var Class = require('../utils/Class'); 
var PluginCache = require('../plugins/PluginCache'); 
var SceneEvents = require('../scene/events'); 
var GameObjectFactory = new Class({ 
initialize: function GameObjectFactory(scene){ 
this.scene = scene; 
this.systems = scene.sys; 
this.displayList; 
this.updateList; 
scene.sys.events.once(SceneEvents.BOOT, this.boot, this); 
scene.sys.events.on(SceneEvents.START, this.start, this); 
} 
,
boot: function (){ 
this.displayList = this.systems.displayList; 
this.updateList = this.systems.updateList; 
this.systems.events.once(SceneEvents.DESTROY, this.destroy, this); 
} 
,
start: function (){ 
this.systems.events.once(SceneEvents.SHUTDOWN, this.shutdown, this); 
} 
,
existing: function (child){ 
if (child.renderCanvas || child.renderWebGL) { 
this.displayList.add(child); 
} 
if (child.preUpdate) { 
this.updateList.add(child); 
} 
return child; 
} 
,
shutdown: function (){ 
this.systems.events.off(SceneEvents.SHUTDOWN, this.shutdown, this); 
} 
,
destroy: function (){ 
this.shutdown(); 
this.scene.sys.events.off(SceneEvents.START, this.start, this); 
this.scene = null ; 
this.systems = null ; 
this.displayList = null ; 
this.updateList = null ; 
} 
}
); 
GameObjectFactory.register = function (factoryType, factoryFunction){ 
if (!GameObjectFactory.prototype.hasOwnProperty(factoryType)) { 
GameObjectFactory.prototype[factoryType] = factoryFunction; 
} 
} 
; 
GameObjectFactory.remove = function (factoryType){ 
if (GameObjectFactory.prototype.hasOwnProperty(factoryType)) { 
delete GameObjectFactory.prototype[factoryType]; 
} 
} 
; 
PluginCache.register('GameObjectFactory', GameObjectFactory, 'add'); 
module.exports = GameObjectFactory;