void HelloWorld::onEnter(){	Layer::onEnter();	log("HelloWorld onEnter");	// 创建一个事件监听器 OneByOne 为单点触摸	auto listener = EventListenerTouchOneByOne::create();	// 设置是否吞没事件，在 onTouchBegan 方法返回 true 时吞没	listener->setSwallowTouches(true);	// onTouchBegan 事件回调函数	listener->onTouchBegan = CC_CALLBACK_2(HelloWorld::touchBegan, this);	// onTouchMoved 事件回调函数	listener->onTouchMoved =  CC_CALLBACK_2(HelloWorld::touchMoved, this);	// onTouchEnded 事件回调函数	listener->onTouchEnded =  CC_CALLBACK_2(HelloWorld::touchEnded, this);	// 注册监听器	EventDispatcher* eventDispatcher = Director::getInstance()->getEventDispatcher();	eventDispatcher->addEventListenerWithSceneGraphPriority(listener, getChildByTag(kBoxA_Tag));	eventDispatcher->addEventListenerWithSceneGraphPriority(listener->clone(), getChildByTag(kBoxB_Tag));	eventDispatcher->addEventListenerWithSceneGraphPriority(listener->clone(), getChildByTag(kBoxC_Tag));}bool HelloWorld::touchBegan(Touch* touch, Event* event){	// 获取事件所绑定的 target 	auto target = static_cast
    
     (event->getCurrentTarget());	// 获取当前点击点所在相对按钮的位置坐标	Vec2 locationInNode = target->convertToNodeSpace(touch->getLocation());	Size s = target->getContentSize();	Rect rect = Rect(0, 0, s.width, s.height);	// 点击范围判断检测	if (rect.containsPoint(locationInNode))	{		log("sprite x = %f, y = %f ", locationInNode.x, locationInNode.y);		log("sprite tag = %d", target->getTag());		target->runAction(ScaleBy::create(0.06f, 1.06f)); 		return true;	}	return false;}void HelloWorld::touchMoved(Touch *touch, Event *event){	log("onTouchMoved");	auto target = static_cast
     
      (event->getCurrentTarget());	// 移动当前按钮精灵的坐标位置	target->setPosition(target->getPosition() + touch->getDelta());}void HelloWorld::touchEnded(Touch *touch, Event *event){	log("onTouchEnded");	auto target = static_cast
      
       (event->getCurrentTarget());	log("sprite onTouchesEnded.. ");	Vec2 locationInNode = target->convertToNodeSpace(touch->getLocation());	Size s = target->getContentSize();	Rect rect = Rect(0, 0, s.width, s.height);	// 点击范围判断检测	if (rect.containsPoint(locationInNode))	{		log("sprite x = %f, y = %f ", locationInNode.x, locationInNode.y);		log("sprite tag = %d", target->getTag());		target->runAction(ScaleTo::create(0.06f, 1.0f)); 	}}void HelloWorld::onExit(){	Layer::onExit();	log("HelloWorld onExit");	Director::getInstance()->getEventDispatcher()->removeAllEventListeners();}