cocos2dx-触摸事件

//创建一个精灵
    Sprite *spriteTest = Sprite::create("1.png");
    spriteTest->setPosition(Point(100,100));
    this->addChild(spriteTest);
   //创建一个单点触摸事件监听
    auto listener = EventListenerTouchOneByOne::create();
    //向下传递触摸
    listener->setSwallowTouches(true);
    //触摸回调
    listener->onTouchBegan = [](Touch *touch,Event *event)
    {
        auto target = event->getCurrentTarget();
        Point locationInNode = target->convertToNodeSpace(touch->getLocation());
        Size size = target->getContentSize();
        Rect rect = Rect(0, 0, size.width, size.height);
        if (rect.containsPoint(locationInNode)) {
            CCLOG("sprite began... x = %f, y = %f", locationInNode.x, locationInNode.y);
            target->setOpacity(180);
            return true;
        }
        return false;
    };
    
    listener->onTouchMoved = [](Touch *touch,Event *event)
    {
        auto target = event->getCurrentTarget();
        target->setPosition(target->getPosition()+touch->getDelta());
    };
    
    listener->onTouchEnded = [](Touch *touch,Event *event)
    {
        auto target = event->getCurrentTarget();
        target->setOpacity(255);
    };
    
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, spriteTest);