cocos2d-x 观察者设计模式

1、参考文章  http://blog.csdn.net/vanquishedzxl/article/details/23616535

class HelloWorld : public cocos2d::CCLayer
{
public:
    virtual bool init();
    static cocos2d::CCScene* scene();
    void  sengMsg(CCObject *pSender);
    void testMSG(CCObject *pSender);
    CREATE_FUNC(HelloWorld);
};

bool HelloWorld::init()
{
    bool bRet = false;
    do
    {
        //////////////////////////////////////////////////////////////////////////
        // super init first
        //////////////////////////////////////////////////////////////////////////

        CC_BREAK_IF(! CCLayer::init());
        CCNotificationCenter::sharedNotificationCenter()->addObserver(this,callfuncO_selector(HelloWorld::testMSG),"test",NULL);
        CCMenuItemLabel *labelItem = CCMenuItemLabel::create(CCLabelTTF::create("Send MSG","Arial",26),this,menu_selector(HelloWorld::sengMsg));
        CCMenu *menu = CCMenu::create(labelItem,NULL);
        this->addChild(menu);
        bRet = true;
    } while (0);

    return bRet;
}
void HelloWorld::sengMsg(CCObject *pSender)
{
    CCLOG("sendMSG");
    CCNotificationCenter::sharedNotificationCenter()->postNotification("test",NULL);
}
void HelloWorld::testMSG(CCObject *pSender)
{
    CCLOG("testMSG");
}

--实际用法demo

#define EventManager NotificationCenter::getInstance()

void PlayScene::init_listen(){
EventManager->addObserver(this, CC_CALLFUNCO_SELECTOR(PlayScene::handler_refresh_hand_card), GameEvent::handler_refresh_hand_card, NULL);
EventManager->addObserver(this, CC_CALLFUNCO_SELECTOR(PlayScene::handler_refresh_all_card), GameEvent::handler_refresh_all_card, NULL);
}

EventManager->postNotification(GameEvent::on_msg, sm);

EventManager->removeAllObservers(this);