[WIP] Manipulate instances in the embedded game editor

Core/GDCore/Project/InitialInstance.h

@@ -365,6 +365,12 @@ class GD_CORE_API InitialInstance {
    * the same initial instance between serialization.
    */
   InitialInstance& ResetPersistentUuid();
+
+  /**
+   * \brief Reset the persistent UUID used to recognize
+   * the same initial instance between serialization.
+   */
+  const gd::String& GetPersistentUuid() { return persistentUuid; };
   ///@}
 
  private:

Extensions/3D/A_RuntimeObject3DRenderer.ts

@@ -30,6 +30,14 @@ namespace gdjs {
       );
     }
 
+    getObjectPositionFrom3DRendererObject() {
+      return {
+        x: this._threeObject3D.position.x - this._object.getWidth() / 2,
+        y: this._threeObject3D.position.y - this._object.getHeight() / 2,
+        z: this._threeObject3D.position.z - this._object.getDepth() / 2,
+      };
+    }
+
     updateRotation() {
       this._threeObject3D.rotation.set(
         gdjs.toRad(this._object.getRotationX()),

GDJS/Runtime/debugger-client/abstract-debugger-client.ts

@@ -262,6 +262,8 @@ namespace gdjs {
         that.sendProfilerStarted();
       } else if (data.command === 'profiler.stop') {
         runtimeGame.stopCurrentSceneProfiler();
+      } else if (data.command === 'instances.updated') {
+        runtimeGame._editor.reloadInstances(data.payload);
       } else if (data.command === 'hotReload') {
         that._hotReloader.hotReload().then((logs) => {
           that.sendHotReloaderLogs(logs);
@@ -636,11 +638,23 @@ namespace gdjs {
       );
     }
 
-    sendInstancesUpdated(runtimeObjects: gdjs.RuntimeObject[]): void {
+    sendInstancesUpdated(
+      objectUpdates: Array<{
+        object: RuntimeObject3D;
+        position: { x: number; y: number; z: number };
+      }>,
+      layoutName: string
+    ): void {
       this._sendMessage(
         circularSafeStringify({
           command: 'instances.updated',
-          payload: 'TODO',
+          payload: {
+            layoutName,
+            instances: objectUpdates.map((objectUpdate) => ({
+              persistentUuid: objectUpdate.object.persistentUuid,
+              position: objectUpdate.position,
+            })),
+          },
         })
       );
     }