Cocos2dx: Detecting Multiple Touches

In .h file:

class HelloWorld : public cocos2d::Layer

{

public:

    // there's no 'id' in cpp, so we recommend returning the class instance pointer

    static cocos2d::Scene* createScene();

    virtual bool init();

    

    // implement the "static create()" method manually

    CREATE_FUNC(HelloWorld);

    

    void onTouchesBegan(const std::vector<cocos2d::Touch*> &touches, cocos2d::Event *event);

    void onTouchesMoved(const std::vector<cocos2d::Touch*> &touches, cocos2d::Event *event);

    void onTouchesEnded(const std::vector<cocos2d::Touch*> &touches, cocos2d::Event *event);

};

Implementation:

bool HelloWorld::init()

{

    if ( !Layer::init() )

    {

        return false;

    }

    

    auto listener = EventListenerTouchAllAtOnce::create();

    //Using CC_CALLBACK_2 because onTouchesXXX receives 2 params

    listener->onTouchesBegan = CC_CALLBACK_2(HelloWorld::onTouchesBegan, this);

    listener->onTouchesMoved = CC_CALLBACK_2(HelloWorld::onTouchesMoved, this);

    listener->onTouchesEnded = CC_CALLBACK_2(HelloWorld::onTouchesEnded, this);

    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    return true;

}

void HelloWorld::onTouchesBegan(const std::vector<cocos2d::Touch*> &touches, 

                                cocos2d::Event* event){

    CCLOG("MULTI TOUCH BEGAN");

}

void HelloWorld::onTouchesMoved(const std::vector<cocos2d::Touch*> &touches, 

                                cocos2d::Event* event){

    CCLOG("MULTI TOUCHES HAVE MOVED");

}

void HelloWorld::onTouchesEnded(const std::vector<cocos2d::Touch*> &touches, 

                                cocos2d::Event* event){

    CCLOG("MULTI TOUCHES HAVE ENDED");

}