給精靈綁定點擊事件

var touchedSprite = cc.Sprite.extend({
    _touchBegan : null,
    onEnter : function(){
        this.initWithFile('res/CloseNormal.png');
        //綁定事件監聽
        cc.registerTargetedDelegate(0, true, this);
        this.setAnchorPoint(0.5, 0.5);
        this._touchEnabled=true;
        this._super();
    },
    touchRect:function(){
        return this.getBoundingBoxToWorld();
    },
    onTouchBegan : function(touches, event){
        var rect = this.touchRect();
        var point = touches.getLocation();
        if(cc.rectContainsPoint(rect, point)){
            cc.log('touch began');
            this.clickAction();
            this._touchBegan = true;
        }
        return true;
    },
    onTouchEnded : function(touches, event){
        if(this._touchBegan){
            this._touchBegan = false;
            cc.log('touch end')
        }
    },
    onTouchMoved : function(touches, event){
        this.setPosition(touches.getLocation());
    },
    clickAction : function(){
        var big = cc.ScaleTo.create(0.5, 2, 2);
        var small = cc.ScaleTo.create(0.5, 1, 1);
        var actionArray = new Array(big, small);
        var seq = cc.Sequence.create(actionArray);
        this.runAction(cc.RepeatForever.create(seq));
    }
});