cocos2dx 音乐与音效

//根据不同的平台使用的预编译索引不同音频文件
#if   (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
#define EFFECT_FILE   "effect2.ogg"
#elif (CC_TARCET_PLATFORM == CC_PLATFORM_MARMALADE)
#define EFFECT_FILE   "effect1.raw"
#else
#define EFFECT_FILE   "effect1.wav"
#endif

#if (CC_TARGET_PLATEFOM == CC_PLATFORM_WIN32)
#define  MUSIC_FILE   "music.mid"
#elif (CC_TARGET_PLATFORM == CC_PLATFORM_BLACKBERRY)
#define MUSIC_FILE    "background.ogg"
#else
#define MUSIC_FILE    "background.mp3"
#endif

std::string items[]={
"播放背景音乐","停止背景音乐","暂停背景音乐","继续播放背景音乐","后退背景音乐", "背景音乐是否播放", "播放音效","重复播放音效","停止音效播放" ,"释放音效" ,"增加背景音乐音量", "减少背景音效音量","增加音效音量","减少音效音量","暂停音效","继续播放音效","暂停所有音效","继续所有音效","停止所有音效"
};

CCScene* HelloWorld::scene()
{
// 'scene' is an autorelease object
CCScene *scene = CCScene::create();

// 'layer' is an autorelease object
HelloWorld *layer = HelloWorld::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 HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !CCLayer::init() )
{
return false;
}

//
CCMenu * m_pItmeMenu = CCMenu::create();
CCSize size = CCDirector::sharedDirector()->getWinSize();
int m_nTestCount = sizeof(items)/sizeof(items[0]);

for (int i = 0 ; i <m_nTestCount; i++) {
CCLabelTTF * label = CCLabelTTF::create(items[i].c_str(), "", 20);
CCMenuItemLabel * pMenuItem = CCMenuItemLabel::create(label , this, menu_selector(HelloWorld::menuBack));
m_pItmeMenu->addChild(pMenuItem,i);
pMenuItem->setPosition(CCPointMake(0 , (size.height*0.5-20-(i+1)*15)));
}
addChild(m_pItmeMenu,0 ,100);

//    预加载音乐和音效
SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE));
SimpleAudioEngine::sharedEngine()->preloadEffect(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(EFFECT_FILE));

//    设置默认音量
SimpleAudioEngine::sharedEngine()->setEffectsVolume(0.5);
SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(0.5);

return true;
}

void HelloWorld:: menuBack(CCObject * pSender)
{
CCMenuItem * pMenuItem = (CCMenuItem * )(pSender);
int nIdx = pMenuItem->getZOrder();
switch (nIdx) {
case 0:
//             播放背景音乐
SimpleAudioEngine::sharedEngine()->playBackgroundMusic(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE)).c_str(), true);
break;
case 1:
//             停止背景音乐
SimpleAudioEngine::sharedEngine()->stopBackgroundMusic();
break;
case 2:
//              暂停背景音乐
SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();
break;
case 3:
//             继续播放背景音乐
SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();
break;
case 4:
//             后退背景音乐
SimpleAudioEngine::sharedEngine()->rewindBackgroundMusic();
break;
case 5:
//              背景音乐是否正在播放
if (SimpleAudioEngine::sharedEngine()->isBackgroundMusicPlaying()) {
CCLOG("正在播放");
}else
CCLOG("没在播放");
break;
case 6:
//             播放音效，并且得到此音效的ID
SimpleAudioEngine::sharedEngine()->playEffect(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE)).c_str());
break;
case 7:
//             重复播放音效
SimpleAudioEngine::sharedEngine()->playEffect(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE)).c_str(), true);
break;
case 8:
//            停止播放音效
SimpleAudioEngine::sharedEngine()->stopEffect(effectId);
break;
case 9:
//            释放音效
SimpleAudioEngine::sharedEngine()->unloadEffect (std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE)).c_str() );
break;
case 10:
//            增加背景音乐音量
SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume()+0.1f);
break;
case 11:
//             减少背景音乐音量
SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume()-0.1f);
break;
case 12:
//            增加背景音效音量
SimpleAudioEngine::sharedEngine()->setEffectsVolume(SimpleAudioEngine::sharedEngine()->getEffectsVolume()+0.1f);
break;
case 13:
//            减少背景音效音量
SimpleAudioEngine::sharedEngine()->setEffectsVolume(SimpleAudioEngine::sharedEngine()->getEffectsVolume()-0.1f);
break;
case 14:
//             暂停音效
SimpleAudioEngine::sharedEngine()->pauseEffect(effectId);
break;
case 15:
//            继续 播放音效
SimpleAudioEngine::sharedEngine()->resumeEffect(effectId);
break;
case 16:
//            暂停所有音效
SimpleAudioEngine::sharedEngine()->pauseAllEffects();
break;
case 17:
//             继续所有音效
SimpleAudioEngine::sharedEngine()->resumeAllEffects();
break;
case 18:
//            停止所有音效
SimpleAudioEngine::sharedEngine()->stopAllEffects();
break;

default:
break;
}

}