cocos2d-x 3.0学习笔记（一）播放背景音乐和音效

1.首先在h头文件中添加引用：

#include "SimpleAudioEngine.h"

2.在init return之前，添加播放背景音乐的代码：

CocosDenshion::SimpleAudioEngine::getInstance()->playBackgroundMusic("sd.mp3",true);//第二个参数就是是否循环播放
CocosDenshion::SimpleAudioEngine::getInstance()->stopBackgroundMusic(true);//停止背景音乐，可以代一个布尔型参数，表示是否释放音乐文件
CocosDenshion::SimpleAudioEngine::getInstance()->pauseBackgroundMusic();//暂停背景音乐
CocosDenshion::SimpleAudioEngine::getInstance()->resumeBackgroundMusic();//继续背景音乐
CocosDenshion::SimpleAudioEngine::getInstance()->rewindBackgroundMusic();//重头调用背景音乐
CocosDenshion::SimpleAudioEngine::getInstance()->isBackgroundMusicPlaying();//返回布尔型参数，是否在放着背景音乐
CocosDenshion::SimpleAudioEngine::getInstance()->setBackgroundMusicVolume(0.1);//设置音量0.0-1.0

3.在ccTouchesEnded方法内，添加播放音效的代码：

int soundid = CocosDenshion::SimpleAudioEngine::getInstance()->playEffect("hit.wav");//和背景音乐一样，第二个参数是可选的，如果是true就是循环播放，否则就是只播一次
CocosDenshion::SimpleAudioEngine::getInstance()->stopEffect(soundid);//停止音效，可以选择单独停掉一个音效，通过创建时的soundid停止

CocosDenshion::SimpleAudioEngine::getInstance()->stopAllEffects();//停止全部音效
CocosDenshion::SimpleAudioEngine::getInstance()->pauseEffect(soundid);//暂停单个音效
CocosDenshion::SimpleAudioEngine::getInstance()->resumeEffect(soundid);//重新开始音效
CocosDenshion::SimpleAudioEngine::getInstance()->pauseAllEffects();//暂停全部音效
CocosDenshion::SimpleAudioEngine::getInstance()->resumeAllEffects();//重新开始全部音效
CocosDenshion::SimpleAudioEngine::getInstance()->setEffectsVolume(0.5);//设置音效音量
CocosDenshion::SimpleAudioEngine::getInstance()->unloadEffect("hit.wav");//卸载音效