var Class = require('../../utils/Class'); 
var GameObjectFactory = new Class({ 
initialize: function GameObjectFactory(scene){ 
this.scene = scene; 
this.displayList; 
this.updateList; 
} 
,
boot: function (sys){ 
this.displayList = sys.displayList; 
this.updateList = sys.updateList; 
} 
,
existing: function (child){ 
if (child.renderCanvas || child.renderWebGL) { 
this.displayList.add(child); 
} 
if (child.preUpdate) { 
this.updateList.add(child); 
} 
return child; 
} 
,
destroy: function (){ 
this.scene = null ; 
this.displayList = null ; 
this.updateList = null ; 
} 
}
); 
GameObjectFactory.register = function (type, factoryFunction){ 
if (!GameObjectFactory.prototype.hasOwnProperty(type)) { 
GameObjectFactory.prototype[type] = factoryFunction; 
} 
} 
; 
module.exports = GameObjectFactory;