Update animation.ts

src/Animations/animation.ts

@@ -553,6 +553,7 @@ export class Animation {
      */
     public addEvent(event: AnimationEvent): void {
         this._events.push(event);
+        this._events.sort((a, b) => a.frame - b.frame);
     }
 
     /**
@@ -1302,4 +1303,4 @@ export class Animation {
 }
 
 _TypeStore.RegisteredTypes["BABYLON.Animation"] = Animation;
-Node._AnimationRangeFactory = (name: string, from: number, to: number) => new AnimationRange(name, from, to);
+Node._AnimationRangeFactory = (name: string, from: number, to: number) => new AnimationRange(name, from, to);