var Class = require('../utils/Class'); 
var DisplayList = require('./DisplayList'); 
var PluginManager = require('../plugins/PluginManager'); 
var DisplayListPlugin = new Class({ 
Extends: DisplayList,
initialize: function DisplayListPlugin(scene){ 
this.scene = scene; 
this.systems = scene.sys; 
if (!scene.sys.settings.isBooted) { 
scene.sys.events.once('boot', this.boot, this); 
} 
DisplayList.call(this); 
} 
,
boot: function (){ 
var eventEmitter = this.systems.events; 
eventEmitter.on('shutdown', this.shutdown, this); 
eventEmitter.on('destroy', this.destroy, this); 
} 
,
shutdown: function (){ 
this.removeAll(); 
} 
,
destroy: function (){ 
this.shutdown(); 
} 
}
); 
PluginManager.register('DisplayListPlugin', DisplayListPlugin, 'displayList'); 
module.exports = DisplayListPlugin;