text: (function()
  {
  	var Sprite = Laya.Sprite;
  	var Stage = Laya.Stage;
  	var Browser = Laya.Browser;
  	var WebGL = Laya.WebGL;
  	var Render = Laya.Render;
  
  	var stageWidth = 800;
  	var stageHeight = 600;
  
  	var Matter = Browser.window.Matter;
  	var LayaRender = Browser.window.LayaRender;
  
  	var mouseConstraint;
  	var engine;
  
  	(function()
  	{
  		// 不支持WebGL时自动切换至Canvas
  		Laya.init(stageWidth, stageHeight, WebGL);
  
  		Laya.stage.alignV = Stage.ALIGN_MIDDLE;
  		Laya.stage.alignH = Stage.ALIGN_CENTER;
  
  		Laya.stage.scaleMode = "showall";
  		Laya.stage.bgColor = "#232628";
  
  		setup();
  	})();
  
  	function setup()
  	{
  		initMatter();
  		initWorld();
  
  		Laya.stage.on("resize", this, onResize);
  	}
  
  	function initMatter()
  	{
  		var gameWorld = new Sprite();
  		Laya.stage.addChild(gameWorld);
  
  		// 初始化物理引擎
  		engine = Matter.Engine.create(
  		{
  			enableSleeping: true
  		});
  		Matter.Engine.run(engine);
  
  		var render = LayaRender.create(
  		{
  			engine: engine,
  			container: gameWorld,
  			width: stageWidth,
  			height: stageHeight,
  			options:
  			{
  				wireframes: false
  			}
  		});
  		LayaRender.run(render);
  
  		mouseConstraint = Matter.MouseConstraint.create(engine,
  		{
  			element: Render.canvas
  		});
  		Matter.World.add(engine.world, mouseConstraint);
  		render.mouse = mouseConstraint.mouse;
  	}
  
  	function initWorld()
  	{
  		var cradle = Matter.Composites.newtonsCradle(280, 100, 5, 30, 200);
  		Matter.World.add(engine.world, cradle);
  		Matter.Body.translate(cradle.bodies[0],
  		{
  			x: -180,
  			y: -100
  		});
  
  		cradle = Matter.Composites.newtonsCradle(280, 380, 7, 20, 140);
  		Matter.World.add(engine.world, cradle);
  		Matter.Body.translate(cradle.bodies[0],
  		{
  			x: -140,
  			y: -100
  		});
  	}
  
  	function onResize()
  	{
  		// 设置鼠标的坐标缩放
  		Matter.Mouse.setScale(mouseConstraint.mouse,
  		{
  			x: 1 / (Laya.stage.clientScaleX * Laya.stage._canvasTransform.a),
  			y: 1 / (Laya.stage.clientScaleY * Laya.stage._canvasTransform.d)
  		});
  	}
  })();