由于simpleAudioEngine在播放音效时无法获取状态也无法在播放完成后回调，造成音效在按键频繁时发声重叠。改mac版本的库对目前的我来说挑战难度太大。
于是百度了半天，发现3.6版本的cocos2dx有了新的声音播放库AudioEngine。于是体验下，感觉还不错：
直接贴代码：
头文件：
#ifndef __macstudycocos2dx__newAudioEngineTest__
#define __macstudycocos2dx__newAudioEngineTest__
#include <stdio.h>
#include "cocos2d.h"
#include "audio/include/AudioEngine.h"
USING_NS_CC;
using namespace experimental;
@H_404_49@class newAudioEngineTest:@H_404_49@publicLayer,@H_404_49@publicAudioEngine{
public:
@H_404_49@staticcocos2d::Scene* createScene();
@H_404_49@virtual@H_404_49@bool init();
// a selector callback
@H_404_49@void playCallback(cocos2d::Ref* pSender);//点击按钮后开始播放的回调函数
CREATE_FUNC(newAudioEngineTest);
@H_404_49@bool isplaying=@H_404_49@false;//标记播放状态
@H_404_49@void changer_playingstatus();//播放完成后的回调函数，用来更改播放状态
};
newAudioEngineTest.cpp如下：
#include "newAudioEngineTest.h"
Scene* newAudioEngineTest::createScene()
{
@H_502_153@ // 'scene' is an autorelease object@H_404_49@auto scene =Scene::create();
@H_502_153@ // 'layer' is an autorelease object
@H_404_49@auto layer =newAudioEngineTest::create();
@H_502_153@ // add layer as a child to scene
scene->addChild(layer);
@H_502_153@ // return the scene
@H_404_49@return scene;
}
@H_404_49@bool newAudioEngineTest::init()
{
@H_502_153@ ////////////////////////////// @H_502_153@ // 1. super init first@H_404_49@if ( !Layer::init() )
{
return false;
}
Size visibleSize =Director::getInstance()->getVisibleSize();
Vec2 origin =Director::getInstance()->getVisibleOrigin();
@H_404_49@auto menuitem=MenuItemFont::create("play wav",CC_CALLBACK_1(newAudioEngineTest::playCallback,@H_404_49@this));
menuitem->setPosition(Vec2(0,0));
@H_502_153@ // create menu,it's an autorelease object
@H_404_49@auto menu =Menu::create(menuitem,@H_404_49@NULL);
menu->setPosition(Vec2(visibleSize.width/2,visibleSize.height/2));
@H_404_49@this->addChild(menu,1);
return true;
}
@H_404_49@voidnewAudioEngineTest::playCallback(Ref* pSender)
{
@H_404_49@if (!isplaying) {
log("wav is not playing!");
isplaying=@H_404_49@true;
@H_404_49@int audioID=play2d("man1.wav");//播放音效文件
setFinishCallback(audioID,CC_CALLBACK_0(newAudioEngineTest::changer_playingstatus,0); font-size:11px"> //音效播放完成后修改播放状态，此时会用到audioID
}
@H_404_49@else{
log("wav is playing,this click is not response!");
}
}
@H_404_49@voidnewAudioEngineTest::changer_playingstatus(){
isplaying=@H_404_49@false;
log("finished,status has been change");
}
以下是log输出：（可以看出audioID是改变的，即使播放同一个音效）
2015-06-23 15:24:35.303 macstudycocos2dx iOS[17888:662515] cocos2d: surface size: 1024x768
wav is not playing!
audioID =0
finished,status has been change
wav is not playing!
audioID =1
finished,status has been change
wav is not playing!
audioID =2
finished,status has been change
wav is not playing!
audioID =3
finished,status has been change
wav is not playing!
audioID =4
wav is playing,this click is not response! //快速点击时
finished,status has been change
wav is not playing!
audioID =5
wav is playing,this click is not response! //快速点击时
wav is playing,this click is not response! //快速点击时
finished,status has been change
wav is not playing!
audioID =6
wav is playing,this click is not response!
wav is playing,this click is not response!
finished,status has been change
wav is not playing!
audioID =7
wav is playing,status has been change
起初觉得如果音效可以使用AudioEngine来做，记住要用caf和wav格式。背景音乐可以使用simpleAudioEngine来播放，毕竟simpleAudioEngine有缓存机制。
更正下，之所以标红，是今天发现如果同时使用AudioEngine和simpleAudioEngine时会导致音效无法播放，具体原因不清楚。看来只能使用AudioEngine了。
AudioEngine中没有了playbackgoudmuisc的方法，背景音乐通过play2d来播放，通过AudioID可以对背景音乐的播放进行控制，用起来也很方便。
而且，今天发现AudioEngine能播放mp3格式的音乐文件，对于被wav撑得硕大的app来说使用mp3格式无疑是个完美的解决方案，真机的调试效果也是相当满意。
（未完待续）
如果不继承类时可以使用以下方式来播放哦：
@H_404_49@int audioID=experimental::AudioEngine::play2d(wavfilestring->getCString());
