Cocos2d-JS/Cocos-Creator将触控监听器添加到特定节点

我想在触摸时拖动一个特定的精灵。我想知道我是否只能将事件侦听器添加到特定节点,这样我就不必在为每个节点启动特定的拖动功能之前检查哪个节点被触碰了。当在特定节点外触碰时,以下代码也会“触发”。

this.directionDial = new cc.Node()
    this.directionDial.graphics = this.directionDial.addComponent(cc.Graphics)
    this.node.addChild(this.directionDial)
this.directionDial.graphics.lineWidth = 2;
    this.directionDial.graphics.strokeColor = cc.Color.RED;
    this.directionDial.graphics.circle(80, 0, 10);
    this.directionDial.graphics.stroke();

    var _this = this;

    // Touch control 
    cc.eventManager.addListener({
        event: cc.EventListener.TOUCH_ONE_BY_ONE,
        swallowTouches: true,
        onTouchBegan: function (touch, event) {
            //do something
            _this.forceDirection = 1;
            _this.displayDirection()
            return true;
        }
    }, this.directionDial);