正在播放多个声音时音效中途停止？

问题描述：

我有一个8秒长的充电声音效果，只有在游戏中的每个关卡结束时才会触发。正在播放多个声音时音效中途停止？

问题是，当有其他声音同时播放（激光，爆炸等）时，声音效果在中途停止。我在其他地方阅读时可以同时播放多达32个同时播放的声音，但该游戏最多可同时播放7个或8个音效。但充电效果依然不佳。

如果我没有在游戏中进行任何拍摄，并让充电效果起作用，它会一直播放。

我预载我的声音在启动时就像这样：

-(void)setupSound 
{ 
    [[SimpleAudioEngine sharedEngine] playBackgroundMusic:@"Kickshock.mp3" loop:YES]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"explosion_large.caf"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"explosion_small.caf"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"laser_ship.caf"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"powerup.mp3"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"railgun.mp3"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"metal.mp3"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"count.mp3"]; 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"charge_up.mp3"]; 
} 

-(id)init 
{ 
    if((self = [super init])) 
    { 
     [self setupSound]; 
     // Rest of other code.. 
    } 
    return self; 
}

，我发挥他们在需要时（拍摄激光，水平的结束，东西爆炸等）：

[[SimpleAudioEngine sharedEngine] playEffect:@"charge_up.mp3" pitch:1.0 pan:0.0 gain:0.4];

我guess猜测充电声音正在失去其“槽”，因为其他声音正在播放？如上所述，当充电音效切断时，我最多只能同时播放7或8个声音。

如果我的声音正在失去其“插槽”，是否有一种方法可以锁定特定的声音效果，使其不会丢失其“插槽”？

任何想法，我做错了什么，或者我可以做些什么来弥补这一点？任何帮助是极大的赞赏！：D感谢您的期待。

答

要播放多个声音，我会使用CDAudioManager与CDSoundEngine而不是SimpleAudioEngine。

CDSoundEngine允许多个通道（最多32个），可以同时播放声音。

例子：

// create engine 
CDSoundEngine * engine = [CDAudioManager sharedManager].soundEngine; 

// assign groups 
NSArray * groups = [NSArray arrayWithObjects: 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], 
    [NSNumber numberWithInt:1], nil]; 

[engine defineSourceGroups:groups]; 
[CDAudioManager initAsynchronously:kAMM_FxPlusMusicIfNoOtherAudio]; 

// load requests 
NSMutableArray * requests = [[[NSMutableArray alloc] init] autorelease]; 

NSString * plist_sounds = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:@"Sounds.plist"]]; 
if (![[NSFileManager defaultManager] fileExistsAtPath:plist_sounds]) { 
    plist_sounds = [[NSBundle mainBundle] pathForResource:@"Sounds" ofType:@"plist"]; 
} 
NSDictionary * dictionary_sounds = [[NSDictionary dictionaryWithContentsOfFile:plist_sounds] objectForKey:@"Sounds"]; 
if (dictionary_sounds != nil) { 
    for (id key in dictionary_sounds) { 
     [requests addObject:[[[CDBufferLoadRequest alloc] init:[key intValue] filePath:[dictionary_sounds objectForKey:key]] autorelease]]; 
    } 
} 

[engine loadBuffersAsynchronously:requests];

然后播放声音：

- (ALuint)play:(NSInteger)sound group:(NSInteger)group loop:(BOOL)forever volume:(float)volume { 
    [[CDAudioManager sharedManager].soundEngine playSound:sound sourceGroupId:group pitch:1.0f pan:0.0f gain:volume loop:forever]; 
}

答

好我是从看教程后想通了：

http://bobueland.com/cocos2d/?p=200

我没有意识到SimpleAudioEngine是为短的声音效果。

对于那些你被卡住在这一点上谁，这里就是我所做的：

在接口：

CDLongAudioSource *rightChannel;

在我的init或setupSound方法：

rightChannel = [[CDAudioManager sharedManager] audioSourceForChannel:kASC_Right]; 
[rightChannel load:@"charge_up.mp3"];

而且当我想玩的时候：

[rightChannel play];

我相信这只会在你只有一个长音效时才起作用。如果你有多个长音效果，我相信你必须以不同的方式处理它。除非我只是创建更多的CDLongAudioSource实例？有没有人有任何链接/教程？谢谢！

答

对不起，我简单的英文...
简单的发动机必须在瞬间最多32个音频通道

if(SoundId == 0) 
{ 
    // when you say playEffect engine capture one channel for effect 
    // do playEffect once and save result SoundID for Stop or Resume effect 
    SoundId = SimpleAudioEngine::sharedEngine()->playEffect("audio.mp3"); 
} 
// effect loaded, channel captured, say resume for play effect again, nothing more 
else 
{ 
    SimpleAudioEngine::sharedEngine()->resumeEffect(SoundId); 
} 

// if you say effect nothing will happen with channel try 
SimpleAudioEngine::sharedEngine()->stopEffect(SoundID);

在这种情况下，第一个效果的频道不会是换成新的效果，如果运行次数多于32

正在播放多个声音时音效中途停止？

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