cocos2d 动作回调函数

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !CCLayer::init() )
    {
        return false;
    }

    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
    CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();
    CCSize winSize = CCDirector::sharedDirector()->getWinSize(); 

    auto *png1=CCSprite::create("1.png");
    png1->setPosition(ccp(0,120));
    addChild(png1);

    CCFiniteTimeAction *action = CCSequence::create(
        CCMoveBy::create(2.0f, CCPointMake(winSize.width / 2, 0)),
        CCCallFunc::create(this, callfunc_selector(HelloWorld::actionCallback)), NULL); 

    CCFiniteTimeAction *actionN = CCSequence::create(
        CCMoveBy::create(2.0f, CCPointMake(winSize.width / 2, 0)),
        CCCallFuncN::create(this, callfuncN_selector(HelloWorld::actionCallbackN)), NULL); 

    CCFiniteTimeAction *actionND = CCSequence::create(
        CCMoveBy::create(2.0f, CCPointMake(winSize.width / 2, 0)),
        CCCallFuncND::create(this, callfuncND_selector(HelloWorld::actionCallbackND), (void *) "Callback Data"), NULL); 

    png1->runAction(action);
    //png1->runAction(actionN);
    //png1->runAction(actionND); 

    return true;
}

void HelloWorld::actionCallback()
{
    CCSize winSize = CCDirector::sharedDirector()->getWinSize();
    CCLabelTTF *label = CCLabelTTF::create("Action Callback!", "Marker Felt", 32);
    label->setPosition(ccp(winSize.width / 2, winSize.height / 2));
    this->addChild(label);
}

void HelloWorld::actionCallbackN(CCNode *pSender)
{
    CCSprite *sprite = (CCSprite *) pSender; 

    // 回调变红色
    sprite->setColor(ccRED);
} 

void HelloWorld::actionCallbackND(CCNode *pSender, void *data)
{
    CCSize winSize = CCDirector::sharedDirector()->getWinSize();
    CCSprite *sprite = (CCSprite *) pSender; 

    // 回调变蓝色
    sprite->setColor(ccBLUE); 

    // 接收回调数据
    CCLabelTTF *label = CCLabelTTF::create((char *) data, "Marker Felt", 32);
    label->setPosition(ccp(winSize.width / 2, winSize.height / 2));
    this->addChild(label); 

    CCLog((char *) data);
}