cocos2d-x 观察者设计模式

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

1. class HelloWorld : public cocos2d::CCLayer
2. {
3. public:
4. virtual bool init();
5. static cocos2d::CCScene* scene();
6. void  sengMsg(CCObject *pSender);
7. void testMSG(CCObject *pSender);
8. CREATE_FUNC(HelloWorld);
9. };

1. bool HelloWorld::init()
2. {
3. bool bRet = false;
4. do
5. {
6. //////////////////////////////////////////////////////////////////////////
7. // super init first
8. //////////////////////////////////////////////////////////////////////////
9. CC_BREAK_IF(! CCLayer::init());
10. CCNotificationCenter::sharedNotificationCenter()->addObserver(this,callfuncO_selector(HelloWorld::testMSG),"test",NULL);
11. CCMenuItemLabel *labelItem = CCMenuItemLabel::create(CCLabelTTF::create("Send MSG","Arial",26),this,menu_selector(HelloWorld::sengMsg));
12. CCMenu *menu = CCMenu::create(labelItem,NULL);
13. this->addChild(menu);
14. bRet = true;
15. } while (0);
16. return bRet;
17. }
18. void HelloWorld::sengMsg(CCObject *pSender)
19. {
20. CCLOG("sendMSG");
21. CCNotificationCenter::sharedNotificationCenter()->postNotification("test",NULL);
22. }
23. void HelloWorld::testMSG(CCObject *pSender)
24. {
25. CCLOG("testMSG");
26. }

--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);