Cocos2D-x背景音乐和音效的统制方法
第一步：预加载背景音乐和音效
// 预加载背景音乐和音效：相对路径 .mid .wav 和 .mp3等格式文件
SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic( CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE) );
SimpleAudioEngine::sharedEngine()->preloadEffect( CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(EFFECT_FILE) );
第二步：控制声音
1、背景音乐控制方法：
//播放背景音乐
//MUSIC_FILE就是音乐文件相对Resources文件夹的相对路径下的文件名，然后再转换为绝对路径，第二个参数就是是否循环播放
SimpleAudioEngine::sharedEngine()->playBackgroundMusic(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(MUSIC_FILE)).c_str(), true);
//停止背景音乐播放
SimpleAudioEngine::sharedEngine()->stopBackgroundMusic();
//暂停背景音乐播放
SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();
//继续背景音乐播放
SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();
//重新播放背景音乐
SimpleAudioEngine::sharedEngine()->rewindBackgroundMusic();
//背景音乐是否正在播放
SimpleAudioEngine::sharedEngine()->isBackgroundMusicPlaying()
//增大背景音乐音量
SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume() + 0.1f);
//减小背景音乐音量
SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume() - 0.1f);
2、音效控制方法：
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//播放音效1 m_nSoundId = SimpleAudioEngine::sharedEngine()->playEffect(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(EFFECT_FILE)).c_str());
//播放音效2 m_nSoundId = SimpleAudioEngine::sharedEngine()->playEffect(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(EFFECT_FILE)).c_str(), true);
//停止播放音效(注意：如果没有播放，你就别停止,因为播都没播放，其他处理也一样...) SimpleAudioEngine::sharedEngine()->stopEffect(m_nSoundId);
//暂停音效播放 SimpleAudioEngine::sharedEngine()->pauseEffect(m_nSoundId);
//继续音效播放 SimpleAudioEngine::sharedEngine()->resumeEffect(m_nSoundId);
//暂停所有音效 SimpleAudioEngine::sharedEngine()->pauseAllEffects();
//继续所有音效 SimpleAudioEngine::sharedEngine()->resumeAllEffects();
//停止所有音效 SimpleAudioEngine::sharedEngine()->stopAllEffects();
//卸载音效 SimpleAudioEngine::sharedEngine()->unloadEffect(std::string(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(EFFECT_FILE)).c_str());
//增大音效音量 SimpleAudioEngine::sharedEngine()->setEffectsVolume(SimpleAudioEngine::sharedEngine()->getEffectsVolume() + 0.1f);
//减小音效音量 SimpleAudioEngine::sharedEngine()->setEffectsVolume(SimpleAudioEngine::sharedEngine()->getEffectsVolume() - 0.1f);
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第三步：释放声音
SimpleAudioEngine::sharedEngine()->end();