Cocos2dx替换场景错误

场景我有主场景，单击此按钮我想打开另一个场景。但我得到了以下错误：对'OyunMenu:：scene（）的未定义引用

主菜单.h

 #ifndef MAINMENU_H_
#define MAINMENU_H_
#include "cocos2d.h"
    class MainMenu : public cocos2d::CCLayer
    {
    public:
virtual bool init();

static cocos2d::CCScene* scene();
virtual void registerWithTouchDispatcher(void);
virtual void ccTouchesBegan(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
virtual void ccTouchesMoved(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
virtual void ccTouchesEnded(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
virtual void ccTouchesCancelled(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
void menuCloseCallback(CCObject* pSender);
CREATE_FUNC(MainMenu);

};

#endif 

主菜单.cpp

#include "MainMenu.h"
#include "SimpleAudioEngine.h"
#include "Constants.h"
#include "OyunMenu.h"
#define COCOS2D_DEBUG 1
using namespace std;
USING_NS_CC;
 CCScene* MainMenu::scene()
{
// 'scene' is an autorelease object
CCScene *scene = CCScene::create();
// 'layer' is an autorelease object
MainMenu *layer = MainMenu::create();
// add layer as a child to scene
scene->addChild(layer);
// return the scene
return scene;
 }

bool MainMenu::init()
{
//////////////////////////////
// 1. super init first
if ( !CCLayer::init() )
{
    return false;
}   

this->setTouchEnabled(true);
CCSprite* oyuncuBul = CCSprite::create("oyuna-basla.png");
oyuncuBul->setPosition(ccp(150,260));
oyuncuBul->setTag(menuOyuncuBul);
this->addChild(oyuncuBul, 0); 
}
    void MainMenu::ccTouchesBegan(cocos2d::CCSet* touches, cocos2d::CCEvent* event)
    {
CCTouch *touch = (CCTouch*) (touches->anyObject());
CCPoint point = touch->getLocationInView();
point = CCDirector::sharedDirector()->convertToGL(point);
CCSprite *oyuncuBul=(CCSprite *)this->getChildByTag(menuOyuncuBul);
CCRect rectOyuncuBul = oyuncuBul->boundingBox();
if(rectOyuncuBul.containsPoint(point)){
    CCDirector::sharedDirector()->replaceScene(OyunMenu::scene());          
}

OyunMenu.h

#ifndef OYUNMENU_H_
#define OYUNMENU_H_
#include "cocos2d.h"
class OyunMenu : public cocos2d::CCLayer
{
 public:
virtual bool init();

static cocos2d::CCScene* scene();
virtual void registerWithTouchDispatcher(void);
virtual void ccTouchesBegan(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
virtual void ccTouchesMoved(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
virtual void ccTouchesEnded(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
virtual void ccTouchesCancelled(cocos2d::CCSet* touches, cocos2d::CCEvent* event);
void menuCloseCallback(CCObject* pSender);
CREATE_FUNC(OyunMenu);

};

#endif 

OyunMenu.cpp

#include "OyunMenu.h"
#include "SimpleAudioEngine.h"
#include "Constants.h"
#define COCOS2D_DEBUG 1
using namespace std;
USING_NS_CC;
CCScene* OyunMenu::scene()
{
// 'scene' is an autorelease object
CCScene *scene = CCScene::create();
// 'layer' is an autorelease object
OyunMenu *layer = OyunMenu::create();
// add layer as a child to scene
scene->addChild(layer);
// return the scene
return scene;
}

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