cocos2d-x 3.x : setup touch event

HelloWorldScene.cpp

bool HelloWorld::init()
{
    // ...
    auto listener = EventListenerTouchOneByOne::create();
    listener->onTouchBegan = CC_CALLBACK_2(HelloWorld::onTouchBegan, this);
    listener->onTouchMoved = CC_CALLBACK_2(HelloWorld::onTouchMoved, this);
    listener->onTouchEnded = CC_CALLBACK_2(HelloWorld::onTouchEnded, this);
    this->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);
    
    // ...
}

bool HelloWorld::onTouchBegan(cocos2d::Touch *touch, cocos2d::Event *unused_event)
{
    Director *pDirector = Director::getInstance();
    Point touchPoint = pDirector->convertToGL(touch->getLocationInView());
    return true;
}

void HelloWorld::onTouchMoved(cocos2d::Touch *touch, cocos2d::Event *unused_event)
{
}

void HelloWorld::onTouchEnded(cocos2d::Touch *touch, cocos2d::Event *unused_event)
{
}

HelloWorldScene.h

class HelloWorld : public cocos2d::Layer
{
    // ...
    virtual bool onTouchBegan(cocos2d::Touch *touch, cocos2d::Event *unused_event);
    virtual void onTouchMoved(cocos2d::Touch *touch, cocos2d::Event *unused_event);
    virtual void onTouchEnded(cocos2d::Touch *touch, cocos2d::Event *unused_event);
}