var GameObjectFactory = require('../GameObjectFactory'); 
var ParticleEmitterManager = require('./ParticleEmitterManager'); 
GameObjectFactory.register('particles', function (key, frame, emitters){ 
var manager = new ParticleEmitterManager(this.scene, key, frame, emitters); 
this.displayList.add(manager); 
this.updateList.add(manager); 
return manager; 
} 
);