Added new action "Jump emitter forward in time" (#4985)

* This is particularly useful to let emitters create lot of particles first then continue at a slower rate

Extensions/ParticleSystem/ExtensionSubDeclaration3.cpp

@@ -372,4 +372,15 @@ void ExtensionSubDeclaration3(gd::ObjectMetadata& obj) {
                     _("Setup"),
                     "CppPlatform/Extensions/particleSystemicon16.png")
       .AddParameter("object", _("Object"), "ParticleEmitter", false);
+
+  obj.AddAction("JumpEmitterForwardInTime",
+                _("Jump emitter forward in time"),
+                _("Simulate the passage of time for an emitter, "
+                  "including creating and moving particles"),
+                _("Jump _PARAM0_ forward in time by _PARAM1_ seconds"),
+                _("Advanced"),
+                "CppPlatform/Extensions/particleSystemicon24.png",
+                "CppPlatform/Extensions/particleSystemicon16.png")
+      .AddParameter("object", _("Object"), "ParticleEmitter")
+      .AddParameter("number", _("Seconds of time"));
 }

Extensions/ParticleSystem/JsExtension.cpp

@@ -178,6 +178,8 @@ class ParticleSystemJsExtension : public gd::PlatformExtension {
         .SetFunctionName("setTexture")
         .SetGetter("getTexture");
     conditions["ParticleSystem::Texture"].SetFunctionName("getTexture");
+    actions["ParticleSystem::JumpEmitterForwardInTime"].SetFunctionName(
+        "jumpEmitterForwardInTime");
 
     strExpressions["Texture"].SetFunctionName("getTexture");
     expressions["CurrentParticleCount"].SetFunctionName("getParticleCount");

Extensions/ParticleSystem/particleemitterobject.ts

@@ -849,6 +849,10 @@ namespace gdjs {
         }
       }
     }
+
+    jumpEmitterForwardInTime(timeSkipped: number): void {
+      this._renderer.update(timeSkipped);
+    }
   }
   gdjs.registerObject(
     'ParticleSystem::ParticleEmitter',