舞台是固定大小的，所展示出的一面，世界是大小可设置的，甚至无限大的。      摄像机大小默认是世界大小，如果设置世界大小很大 摄像机就可以移动啦， 例子： ~~~ var play = function(game){ this.init=function(){} this.preload = function(){ var fj = game.add.image(0,0,'fj') fj.anchor = {x:0.5,y:0.5} //设置图片锚点 } this.create = function(){ console.log('play') game.world.setBounds(0,0,2000,600)//设置是世界大小 参数 左上角xy坐标，宽高 } this.update = function(){ var keys = game.input.keyboard.createCursorKeys() if(keys.right.isDown){game.camera.x += 1} else if(keys.left.isDown){game.camera.x -= 1} else if(keys.down.isDown){game.camera.y += 1} else if(keys.up.isDown){game.camera.y -= 1} } this.render = function(){} } ~~~ 相机即可跟着键盘移动而移动啦 相机聚焦到某个物体 ~~~ var play = function(game){ this.init=function(){} this.preload = function(){ var fj = game.add.image(0,0,'fj') } this.create = function(){ console.log('play') game.world.setBounds(0,0,2000,600)//设置是世界大小 参数 左上角xy坐标，宽高 pig = game.add.image(200,300,'pig') pig.anchor.set(0.5,0.5) game.camera.focusOn(pig) //相机聚焦到小猪上 } this.update = function(){ var keys = game.input.keyboard.createCursorKeys() if(keys.right.isDown){game.camera.x += 1} else if(keys.left.isDown){game.camera.x -= 1} else if(keys.down.isDown){game.camera.y += 1} else if(keys.up.isDown){game.camera.y -= 1} } this.render = function(){} } ~~~  让相机跟随小猪移动` ~~~ game.camera.follow(pig) ~~~`