cocos2d 播放音乐

// 在init这个函数当中做一些初始化的事情
bool HelloWorld::init()
{
    //////////////////////////////
    // 先构造父级对象
    if ( !CCLayer::init() )
    {
        return false;
    }

    CCSize size=CCDirector::sharedDirector()->getWinSize(); 
    CCMenuItemFont* item=CCMenuItemFont::create("click me",this,menu_selector(HelloWorld::menuCallback));
    item->setPosition(ccp(size.width/2,size.height/2));
    CCMenu* menu=CCMenu::create(item,NULL);
    menu->setPosition(CCPointZero);
    addChild(menu);

    SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic("background.mp3");
    //SimpleAudioEngine::sharedEngine()->preloadEffect();


    return true;
}




void HelloWorld::menuCallback(CCObject* pSender)
{
    SimpleAudioEngine::sharedEngine()->playBackgroundMusic("background.mp3");
}