Cocos2d-x设置吞没单击属性来避免精灵重叠被点击后的事件续传

代码如下:

Size visibleSize = Director::getInstance()->getVisibleSize();

    /* create two sprites which have overlapped parts */
    Sprite* sp1 = Sprite::create("sprite1.png");
    sp1->setPosition(Point(visibleSize.width * 0.5f, visibleSize.height * 0.5f));
    this->addChild(sp1);

    Sprite* sp2 = Sprite::create("sprite2.png");
    sp2->setPosition(Point(visibleSize.width * 0.5f, visibleSize.height * 0.5f));
    this->addChild(sp2);

    auto listener = EventListenerTouchOneByOne::create();
    listener->setSwallowTouches(true);
    listener->onTouchBegan = [](Touch* touch, Event* event){
        /* get the target bind by the touch event listener */
        auto target = static_cast<Sprite*>(event->getCurrentTarget());

        Point pos = Director::getInstance()->convertToGL(touch->getLocationInView());

        /* judge if the touch position inside the bounding box of sprite */
        if (target->getBoundingBox().containsPoint(pos))
        {
            /* set the opacity of the sprite */
            target->setOpacity(100);

            return true;
        }

        return false;
    };
    listener->onTouchEnded = [](Touch* touch, Event* event){
        /* restore the opacity of the sprite */
        auto target = static_cast<Sprite*>(event->getCurrentTarget());
        target->setOpacity(255);
    };

    /* register the touch event listener by event dispatcher to bind sprite1 */
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, sp1);

    /* register the touch event listener by event dispatcher to bind sprite2 */
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener->clone(), sp2);