjects()
         .markAsOnlyWorkingFor3D()
@@ -1899,7 +1936,11 @@ module.exports = {
       const effect = extension
         .addEffect('DirectionalLight')
         .setFullName(_('Directional light'))
-        .setDescription(_('A very far light source like the sun.'))
+        .setDescription(
+          _(
+            "A very far light source like the sun. This is the light to use for casting shadows for 3D objects (other lights won't emit shadows). Often used along with a Hemisphere light."
+          )
+        )
         .markAsNotWorkingForObjects()
         .markAsOnlyWorkingFor3D()
         .addIncludeFile('Extensions/3D/DirectionalLight.js');
@@ -1983,7 +2024,7 @@ module.exports = {
         .setFullName(_('Hemisphere light'))
         .setDescription(
           _(
-            'A light that illuminates objects from every direction with a gradient.'
+            'A light that illuminates objects from every direction with a gradient. Often used along with a Directional light.'
           )
         )
         .markAsNotWorkingForObjects()
@@ -2027,6 +2068,48 @@ module.exports = {
         .setType('number')
         .setGroup(_('Orientation'));
     }
+    {
+      const effect = extension
+        .addEffect('Skybox')
+        .setFullName(_('Skybox'))
+        .setDescription(
+          _('Display a background on a cube surrounding the scene.')
+        )
+        .markAsNotWorkingForObjects()
+        .markAsOnlyWorkingFor3D()
+        .addIncludeFile('Extensions/3D/Skybox.js');
+      const properties = effect.getProperties();
+      properties
+        .getOrCreate('rightFaceResourceName')
+        .setType('resource')
+        .addExtraInfo('image')
+        .setLabel(_('Right face (X+)'));
+      properties
+        .getOrCreate('leftFaceResourceName')
+        .setType('resource')
+        .addExtraInfo('image')
+        .setLabel(_('Left face (X-)'));
+      properties
+        .getOrCreate('bottomFaceResourceName')
+        .setType('resource')
+        .addExtraInfo('image')
+        .setLabel(_('Bottom face (Y+)'));
+      properties
+        .getOrCreate('topFaceResourceName')
+        .setType('resource')
+        .addExtraInfo('image')
+        .setLabel(_('Top face (Y-)'));
+      properties
+        .getOrCreate('frontFaceResourceName')
+        .setType('resource')
+        .addExtraInfo('image')
+        .setLabel(_('Front face (Z+)'));
+      properties
+        .getOrCreate('backFaceResourceName')
+        .setType('resource')
+        .addExtraInfo('image')
+        .setLabel(_('Back face (Z-)'));
+    }
     {
       const effect = extension
         .addEffect('HueAndSaturation')

Extensions/3D/Model3DRuntimeObject.ts

@@ -8,6 +8,7 @@ namespace gdjs {
     anis: Model3DAnimation[];
     ai: integer;
     ass: float;
+    aet: float;
     ap: boolean;
     cfd: float;
   };
@@ -152,6 +153,14 @@ namespace gdjs {
       }
     }
 
+    override updateOriginalDimensionsFromObjectData(
+      oldObjectData: Object3DData,
+      newObjectData: Object3DData
+    ): void {
+      // Original dimensions must not be reset by `super.updateFromObjectData`.
+      // `_updateModel` has a different logic to evaluate them using `keepAspectRatio`.
+    }
+
     updateFromObjectData(
       oldObjectData: Model3DObjectData,
       newObjectData: Model3DObjectData
@@ -181,8 +190,14 @@ namespace gdjs {
         oldObjectData.content.keepAspectRatio !==
           newObjectData.content.keepAspectRatio ||
         oldObjectData.content.materialType !==
-          newObjectData.content.materialType
+          newObjectData.content.materialType ||
+        oldObjectData.content.centerLocation !==
+          newObjectData.content.centerLocation
       ) {
+        // The center is applied to the model by `_updateModel`.
+        this._centerPoint = getPointForLocation(
+          newObjectData.content.centerLocation
+        );
         this._updateModel(newObjectData);
       }
       if (
@@ -192,14 +207,7 @@ namespace gdjs {
         this._originPoint = getPointForLocation(
           newObjectData.content.originLocation
         );
-      }
-      if (
-        oldObjectData.content.centerLocation !==
-        newObjectData.content.centerLocation
-      ) {
-        this._centerPoint = getPointForLocation(
-          newObjectData.content.centerLocation
-        );
+        this._renderer.updatePosition();
       }
       if (
         oldObjectData.content.isCastingShadow !==
@@ -216,24 +224,28 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): Model3DObjectNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): Model3DObjectNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         mt: this._materialType,
         op: this._originPoint,
         cp: this._centerPoint,
         anis: this._animations,
         ai: this._currentAnimationIndex,
         ass: this._animationSpeedScale,
+        aet: this.getAnimationElapsedTime(),
         ap: this._animationPaused,
         cfd: this._crossfadeDuration,
       };
     }
 
     updateFromNetworkSyncData(
-      networkSyncData: Model3DObjectNetworkSyncData
+      networkSyncData: Model3DObjectNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       if (networkSyncData.mt !== undefined) {
         this._materialType = networkSyncData.mt;
@@ -247,11 +259,14 @@ namespace gdjs {
       if (networkSyncData.anis !== undefined) {
         this._animations = networkSyncData.anis;
       }
+      if (networkSyncData.ass !== undefined) {
+        this.setAnimationSpeedScale(networkSyncData.ass);
+      }
       if (networkSyncData.ai !== undefined) {
         this.setAnimationIndex(networkSyncData.ai);
       }
-      if (networkSyncData.ass !== undefined) {
-        this.setAnimationSpeedScale(networkSyncData.ass);
+      if (networkSyncData.aet !== undefined) {
+        this.setAnimationElapsedTime(networkSyncData.aet);
       }
       if (networkSyncData.ap !== undefined) {
         if (networkSyncData.ap !== this.isAnimationPaused()) {
@@ -273,14 +288,17 @@ namespace gdjs {
       const rotationX = objectData.content.rotationX || 0;
       const rotationY = objectData.content.rotationY || 0;
       const rotationZ = objectData.content.rotationZ || 0;
+      const width = objectData.content.width || 100;
+      const height = objectData.content.height || 100;
+      const depth = objectData.content.depth || 100;
       const keepAspectRatio = objectData.content.keepAspectRatio;
       this._renderer._updateModel(
         rotationX,
         rotationY,
         rotationZ,
-        this._getOriginalWidth(),
-        this._getOriginalHeight(),
-        this._getOriginalDepth(),
+        width,
+        height,
+        depth,
         keepAspectRatio
       );
     }

Extensions/3D/Model3DRuntimeObject3DRenderer.ts

@@ -233,6 +233,10 @@ namespace gdjs {
         this._object._setOriginalWidth(scaleRatio * modelWidth);
         this._object._setOriginalHeight(scaleRatio * modelHeight);
         this._object._setOriginalDepth(scaleRatio * modelDepth);
+      } else {
+        this._object._setOriginalWidth(originalWidth);
+        this._object._setOriginalHeight(originalHeight);
+        this._object._setOriginalDepth(originalDepth);
       }
     }
 
@@ -286,6 +290,7 @@ namespace gdjs {
       this.get3DRendererObject().remove(this._threeObject);
       this.get3DRendererObject().add(threeObject);
       this._threeObject = threeObject;
+      this.updatePosition();
       this._updateShadow();
 
       // Start the current animation on the new 3D object.

Extensions/3D/Skybox.ts

@@ -0,0 +1,102 @@
+namespace gdjs {
+  interface SkyboxFilterNetworkSyncData {}
+  gdjs.PixiFiltersTools.registerFilterCreator(
+    'Scene3D::Skybox',
+    new (class implements gdjs.PixiFiltersTools.FilterCreator {
+      makeFilter(
+        target: EffectsTarget,
+        effectData: EffectData
+      ): gdjs.PixiFiltersTools.Filter {
+        if (typeof THREE === 'undefined') {
+          return new gdjs.PixiFiltersTools.EmptyFilter();
+        }
+        return new (class implements gdjs.PixiFiltersTools.Filter {
+          _cubeTexture: THREE.CubeTexture;
+          _oldBackground:
+            | THREE.CubeTexture
+            | THREE.Texture
+            | THREE.Color
+            | null = null;
+          _isEnabled: boolean = false;
+
+          constructor() {
+            this._cubeTexture = target
+              .getRuntimeScene()
+              .getGame()
+              .getImageManager()
+              .getThreeCubeTexture(
+                effectData.stringParameters.rightFaceResourceName,
+                effectData.stringParameters.leftFaceResourceName,
+                effectData.stringParameters.topFaceResourceName,
+                effectData.stringParameters.bottomFaceResourceName,
+                effectData.stringParameters.frontFaceResourceName,
+                effectData.stringParameters.backFaceResourceName
+              );
+          }
+
+          isEnabled(target: EffectsTarget): boolean {
+            return this._isEnabled;
+          }
+          setEnabled(target: EffectsTarget, enabled: boolean): boolean {
+            if (this._isEnabled === enabled) {
+              return true;
+            }
+            if (enabled) {
+              return this.applyEffect(target);
+            } else {
+              return this.removeEffect(target);
+            }
+          }
+          applyEffect(target: EffectsTarget): boolean {
+            const scene = target.get3DRendererObject() as
+              | THREE.Scene
+              | null
+              | undefined;
+            if (!scene) {
+              return false;
+            }
+            // TODO Add a background stack in LayerPixiRenderer to allow
+            // filters to stack them.
+            this._oldBackground = scene.background;
+            scene.background = this._cubeTexture;
+            if (!scene.environment) {
+              scene.environment = this._cubeTexture;
+            }
+            this._isEnabled = true;
+            return true;
+          }
+          removeEffect(target: EffectsTarget): boolean {
+            const scene = target.get3DRendererObject() as
+              | THREE.Scene
+              | null
+              | undefined;
+            if (!scene) {
+              return false;
+            }
+            scene.background = this._oldBackground;
+            scene.environment = null;
+            this._isEnabled = false;
+            return true;
+          }
+          updatePreRender(target: gdjs.EffectsTarget): any {}
+          updateDoubleParameter(parameterName: string, value: number): void {}
+          getDoubleParameter(parameterName: string): number {
+            return 0;
+          }
+          updateStringParameter(parameterName: string, value: string): void {}
+          updateColorParameter(parameterName: string, value: number): void {}
+          getColorParameter(parameterName: string): number {
+            return 0;
+          }
+          updateBooleanParameter(parameterName: string, value: boolean): void {}
+          getNetworkSyncData(): SkyboxFilterNetworkSyncData {
+            return {};
+          }
+          updateFromNetworkSyncData(
+            syncData: SkyboxFilterNetworkSyncData
+          ): void {}
+        })();
+      }
+    })()
+  );
+}

Extensions/AnchorBehavior/anchorruntimebehavior.ts

@@ -473,7 +473,14 @@ namespace gdjs {
       this._parentOldMaxY = instanceContainer.getUnrotatedViewportMaxY();
     }
 
-    doStepPostEvents(instanceContainer: gdjs.RuntimeInstanceContainer) {}
+    doStepPostEvents(instanceContainer: gdjs.RuntimeInstanceContainer) {
+      // Custom objects can be resized during the events step.
+      // The anchor constraints must be applied on child-objects after the parent events.
+      const isChildObject = instanceContainer !== instanceContainer.getScene();
+      if (isChildObject) {
+        this.doStepPreEvents(instanceContainer);
+      }
+    }
 
     private _convertCoords(
       instanceContainer: gdjs.RuntimeInstanceContainer,

Extensions/BBText/JsExtension.js

@@ -508,7 +508,7 @@ module.exports = {
         associatedObjectConfiguration,
         pixiContainer,
         pixiResourcesLoader,
-        propertyOverridings
+        getPropertyOverridings
       ) {
         super(
           project,
@@ -516,7 +516,7 @@ module.exports = {
           associatedObjectConfiguration,
           pixiContainer,
           pixiResourcesLoader,
-          propertyOverridings
+          getPropertyOverridings
         );
 
         const bbTextStyles = {
@@ -555,8 +555,10 @@ module.exports = {
           gd.ObjectJsImplementation
         );
 
-        const rawText = this._propertyOverridings.has('Text')
-          ? this._propertyOverridings.get('Text')
+        const propertyOverridings = this.getPropertyOverridings();
+        const rawText =
+          propertyOverridings && propertyOverridings.has('Text')
+            ? propertyOverridings.get('Text')
             : object.content.text;
         if (rawText !== this._pixiObject.text) {
           this._pixiObject.text = rawText;

Extensions/BBText/bbtextruntimeobject.ts

@@ -145,9 +145,11 @@ namespace gdjs {
       return true;
     }
 
-    override getNetworkSyncData(): BBTextObjectNetworkSyncData {
+    override getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): BBTextObjectNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         text: this._text,
         o: this._opacity,
         c: this._color,
@@ -162,9 +164,10 @@ namespace gdjs {
     }
 
     override updateFromNetworkSyncData(
-      networkSyncData: BBTextObjectNetworkSyncData
+      networkSyncData: BBTextObjectNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
       if (this._text !== undefined) {
         this.setBBText(networkSyncData.text);
       }
@@ -383,6 +386,10 @@ namespace gdjs {
       return this._renderer.getHeight();
     }
 
+    override setWidth(width: float): void {
+      this.setWrappingWidth(width);
+    }
+
     override getDrawableY(): float {
       return (
         this.getY() -

Extensions/BitmapText/JsExtension.js

@@ -631,7 +631,7 @@ module.exports = {
         associatedObjectConfiguration,
         pixiContainer,
         pixiResourcesLoader,
-        propertyOverridings
+        getPropertyOverridings
       ) {
         super(
           project,
@@ -639,7 +639,7 @@ module.exports = {
           associatedObjectConfiguration,
           pixiContainer,
           pixiResourcesLoader,
-          propertyOverridings
+          getPropertyOverridings
         );
 
         // We'll track changes of the font to trigger the loading of the new font.
@@ -665,8 +665,10 @@ module.exports = {
 
         // Update the rendered text properties (note: Pixi is only
         // applying changes if there were changed).
-        this._pixiObject.text = this._propertyOverridings.has('Text')
-          ? this._propertyOverridings.get('Text')
+        const propertyOverridings = this.getPropertyOverridings();
+        this._pixiObject.text =
+          propertyOverridings && propertyOverridings.has('Text')
+            ? propertyOverridings.get('Text')
             : object.content.text;
 
         const align = object.content.align;

Extensions/BitmapText/bitmaptextruntimeobject.ts

@@ -155,9 +155,11 @@ namespace gdjs {
       return true;
     }
 
-    override getNetworkSyncData(): BitmapTextObjectNetworkSyncData {
+    override getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): BitmapTextObjectNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         text: this._text,
         opa: this._opacity,
         tint: this._tint,
@@ -172,9 +174,10 @@ namespace gdjs {
     }
 
     override updateFromNetworkSyncData(
-      networkSyncData: BitmapTextObjectNetworkSyncData
+      networkSyncData: BitmapTextObjectNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
       if (this._text !== undefined) {
         this.setText(networkSyncData.text);
       }
@@ -426,6 +429,10 @@ namespace gdjs {
       return this._renderer.getHeight();
     }
 
+    override setWidth(width: float): void {
+      this.setWrappingWidth(width);
+    }
+
     override getDrawableY(): float {
       return (
         this.getY() -

Extensions/DebuggerTools/JsExtension.js

@@ -21,7 +21,9 @@ module.exports = {
       .setExtensionInformation(
         'DebuggerTools',
         _('Debugger Tools'),
-        _('Allow to interact with the editor debugger from the game.'),
+        _(
+          'Allow to interact with the editor debugger from the game (notably: enable 2D debug draw, log a message in the debugger console).'
+        ),
         'Arthur Pacaud (arthuro555), Aurélien Vivet (Bouh)',
         'MIT'
       )

Extensions/DestroyOutsideBehavior/DestroyOutsideBehavior.cpp

@@ -12,7 +12,8 @@ This project is released under the MIT License.
 #include "GDCore/Tools/Localization.h"
 
 void DestroyOutsideBehavior::InitializeContent(gd::SerializerElement& content) {
-  content.SetAttribute("extraBorder", 300);
+  content.SetAttribute("extraBorder", 200);
+  content.SetAttribute("unseenGraceDistance", 10000);
 }
 
 #if defined(GD_IDE_ONLY)
@@ -27,7 +28,15 @@ DestroyOutsideBehavior::GetProperties(
       .SetType("Number")
       .SetMeasurementUnit(gd::MeasurementUnit::GetPixel())
       .SetLabel(_("Deletion margin"))
-      .SetDescription(_("Margin before deleting the object, in pixels"));
+      .SetDescription(_("Margin before deleting the object, in pixels."));
+
+  properties["unseenGraceDistance"]
+      .SetValue(gd::String::From(
+          behaviorContent.GetDoubleAttribute("unseenGraceDistance", 0)))
+      .SetType("Number")
+      .SetMeasurementUnit(gd::MeasurementUnit::GetPixel())
+      .SetLabel(_("Unseen object grace distance"))
+      .SetDescription(_("If the object hasn't been visible yet, don't delete it until it travels this far beyond the screen (in pixels). Useful to avoid objects being deleted before they are visible when they spawn."));
 
   return properties;
 }
@@ -38,6 +47,8 @@ bool DestroyOutsideBehavior::UpdateProperty(
     const gd::String& value) {
   if (name == "extraBorder")
     behaviorContent.SetAttribute("extraBorder", value.To<double>());
+  else if (name == "unseenGraceDistance")
+    behaviorContent.SetAttribute("unseenGraceDistance", value.To<double>());
   else
     return false;
 

Extensions/DestroyOutsideBehavior/Extension.cpp

@@ -6,6 +6,7 @@ This project is released under the MIT License.
 */
 
 #include "DestroyOutsideBehavior.h"
+#include "GDCore/Extensions/Metadata/MultipleInstructionMetadata.h"
 #include "GDCore/Extensions/PlatformExtension.h"
 #include "GDCore/Project/BehaviorsSharedData.h"
 #include "GDCore/Tools/Localization.h"
@@ -19,11 +20,10 @@ void DeclareDestroyOutsideBehaviorExtension(gd::PlatformExtension& extension) {
             "outside of the bounds of the 2D camera. Useful for 2D bullets or "
             "other short-lived objects. Don't use it for 3D objects in a "
             "FPS/TPS game or any game with a camera not being a top view "
-            "(for 3D objects, prefer comparing "
-            "the position, for example Z position to see if an object goes "
-            "outside of the bound of the map). Be careful when using this "
-            "behavior because if the object appears outside of the screen, it "
-            "will be immediately removed."),
+            "(for 3D objects, prefer comparing the position, for example Z "
+            "position to see if an object goes outside of the bound of the "
+            "map). If the object appears outside of the screen, it's not "
+            "removed unless it goes beyond the unseen object grace distance."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetCategory("Game mechanic")
@@ -44,34 +44,39 @@ void DeclareDestroyOutsideBehaviorExtension(gd::PlatformExtension& extension) {
                        std::shared_ptr<gd::BehaviorsSharedData>())
           .SetQuickCustomizationVisibility(gd::QuickCustomization::Hidden);
 
-  aut.AddCondition("ExtraBorder",
+  aut.AddExpressionAndConditionAndAction(
+         "number",
+         "ExtraBorder",
          _("Additional border (extra distance before deletion)"),
-                   _("Compare the extra distance (in pixels) the object must "
-                     "travel beyond the screen before it gets deleted."),
+         _("the extra distance (in pixels) the object must "
+           "travel beyond the screen before it gets deleted"),
          _("the additional border"),
          _("Destroy outside configuration"),
-                   "CppPlatform/Extensions/destroyoutsideicon24.png",
-                   "CppPlatform/Extensions/destroyoutsideicon16.png")
+         "CppPlatform/Extensions/destroyoutsideicon24.png")
       .AddParameter("object", _("Object"))
       .AddParameter("behavior", _("Behavior"), "DestroyOutside")
-      .UseStandardRelationalOperatorParameters(
-          "number", gd::ParameterOptions::MakeNewOptions())
-      .MarkAsAdvanced()
-      .SetFunctionName("GetExtraBorder");
+      .UseStandardParameters("number", gd::ParameterOptions::MakeNewOptions())
+      .MarkAsAdvanced();
 
-  aut.AddAction("ExtraBorder",
-                _("Additional border (extra distance before deletion)"),
-                _("Change the extra distance (in pixels) the object must "
-                  "travel beyond the screen before it gets deleted."),
-                _("the additional border"),
+  // Deprecated:
+  aut.AddDuplicatedAction("ExtraBorder", "DestroyOutside::SetExtraBorder")
+      .SetHidden();
+  aut.AddDuplicatedCondition("ExtraBorder", "DestroyOutside::ExtraBorder")
+      .SetHidden();
+
+  aut.AddExpressionAndConditionAndAction(
+         "number",
+         "UnseenGraceDistance",
+         _("Unseen object grace distance"),
+         _("the grace distance (in pixels) before deleting the object if it "
+           "has "
+           "never been visible on the screen. Useful to avoid objects being "
+           "deleted before they are visible when they spawn"),
+         _("the unseen grace distance"),
          _("Destroy outside configuration"),
-                "CppPlatform/Extensions/destroyoutsideicon24.png",
-                "CppPlatform/Extensions/destroyoutsideicon16.png")
+         "CppPlatform/Extensions/destroyoutsideicon24.png")
       .AddParameter("object", _("Object"))
       .AddParameter("behavior", _("Behavior"), "DestroyOutside")
-      .UseStandardOperatorParameters("number",
-                                     gd::ParameterOptions::MakeNewOptions())
-      .MarkAsAdvanced()
-      .SetFunctionName("SetExtraBorder")
-      .SetGetter("GetExtraBorder");
+      .UseStandardParameters("number", gd::ParameterOptions::MakeNewOptions())
+      .MarkAsAdvanced();
 }

Extensions/DestroyOutsideBehavior/JsExtension.cpp

@@ -5,11 +5,11 @@ Copyright (c) 2014-2016 Florian Rival (Florian.Rival@gmail.com)
 This project is released under the MIT License.
 */
 #if defined(GD_IDE_ONLY)
+#include <iostream>
+
 #include "GDCore/Extensions/PlatformExtension.h"
 #include "GDCore/Tools/Localization.h"
 
-#include <iostream>
-
 void DeclareDestroyOutsideBehaviorExtension(gd::PlatformExtension& extension);
 
 /**
@@ -29,19 +29,36 @@ class DestroyOutsideBehaviorJsExtension : public gd::PlatformExtension {
             "Extensions/DestroyOutsideBehavior/"
             "destroyoutsideruntimebehavior.js");
 
+    GetAllExpressionsForBehavior(
+        "DestroyOutsideBehavior::DestroyOutside")["ExtraBorder"]
+        .SetFunctionName("getExtraBorder");
+    GetAllConditionsForBehavior("DestroyOutsideBehavior::DestroyOutside")
+        ["DestroyOutsideBehavior::DestroyOutside::ExtraBorder"]
+            .SetFunctionName("getExtraBorder");
+    GetAllActionsForBehavior("DestroyOutsideBehavior::DestroyOutside")
+        ["DestroyOutsideBehavior::DestroyOutside::SetExtraBorder"]
+            .SetFunctionName("setExtraBorder")
+            .SetGetter("getExtraBorder");
+
+    // Deprecated:
     GetAllConditionsForBehavior("DestroyOutsideBehavior::DestroyOutside")
         ["DestroyOutsideBehavior::ExtraBorder"]
-            .SetFunctionName("getExtraBorder")
-            .SetIncludeFile(
-                "Extensions/DestroyOutsideBehavior/"
-                "destroyoutsideruntimebehavior.js");
+            .SetFunctionName("getExtraBorder");
     GetAllActionsForBehavior("DestroyOutsideBehavior::DestroyOutside")
         ["DestroyOutsideBehavior::ExtraBorder"]
             .SetFunctionName("setExtraBorder")
-            .SetGetter("getExtraBorder")
-            .SetIncludeFile(
-                "Extensions/DestroyOutsideBehavior/"
-                "destroyoutsideruntimebehavior.js");
+            .SetGetter("getExtraBorder");
+
+    GetAllExpressionsForBehavior(
+        "DestroyOutsideBehavior::DestroyOutside")["UnseenGraceDistance"]
+        .SetFunctionName("getUnseenGraceDistance");
+    GetAllConditionsForBehavior("DestroyOutsideBehavior::DestroyOutside")
+        ["DestroyOutsideBehavior::DestroyOutside::UnseenGraceDistance"]
+            .SetFunctionName("getUnseenGraceDistance");
+    GetAllActionsForBehavior("DestroyOutsideBehavior::DestroyOutside")
+        ["DestroyOutsideBehavior::DestroyOutside::SetUnseenGraceDistance"]
+            .SetFunctionName("setUnseenGraceDistance")
+            .SetGetter("getUnseenGraceDistance");
 
     GD_COMPLETE_EXTENSION_COMPILATION_INFORMATION();
   };

Extensions/DestroyOutsideBehavior/destroyoutsideruntimebehavior.ts

@@ -8,7 +8,9 @@ namespace gdjs {
    * The DestroyOutsideRuntimeBehavior represents a behavior that destroys the object when it leaves the screen.
    */
   export class DestroyOutsideRuntimeBehavior extends gdjs.RuntimeBehavior {
-    _extraBorder: any;
+    _extraBorder: float;
+    _unseenGraceDistance: float;
+    _hasBeenOnScreen: boolean;
 
     constructor(
       instanceContainer: gdjs.RuntimeInstanceContainer,
@@ -17,12 +19,20 @@ namespace gdjs {
     ) {
       super(instanceContainer, behaviorData, owner);
       this._extraBorder = behaviorData.extraBorder || 0;
+      this._unseenGraceDistance = behaviorData.unseenGraceDistance || 0;
+      this._hasBeenOnScreen = false;
     }
 
     updateFromBehaviorData(oldBehaviorData, newBehaviorData): boolean {
       if (oldBehaviorData.extraBorder !== newBehaviorData.extraBorder) {
         this._extraBorder = newBehaviorData.extraBorder;
       }
+      if (
+        oldBehaviorData.unseenGraceDistance !==
+        newBehaviorData.unseenGraceDistance
+      ) {
+        this._unseenGraceDistance = newBehaviorData.unseenGraceDistance;
+      }
       return true;
     }
 
@@ -35,23 +45,47 @@ namespace gdjs {
       const ocy = this.owner.getDrawableY() + this.owner.getCenterY();
       const layer = instanceContainer.getLayer(this.owner.getLayer());
       const boundingCircleRadius = Math.sqrt(ow * ow + oh * oh) / 2.0;
+
+      const cameraLeft = layer.getCameraX() - layer.getCameraWidth() / 2;
+      const cameraRight = layer.getCameraX() + layer.getCameraWidth() / 2;
+      const cameraTop = layer.getCameraY() - layer.getCameraHeight() / 2;
+      const cameraBottom = layer.getCameraY() + layer.getCameraHeight() / 2;
+
       if (
-        ocx + boundingCircleRadius + this._extraBorder <
-          layer.getCameraX() - layer.getCameraWidth() / 2 ||
-        ocx - boundingCircleRadius - this._extraBorder >
-          layer.getCameraX() + layer.getCameraWidth() / 2 ||
-        ocy + boundingCircleRadius + this._extraBorder <
-          layer.getCameraY() - layer.getCameraHeight() / 2 ||
-        ocy - boundingCircleRadius - this._extraBorder >
-          layer.getCameraY() + layer.getCameraHeight() / 2
+        ocx + boundingCircleRadius + this._extraBorder < cameraLeft ||
+        ocx - boundingCircleRadius - this._extraBorder > cameraRight ||
+        ocy + boundingCircleRadius + this._extraBorder < cameraTop ||
+        ocy - boundingCircleRadius - this._extraBorder > cameraBottom
       ) {
-        //We are outside the camera area.
+        if (this._hasBeenOnScreen) {
+          // Object is outside the camera area and object was previously seen inside it:
+          // delete it now.
           this.owner.deleteFromScene();
+        } else if (
+          ocx + boundingCircleRadius + this._unseenGraceDistance < cameraLeft ||
+          ocx - boundingCircleRadius - this._unseenGraceDistance >
+            cameraRight ||
+          ocy + boundingCircleRadius + this._unseenGraceDistance < cameraTop ||
+          ocy - boundingCircleRadius - this._unseenGraceDistance > cameraBottom
+        ) {
+          // Object is outside the camera area and also outside the grace distance:
+          // force deletion.
+          this.owner.deleteFromScene();
+        } else {
+          // Object is outside the camera area but inside the grace distance
+          // and was never seen inside the camera area: don't delete it yet.
+        }
+      } else {
+        this._hasBeenOnScreen = true;
       }
     }
 
     /**
-     * Set an additional border to the camera viewport as a buffer before the object gets destroyed.
+     * Set the additional border outside the camera area.
+     *
+     * If the object goes beyond the camera area and this border, it will be deleted (unless it was
+     * never seen inside the camera area and this border before, in which case it will be deleted
+     * according to the grace distance).
      * @param val Border in pixels.
      */
     setExtraBorder(val: number): void {
@@ -59,12 +93,36 @@ namespace gdjs {
     }
 
     /**
-     * Get the additional border of the camera viewport buffer which triggers the destruction of an object.
+     * Get the additional border outside the camera area.
      * @return The additional border around the camera viewport in pixels
      */
     getExtraBorder(): number {
       return this._extraBorder;
     }
+
+    /**
+     * Change the grace distance before an object is deleted if it's outside the camera area
+     * and was never seen inside the camera area. Typically useful to avoid objects being deleted
+     * before they are visible when they spawn.
+     */
+    setUnseenGraceDistance(val: number): void {
+      this._unseenGraceDistance = val;
+    }
+
+    /**
+     * Get the grace distance before an object is deleted if it's outside the camera area
+     * and was never seen inside the camera area.
+     */
+    getUnseenGraceDistance(): number {
+      return this._unseenGraceDistance;
+    }
+
+    /**
+     * Check if this object has been visible on screen (precisely: inside the camera area *including* the extra border).
+     */
+    hasBeenOnScreen(): boolean {
+      return this._hasBeenOnScreen;
+    }
   }
   gdjs.registerBehavior(
     'DestroyOutsideBehavior::DestroyOutside',

Extensions/FileSystem/JsExtension.js

@@ -21,7 +21,9 @@ module.exports = {
       .setExtensionInformation(
         'FileSystem',
         _('File system'),
-        _('Access the filesystem of the operating system.'),
+        _(
+          'Access the filesystem of the operating system - only works on native, desktop games exported to Windows, Linux or macOS.'
+        ),
         'Matthias Meike',
         'Open source (MIT License)'
       )

Extensions/Inventory/Extension.cpp

@@ -5,23 +5,25 @@ Copyright (c) 2008-2016 Florian Rival (Florian.Rival@gmail.com)
 This project is released under the MIT License.
 */
 
+#include <iostream>
+
 #include "GDCore/Extensions/PlatformExtension.h"
 #include "GDCore/Tools/Localization.h"
 
-#include <iostream>
-
 void DeclareInventoryExtension(gd::PlatformExtension& extension) {
-  extension.SetExtensionInformation(
+  extension
+      .SetExtensionInformation(
           "Inventory",
           _("Inventories"),
-      _("Provides actions and conditions to add an inventory to your game, "
-        "with items in memory."),
+          _("Actions and conditions to store named inventories in memory, "
+            "with items (indexed by their name), a count for each of them, "
+            "a maximum count and an equipped state. Can be loaded/saved "
+            "from/to a GDevelop variable."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetExtensionHelpPath("/all-features/inventory")
       .SetCategory("Game mechanic");
-    extension
-      .AddInstructionOrExpressionGroupMetadata(_("Inventories"))
+  extension.AddInstructionOrExpressionGroupMetadata(_("Inventories"))
       .SetIcon("CppPlatform/Extensions/Inventoryicon.png");
 
   extension
@@ -164,7 +166,8 @@ void DeclareInventoryExtension(gd::PlatformExtension& extension) {
       .SetFunctionName("InventoryTools::IsEquipped");
 
   extension
-      .AddAction("SerializeToVariable",
+      .AddAction(
+          "SerializeToVariable",
           _("Save an inventory in a scene variable"),
           _("Save all the items of the inventory in a scene variable, so that "
             "it can be restored later."),
@@ -206,7 +209,8 @@ void DeclareInventoryExtension(gd::PlatformExtension& extension) {
   extension
       .AddExpression("Maximum",
                      _("Item maximum"),
-		  _("Get the maximum of an item in the inventory, or 0 if it is unlimited"),
+                     _("Get the maximum of an item in the inventory, or 0 if "
+                       "it is unlimited"),
                      "",
                      "CppPlatform/Extensions/Inventoryicon.png")
       .AddCodeOnlyParameter("currentScene", "")

Extensions/JsExtensionTypes.d.ts

@@ -27,7 +27,7 @@ class RenderedInstance {
     associatedObjectConfiguration: gdObjectConfiguration,
     pixiContainer: PIXI.Container,
     pixiResourcesLoader: Class<PixiResourcesLoader>,
-    propertyOverridings: Map<string, string> = new Map<string, string>()
+    getPropertyOverridings: (() => Map<string, string>) | null = null
   );
 
   /**
@@ -80,6 +80,8 @@ class RenderedInstance {
   getDefaultHeight(): number;
 
   getDefaultDepth(): number;
+
+  getPropertyOverridings(): Map<string, string> | null;
 }
 
 /**
@@ -107,7 +109,8 @@ class Rendered3DInstance {
     associatedObjectConfiguration: gdObjectConfiguration,
     pixiContainer: PIXI.Container,
     threeGroup: THREE.Group,
-    pixiResourcesLoader: Class<PixiResourcesLoader>
+    pixiResourcesLoader: Class<PixiResourcesLoader>,
+    getPropertyOverridings: (() => Map<string, string>) | null = null
   );
 
   /**
@@ -174,6 +177,8 @@ class Rendered3DInstance {
    * Return the depth of the instance when the instance doesn't have a custom size.
    */
   getDefaultDepth(): number;
+
+  getPropertyOverridings(): Map<string, string> | null;
 }
 
 declare type ObjectsRenderingService = {

Extensions/Leaderboards/JsExtension.js

@@ -21,7 +21,9 @@ module.exports = {
       .setExtensionInformation(
         'Leaderboards',
         _('Leaderboards'),
-        _('Allow your game to send scores to your leaderboards.'),
+        _(
+          'Allow your game to send scores to your leaderboards (anonymously or from the logged-in player) or display existing leaderboards to the player.'
+        ),
         'Florian Rival',
         'Open source (MIT License)'
       )
@@ -30,6 +32,12 @@ module.exports = {
       .addInstructionOrExpressionGroupMetadata(_('Leaderboards'))
       .setIcon('JsPlatform/Extensions/leaderboard.svg');
 
+    extension
+      .addDependency()
+      .setName('Safari View Controller Cordova plugin')
+      .setDependencyType('cordova')
+      .setExportName('@gdevelop/cordova-plugin-safariviewcontroller');
+
     extension
       .addAction(
         'SavePlayerScore',

Extensions/Lighting/JsExtension.js

@@ -22,7 +22,7 @@ module.exports = {
         'Lighting',
         _('Lights'),
 
-        'This provides a light object, and a behavior to mark other objects as being obstacles for the lights. This is a great way to create a special atmosphere to your game, along with effects, make it more realistic or to create gameplays based on lights.',
+        'This provides a 2D light object, and a behavior to mark other 2D objects as being obstacles for the lights. This is a great way to create a special atmosphere to your game, along with effects, make it more realistic or to create gameplays based on lights.',
         'Harsimran Virk',
         'MIT'
       )
@@ -51,7 +51,7 @@ module.exports = {
         _('Light Obstacle Behavior'),
         'LightObstacleBehavior',
         _(
-          'Flag objects as being obstacles to light. The light emitted by light objects will be stopped by the object.'
+          'Flag objects as being obstacles to 2D lights. The light emitted by light objects will be stopped by the object. This does not work on 3D objects and 3D games.'
         ),
         '',
         'CppPlatform/Extensions/lightObstacleIcon32.png',
@@ -164,7 +164,7 @@ module.exports = {
         'LightObject',
         _('Light'),
         _(
-          'Displays a light on the scene, with a customizable radius and color. Add then the Light Obstacle behavior to the objects that must act as obstacle to the lights.'
+          'Displays a 2D light on the scene, with a customizable radius and color. Add then the Light Obstacle behavior to the objects that must act as obstacle to the lights.'
         ),
         'CppPlatform/Extensions/lightIcon32.png',
         lightObject

Extensions/Lighting/lightruntimeobject.ts

@@ -87,16 +87,21 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): LightNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): LightNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         rad: this.getRadius(),
         col: this.getColor(),
       };
     }
 
-    updateFromNetworkSyncData(networkSyncData: LightNetworkSyncData): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+    updateFromNetworkSyncData(
+      networkSyncData: LightNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
+    ): void {
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       if (networkSyncData.rad !== undefined) {
         this.setRadius(networkSyncData.rad);

Extensions/LinkedObjects/linkedobjects.ts

@@ -239,7 +239,7 @@ namespace gdjs {
         instanceContainer: gdjs.RuntimeInstanceContainer,
         objectsLists: Hashtable<gdjs.RuntimeObject[]>,
         obj: gdjs.RuntimeObject | null,
-        eventsFunctionContext: EventsFunctionContext | undefined
+        eventsFunctionContext: EventsFunctionContext | null | undefined
       ) {
         if (obj === null) {
           return false;

Extensions/Multiplayer/JsExtension.js

@@ -21,7 +21,9 @@ module.exports = {
       .setExtensionInformation(
         'Multiplayer',
         _('Multiplayer'),
-        _('Allow players to connect to lobbies and play together.'),
+        _(
+          'This allows players to join online lobbies and synchronize gameplay across devices without needing to manage servers or networking.\n\nUse the "Open game lobbies" action to let players join a game, and use conditions like "Lobby game has just started" to begin gameplay. Add the "Multiplayer object" behavior to game objects that should be synchronized, and assign or change their ownership using player numbers. Variables and game state (like scenes, scores, or timers) are automatically synced by the host, with options to change ownership or disable sync when needed. Common multiplayer logic —like handling joins/leaves, collisions, and host migration— is supported out-of-the-box for up to 8 players per game.'
+        ),
         'Florian Rival',
         'Open source (MIT License)'
       )
@@ -31,6 +33,79 @@ module.exports = {
       .addInstructionOrExpressionGroupMetadata(_('Multiplayer'))
       .setIcon('JsPlatform/Extensions/multiplayer.svg');
 
+    extension
+      .addDependency()
+      .setName('Safari View Controller Cordova plugin')
+      .setDependencyType('cordova')
+      .setExportName('@gdevelop/cordova-plugin-safariviewcontroller');
+
+    extension
+      .addStrExpression(
+        'CurrentLobbyID',
+        _('Current lobby ID'),
+        _('Returns current lobby ID.'),
+        _('Lobbies'),
+        'JsPlatform/Extensions/multiplayer.svg'
+      )
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/Multiplayer/peer.js')
+      .addIncludeFile('Extensions/Multiplayer/peerJsHelper.js')
+      .addIncludeFile(
+        'Extensions/PlayerAuthentication/playerauthenticationcomponents.js'
+      )
+      .addIncludeFile(
+        'Extensions/PlayerAuthentication/playerauthenticationtools.js'
+      )
+      .addIncludeFile('Extensions/Multiplayer/multiplayercomponents.js')
+      .addIncludeFile('Extensions/Multiplayer/messageManager.js')
+      .addIncludeFile('Extensions/Multiplayer/multiplayerVariablesManager.js')
+      .addIncludeFile('Extensions/Multiplayer/multiplayertools.js')
+      .setFunctionName('gdjs.multiplayer.getLobbyID');
+
+    extension
+      .addAction(
+        'QuickJoinWithLobbyID',
+        _('Join a specific lobby by its ID'),
+        _(
+          'Join a specific lobby. The player will join the game instantly if this is possible.'
+        ),
+        _('Join a specific lobby by its ID _PARAM1_'),
+        _('Lobbies'),
+        'JsPlatform/Extensions/multiplayer.svg',
+        'JsPlatform/Extensions/multiplayer.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter('string', _('Lobby ID'), '', false)
+      .addParameter(
+        'yesorno',
+        _('Display loader while joining a lobby.'),
+        '',
+        true
+      )
+      .setDefaultValue('yes')
+      .addParameter(
+        'yesorno',
+        _('Display game lobbies if unable to join a specific one.'),
+        '',
+        true
+      )
+      .setDefaultValue('yes')
+      .setHelpPath('/all-features/multiplayer')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/Multiplayer/peer.js')
+      .addIncludeFile('Extensions/Multiplayer/peerJsHelper.js')
+      .addIncludeFile(
+        'Extensions/PlayerAuthentication/playerauthenticationcomponents.js'
+      )
+      .addIncludeFile(
+        'Extensions/PlayerAuthentication/playerauthenticationtools.js'
+      )
+      .addIncludeFile('Extensions/Multiplayer/multiplayercomponents.js')
+      .addIncludeFile('Extensions/Multiplayer/messageManager.js')
+      .addIncludeFile('Extensions/Multiplayer/multiplayerVariablesManager.js')
+      .addIncludeFile('Extensions/Multiplayer/multiplayertools.js')
+      .setFunctionName('gdjs.multiplayer.authenticateAndQuickJoinWithLobbyID');
+
     extension
       .addAction(
         'QuickJoinLobby',

Extensions/Multiplayer/messageManager.ts

@@ -729,7 +729,9 @@ namespace gdjs {
             behavior.playerNumber = ownerPlayerNumber;
           }
 
-          instance.updateFromNetworkSyncData(messageData);
+          instance.updateFromNetworkSyncData(messageData, {
+            clearInputs: false,
+          });
 
           setLastClockReceivedForInstanceOnScene({
             sceneNetworkId,
@@ -1737,7 +1739,7 @@ namespace gdjs {
               return;
             }
 
-            runtimeScene.updateFromNetworkSyncData(messageData);
+            runtimeScene.updateFromNetworkSyncData(messageData, {});
           } else {
             // If the game is not ready to receive game update messages, we need to save the data for later use.
             // This can happen when joining a game that is already running.
@@ -1890,7 +1892,7 @@ namespace gdjs {
           const messageData = message.getData();
           const messageSender = message.getSender();
           if (gdjs.multiplayer.isReadyToSendOrReceiveGameUpdateMessages()) {
-            runtimeScene.getGame().updateFromNetworkSyncData(messageData);
+            runtimeScene.getGame().updateFromNetworkSyncData(messageData, {});
           } else {
             // If the game is not ready to receive game update messages, we need to save the data for later use.
             // This can happen when joining a game that is already running.
@@ -1918,7 +1920,7 @@ namespace gdjs {
       // Reapply the game saved updates.
       lastReceivedGameSyncDataUpdates.getUpdates().forEach((messageData) => {
         debugLogger.info(`Reapplying saved update of game.`);
-        runtimeScene.getGame().updateFromNetworkSyncData(messageData);
+        runtimeScene.getGame().updateFromNetworkSyncData(messageData, {});
       });
       // Game updates are always applied properly, so we can clear them.
       lastReceivedGameSyncDataUpdates.clear();
@@ -1937,7 +1939,7 @@ namespace gdjs {
 
         debugLogger.info(`Reapplying saved update of scene ${sceneNetworkId}.`);
 
-        runtimeScene.updateFromNetworkSyncData(messageData);
+        runtimeScene.updateFromNetworkSyncData(messageData, {});
         // We only remove the message if it was successfully applied, so it can be reapplied later,
         // in case we were not on the right scene.
         lastReceivedSceneSyncDataUpdates.remove(messageData);

Extensions/Multiplayer/multiplayerobjectruntimebehavior.ts

@@ -278,7 +278,7 @@ namespace gdjs {
 
       const instanceNetworkId = this._getOrCreateInstanceNetworkId();
       const objectName = this.owner.getName();
-      const objectNetworkSyncData = this.owner.getNetworkSyncData();
+      const objectNetworkSyncData = this.owner.getNetworkSyncData({});
 
       // this._logToConsoleWithThrottle(
       //   `Synchronizing object ${this.owner.getName()} (instance ${
@@ -448,7 +448,7 @@ namespace gdjs {
           objectOwner: this.playerNumber,
           objectName,
           instanceNetworkId,
-          objectNetworkSyncData: this.owner.getNetworkSyncData(),
+          objectNetworkSyncData: this.owner.getNetworkSyncData({}),
           sceneNetworkId,
         });
       this._sendDataToPeersWithIncreasedClock(
@@ -598,7 +598,7 @@ namespace gdjs {
         debugLogger.info(
           'Sending update message to move the object immediately.'
         );
-        const objectNetworkSyncData = this.owner.getNetworkSyncData();
+        const objectNetworkSyncData = this.owner.getNetworkSyncData({});
         const {
           messageName: updateMessageName,
           messageData: updateMessageData,

Extensions/Multiplayer/multiplayertools.ts

@@ -17,9 +17,29 @@ namespace gdjs {
     }[];
   };
 
+  type LobbyStatus =
+    | 'waiting'
+    | 'starting'
+    | 'playing'
+    | 'migrating'
+    | 'migrated';
+  type LobbyConnectionStatus = 'waiting' | 'ready' | 'connected';
+  type InGamePlayerStatus = 'playing' | 'left';
+  type PlayerStatus = LobbyConnectionStatus | InGamePlayerStatus;
+
+  type LobbyPlayer = {
+    playerId: string;
+    status: PlayerStatus;
+    playerNumber: number;
+  };
+
   type Lobby = {
     id: string;
-    status: 'waiting' | 'starting' | 'playing' | 'migrating' | 'migrated';
+    minPlayers: number;
+    maxPlayers: number;
+    canJoinAfterStart: boolean;
+    players: LobbyPlayer[];
+    status: LobbyStatus;
   };
 
   type QuickJoinLobbyResponse =
@@ -105,6 +125,7 @@ namespace gdjs {
     let _quickJoinLobbyFailureReason:
       | 'FULL'
       | 'NOT_ENOUGH_PLAYERS'
+      | 'DOES_NOT_EXIST'
       | 'UNKNOWN'
       | null = null;
     let _lobbyId: string | null = null;
@@ -1697,11 +1718,87 @@ namespace gdjs {
       }
     };
 
-    export const authenticateAndQuickJoinLobby = async (
+    export const getLobbyID = (): string => {
+      return _lobbyId || '';
+    };
+
+    const quickJoinWithLobbyID = async (
       runtimeScene: gdjs.RuntimeScene,
+      lobbyID: string,
       displayLoader: boolean,
       openLobbiesPageIfFailure: boolean
     ) => {
+      if (_isQuickJoiningOrStartingAGame) return;
+      const _gameId = gdjs.projectData.properties.projectUuid;
+      if (!_gameId) {
+        logger.error(
+          'The game ID is missing, the quick join lobby action cannot continue.'
+        );
+        return;
+      }
+
+      _quickJoinLobbyFailureReason = null;
+      _isQuickJoiningOrStartingAGame = true;
+      if (displayLoader) {
+        gdjs.multiplayerComponents.displayLoader(runtimeScene, true);
+      }
+
+      const quickJoinWithLobbyIDRelativeUrl = `/play/game/${_gameId}/public-lobby/${lobbyID}`;
+
+      try {
+        const lobby: Lobby = await gdjs.evtTools.network.retryIfFailed(
+          { times: 2 },
+          () =>
+            fetchAsPlayer({
+              relativeUrl: quickJoinWithLobbyIDRelativeUrl,
+              method: 'GET',
+              dev: isUsingGDevelopDevelopmentEnvironment,
+            })
+        );
+
+        const isFull = lobby.players.length === lobby.maxPlayers;
+        if (isFull) {
+          logger.error('Lobby is full - cannot quick join it.');
+          _quickJoinLobbyJustFailed = true;
+          _quickJoinLobbyFailureReason = 'FULL';
+          onLobbyQuickJoinFinished(runtimeScene);
+          if (openLobbiesPageIfFailure) {
+            openLobbiesWindow(runtimeScene);
+          }
+          return;
+        }
+
+        if (lobby.status === 'playing') {
+          _actionAfterJoiningLobby = 'JOIN_GAME';
+        } else if (lobby.status === 'waiting') {
+          if (lobby.players.length === 0) {
+            _actionAfterJoiningLobby = 'START_GAME';
+          } else {
+            _actionAfterJoiningLobby = 'OPEN_LOBBY_PAGE';
+          }
+        } else {
+          throw new Error(`Lobby in wrong status: ${lobby.status}`);
+        }
+
+        handleJoinLobbyEvent(runtimeScene, lobbyID);
+      } catch (error) {
+        const errorCode = parseInt(error.message.match(/\d{3}/)?.[0]);
+        if (errorCode === 404) {
+          logger.error('Lobby does not exist.');
+          _quickJoinLobbyFailureReason = 'DOES_NOT_EXIST';
+        } else {
+          logger.error('An error occurred while joining a lobby:', error);
+          _quickJoinLobbyFailureReason = 'UNKNOWN';
+        }
+        _quickJoinLobbyJustFailed = true;
+        onLobbyQuickJoinFinished(runtimeScene);
+        if (openLobbiesPageIfFailure) {
+          openLobbiesWindow(runtimeScene);
+        }
+      }
+    };
+
+    const isQuickJoiningTooFast = () => {
       const requestDoneAt = Date.now();
       if (_lastQuickJoinRequestDoneAt) {
         if (requestDoneAt - _lastQuickJoinRequestDoneAt < 500) {
@@ -1709,12 +1806,18 @@ namespace gdjs {
           logger.warn(
             'Last request to quick join a lobby was sent too little time ago. Ignoring this one.'
           );
-          return;
+          return true;
         }
       } else {
         _lastQuickJoinRequestDoneAt = requestDoneAt;
       }
 
+      return false;
+    };
+
+    const isNotCorrectlyAuthenticatedForQuickJoin = async (
+      runtimeScene: RuntimeScene
+    ) => {
       const playerId = gdjs.playerAuthentication.getUserId();
       const playerToken = gdjs.playerAuthentication.getUserToken();
       if (!playerId || !playerToken) {
@@ -1724,14 +1827,43 @@ namespace gdjs {
             .promise;
         _isWaitingForLogin = false;
 
-        if (status === 'logged') {
-          await quickJoinLobby(
+        if (status !== 'logged') {
+          return true;
+        }
+      }
+
+      return false;
+    };
+
+    export const authenticateAndQuickJoinWithLobbyID = async (
+      runtimeScene: gdjs.RuntimeScene,
+      lobbyID: string,
+      displayLoader: boolean,
+      openLobbiesPageIfFailure: boolean
+    ) => {
+      if (isQuickJoiningTooFast()) {
+        return;
+      }
+      if (await isNotCorrectlyAuthenticatedForQuickJoin(runtimeScene)) {
+        return;
+      }
+      await quickJoinWithLobbyID(
         runtimeScene,
+        lobbyID,
         displayLoader,
         openLobbiesPageIfFailure
       );
-        }
+    };
 
+    export const authenticateAndQuickJoinLobby = async (
+      runtimeScene: gdjs.RuntimeScene,
+      displayLoader: boolean,
+      openLobbiesPageIfFailure: boolean
+    ) => {
+      if (isQuickJoiningTooFast()) {
+        return;
+      }
+      if (await isNotCorrectlyAuthenticatedForQuickJoin(runtimeScene)) {
         return;
       }
       await quickJoinLobby(

Extensions/PanelSpriteObject/panelspriteruntimeobject-pixi-renderer.ts

@@ -389,26 +389,15 @@ namespace gdjs {
       this.updatePosition();
     }
 
-    setColor(rgbColor): void {
-      const colors = rgbColor.split(';');
-      if (colors.length < 3) {
-        return;
-      }
-      this._centerSprite.tint = gdjs.rgbToHexNumber(
-        parseInt(colors[0], 10),
-        parseInt(colors[1], 10),
-        parseInt(colors[2], 10)
-      );
+    setColor(rgbOrHexColor: string): void {
+      const tint = gdjs.rgbOrHexStringToNumber(rgbOrHexColor);
+      this._centerSprite.tint = tint;
       for (
         let borderCounter = 0;
         borderCounter < this._borderSprites.length;
         borderCounter++
       ) {
-        this._borderSprites[borderCounter].tint = gdjs.rgbToHexNumber(
-          parseInt(colors[0], 10),
-          parseInt(colors[1], 10),
-          parseInt(colors[2], 10)
-        );
+        this._borderSprites[borderCounter].tint = tint;
       }
       this._spritesContainer.cacheAsBitmap = false;
     }
@@ -416,11 +405,11 @@ namespace gdjs {
     getColor() {
       const rgb = new PIXI.Color(this._centerSprite.tint).toRgbArray();
       return (
-        Math.floor(rgb[0] * 255) +
+        Math.round(rgb[0] * 255) +
         ';' +
-        Math.floor(rgb[1] * 255) +
+        Math.round(rgb[1] * 255) +
         ';' +
-        Math.floor(rgb[2] * 255)
+        Math.round(rgb[2] * 255)
       );
     }
 

Extensions/PanelSpriteObject/panelspriteruntimeobject.ts

@@ -119,18 +119,21 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): PanelSpriteNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): PanelSpriteNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         op: this.getOpacity(),
         color: this.getColor(),
       };
     }
 
     updateFromNetworkSyncData(
-      networkSyncData: PanelSpriteNetworkSyncData
+      networkSyncData: PanelSpriteNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       // Texture is not synchronized, see if this is asked or not.
 

Extensions/ParticleSystem/particleemitterobject.ts

@@ -370,9 +370,11 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): ParticleEmitterObjectNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): ParticleEmitterObjectNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         prms: this.particleRotationMinSpeed,
         prmx: this.particleRotationMaxSpeed,
         mpc: this.maxParticlesCount,
@@ -399,9 +401,10 @@ namespace gdjs {
     }
 
     updateFromNetworkSyncData(
-      syncData: ParticleEmitterObjectNetworkSyncData
+      syncData: ParticleEmitterObjectNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(syncData);
+      super.updateFromNetworkSyncData(syncData, options);
       if (syncData.x !== undefined) {
         this.setX(syncData.x);
       }

Extensions/PathfindingBehavior/pathfindingruntimebehavior.ts

@@ -6,7 +6,7 @@ namespace gdjs {
   const logger = new gdjs.Logger('Pathfinding behavior');
 
   interface PathfindingNetworkSyncDataType {
-    // Syncing the path should be enough to have a good prediction.
+    // Syncing the path and its position on it should be enough to have a good prediction.
     path: FloatPoint[];
     pf: boolean;
     sp: number;
@@ -15,6 +15,7 @@ namespace gdjs {
     tss: number;
     re: boolean;
     ma: number;
+    dos: number;
   }
 
   export interface PathfindingNetworkSyncData extends BehaviorNetworkSyncData {
@@ -133,9 +134,11 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): PathfindingNetworkSyncData {
+    getNetworkSyncData(
+      options: GetNetworkSyncDataOptions
+    ): PathfindingNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(options),
         props: {
           path: this._path,
           pf: this._pathFound,
@@ -145,14 +148,16 @@ namespace gdjs {
           tss: this._totalSegmentDistance,
           re: this._reachedEnd,
           ma: this._movementAngle,
+          dos: this._distanceOnSegment,
         },
       };
     }
 
     updateFromNetworkSyncData(
-      networkSyncData: PathfindingNetworkSyncData
+      networkSyncData: PathfindingNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ): void {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
       const behaviorSpecificProps = networkSyncData.props;
       if (behaviorSpecificProps.path !== undefined) {
         this._path = behaviorSpecificProps.path;
@@ -181,6 +186,9 @@ namespace gdjs {
       if (behaviorSpecificProps.ma !== undefined) {
         this._movementAngle = behaviorSpecificProps.ma;
       }
+      if (behaviorSpecificProps.dos !== undefined) {
+        this._distanceOnSegment = behaviorSpecificProps.dos;
+      }
     }
 
     setCellWidth(width: float): void {

Extensions/Physics2Behavior/JsExtension.js

@@ -21,7 +21,11 @@ module.exports = {
       .setExtensionInformation(
         'Physics2',
         _('2D Physics Engine'),
-        "The 2D physics engine simulates realistic object physics, with gravity, forces, collisions, joints, etc. It's perfect for 2D games that need to have realistic behaving objects and a gameplay centered around it.",
+        "The 2D physics engine simulates realistic object physics, with gravity, forces, collisions, joints, etc. It's perfect for 2D games that need to have realistic behaving objects and a gameplay centered around it.\n" +
+          '\n' +
+          'Objects like floors or wall objects should usually be set to "Static" as type. Objects that should be moveable are usually "Dynamic" (default). "Kinematic" objects (typically, players or controlled characters) are only moved by their "linear velocity" and "angular velocity" - they can interact with other objects but only these other objects will move.\n' +
+          '\n' +
+          'Forces (and impulses) are expressed in all conditions/expressions/actions of the 2D physics engine in Newtons (N). Typical values for a force are 10-200 N. One meter is 100 pixels by default in the game (check the world scale). Mass is expressed in kilograms (kg).',
         'Florian Rival, Franco Maciel',
         'MIT'
       )
@@ -527,6 +531,7 @@ module.exports = {
         physics2Behavior,
         sharedData
       )
+      .markAsIrrelevantForChildObjects()
       .setIncludeFile('Extensions/Physics2Behavior/physics2runtimebehavior.js')
       .addIncludeFile('Extensions/Physics2Behavior/Box2D_v2.3.1_min.wasm.js')
       .addRequiredFile('Extensions/Physics2Behavior/Box2D_v2.3.1_min.wasm.wasm')

Extensions/Physics2Behavior/physics2runtimebehavior.ts

@@ -499,7 +499,9 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): Physics2NetworkSyncData {
+    getNetworkSyncData(
+      options: GetNetworkSyncDataOptions
+    ): Physics2NetworkSyncData {
       const bodyProps = this._body
         ? {
             tpx: this._body.GetTransform().get_p().get_x(),
@@ -520,7 +522,7 @@ namespace gdjs {
             aw: undefined,
           };
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(options),
         props: {
           ...bodyProps,
           layers: this.layers,
@@ -529,45 +531,13 @@ namespace gdjs {
       };
     }
 
-    updateFromNetworkSyncData(networkSyncData: Physics2NetworkSyncData) {
-      super.updateFromNetworkSyncData(networkSyncData);
+    updateFromNetworkSyncData(
+      networkSyncData: Physics2NetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
+    ) {
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       const behaviorSpecificProps = networkSyncData.props;
-      if (
-        behaviorSpecificProps.tpx !== undefined &&
-        behaviorSpecificProps.tpy !== undefined &&
-        behaviorSpecificProps.tqa !== undefined
-      ) {
-        if (this._body) {
-          this._body.SetTransform(
-            this.b2Vec2(behaviorSpecificProps.tpx, behaviorSpecificProps.tpy),
-            behaviorSpecificProps.tqa
-          );
-        }
-      }
-
-      if (
-        behaviorSpecificProps.lvx !== undefined &&
-        behaviorSpecificProps.lvy !== undefined
-      ) {
-        if (this._body) {
-          this._body.SetLinearVelocity(
-            this.b2Vec2(behaviorSpecificProps.lvx, behaviorSpecificProps.lvy)
-          );
-        }
-      }
-
-      if (behaviorSpecificProps.av !== undefined) {
-        if (this._body) {
-          this._body.SetAngularVelocity(behaviorSpecificProps.av);
-        }
-      }
-
-      if (behaviorSpecificProps.aw !== undefined) {
-        if (this._body) {
-          this._body.SetAwake(behaviorSpecificProps.aw);
-        }
-      }
 
       if (behaviorSpecificProps.layers !== undefined) {
         this.layers = behaviorSpecificProps.layers;
@@ -576,6 +546,38 @@ namespace gdjs {
       if (behaviorSpecificProps.masks !== undefined) {
         this.masks = behaviorSpecificProps.masks;
       }
+
+      this.updateBodyFromObject();
+
+      if (!this._body) return;
+
+      if (
+        behaviorSpecificProps.tpx !== undefined &&
+        behaviorSpecificProps.tpy !== undefined &&
+        behaviorSpecificProps.tqa !== undefined
+      ) {
+        this._body.SetTransform(
+          this.b2Vec2(behaviorSpecificProps.tpx, behaviorSpecificProps.tpy),
+          behaviorSpecificProps.tqa
+        );
+      }
+
+      if (
+        behaviorSpecificProps.lvx !== undefined &&
+        behaviorSpecificProps.lvy !== undefined
+      ) {
+        this._body.SetLinearVelocity(
+          this.b2Vec2(behaviorSpecificProps.lvx, behaviorSpecificProps.lvy)
+        );
+      }
+
+      if (behaviorSpecificProps.av !== undefined) {
+        this._body.SetAngularVelocity(behaviorSpecificProps.av);
+      }
+
+      if (behaviorSpecificProps.aw !== undefined) {
+        this._body.SetAwake(behaviorSpecificProps.aw);
+      }
     }
 
     onDeActivate() {

Extensions/Physics3DBehavior/JsExtension.js

@@ -21,7 +21,11 @@ module.exports = {
       .setExtensionInformation(
         'Physics3D',
         _('3D physics engine'),
-        "The 3D physics engine simulates realistic object physics, with gravity, forces, collisions, joints, etc. It's perfect for almost all 3D games.",
+        "The 3D physics engine simulates realistic object physics, with gravity, forces, collisions, joints, etc. It's perfect for almost all 3D games.\n" +
+          '\n' +
+          'Objects like floors or wall objects should usually be set to "Static" as type. Objects that should be moveable are usually "Dynamic" (default). "Kinematic" objects (typically, players or controlled characters) are only moved by their "linear velocity" and "angular velocity" - they can interact with other objects but only these other objects will move.\n' +
+          '\n' +
+          'Forces (and impulses) are expressed in all conditions/expressions/actions of the 3D physics engine in Newtons (N). Typical values for a force are 10-200 N. One meter is 100 pixels by default in the game (check the world scale). Mass is expressed in kilograms (kg).',
         'Florian Rival',
         'MIT'
       )
@@ -675,6 +679,7 @@ module.exports = {
           behavior,
           sharedData
         )
+        .markAsIrrelevantForChildObjects()
         .addIncludeFile(
           'Extensions/Physics3DBehavior/Physics3DRuntimeBehavior.js'
         )
@@ -2043,7 +2048,12 @@ module.exports = {
           'PhysicsCharacter3D',
           _('3D physics character'),
           'PhysicsCharacter3D',
-          _('Jump and run on platforms.'),
+          _(
+            'Allow an object to jump and run on platforms that have the 3D physics behavior' +
+              '(and which are generally set to "Static" as type, unless the platform is animated/moved in events).\n' +
+              '\n' +
+              'This behavior is usually used with one or more "mapper" behavior to let the player move it.'
+          ),
           '',
           'JsPlatform/Extensions/physics_character3d.svg',
           'PhysicsCharacter3D',
@@ -2612,7 +2622,7 @@ module.exports = {
           'JumpSustainTime',
           _('Jump sustain time'),
           _(
-            'the jump sustain time of an object. This is the time during which keeping the jump button held allow the initial jump speed to be maintained.'
+            'the jump sustain time of an object. This is the time during which keeping the jump button held allow the initial jump speed to be maintained'
           ),
           _('the jump sustain time'),
           _('Character configuration'),
@@ -3300,7 +3310,11 @@ module.exports = {
           'PhysicsCar3D',
           _('3D physics car'),
           'PhysicsCar3D',
-          _('Simulate a realistic car using the 3D physics engine.'),
+          _(
+            "Simulate a realistic car using the 3D physics engine. This is mostly useful for the car controlled by the player (it's usually too complex for other cars in a game).\n" +
+              '\n' +
+              'This behavior is usually used with one or more "mapper" behavior to let the player move it.'
+          ),
           '',
           'JsPlatform/Extensions/physics_car3d.svg',
           'PhysicsCar3D',

Extensions/Physics3DBehavior/Physics3DRuntimeBehavior.ts

@@ -495,7 +495,9 @@ namespace gdjs {
       return true;
     }
 
-    override getNetworkSyncData(): Physics3DNetworkSyncData {
+    override getNetworkSyncData(
+      options: GetNetworkSyncDataOptions
+    ): Physics3DNetworkSyncData {
       let bodyProps;
       if (this._body) {
         const position = this._body.GetPosition();
@@ -537,7 +539,7 @@ namespace gdjs {
         };
       }
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(options),
         props: {
           ...bodyProps,
           layers: this.layers,
@@ -547,17 +549,31 @@ namespace gdjs {
     }
 
     override updateFromNetworkSyncData(
-      networkSyncData: Physics3DNetworkSyncData
+      networkSyncData: Physics3DNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ) {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       const behaviorSpecificProps = networkSyncData.props;
+
+      if (behaviorSpecificProps.layers !== undefined) {
+        this.layers = behaviorSpecificProps.layers;
+      }
+      if (behaviorSpecificProps.masks !== undefined) {
+        this.masks = behaviorSpecificProps.masks;
+      }
+
+      this._needToRecreateShape = true;
+      this._needToRecreateBody = true;
+      this.updateBodyFromObject();
+
+      if (!this._body) return;
+
       if (
         behaviorSpecificProps.px !== undefined &&
         behaviorSpecificProps.py !== undefined &&
         behaviorSpecificProps.pz !== undefined
       ) {
-        if (this._body) {
         this._sharedData.bodyInterface.SetPosition(
           this._body.GetID(),
           this.getRVec3(
@@ -568,14 +584,12 @@ namespace gdjs {
           Jolt.EActivation_DontActivate
         );
       }
-      }
       if (
         behaviorSpecificProps.rx !== undefined &&
         behaviorSpecificProps.ry !== undefined &&
         behaviorSpecificProps.rz !== undefined &&
         behaviorSpecificProps.rw !== undefined
       ) {
-        if (this._body) {
         this._sharedData.bodyInterface.SetRotation(
           this._body.GetID(),
           this.getQuat(
@@ -587,13 +601,11 @@ namespace gdjs {
           Jolt.EActivation_DontActivate
         );
       }
-      }
       if (
         behaviorSpecificProps.lvx !== undefined &&
         behaviorSpecificProps.lvy !== undefined &&
         behaviorSpecificProps.lvz !== undefined
       ) {
-        if (this._body) {
         this._sharedData.bodyInterface.SetLinearVelocity(
           this._body.GetID(),
           this.getVec3(
@@ -603,13 +615,11 @@ namespace gdjs {
           )
         );
       }
-      }
       if (
         behaviorSpecificProps.avx !== undefined &&
         behaviorSpecificProps.avy !== undefined &&
         behaviorSpecificProps.avz !== undefined
       ) {
-        if (this._body) {
         this._sharedData.bodyInterface.SetAngularVelocity(
           this._body.GetID(),
           this.getVec3(
@@ -620,13 +630,6 @@ namespace gdjs {
         );
       }
     }
-      if (behaviorSpecificProps.layers !== undefined) {
-        this.layers = behaviorSpecificProps.layers;
-      }
-      if (behaviorSpecificProps.masks !== undefined) {
-        this.masks = behaviorSpecificProps.masks;
-      }
-    }
 
     override onDeActivate() {
       this._sharedData.removeFromBehaviorsList(this);
@@ -635,11 +638,6 @@ namespace gdjs {
 
     override onActivate() {
       this._sharedData.addToBehaviorsList(this);
-
-      this._contactsEndedThisFrame.length = 0;
-      this._contactsStartedThisFrame.length = 0;
-      this._currentContacts.length = 0;
-      this.updateBodyFromObject();
     }
 
     override onDestroy() {
@@ -926,31 +924,58 @@ namespace gdjs {
       this.updateBodyFromObject();
     }
 
-    recreateBody() {
-      if (!this._body) {
-        this._createBody();
-        return;
-      }
-
+    recreateBody(previousBodyData?: {
+      linearVelocityX: float;
+      linearVelocityY: float;
+      linearVelocityZ: float;
+      angularVelocityX: float;
+      angularVelocityY: float;
+      angularVelocityZ: float;
+    }) {
       const bodyInterface = this._sharedData.bodyInterface;
-      const linearVelocity = this._body.GetLinearVelocity();
-      const linearVelocityX = linearVelocity.GetX();
-      const linearVelocityY = linearVelocity.GetY();
-      const linearVelocityZ = linearVelocity.GetZ();
-      const angularVelocity = this._body.GetAngularVelocity();
-      const angularVelocityX = angularVelocity.GetX();
-      const angularVelocityY = angularVelocity.GetY();
-      const angularVelocityZ = angularVelocity.GetZ();
+      const linearVelocityX = previousBodyData
+        ? previousBodyData.linearVelocityX
+        : this._body
+          ? this._body.GetLinearVelocity().GetX()
+          : 0;
+      const linearVelocityY = previousBodyData
+        ? previousBodyData.linearVelocityY
+        : this._body
+          ? this._body.GetLinearVelocity().GetY()
+          : 0;
+      const linearVelocityZ = previousBodyData
+        ? previousBodyData.linearVelocityZ
+        : this._body
+          ? this._body.GetLinearVelocity().GetZ()
+          : 0;
+      const angularVelocityX = previousBodyData
+        ? previousBodyData.angularVelocityX
+        : this._body
+          ? this._body.GetAngularVelocity().GetX()
+          : 0;
+      const angularVelocityY = previousBodyData
+        ? previousBodyData.angularVelocityY
+        : this._body
+          ? this._body.GetAngularVelocity().GetY()
+          : 0;
+      const angularVelocityZ = previousBodyData
+        ? previousBodyData.angularVelocityZ
+        : this._body
+          ? this._body.GetAngularVelocity().GetZ()
+          : 0;
 
+      if (this._body) {
         this.bodyUpdater.destroyBody();
         this._contactsEndedThisFrame.length = 0;
         this._contactsStartedThisFrame.length = 0;
         this._currentContacts.length = 0;
+      }
 
       this._createBody();
       if (!this._body) {
         return;
       }
+
       const bodyID = this._body.GetID();
       bodyInterface.SetLinearVelocity(
         bodyID,

Extensions/Physics3DBehavior/PhysicsCar3DRuntimeBehavior.ts

@@ -12,6 +12,7 @@ namespace gdjs {
     etm: float;
     esm: float;
     ei: float;
+    es: float;
   }
 
   export interface PhysicsCar3DNetworkSyncData extends BehaviorNetworkSyncData {
@@ -96,7 +97,7 @@ namespace gdjs {
     // This is useful when the object is synchronized by an external source
     // like in a multiplayer game, and we want to be able to predict the
     // movement of the object, even if the inputs are not updated every frame.
-    private _dontClearInputsBetweenFrames: boolean = false;
+    private _clearInputsBetweenFrames: boolean = true;
 
     constructor(
       instanceContainer: gdjs.RuntimeInstanceContainer,
@@ -168,12 +169,37 @@ namespace gdjs {
         this._isHookedToPhysicsStep = true;
       }
 
+      // Destroy the body before switching the bodyUpdater,
+      // to ensure the body of the previous bodyUpdater is not left alive.
+      // (would be a memory leak and would create a phantom body in the physics world)
+      // But transfer the linear and angular velocity to the new body,
+      // so the body doesn't stop when it is recreated.
+      let previousBodyData = {
+        linearVelocityX: 0,
+        linearVelocityY: 0,
+        linearVelocityZ: 0,
+        angularVelocityX: 0,
+        angularVelocityY: 0,
+        angularVelocityZ: 0,
+      };
+      if (behavior._body) {
+        const linearVelocity = behavior._body.GetLinearVelocity();
+        previousBodyData.linearVelocityX = linearVelocity.GetX();
+        previousBodyData.linearVelocityY = linearVelocity.GetY();
+        previousBodyData.linearVelocityZ = linearVelocity.GetZ();
+        const angularVelocity = behavior._body.GetAngularVelocity();
+        previousBodyData.angularVelocityX = angularVelocity.GetX();
+        previousBodyData.angularVelocityY = angularVelocity.GetY();
+        previousBodyData.angularVelocityZ = angularVelocity.GetZ();
+        behavior.bodyUpdater.destroyBody();
+      }
+
       behavior.bodyUpdater =
         new gdjs.PhysicsCar3DRuntimeBehavior.VehicleBodyUpdater(
           this,
           behavior.bodyUpdater
         );
-      behavior.recreateBody();
+      behavior.recreateBody(previousBodyData);
 
       return this._physics3D;
     }
@@ -273,13 +299,15 @@ namespace gdjs {
       return true;
     }
 
-    override getNetworkSyncData(): PhysicsCar3DNetworkSyncData {
+    override getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): PhysicsCar3DNetworkSyncData {
       // This method is called, so we are synchronizing this object.
       // Let's clear the inputs between frames as we control it.
-      this._dontClearInputsBetweenFrames = false;
+      this._clearInputsBetweenFrames = true;
 
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         props: {
           lek: this._wasLeftKeyPressed,
           rik: this._wasRightKeyPressed,
@@ -291,14 +319,16 @@ namespace gdjs {
           etm: this._engineTorqueMax,
           esm: this._engineSpeedMax,
           ei: this._engineInertia,
+          es: this.getEngineSpeed(),
         },
       };
     }
 
     override updateFromNetworkSyncData(
-      networkSyncData: PhysicsCar3DNetworkSyncData
+      networkSyncData: PhysicsCar3DNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ) {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       const behaviorSpecificProps = networkSyncData.props;
       this._hasPressedForwardKey = behaviorSpecificProps.upk;
@@ -311,9 +341,15 @@ namespace gdjs {
       this._engineTorqueMax = behaviorSpecificProps.etm;
       this._engineSpeedMax = behaviorSpecificProps.esm;
       this._engineInertia = behaviorSpecificProps.ei;
+      if (this._vehicleController) {
+        this._vehicleController
+          .GetEngine()
+          .SetCurrentRPM(behaviorSpecificProps.es);
+      }
 
-      // When the object is synchronized from the network, the inputs must not be cleared.
-      this._dontClearInputsBetweenFrames = true;
+      // When the object is synchronized from the network, the inputs must not be cleared,
+      // except if asked specifically.
+      this._clearInputsBetweenFrames = !!options.clearInputs;
     }
 
     _getPhysicsPosition(result: Jolt.RVec3): Jolt.RVec3 {
@@ -490,7 +526,7 @@ namespace gdjs {
       this._previousAcceleratorStickForce = this._acceleratorStickForce;
       this._previousSteeringStickForce = this._steeringStickForce;
 
-      if (!this._dontClearInputsBetweenFrames) {
+      if (this._clearInputsBetweenFrames) {
         this._hasPressedForwardKey = false;
         this._hasPressedBackwardKey = false;
         this._hasPressedRightKey = false;

Extensions/Physics3DBehavior/PhysicsCharacter3DRuntimeBehavior.ts

@@ -2,11 +2,24 @@
 
 namespace gdjs {
   interface PhysicsCharacter3DNetworkSyncDataType {
+    sma: float;
+    shm: float;
+    grav: float;
+    mfs: float;
+    facc: float;
+    fdec: float;
+    fsm: float;
+    sacc: float;
+    sdec: float;
+    ssm: float;
+    jumpspeed: float;
+    jumpsustime: float;
+    sbpa: boolean;
     fwa: float;
     fws: float;
     sws: float;
-    fs: float;
-    js: float;
+    cfs: float;
+    cjs: float;
     cj: boolean;
     lek: boolean;
     rik: boolean;
@@ -102,7 +115,7 @@ namespace gdjs {
     // This is useful when the object is synchronized by an external source
     // like in a multiplayer game, and we want to be able to predict the
     // movement of the object, even if the inputs are not updated every frame.
-    private _dontClearInputsBetweenFrames: boolean = false;
+    private _clearInputsBetweenFrames: boolean = true;
 
     /**
      * A very small value compare to 1 pixel, yet very huge compare to rounding errors.
@@ -207,10 +220,35 @@ namespace gdjs {
         this._isHookedToPhysicsStep = true;
       }
 
+      // Destroy the body before switching the bodyUpdater,
+      // to ensure the body of the previous bodyUpdater is not left alive.
+      // (would be a memory leak and would create a phantom body in the physics world)
+      // But transfer the linear and angular velocity to the new body,
+      // so the body doesn't stop when it is recreated.
+      let previousBodyData = {
+        linearVelocityX: 0,
+        linearVelocityY: 0,
+        linearVelocityZ: 0,
+        angularVelocityX: 0,
+        angularVelocityY: 0,
+        angularVelocityZ: 0,
+      };
+      if (behavior._body) {
+        const linearVelocity = behavior._body.GetLinearVelocity();
+        previousBodyData.linearVelocityX = linearVelocity.GetX();
+        previousBodyData.linearVelocityY = linearVelocity.GetY();
+        previousBodyData.linearVelocityZ = linearVelocity.GetZ();
+        const angularVelocity = behavior._body.GetAngularVelocity();
+        previousBodyData.angularVelocityX = angularVelocity.GetX();
+        previousBodyData.angularVelocityY = angularVelocity.GetY();
+        previousBodyData.angularVelocityZ = angularVelocity.GetZ();
+        behavior.bodyUpdater.destroyBody();
+      }
+
       behavior.bodyUpdater =
         new gdjs.PhysicsCharacter3DRuntimeBehavior.CharacterBodyUpdater(this);
       behavior.collisionChecker = this.collisionChecker;
-      behavior.recreateBody();
+      behavior.recreateBody(previousBodyData);
 
       // Always begin in the direction of the object.
       this._forwardAngle = this.owner.getAngle();
@@ -277,19 +315,34 @@ namespace gdjs {
       return true;
     }
 
-    override getNetworkSyncData(): PhysicsCharacter3DNetworkSyncData {
+    override getNetworkSyncData(
+      options: GetNetworkSyncDataOptions
+    ): PhysicsCharacter3DNetworkSyncData {
       // This method is called, so we are synchronizing this object.
       // Let's clear the inputs between frames as we control it.
-      this._dontClearInputsBetweenFrames = false;
+      this._clearInputsBetweenFrames = true;
 
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(options),
         props: {
+          sma: this._slopeMaxAngle,
+          shm: this._stairHeightMax,
+          grav: this._gravity,
+          mfs: this._maxFallingSpeed,
+          facc: this._forwardAcceleration,
+          fdec: this._forwardDeceleration,
+          fsm: this._forwardSpeedMax,
+          sacc: this._sidewaysAcceleration,
+          sdec: this._sidewaysDeceleration,
+          ssm: this._sidewaysSpeedMax,
+          jumpspeed: this._jumpSpeed,
+          jumpsustime: this._jumpSustainTime,
           fwa: this._forwardAngle,
+          sbpa: this._shouldBindObjectAndForwardAngle,
           fws: this._currentForwardSpeed,
           sws: this._currentSidewaysSpeed,
-          fs: this._currentFallSpeed,
-          js: this._currentJumpSpeed,
+          cfs: this._currentFallSpeed,
+          cjs: this._currentJumpSpeed,
           cj: this._canJump,
           lek: this._wasLeftKeyPressed,
           rik: this._wasRightKeyPressed,
@@ -306,16 +359,30 @@ namespace gdjs {
     }
 
     override updateFromNetworkSyncData(
-      networkSyncData: PhysicsCharacter3DNetworkSyncData
+      networkSyncData: PhysicsCharacter3DNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ) {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       const behaviorSpecificProps = networkSyncData.props;
+      this._slopeMaxAngle = behaviorSpecificProps.sma;
+      this._stairHeightMax = behaviorSpecificProps.shm;
+      this._gravity = behaviorSpecificProps.grav;
+      this._maxFallingSpeed = behaviorSpecificProps.mfs;
+      this._forwardAcceleration = behaviorSpecificProps.facc;
+      this._forwardDeceleration = behaviorSpecificProps.fdec;
+      this._forwardSpeedMax = behaviorSpecificProps.fsm;
+      this._sidewaysAcceleration = behaviorSpecificProps.sacc;
+      this._sidewaysDeceleration = behaviorSpecificProps.sdec;
+      this._sidewaysSpeedMax = behaviorSpecificProps.ssm;
+      this._jumpSpeed = behaviorSpecificProps.jumpspeed;
+      this._jumpSustainTime = behaviorSpecificProps.jumpsustime;
       this._forwardAngle = behaviorSpecificProps.fwa;
+      this._shouldBindObjectAndForwardAngle = behaviorSpecificProps.sbpa;
       this._currentForwardSpeed = behaviorSpecificProps.fws;
       this._currentSidewaysSpeed = behaviorSpecificProps.sws;
-      this._currentFallSpeed = behaviorSpecificProps.fs;
-      this._currentJumpSpeed = behaviorSpecificProps.js;
+      this._currentFallSpeed = behaviorSpecificProps.cfs;
+      this._currentJumpSpeed = behaviorSpecificProps.cjs;
       this._canJump = behaviorSpecificProps.cj;
       this._hasPressedForwardKey = behaviorSpecificProps.upk;
       this._hasPressedBackwardKey = behaviorSpecificProps.dok;
@@ -328,8 +395,8 @@ namespace gdjs {
       this._timeSinceCurrentJumpStart = behaviorSpecificProps.tscjs;
       this._jumpKeyHeldSinceJumpStart = behaviorSpecificProps.jkhsjs;
 
-      // When the object is synchronized from the network, the inputs must not be cleared.
-      this._dontClearInputsBetweenFrames = true;
+      // Clear user inputs between frames only if requested.
+      this._clearInputsBetweenFrames = !!options.clearInputs;
     }
 
     _getPhysicsPosition(result: Jolt.RVec3): Jolt.RVec3 {
@@ -650,7 +717,7 @@ namespace gdjs {
       this._wasJumpKeyPressed = this._hasPressedJumpKey;
       this._wasStickUsed = this._hasUsedStick;
 
-      if (!this._dontClearInputsBetweenFrames) {
+      if (this._clearInputsBetweenFrames) {
         this._hasPressedForwardKey = false;
         this._hasPressedBackwardKey = false;
         this._hasPressedRightKey = false;

Extensions/PhysicsBehavior/Extension.cpp

@@ -37,7 +37,8 @@ void DeclarePhysicsBehaviorExtension(gd::PlatformExtension& extension) {
         "res/physics-deprecated32.png",
         "PhysicsBehavior",
         std::make_shared<PhysicsBehavior>(),
-        std::make_shared<ScenePhysicsDatas>());
+        std::make_shared<ScenePhysicsDatas>())
+        .MarkAsIrrelevantForChildObjects();
 
     aut.AddAction("SetStatic",
                   ("Make the object static"),

Extensions/PlatformBehavior/platformerobjectruntimebehavior.ts

@@ -147,7 +147,7 @@ namespace gdjs {
     // This is useful when the object is synchronized by an external source
     // like in a multiplayer game, and we want to be able to predict the
     // movement of the object, even if the inputs are not updated every frame.
-    _dontClearInputsBetweenFrames: boolean = false;
+    private _clearInputsBetweenFrames: boolean = true;
     // This is useful when the object is synchronized over the network,
     // object is controlled by the network and we want to ensure the current player
     // cannot control it.
@@ -227,14 +227,16 @@ namespace gdjs {
       this._state = this._falling;
     }
 
-    getNetworkSyncData(): PlatformerObjectNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): PlatformerObjectNetworkSyncData {
       // This method is called, so we are synchronizing this object.
       // Let's clear the inputs between frames as we control it.
-      this._dontClearInputsBetweenFrames = false;
+      this._clearInputsBetweenFrames = true;
       this._ignoreDefaultControlsAsSyncedByNetwork = false;
 
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         props: {
           cs: this._currentSpeed,
 
@@ -263,11 +265,52 @@ namespace gdjs {
     }
 
     updateFromNetworkSyncData(
-      networkSyncData: PlatformerObjectNetworkSyncData
+      networkSyncData: PlatformerObjectNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
     ) {
-      super.updateFromNetworkSyncData(networkSyncData);
+      super.updateFromNetworkSyncData(networkSyncData, options);
 
       const behaviorSpecificProps = networkSyncData.props;
+
+      switch (behaviorSpecificProps.sn) {
+        case 'Falling':
+          if (behaviorSpecificProps.sn !== this._state.toString()) {
+            this._setFalling();
+          }
+          this._falling.updateFromNetworkSyncData(behaviorSpecificProps.ssd);
+          break;
+        case 'OnFloor':
+          // Let it handle automatically as we don't know which platform to land on.
+          // @ts-ignore - we assume it's OnFloorStateNetworkSyncData
+          this._onFloor.updateFromNetworkSyncData(behaviorSpecificProps.ssd);
+          break;
+        case 'Jumping':
+          if (behaviorSpecificProps.sn !== this._state.toString()) {
+            this._setJumping();
+          }
+          // @ts-ignore - we assume it's JumpingStateNetworkSyncData
+          this._jumping.updateFromNetworkSyncData(behaviorSpecificProps.ssd);
+          break;
+        case 'GrabbingPlatform':
+          // Let it handle automatically as we don't know which platform to grab.
+          this._grabbingPlatform.updateFromNetworkSyncData(
+            // @ts-ignore - we assume it's GrabbingPlatformStateNetworkSyncData
+            behaviorSpecificProps.ssd
+          );
+          break;
+        case 'OnLadder':
+          if (behaviorSpecificProps.sn !== this._state.toString()) {
+            this._setOnLadder();
+          }
+          this._onLadder.updateFromNetworkSyncData(behaviorSpecificProps.ssd);
+          break;
+        default:
+          console.error(
+            'Unknown state name: ' + behaviorSpecificProps.sn + '.'
+          );
+          break;
+      }
+
       if (behaviorSpecificProps.cs !== this._currentSpeed) {
         this._currentSpeed = behaviorSpecificProps.cs;
       }
@@ -317,39 +360,10 @@ namespace gdjs {
         this._jumpKeyHeldSinceJumpStart = behaviorSpecificProps.jkhsjs;
       }
 
-      if (behaviorSpecificProps.sn !== this._state.toString()) {
-        switch (behaviorSpecificProps.sn) {
-          case 'Falling':
-            this._setFalling();
-            break;
-          case 'OnFloor':
-            // Let it handle automatically as we don't know which platform to land on.
-            break;
-          case 'Jumping':
-            this._setJumping();
-            break;
-          case 'GrabbingPlatform':
-            // Let it handle automatically as we don't know which platform to grab.
-            break;
-          case 'OnLadder':
-            this._setOnLadder();
-            break;
-          default:
-            console.error(
-              'Unknown state name: ' + behaviorSpecificProps.sn + '.'
-            );
-            break;
-        }
-      }
-
-      if (behaviorSpecificProps.sn === this._state.toString()) {
-        this._state.updateFromNetworkSyncData(behaviorSpecificProps.ssd);
-      }
-
-      // When the object is synchronized from the network, the inputs must not be cleared.
-      this._dontClearInputsBetweenFrames = true;
+      // Clear user inputs between frames only if requested.
+      this._clearInputsBetweenFrames = !!options.clearInputs;
       // And we are not using the default controls.
-      this._ignoreDefaultControlsAsSyncedByNetwork = true;
+      this._ignoreDefaultControlsAsSyncedByNetwork = !options.keepControl;
     }
 
     updateFromBehaviorData(oldBehaviorData, newBehaviorData): boolean {
@@ -545,8 +559,9 @@ namespace gdjs {
       this._wasJumpKeyPressed = this._jumpKey;
       this._wasReleasePlatformKeyPressed = this._releasePlatformKey;
       this._wasReleaseLadderKeyPressed = this._releaseLadderKey;
+
       //4) Do not forget to reset pressed keys
-      if (!this._dontClearInputsBetweenFrames) {
+      if (this._clearInputsBetweenFrames) {
         // Reset the keys only if the inputs are not supposed to survive between frames.
         // (Most of the time, except if this object is synchronized by an external source)
         this._leftKey = false;

Extensions/PlatformBehavior/platformruntimebehavior.ts

@@ -157,6 +157,57 @@ namespace gdjs {
       return true;
     }
 
+    trackChangesAndUpdateManagerIfNeeded() {
+      if (!this.activated() && this._registeredInManager) {
+        this._manager.removePlatform(this);
+        this._registeredInManager = false;
+      } else {
+        if (this.activated() && !this._registeredInManager) {
+          this._manager.addPlatform(this);
+          this._registeredInManager = true;
+        }
+      }
+
+      if (
+        this._oldX !== this.owner.getX() ||
+        this._oldY !== this.owner.getY() ||
+        this._oldWidth !== this.owner.getWidth() ||
+        this._oldHeight !== this.owner.getHeight() ||
+        this._oldAngle !== this.owner.getAngle()
+      ) {
+        if (this._registeredInManager) {
+          this._manager.removePlatform(this);
+          this._manager.addPlatform(this);
+        }
+        this._oldX = this.owner.getX();
+        this._oldY = this.owner.getY();
+        this._oldWidth = this.owner.getWidth();
+        this._oldHeight = this.owner.getHeight();
+        this._oldAngle = this.owner.getAngle();
+      }
+    }
+
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): BehaviorNetworkSyncData {
+      return super.getNetworkSyncData(syncOptions);
+    }
+
+    updateFromNetworkSyncData(
+      networkSyncData: BehaviorNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
+    ): void {
+      super.updateFromNetworkSyncData(networkSyncData, options);
+
+      this.trackChangesAndUpdateManagerIfNeeded();
+    }
+
+    onCreated(): void {
+      // Register it right away if activated,
+      // so it can be used by platformer objects in that same frame.
+      this.trackChangesAndUpdateManagerIfNeeded();
+    }
+
     onDestroy() {
       if (this._manager && this._registeredInManager) {
         this._manager.removePlatform(this);
@@ -175,34 +226,7 @@ namespace gdjs {
             }*/
 
       //Make sure the platform is or is not in the platforms manager.
-      if (!this.activated() && this._registeredInManager) {
-        this._manager.removePlatform(this);
-        this._registeredInManager = false;
-      } else {
-        if (this.activated() && !this._registeredInManager) {
-          this._manager.addPlatform(this);
-          this._registeredInManager = true;
-        }
-      }
-
-      //Track changes in size or position
-      if (
-        this._oldX !== this.owner.getX() ||
-        this._oldY !== this.owner.getY() ||
-        this._oldWidth !== this.owner.getWidth() ||
-        this._oldHeight !== this.owner.getHeight() ||
-        this._oldAngle !== this.owner.getAngle()
-      ) {
-        if (this._registeredInManager) {
-          this._manager.removePlatform(this);
-          this._manager.addPlatform(this);
-        }
-        this._oldX = this.owner.getX();
-        this._oldY = this.owner.getY();
-        this._oldWidth = this.owner.getWidth();
-        this._oldHeight = this.owner.getHeight();
-        this._oldAngle = this.owner.getAngle();
-      }
+      this.trackChangesAndUpdateManagerIfNeeded();
     }
 
     doStepPostEvents(instanceContainer: gdjs.RuntimeInstanceContainer) {}

Extensions/PlayerAuthentication/JsExtension.js

@@ -35,7 +35,7 @@ module.exports = {
       .addDependency()
       .setName('Safari View Controller Cordova plugin')
       .setDependencyType('cordova')
-      .setExportName('cordova-plugin-safariviewcontroller');
+      .setExportName('@gdevelop/cordova-plugin-safariviewcontroller');
 
     extension
       .addAction(

Extensions/PlayerAuthentication/playerauthenticationtools.ts

@@ -834,8 +834,26 @@ namespace gdjs {
             authWindowOptions,
           });
 
+          if (typeof SafariViewController === 'undefined') {
+            logger.error(
+              'Cordova plugin SafariViewController is not installed.'
+            );
+            resolve('errored');
+            return;
+          }
+
           SafariViewController.isAvailable(function (available: boolean) {
-            if (available) {
+            if (!available) {
+              logger.error(
+                'Cordova plugin SafariViewController is installed but not available'
+              );
+              resolve('errored');
+              return;
+            }
+
+            logger.info(
+              'Opening authentication window for Cordova with SafariViewController.'
+            );
             SafariViewController.show(
               {
                 url: targetUrl,
@@ -854,14 +872,13 @@ namespace gdjs {
                 }
               },
               function (error: any) {
-                  logger.log('Error opening webview: ' + JSON.stringify(error));
+                logger.log(
+                  'Error opening authentication window: ' +
+                    JSON.stringify(error)
+                );
                 resolve('errored');
               }
             );
-            } else {
-              logger.error('Plugin SafariViewController is not available');
-              resolve('errored');
-            }
           });
         }
       );

Extensions/PrimitiveDrawing/Extension.cpp

@@ -15,7 +15,7 @@ void DeclarePrimitiveDrawingExtension(gd::PlatformExtension& extension) {
       .SetExtensionInformation(
           "PrimitiveDrawing",
           _("Shape painter"),
-          _("This provides an object that can be used to draw arbitrary shapes "
+          _("An object that can be used to draw arbitrary 2D shapes "
             "on the screen using events."),
           "Florian Rival and Aurélien Vivet",
           "Open source (MIT License)")
@@ -28,7 +28,7 @@ void DeclarePrimitiveDrawingExtension(gd::PlatformExtension& extension) {
           .AddObject<ShapePainterObject>(
               "Drawer",  //"Drawer" is kept for compatibility with GD<=3.6.76
               _("Shape painter"),
-              _("Allows you to draw simple shapes on the screen using the "
+              _("Allows to draw simple 2D shapes on the screen using the "
                 "events."),
               "CppPlatform/Extensions/primitivedrawingicon.png")
           .SetCategoryFullName(_("Advanced"))
@@ -142,7 +142,6 @@ void DeclarePrimitiveDrawingExtension(gd::PlatformExtension& extension) {
       .AddParameter("expression", _("Fillet (in pixels)"))
       .SetFunctionName("DrawFilletRectangle");
 
-    
   obj.AddAction("RoundedRectangle",
                 _("Rounded rectangle"),
                 _("Draw a rounded rectangle on screen"),
@@ -178,7 +177,6 @@ void DeclarePrimitiveDrawingExtension(gd::PlatformExtension& extension) {
       .AddParameter("expression", _("Chamfer (in pixels)"))
       .SetFunctionName("DrawChamferRectangle");
 
-
   obj.AddAction("Torus",
                 _("Torus"),
                 _("Draw a torus on screen"),
@@ -199,11 +197,11 @@ void DeclarePrimitiveDrawingExtension(gd::PlatformExtension& extension) {
       .AddParameter("expression", _("End Arc (in degrees)"))
       .SetFunctionName("DrawTorus");
 
-  
   obj.AddAction("RegularPolygon",
                 _("Regular Polygon"),
                 _("Draw a regular polygon on screen"),
-                _("Draw at _PARAM1_;_PARAM2_ a regular polygon with _PARAM3_ sides and radius: "
+                _("Draw at _PARAM1_;_PARAM2_ a regular polygon with _PARAM3_ "
+                  "sides and radius: "
                   "_PARAM4_ (rotation: _PARAM5_) "
                   "with _PARAM0_"),
                 _("Drawing"),

Extensions/PrimitiveDrawing/shapepainterruntimeobject.ts

@@ -37,6 +37,24 @@ namespace gdjs {
 
   export type ShapePainterObjectData = ObjectData & ShapePainterObjectDataType;
 
+  type ShapePainterNetworkSyncDataType = {
+    cbf: boolean; // clearBetweenFrames
+    aa: Antialiasing; // antialiasing
+    ac: boolean; // absoluteCoordinates
+    fc: integer; // fillColor
+    oc: integer; // outlineColor
+    os: float; // outlineSize
+    fo: float; // fillOpacity
+    oo: float; // outlineOpacity
+    scaleX: number;
+    scaleY: number;
+    ifx: boolean; // isFlippedX
+    ify: boolean; // isFlippedY
+  };
+
+  export type ShapePainterNetworkSyncData = ObjectNetworkSyncData &
+    ShapePainterNetworkSyncDataType;
+
   /**
    * The ShapePainterRuntimeObject allows to draw graphics shapes on screen.
    */
@@ -191,6 +209,70 @@ namespace gdjs {
       return true;
     }
 
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): ShapePainterNetworkSyncData {
+      return {
+        ...super.getNetworkSyncData(syncOptions),
+        cbf: this._clearBetweenFrames,
+        aa: this._antialiasing,
+        ac: this._useAbsoluteCoordinates,
+        fc: this._fillColor,
+        oc: this._outlineColor,
+        os: this._outlineSize,
+        fo: this._fillOpacity,
+        oo: this._outlineOpacity,
+        scaleX: this.getScaleX(),
+        scaleY: this.getScaleY(),
+        ifx: this._flippedX,
+        ify: this._flippedY,
+      };
+    }
+
+    updateFromNetworkSyncData(
+      networkSyncData: ShapePainterNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
+    ): void {
+      super.updateFromNetworkSyncData(networkSyncData, options);
+
+      if (networkSyncData.cbf !== undefined) {
+        this._clearBetweenFrames = networkSyncData.cbf;
+      }
+      if (networkSyncData.aa !== undefined) {
+        this.setAntialiasing(networkSyncData.aa);
+      }
+      if (networkSyncData.ac !== undefined) {
+        this.setCoordinatesRelative(!networkSyncData.ac);
+      }
+      if (networkSyncData.fc !== undefined) {
+        this._fillColor = networkSyncData.fc;
+      }
+      if (networkSyncData.oc !== undefined) {
+        this._outlineColor = networkSyncData.oc;
+      }
+      if (networkSyncData.os !== undefined) {
+        this.setOutlineSize(networkSyncData.os);
+      }
+      if (networkSyncData.fo !== undefined) {
+        this.setFillOpacity(networkSyncData.fo);
+      }
+      if (networkSyncData.oo !== undefined) {
+        this.setOutlineOpacity(networkSyncData.oo);
+      }
+      if (networkSyncData.scaleX !== undefined) {
+        this.setScaleX(networkSyncData.scaleX);
+      }
+      if (networkSyncData.scaleY !== undefined) {
+        this.setScaleY(networkSyncData.scaleY);
+      }
+      if (networkSyncData.ifx !== undefined) {
+        this.flipX(networkSyncData.ifx);
+      }
+      if (networkSyncData.ify !== undefined) {
+        this.flipY(networkSyncData.ify);
+      }
+    }
+
     /**
      * Initialize the extra parameters that could be set for an instance.
      * @param initialInstanceData The extra parameters

Extensions/SaveState/JsExtension.js

@@ -0,0 +1,488 @@
+//@ts-check
+/// <reference path="../JsExtensionTypes.d.ts" />
+/**
+ * This is a declaration of an extension for GDevelop 5.
+ *
+ * ℹ️ Changes in this file are watched and automatically imported if the editor
+ * is running. You can also manually run `node import-GDJS-Runtime.js` (in newIDE/app/scripts).
+ *
+ * The file must be named "JsExtension.js", otherwise GDevelop won't load it.
+ * ⚠️ If you make a change and the extension is not loaded, open the developer console
+ * and search for any errors.
+ *
+ * More information on https://github.com/4ian/GDevelop/blob/master/newIDE/README-extensions.md
+ */
+
+/** @type {ExtensionModule} */
+module.exports = {
+  createExtension: function (_, gd) {
+    const extension = new gd.PlatformExtension();
+    extension
+      .setExtensionInformation(
+        'SaveState',
+        _('Save State (experimental)'),
+        _(
+          'Allows to save and load the full state of a game, usually on the device storage. A Save State, by default, contains the full state of the game (objects, variables, sounds, music, effects etc.). Using the "Save Configuration" behavior, you can customize which objects should not be saved in a Save State. You can also use the "Change the save configuration of a variable" action to change the save configuration of a variable. Finally, both objects, variables and scene/game data can be given a profile name: in this case, when saving or loading with one or more profile names specified, only the object/variables/data belonging to one of the specified profiles will be saved or loaded.'
+        ),
+        'Neyl Mahfouf',
+        'Open source (MIT License)'
+      )
+      .setExtensionHelpPath('/all-features/save-state')
+      .setCategory('Game mechanic')
+      .addInstructionOrExpressionGroupMetadata(_('Save State (experimental)'))
+      .setIcon('res/actions/saveDown.svg');
+
+    extension
+      .addAction(
+        'CreateGameSaveStateInVariable',
+        _('Save game to a variable'),
+        _(
+          'Create a Save State and save it to a variable. This is for advanced usage, prefer to use "Save game to device storage" in most cases.'
+        ),
+        _('Save game in variable _PARAM1_ (profile(s): _PARAM2_)'),
+        _('Save'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter('variable', _('Variable to store the save to'), '', false)
+      .addParameter('string', _('Profile(s) to save'), '', true)
+      .setDefaultValue('"default"')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names that must be saved. Only objects tagged with at least one of these profiles will be saved. If no profile names are specified, all objects will be saved (unless they have a "Save Configuration" behavior set to "Do not save").'
+        )
+      )
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.createGameSaveStateInVariable');
+
+    extension
+      .addAction(
+        'CreateGameSaveStateInStorage',
+        _('Save game to device storage'),
+        _('Create a Save State and save it to device storage.'),
+        _('Save game to device storage named _PARAM1_ (profile(s): _PARAM2_)'),
+        _('Save'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter('string', _('Storage key to save to'), '', false)
+      .addParameter('string', _('Profile(s) to save'), '', true)
+      .setDefaultValue('"default"')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names that must be saved. Only objects tagged with at least one of these profiles will be saved. If no profile names are specified, all objects will be saved (unless they have a "Save Configuration" behavior set to "Do not save").'
+        )
+      )
+      .setDefaultValue('no')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.createGameSaveStateInStorage');
+
+    extension
+      .addAction(
+        'RestoreGameSaveStateFromVariable',
+        _('Load game from variable'),
+        _(
+          'Restore the game from a Save State stored in the specified variable. This is for advanced usage, prefer to use "Load game from device storage" in most cases.'
+        ),
+        _(
+          'Load game from variable _PARAM1_ (profile(s): _PARAM2_, stop and restart all the scenes currently played: _PARAM3_)'
+        ),
+        _('Load'),
+        'res/actions/saveUp.svg',
+        'res/actions/saveUp.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter('variable', _('Variable to load the game from'), '', false)
+      .addParameter('string', _('Profile(s) to load'), '', true)
+      .setDefaultValue('"default"')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names that must be loaded. Only objects tagged with at least one of these profiles will be loaded - others will be left alone. If no profile names are specified, all objects will be loaded (unless they have a "Save Configuration" behavior set to "Do not save").'
+        )
+      )
+      .addParameter(
+        'yesorno',
+        _('Stop and restart all the scenes currently played?'),
+        '',
+        true
+      )
+      .setDefaultValue('no')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.restoreGameSaveStateFromVariable');
+
+    extension
+      .addAction(
+        'RestoreGameSaveStateFromStorage',
+        _('Load game from device storage'),
+        _('Restore the game from a Save State stored on the device.'),
+        _(
+          'Load game from device storage named _PARAM1_ (profile(s): _PARAM2_, stop and restart all the scenes currently played: _PARAM3_)'
+        ),
+        _('Load'),
+        'res/actions/saveUp.svg',
+        'res/actions/saveUp.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter(
+        'string',
+        _('Storage name to load the game from'),
+        '',
+        false
+      )
+      .addParameter('string', _('Profile(s) to load'), '', true)
+      .setDefaultValue('"default"')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names that must be loaded. Only objects tagged with at least one of these profiles will be loaded - others will be left alone. If no profile names are specified, all objects will be loaded.'
+        )
+      )
+      .addParameter(
+        'yesorno',
+        _('Stop and restart all the scenes currently played?'),
+        '',
+        true
+      )
+      .setDefaultValue('no')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.restoreGameSaveStateFromStorage');
+
+    extension
+      .addExpressionAndCondition(
+        'number',
+        'TimeSinceLastSave',
+        _('Time since last save'),
+        _(
+          'Time since the last save, in seconds. Returns -1 if no save happened, and a positive number otherwise.'
+        ),
+        _('Time since the last save'),
+        '',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.getSecondsSinceLastSave')
+      .setGetter('gdjs.saveState.getSecondsSinceLastSave');
+
+    extension
+      .addExpressionAndCondition(
+        'number',
+        'TimeSinceLastLoad',
+        _('Time since last load'),
+        _(
+          'Time since the last load, in seconds. Returns -1 if no load happened, and a positive number otherwise.'
+        ),
+        _('Time since the last load'),
+        '',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .useStandardParameters('number', gd.ParameterOptions.makeNewOptions())
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.getSecondsSinceLastLoad')
+      .setGetter('gdjs.saveState.getSecondsSinceLastLoad');
+
+    extension
+      .addCondition(
+        'SaveJustSucceeded',
+        _('Save just succeeded'),
+        _('The last save attempt just succeeded.'),
+        _('Save just succeeded'),
+        _('Save'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.hasSaveJustSucceeded');
+
+    extension
+      .addCondition(
+        'SaveJustFailed',
+        _('Save just failed'),
+        _('The last save attempt just failed.'),
+        _('Save just failed'),
+        _('Save'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.hasSaveJustFailed');
+
+    extension
+      .addCondition(
+        'LoadJustSucceeded',
+        _('Load just succeeded'),
+        _('The last load attempt just succeeded.'),
+        _('Load just succeeded'),
+        _('Load'),
+        'res/actions/saveUp.svg',
+        'res/actions/saveUp.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.hasLoadJustSucceeded');
+
+    extension
+      .addCondition(
+        'LoadJustFailed',
+        _('Load just failed'),
+        _('The last load attempt just failed.'),
+        _('Load just failed'),
+        _('Load'),
+        'res/actions/saveUp.svg',
+        'res/actions/saveUp.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.hasLoadJustFailed');
+
+    extension
+      .addAction(
+        'SetVariableSaveConfiguration',
+        _('Change the save configuration of a variable'),
+        _(
+          'Set if a scene or global variable should be saved in the default save state. Also allow to specify one or more profiles in which the variable should be saved.'
+        ),
+        _(
+          'Change save configuration of _PARAM1_: save it in the default save states: _PARAM2_ and in profiles: _PARAM3_'
+        ),
+        _('Advanced configuration'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter(
+        'variable',
+        _('Variable for which configuration should be changed'),
+        '',
+        false
+      )
+      .addParameter('yesorno', _('Persist in default save states'), '', false)
+      .setDefaultValue('yes')
+      .addParameter(
+        'string',
+        _('Profiles in which the variable should be saved'),
+        '',
+        true
+      )
+      .setDefaultValue('')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names in which the variable will be saved. When a save state is created with one or more profile names specified, the variable will be saved only if it matches one of these profiles.'
+        )
+      )
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.setVariableSaveConfiguration');
+
+    extension
+      .addAction(
+        'SetGameDataSaveConfiguration',
+        _('Change the save configuration of the global game data'),
+        _(
+          'Set if the global game data (audio & global variables) should be saved in the default save state. Also allow to specify one or more profiles in which the global game data should be saved.'
+        ),
+        _(
+          'Change save configuration of global game data: save them in the default save states: _PARAM1_ and in profiles: _PARAM2_'
+        ),
+        _('Advanced configuration'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter('yesorno', _('Persist in default save states'), '', false)
+      .setDefaultValue('yes')
+      .addParameter(
+        'string',
+        _('Profiles in which the global game data should be saved'),
+        '',
+        true
+      )
+      .setDefaultValue('')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names in which the global game data will be saved. When a save state is created with one or more profile names specified, the global game data will be saved only if it matches one of these profiles.'
+        )
+      )
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.setGameDataSaveConfiguration');
+
+    extension
+      .addAction(
+        'SetSceneDataSaveConfiguration',
+        _('Change the save configuration of a scene data'),
+        _(
+          'Set if the data of the specified scene (scene variables, timers, trigger once, wait actions, layers, etc.) should be saved in the default save state. Also allow to specify one or more profiles in which the scene data should be saved. Note: objects are always saved separately from the scene data (use the "Save Configuration" behavior to customize the configuration of objects).'
+        ),
+        _(
+          'Change save configuration of scene _PARAM1_: save it in the default save states: _PARAM2_ and in profiles: _PARAM3_'
+        ),
+        _('Advanced configuration'),
+        'res/actions/saveDown.svg',
+        'res/actions/saveDown.svg'
+      )
+      .addCodeOnlyParameter('currentScene', '')
+      .addParameter(
+        'sceneName',
+        _('Scene name for which configuration should be changed'),
+        '',
+        false
+      )
+      .addParameter('yesorno', _('Persist in default save states'), '', false)
+      .setDefaultValue('yes')
+      .addParameter(
+        'string',
+        _('Profiles in which the scene data should be saved'),
+        '',
+        true
+      )
+      .setDefaultValue('')
+      .setParameterLongDescription(
+        _(
+          'Comma-separated list of profile names in which the scene data will be saved. When a save state is created with one or more profile names specified, the scene data will be saved only if it matches one of these profiles.'
+        )
+      )
+      .getCodeExtraInformation()
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      )
+      .setFunctionName('gdjs.saveState.setSceneDataSaveConfiguration');
+
+    // Save Configuration behavior
+    const saveConfigurationBehavior = new gd.BehaviorJsImplementation();
+
+    saveConfigurationBehavior.updateProperty = function (
+      behaviorContent,
+      propertyName,
+      newValue
+    ) {
+      if (propertyName === 'defaultProfilePersistence') {
+        behaviorContent
+          .getChild('defaultProfilePersistence')
+          .setStringValue(newValue);
+        return true;
+      }
+      if (propertyName === 'persistedInProfiles') {
+        behaviorContent
+          .getChild('persistedInProfiles')
+          .setStringValue(newValue);
+        return true;
+      }
+
+      return false;
+    };
+
+    saveConfigurationBehavior.getProperties = function (behaviorContent) {
+      const behaviorProperties = new gd.MapStringPropertyDescriptor();
+
+      behaviorProperties
+        .getOrCreate('defaultProfilePersistence')
+        .setValue(
+          behaviorContent.getChild('defaultProfilePersistence').getStringValue()
+        )
+        .setType('Choice')
+        .setLabel(_('Persistence mode'))
+        .addChoice('Persisted', _('Include in save states (default)'))
+        .addChoice('DoNotSave', _('Do not save'));
+
+      behaviorProperties
+        .getOrCreate('persistedInProfiles')
+        .setValue(
+          behaviorContent.getChild('persistedInProfiles').getStringValue()
+        )
+        .setType('String')
+        .setLabel(_('Save profile names'))
+        .setDescription(
+          _(
+            'Comma-separated list of profile names in which the object is saved. When a save state is created with one or more profile names specified, the object will be saved only if it matches one of these profiles.'
+          )
+        )
+        .setAdvanced(true);
+
+      return behaviorProperties;
+    };
+
+    saveConfigurationBehavior.initializeContent = function (behaviorContent) {
+      behaviorContent
+        .addChild('defaultProfilePersistence')
+        .setStringValue('Persisted');
+      behaviorContent.addChild('persistedInProfiles').setStringValue('');
+    };
+
+    const sharedData = new gd.BehaviorsSharedData();
+
+    extension
+      .addBehavior(
+        'SaveConfiguration',
+        _('Save state configuration'),
+        'SaveConfiguration',
+        _('Allow the customize how the object is persisted in a save state.'),
+        '',
+        'res/actions/saveUp.svg',
+        'SaveConfiguration',
+        // @ts-ignore - TODO: Fix type being a BehaviorJsImplementation instead of an Behavior
+        saveConfigurationBehavior,
+        sharedData
+      )
+      .setQuickCustomizationVisibility(gd.QuickCustomization.Hidden)
+      .setIncludeFile('Extensions/SaveState/SaveStateTools.js')
+      .addIncludeFile(
+        'Extensions/SaveState/SaveConfigurationRuntimeBehavior.js'
+      );
+
+    return extension;
+  },
+  runExtensionSanityTests: function (gd, extension) {
+    return [];
+  },
+};

Extensions/SaveState/SaveConfigurationRuntimeBehavior.ts

@@ -0,0 +1,32 @@
+namespace gdjs {
+  // const logger = new gdjs.Logger('Save State');
+
+  export class SaveConfigurationRuntimeBehavior extends gdjs.RuntimeBehavior {
+    private readonly _defaultProfilePersistence: 'Persisted' | 'DoNotSave' =
+      'Persisted';
+    private readonly _persistedInProfiles = '';
+
+    constructor(
+      instanceContainer: gdjs.RuntimeInstanceContainer,
+      behaviorData: any,
+      owner: RuntimeObject
+    ) {
+      super(instanceContainer, behaviorData, owner);
+      this._defaultProfilePersistence =
+        behaviorData.defaultProfilePersistence || 'Persisted';
+      this._persistedInProfiles = behaviorData.persistedInProfiles || '';
+    }
+
+    getDefaultProfilePersistence() {
+      return this._defaultProfilePersistence;
+    }
+
+    getPersistedInProfiles() {
+      return this._persistedInProfiles;
+    }
+  }
+  gdjs.registerBehavior(
+    'SaveState::SaveConfiguration',
+    gdjs.SaveConfigurationRuntimeBehavior
+  );
+}

Extensions/SaveState/SaveStateTools.ts

@@ -0,0 +1,696 @@
+namespace gdjs {
+  const logger = new gdjs.Logger('Save State');
+  const debugLogger = new gdjs.Logger('Save State - Debug');
+  // Comment this to see message logs and ease debugging:
+  gdjs.Logger.getDefaultConsoleLoggerOutput().discardGroup(
+    'Save State - Debug'
+  );
+
+  type ArbitrarySaveConfiguration = {
+    defaultProfilePersistence: 'Persisted' | 'DoNotSave';
+    persistedInProfiles: Set<string>;
+  };
+
+  export type RestoreRequestOptions = {
+    profileNames: string[];
+    clearSceneStack: boolean;
+
+    fromStorageName?: string;
+    fromVariable?: gdjs.Variable;
+  };
+
+  export namespace saveState {
+    export const getIndexedDbDatabaseName = () => {
+      const gameId = gdjs.projectData.properties.projectUuid;
+      return `gdevelop-game-${gameId}`;
+    };
+    export const getIndexedDbObjectStore = () => {
+      return `game-saves`;
+    };
+    export const getIndexedDbStorageKey = (key: string) => {
+      return `save-${key}`;
+    };
+
+    const variablesSaveConfiguration: WeakMap<
+      Variable,
+      ArbitrarySaveConfiguration
+    > = new WeakMap();
+    const runtimeSceneDataSaveConfiguration: WeakMap<
+      RuntimeGame,
+      Record<string, ArbitrarySaveConfiguration>
+    > = new WeakMap();
+    const runtimeGameDataSaveConfiguration: WeakMap<
+      RuntimeGame,
+      ArbitrarySaveConfiguration
+    > = new WeakMap();
+
+    export const setVariableSaveConfiguration = (
+      _: gdjs.RuntimeScene,
+      variable: gdjs.Variable,
+      persistInDefaultProfile: boolean,
+      persistedInProfilesAsString: string
+    ) => {
+      variablesSaveConfiguration.set(variable, {
+        defaultProfilePersistence: persistInDefaultProfile
+          ? 'Persisted'
+          : 'DoNotSave',
+        persistedInProfiles: new Set(
+          parseCommaSeparatedProfileNames(persistedInProfilesAsString)
+        ),
+      });
+    };
+
+    export const setSceneDataSaveConfiguration = (
+      runtimeScene: gdjs.RuntimeScene,
+      sceneName: string,
+      persistInDefaultProfile: boolean,
+      persistedInProfilesAsString: string
+    ) => {
+      const runtimeSceneDataSaveConfigurations =
+        runtimeSceneDataSaveConfiguration.get(runtimeScene.getGame()) || {};
+
+      runtimeSceneDataSaveConfiguration.set(runtimeScene.getGame(), {
+        ...runtimeSceneDataSaveConfigurations,
+        [sceneName]: {
+          defaultProfilePersistence: persistInDefaultProfile
+            ? 'Persisted'
+            : 'DoNotSave',
+          persistedInProfiles: new Set(
+            parseCommaSeparatedProfileNames(persistedInProfilesAsString)
+          ),
+        },
+      });
+    };
+
+    export const setGameDataSaveConfiguration = (
+      runtimeScene: gdjs.RuntimeScene,
+      persistInDefaultProfile: boolean,
+      persistedInProfilesAsString: string
+    ) => {
+      runtimeGameDataSaveConfiguration.set(runtimeScene.getGame(), {
+        defaultProfilePersistence: persistInDefaultProfile
+          ? 'Persisted'
+          : 'DoNotSave',
+        persistedInProfiles: new Set(
+          parseCommaSeparatedProfileNames(persistedInProfilesAsString)
+        ),
+      });
+    };
+
+    const checkIfIsPersistedInProfiles = (
+      profileNames: string[],
+      configuration: ArbitrarySaveConfiguration | null | undefined
+    ) => {
+      if (profileNames.includes('default')) {
+        if (
+          !configuration ||
+          configuration.defaultProfilePersistence === 'Persisted'
+        ) {
+          return true;
+        }
+      }
+
+      if (configuration) {
+        for (const profileName of profileNames) {
+          if (configuration.persistedInProfiles.has(profileName)) {
+            return true;
+          }
+        }
+      }
+
+      return false;
+    };
+
+    const makeIsVariableExcludedFromSaveState =
+      (profileNames: string[]) => (variable: gdjs.Variable) => {
+        const saveConfiguration = variablesSaveConfiguration.get(variable);
+        return !checkIfIsPersistedInProfiles(
+          profileNames,
+          saveConfiguration || null
+        );
+      };
+
+    let lastSaveTime: number | null = null;
+    let lastLoadTime: number | null = null;
+    let saveJustSucceeded: boolean = false;
+    let saveJustFailed: boolean = false;
+    let loadJustSucceeded: boolean = false;
+    let loadJustFailed: boolean = false;
+
+    let restoreRequestOptions: RestoreRequestOptions | null = null;
+
+    export const getSecondsSinceLastSave = (_: RuntimeScene): number => {
+      if (!lastSaveTime) return -1;
+      return Math.floor((Date.now() - lastSaveTime) / 1000);
+    };
+    export const getSecondsSinceLastLoad = (_: RuntimeScene): number => {
+      if (!lastLoadTime) return -1;
+      return Math.floor((Date.now() - lastLoadTime) / 1000);
+    };
+    export const hasSaveJustSucceeded = (_: RuntimeScene) => {
+      return saveJustSucceeded;
+    };
+    export const hasLoadJustSucceeded = (_: RuntimeScene) => {
+      return loadJustSucceeded;
+    };
+    export const hasSaveJustFailed = (_: RuntimeScene) => {
+      return saveJustFailed;
+    };
+    export const hasLoadJustFailed = (_: RuntimeScene) => {
+      return loadJustFailed;
+    };
+    export const markSaveJustSucceeded = (_: RuntimeScene) => {
+      saveJustSucceeded = true;
+      lastSaveTime = Date.now();
+    };
+    export const markLoadJustSucceeded = (_: RuntimeScene) => {
+      loadJustSucceeded = true;
+      lastLoadTime = Date.now();
+    };
+    export const markSaveJustFailed = (_: RuntimeScene) => {
+      saveJustFailed = true;
+    };
+    export const markLoadJustFailed = (_: RuntimeScene) => {
+      loadJustFailed = true;
+    };
+
+    // Ensure that the condition "save/load just succeeded/failed" are valid only for one frame.
+    gdjs.registerRuntimeScenePostEventsCallback(() => {
+      saveJustSucceeded = false;
+      saveJustFailed = false;
+      loadJustSucceeded = false;
+      loadJustFailed = false;
+    });
+
+    gdjs.registerRuntimeScenePostEventsCallback(
+      (runtimeScene: gdjs.RuntimeScene) => {
+        checkAndRestoreGameSaveStateAtEndOfFrame(runtimeScene);
+      }
+    );
+
+    /**
+     * Create a Save State from the given game.
+     *
+     * Only objects, variables etc... tagged with at least one of the profiles
+     * given in `options.profileNames` will be saved.
+     */
+    export const createGameSaveState = (
+      runtimeGame: RuntimeGame,
+      options: {
+        profileNames: string[];
+      }
+    ) => {
+      const { profileNames } = options;
+
+      const getNetworkSyncOptions: GetNetworkSyncDataOptions = {
+        syncObjectIdentifiers: true,
+        shouldExcludeVariableFromData:
+          makeIsVariableExcludedFromSaveState(profileNames),
+        syncAllBehaviors: true,
+        syncGameVariables: true,
+        syncSceneTimers: true,
+        syncOnceTriggers: true,
+        syncSounds: true,
+        syncTweens: true,
+        syncLayers: true,
+        syncAsyncTasks: true,
+        syncSceneVisualProps: true,
+        syncFullTileMaps: true,
+      };
+
+      const shouldPersistGameData = checkIfIsPersistedInProfiles(
+        options.profileNames,
+        runtimeGameDataSaveConfiguration.get(runtimeGame)
+      );
+
+      const gameSaveState: GameSaveState = {
+        // Always persist some game data, but limit it to just the scene stack
+        // if asked to not persist the game data.
+        gameNetworkSyncData: runtimeGame.getNetworkSyncData({
+          ...getNetworkSyncOptions,
+          syncGameVariables: shouldPersistGameData,
+          syncSounds: shouldPersistGameData,
+        }),
+        layoutNetworkSyncDatas: [],
+      };
+
+      const scenes = runtimeGame.getSceneStack().getAllScenes();
+      scenes.forEach((runtimeScene, index) => {
+        gameSaveState.layoutNetworkSyncDatas[index] = {
+          sceneData: {} as LayoutNetworkSyncData,
+          objectDatas: {},
+        };
+
+        // First collect all object sync data, as they may generate unique
+        // identifiers like their networkId.
+        for (const object of runtimeScene.getAdhocListOfAllInstances()) {
+          // By default, an object which has no SaveConfiguration behavior is like
+          // it has the default profile persistence set to "Persisted".
+          let shouldPersist = profileNames.includes('default');
+
+          // @ts-ignore - access to `_behaviors` is an exceptional case for the SaveConfiguration behavior.
+          for (const behavior of object._behaviors) {
+            if (behavior instanceof gdjs.SaveConfigurationRuntimeBehavior) {
+              // This object has a SaveConfiguration behavior. Check if the configuration is set to
+              // persist it in one of the given profiles.
+              if (
+                (profileNames.includes('default') &&
+                  behavior.getDefaultProfilePersistence() === 'Persisted') ||
+                profileNames.some((profileName) =>
+                  // TODO: avoid do it for every single object instance?
+                  behavior
+                    .getPersistedInProfiles()
+                    .split(',')
+                    .map((profileName) => profileName.trim())
+                    .includes(profileName)
+                )
+              ) {
+                shouldPersist = true;
+              } else {
+                shouldPersist = false;
+              }
+            }
+          }
+
+          if (shouldPersist) {
+            const objectSyncData = object.getNetworkSyncData(
+              getNetworkSyncOptions
+            );
+            gameSaveState.layoutNetworkSyncDatas[index].objectDatas[object.id] =
+              objectSyncData;
+          }
+        }
+
+        // Collect scene data after the objects:
+        const shouldPersistSceneData = checkIfIsPersistedInProfiles(
+          options.profileNames,
+          (runtimeSceneDataSaveConfiguration.get(runtimeGame) || {})[
+            runtimeScene.getName()
+          ]
+        );
+        if (shouldPersistSceneData) {
+          const sceneData = runtimeScene.getNetworkSyncData(
+            getNetworkSyncOptions
+          );
+          if (sceneData) {
+            gameSaveState.layoutNetworkSyncDatas[index].sceneData = sceneData;
+          }
+        }
+      });
+
+      return gameSaveState;
+    };
+
+    export const createGameSaveStateInVariable = async function (
+      runtimeScene: RuntimeScene,
+      variable: gdjs.Variable,
+      commaSeparatedProfileNames: string
+    ) {
+      try {
+        const gameSaveState = createGameSaveState(runtimeScene.getGame(), {
+          profileNames: parseCommaSeparatedProfileNamesOrDefault(
+            commaSeparatedProfileNames
+          ),
+        });
+        variable.fromJSObject(gameSaveState);
+        markSaveJustSucceeded(runtimeScene);
+      } catch (error) {
+        logger.error('Error saving to variable:', error);
+        markSaveJustFailed(runtimeScene);
+      }
+    };
+
+    export const createGameSaveStateInStorage = async function (
+      runtimeScene: RuntimeScene,
+      storageKey: string,
+      commaSeparatedProfileNames: string
+    ) {
+      try {
+        const gameSaveState = createGameSaveState(runtimeScene.getGame(), {
+          profileNames: parseCommaSeparatedProfileNamesOrDefault(
+            commaSeparatedProfileNames
+          ),
+        });
+        await gdjs.indexedDb.saveToIndexedDB(
+          getIndexedDbDatabaseName(),
+          getIndexedDbObjectStore(),
+          getIndexedDbStorageKey(storageKey),
+          gameSaveState
+        );
+        markSaveJustSucceeded(runtimeScene);
+      } catch (error) {
+        logger.error('Error saving to IndexedDB:', error);
+        markSaveJustFailed(runtimeScene);
+      }
+    };
+
+    const checkAndRestoreGameSaveStateAtEndOfFrame = function (
+      runtimeScene: RuntimeScene
+    ) {
+      const runtimeGame = runtimeScene.getGame();
+
+      if (!restoreRequestOptions) return;
+      const { fromVariable, fromStorageName, profileNames, clearSceneStack } =
+        restoreRequestOptions;
+
+      // Reset it so we don't load it twice.
+      restoreRequestOptions = null;
+
+      if (fromVariable) {
+        const saveState = fromVariable.toJSObject();
+
+        try {
+          restoreGameSaveState(runtimeGame, saveState, {
+            profileNames,
+            clearSceneStack,
+          });
+          markLoadJustSucceeded(runtimeScene);
+        } catch (error) {
+          logger.error('Error loading from variable:', error);
+          markLoadJustFailed(runtimeScene);
+        }
+      } else if (fromStorageName) {
+        gdjs.indexedDb
+          .loadFromIndexedDB(
+            getIndexedDbDatabaseName(),
+            getIndexedDbObjectStore(),
+            getIndexedDbStorageKey(fromStorageName)
+          )
+          .then((jsonData) => {
+            const saveState = jsonData as GameSaveState;
+            restoreGameSaveState(runtimeGame, saveState, {
+              profileNames,
+              clearSceneStack,
+            });
+            markLoadJustSucceeded(runtimeScene);
+          })
+          .catch((error) => {
+            logger.error('Error loading from IndexedDB:', error);
+            markLoadJustFailed(runtimeScene);
+          });
+      }
+    };
+
+    const getInstanceFromNetworkId = ({
+      runtimeScene,
+      objectName,
+      networkId,
+    }: {
+      runtimeScene: gdjs.RuntimeScene;
+      objectName: string;
+      networkId: string;
+    }): gdjs.RuntimeObject | null => {
+      const instances = runtimeScene.getInstancesOf(objectName);
+      if (!instances) {
+        // object does not exist in the scene, cannot find the instance.
+        return null;
+      }
+      let instance =
+        instances.find((instance) => instance.networkId === networkId) || null;
+
+      // Check if there is already an instance with the given network ID.
+      if (instance) {
+        debugLogger.info(
+          `Found instance ${networkId}, will use it for restoring.`
+        );
+        return instance;
+      }
+
+      // Instance not found - it must have been deleted. Create it now.
+      debugLogger.info(
+        `Instance ${networkId} not found, creating instance ${objectName}.`
+      );
+      const newInstance = runtimeScene.createObject(objectName);
+      if (!newInstance) {
+        // Object does not exist in the scene, cannot create the instance.
+        return null;
+      }
+
+      newInstance.networkId = networkId;
+      return newInstance;
+    };
+
+    /**
+     * Restore the game using the given Save State.
+     *
+     * `options.profileNames` is the list of profiles to restore: only objects, variables etc... tagged with at least
+     * one of these profiles will be restored (or recreated if they don't exist, or deleted if not in the save state).
+     * Others will be left untouched.
+     *
+     * If `options.clearSceneStack` is true, all the scenes will be unloaded and re-created
+     * (meaning all instances will be re-created, variables will go back to their initial values, etc...).
+     * Otherwise, the existing scenes will be updated (or unloaded or created if the save state has different scenes).
+     */
+    export const restoreGameSaveState = (
+      runtimeGame: RuntimeGame,
+      saveState: GameSaveState,
+      options: {
+        profileNames: string[];
+        clearSceneStack: boolean;
+      }
+    ): void => {
+      const getObjectNamesToRestoreForRuntimeScene = (
+        runtimeScene: RuntimeScene
+      ): Set<string> => {
+        const allObjectData = [];
+        runtimeScene._objects.values(allObjectData);
+        return getObjectNamesIncludedInProfiles(
+          allObjectData,
+          options.profileNames
+        );
+      };
+
+      const updateFromNetworkSyncDataOptions: UpdateFromNetworkSyncDataOptions =
+        {
+          clearSceneStack:
+            options.clearSceneStack === undefined
+              ? true
+              : options.clearSceneStack,
+          getExcludedObjectNames: getObjectNamesToRestoreForRuntimeScene,
+          preventSoundsStoppingOnStartup: true,
+          clearInputs: true,
+          keepControl: true,
+          ignoreVariableOwnership: true,
+          shouldExcludeVariableFromUpdate: makeIsVariableExcludedFromSaveState(
+            options.profileNames
+          ),
+        };
+
+      // First update the game, which will update the variables,
+      // and set the scene stack to update when ready.
+      if (saveState.gameNetworkSyncData) {
+        const shouldRestoreGameData = checkIfIsPersistedInProfiles(
+          options.profileNames,
+          runtimeGameDataSaveConfiguration.get(runtimeGame)
+        );
+
+        runtimeGame.updateFromNetworkSyncData(
+          shouldRestoreGameData
+            ? saveState.gameNetworkSyncData
+            : {
+                // Disable game data restoration if asked to, but
+                // still always keep `ss` (scene stack) restoration as it's always needed.
+                ss: saveState.gameNetworkSyncData.ss,
+              },
+          updateFromNetworkSyncDataOptions
+        );
+      }
+
+      // Apply the scene stack updates, as we are at the end of a frame,
+      // we can safely do it.
+      const sceneStack = runtimeGame.getSceneStack();
+      sceneStack.applyUpdateFromNetworkSyncDataIfAny(
+        updateFromNetworkSyncDataOptions
+      );
+
+      // Then get all scenes, which we assume will be the expected ones
+      // after the load has been done, so we can update them,
+      // and create their objects.
+      const runtimeScenes = sceneStack.getAllScenes();
+      runtimeScenes.forEach((runtimeScene, index) => {
+        const layoutSyncData = saveState.layoutNetworkSyncDatas[index];
+        if (!layoutSyncData) return;
+
+        // List names of objects that must be restored
+        // (and only them - instances of others will be left alone).
+        const objectNamesToRestore =
+          getObjectNamesToRestoreForRuntimeScene(runtimeScene);
+
+        // Create objects first, so they are available for the scene update,
+        // especially so that they have a networkId defined.
+        const allLoadedNetworkIds = new Set<string>();
+        const objectDatas = layoutSyncData.objectDatas;
+        for (const id in objectDatas) {
+          const objectNetworkSyncData = objectDatas[id];
+          const objectName = objectNetworkSyncData.n;
+          if (!objectName) {
+            logger.warn('Tried to recreate an object without a name.');
+            continue;
+          }
+          if (!objectNamesToRestore.has(objectName)) {
+            // Object is in the save state, but not in the profiles to restore, don't restore it.
+            continue;
+          }
+
+          // Object is both in the save state and in the profiles to restore, restore it.
+          // Either find the existing instance with the same networkId, or create a new one.
+          const networkId = objectNetworkSyncData.networkId || '';
+          allLoadedNetworkIds.add(networkId);
+
+          const object = getInstanceFromNetworkId({
+            runtimeScene,
+            objectName: objectName,
+            networkId,
+          });
+          if (object) {
+            object.updateFromNetworkSyncData(
+              objectNetworkSyncData,
+              updateFromNetworkSyncDataOptions
+            );
+          }
+        }
+
+        // Clean instances of objects that are not in the profiles to restore but not in the save state
+        // (i.e: those who don't have a networkId, or it's not in the save state: they must not exist).
+        for (const objectName of objectNamesToRestore) {
+          // /!\ Clone the instances to avoid it being modified while iterating through them.
+          const objects = [...runtimeScene.getInstancesOf(objectName)];
+          for (const object of objects) {
+            // This is an object instance that is part of the object that are being restored,
+            // but it has not network id (created after the save state was created) or the network
+            // id is not in the save state: it's not part of the save state and must be deleted.
+            if (
+              !object.networkId ||
+              !allLoadedNetworkIds.has(object.networkId)
+            ) {
+              object.deleteFromScene();
+            }
+          }
+        }
+
+        // Update the rest of the scene last.
+        if (
+          checkIfIsPersistedInProfiles(
+            options.profileNames,
+            (runtimeSceneDataSaveConfiguration.get(runtimeGame) || {})[
+              runtimeScene.getName()
+            ]
+          )
+        ) {
+          runtimeScene.updateFromNetworkSyncData(
+            layoutSyncData.sceneData,
+            updateFromNetworkSyncDataOptions
+          );
+        }
+      });
+    };
+
+    const parseCommaSeparatedProfileNames = (
+      commaSeparatedProfileNames: string
+    ): string[] | null => {
+      if (!commaSeparatedProfileNames) return null;
+
+      return commaSeparatedProfileNames
+        .split(',')
+        .map((profileName) => profileName.trim());
+    };
+
+    const parseCommaSeparatedProfileNamesOrDefault = (
+      commaSeparatedProfileNames: string
+    ): string[] => {
+      return (
+        parseCommaSeparatedProfileNames(commaSeparatedProfileNames) || [
+          'default',
+        ]
+      );
+    };
+
+    export const restoreGameSaveStateFromVariable = async function (
+      _: gdjs.RuntimeScene,
+      variable: gdjs.Variable,
+      commaSeparatedProfileNames: string,
+      clearSceneStack: boolean
+    ) {
+      // The information is saved, so that the restore can be done
+      // at the end of the frame,
+      // and avoid possible conflicts with running events.
+      restoreRequestOptions = {
+        fromVariable: variable,
+        profileNames: parseCommaSeparatedProfileNamesOrDefault(
+          commaSeparatedProfileNames
+        ),
+        clearSceneStack,
+      };
+    };
+
+    export const restoreGameSaveStateFromStorage = async function (
+      _: gdjs.RuntimeScene,
+      storageName: string,
+      commaSeparatedProfileNames: string,
+      clearSceneStack: boolean
+    ) {
+      // The information is saved, so that the restore can be done
+      // at the end of the frame,
+      // and avoid possible conflicts with running events.
+      restoreRequestOptions = {
+        fromStorageName: storageName,
+        profileNames: parseCommaSeparatedProfileNamesOrDefault(
+          commaSeparatedProfileNames
+        ),
+        clearSceneStack,
+      };
+    };
+
+    /**
+     * Compute, by looking at the "static" object data (i.e: in the Project Data),
+     * the name of objects which must be restored, based on the given profiles.
+     */
+    const getObjectNamesIncludedInProfiles = (
+      allObjectData: ObjectData[],
+      profileNames: string[]
+    ): Set<string> => {
+      const objectNames = new Set<string>();
+      for (const objectData of allObjectData) {
+        // By default, an object which has no SaveConfiguration behavior is like
+        // it has the default profile persistence set to "Persisted".
+        let includedInProfiles = profileNames.includes('default');
+
+        for (const behaviorData of objectData.behaviors) {
+          if (behaviorData.type !== 'SaveState::SaveConfiguration') continue;
+
+          const defaultProfilePersistence =
+            behaviorData.defaultProfilePersistence === 'Persisted'
+              ? 'Persisted'
+              : 'DoNotSave';
+          const persistedInProfiles =
+            typeof behaviorData.persistedInProfiles === 'string'
+              ? behaviorData.persistedInProfiles
+                  .split(',')
+                  .map((profileName: string) => profileName.trim())
+              : [];
+
+          // This object has a SaveConfiguration behavior. Check if the configuration is set to
+          // persist it in one of the given profiles.
+          includedInProfiles = false;
+
+          if (
+            (profileNames.includes('default') &&
+              defaultProfilePersistence === 'Persisted') ||
+            profileNames.some((profileName) =>
+              persistedInProfiles.includes(profileName)
+            )
+          ) {
+            // This object must be persisted in one of the given profile.
+            includedInProfiles = true;
+          }
+        }
+
+        if (includedInProfiles) {
+          objectNames.add(objectData.name);
+        }
+      }
+
+      return objectNames;
+    };
+  }
+}

Extensions/Spine/managers/pixi-spine-atlas-manager.ts

@@ -202,16 +202,7 @@ namespace gdjs {
       this._loadingSpineAtlases.clear();
     }
 
-    /**
-     * Unload the specified list of resources:
-     * this clears the Spine atlases loaded in this manager.
-     *
-     * Usually called when scene resoures are unloaded.
-     *
-     * @param resourcesList The list of specific resources
-     */
-    unloadResourcesList(resourcesList: ResourceData[]): void {
-      resourcesList.forEach((resourceData) => {
+    unloadResource(resourceData: ResourceData): void {
       const loadedSpineAtlas = this._loadedSpineAtlases.get(resourceData);
       if (loadedSpineAtlas) {
         loadedSpineAtlas.dispose();
@@ -223,7 +214,6 @@ namespace gdjs {
         loadingSpineAtlas.then((atl) => atl.dispose());
         this._loadingSpineAtlases.delete(resourceData);
       }
-      });
     }
   }
 }

Extensions/Spine/managers/pixi-spine-manager.ts

@@ -127,21 +127,11 @@ namespace gdjs {
       this._loadedSpines.clear();
     }
 
-    /**
-     * Unload the specified list of resources:
-     * this clears the Spine skeleton data loaded in this manager.
-     *
-     * Usually called when scene resoures are unloaded.
-     *
-     * @param resourcesList The list of specific resources
-     */
-    unloadResourcesList(resourcesList: ResourceData[]): void {
-      resourcesList.forEach((resourceData) => {
+    unloadResource(resourceData: ResourceData): void {
       const loadedSpine = this._loadedSpines.get(resourceData);
       if (loadedSpine) {
         this._loadedSpines.delete(resourceData);
       }
-      });
     }
   }
 }

Extensions/Spine/spineruntimeobject.ts

@@ -53,6 +53,8 @@ namespace gdjs {
 
     readonly spineResourceName: string;
 
+    static isHitBoxesUpdateDisabled = false;
+
     /**
      * @param instanceContainer The container the object belongs to.
      * @param objectData The object data used to initialize the object
@@ -74,6 +76,10 @@ namespace gdjs {
       this.setAnimationIndex(0);
       this._renderer.updateAnimation(0);
 
+      if (SpineRuntimeObject.isHitBoxesUpdateDisabled) {
+        this.hitBoxes.length = 0;
+      }
+
       // *ALWAYS* call `this.onCreated()` at the very end of your object constructor.
       this.onCreated();
     }
@@ -111,9 +117,11 @@ namespace gdjs {
       return true;
     }
 
-    getNetworkSyncData(): SpineNetworkSyncData {
+    getNetworkSyncData(
+      syncOptions: GetNetworkSyncDataOptions
+    ): SpineNetworkSyncData {
       return {
-        ...super.getNetworkSyncData(),
+        ...super.getNetworkSyncData(syncOptions),
         opa: this._opacity,
         scaX: this.getScaleX(),
         scaY: this.getScaleY(),
@@ -127,8 +135,11 @@ namespace gdjs {
       };
     }
 
-    updateFromNetworkSyncData(syncData: SpineNetworkSyncData): void {
-      super.updateFromNetworkSyncData(syncData);
+    updateFromNetworkSyncData(
+      syncData: SpineNetworkSyncData,
+      options: UpdateFromNetworkSyncDataOptions
+    ): void {
+      super.updateFromNetworkSyncData(syncData, options);
 
       if (syncData.opa !== undefined && syncData.opa !== this._opacity) {
         this.setOpacity(syncData.opa);
@@ -183,6 +194,14 @@ namespace gdjs {
       }
     }
 
+    updateHitBoxes(): void {
+      if (SpineRuntimeObject.isHitBoxesUpdateDisabled) {
+        return;
+      }
+
+      super.updateHitBoxes();
+    }
+
     extraInitializationFromInitialInstance(
       initialInstanceData: InstanceData
     ): void {

Extensions/SystemInfo/Extension.cpp

@@ -13,7 +13,8 @@ void DeclareSystemInfoExtension(gd::PlatformExtension& extension) {
       .SetExtensionInformation(
           "SystemInfo",
           _("System information"),
-          _("Get information about the system and device running the game."),
+          _("Conditions to check if the device has a touchscreen, is a mobile, "
+            "or if the game runs as a preview."),
           "Florian Rival",
           "Open source (MIT License)")
       .SetCategory("Advanced");

Extensions/TextInput/JsExtension.js

@@ -78,6 +78,9 @@ module.exports = {
       } else if (propertyName === 'disabled') {
         objectContent.disabled = newValue === '1';
         return true;
+      } else if (propertyName === 'spellCheck') {
+        objectContent.spellCheck = newValue === '1';
+        return true;
       } else if (propertyName === 'maxLength') {
         objectContent.maxLength = newValue;
         return true;
@@ -160,6 +163,13 @@ module.exports = {
         .setLabel(_('Disabled'))
         .setGroup(_('Field'));
 
+      objectProperties
+        .getOrCreate('spellCheck')
+        .setValue(objectContent.spellCheck ? 'true' : 'false')
+        .setType('boolean')
+        .setLabel(_('Enable spell check'))
+        .setGroup(_('Field'));
+
       objectProperties
         .getOrCreate('textColor')
         .setValue(objectContent.textColor || '0;0;0')
@@ -272,6 +282,7 @@ module.exports = {
       borderWidth: 1,
       readOnly: false,
       disabled: false,
+      spellCheck: false,
       paddingX: 2,
       paddingY: 1,
       textAlign: 'left',
@@ -592,6 +603,21 @@ module.exports = {
       .setFunctionName('setDisabled')
       .setGetter('isDisabled');
 
+    object
+      .addExpressionAndConditionAndAction(
+        'boolean',
+        'SpellCheck',
+        _('Spell check enabled'),
+        _('spell check is enabled'),
+        _('spell check enabled'),
+        '',
+        'res/conditions/text24_black.png'
+      )
+      .addParameter('object', _('Text input'), 'TextInputObject', false)
+      .useStandardParameters('boolean', gd.ParameterOptions.makeNewOptions())
+      .setFunctionName('setSpellCheck')
+      .setGetter('isSpellCheckEnabled');
+
     // Other expressions/conditions/actions:
 
     // Deprecated