cocos2d-x拖动按钮实现

bool MenuMove::init()

{

    if (!Layer::init()) {

        return false;

    }

    menu=Sprite::create("CloseSelected.png");

    menu->setPosition(Vec2::ZERO);

    menu->setAnchorPoint(Vec2(180,180));

    addChild(menu);

    auto dis=Director::getInstance()->getEventDispatcher();

    auto lis=EventListenerTouchOneByOne::create();

    lis->onTouchBegan=[=](Touch* ptouch, Event* pevent)

    {

        return true;

    };

     lis->onTouchEnded=[=](Touch* ptouch, Event* pevent)

    {

        

    };

     lis->onTouchMoved=[=](Touch* ptouch, Event* pevent)

    {

        Vec2 p=ptouch->getLocation();

        auto p1=this->convertToNodeSpace(p);

        menu->setPosition(p1);

    };

    dis->addEventListenerWithSceneGraphPriority(lis, this);

    this->Remote();

    return true;

}