对于纹理的合理使用，可以降低IO的消耗，因此通过这节课后，以后加载精灵，最好都使用TextureCache.addImage();这样下次使用时将直接返回该纹理。引用之前加载的纹理可以减少 GPU 与 cpu 的内存消耗。顺便复习了一下上周学习的内容单点触摸和动作。附上API链接供参考：http://api.cocos.com/cn/de/d33/classcocos2d_1_1_texture_cache.html#details

代码如下：

var HelloWorldLayer = cc.Layer.extend({

sprite:null,

ctor:function () {

this._super();

var size = cc.winSize;

var bg_texture = cc.textureCache.addImage("res/bg.jpg");

var hero1_texture = cc.textureCache.addImage("res/h2.png");

var bg = new cc.Sprite(bg_texture);

this.addChild(bg,0);

bg.setPosition(size.width/2,size.height/2);

var hero = new cc.Sprite(hero1_texture);

hero.setTag(100);

this.addChild(hero,1);

hero.setScale(0.1);

var act1 = new cc.RotateTo(2,180);

var act2 = new cc.FadeTo(2,1);

var act3 = new cc.FadeIn(2);

var act4 = new cc.RotateTo(2,360);

hero.runAction(cc.sequence(act1,act2,act3,act4));

hero.setPosition(200,200);

return true;

},

onEnter:function(){

this._super();

cc.eventManager.addListener({

event:cc.EventListener.TOUCH_ONE_BY_ONE,

swallowTouches:true,

onTouchBegan:this.touchbegan.bind(this),

onTouchMoved:this.touchmoved,

onTouchEnded:this.touchended,

},this);

},

touchbegan:function(touch,event){

var nowhero = event.getCurrentTarget().getChildByTag(100);

var act = new cc.moveTo(2,touch.getLocationX(),touch.getLocationY());

nowhero.runAction(act);

}

});

var HelloWorldScene = cc.Scene.extend({

onEnter:function () {

this._super();

var layer = new HelloWorldLayer();

this.addChild(layer);

}

});

最后附上作业链接：

http://www.cocoscvp.com/usercode/2016_04_22/9a5d3f6b39c64a368256ecc5b90124f54625a576/