cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   dnsolo
   Member

   I need to pause a 'sound effect' and was wondering if CocoDenshion provides this functionality.

   Something like the following would be ideal...

   [[SimpleAudioEngine sharedEngine] pauseEffect:@"mySoundEffect.mp3"];

   The scenario I'm having to deal with in my game is below:

   A music track is playing in the background
   A 60 second long sound effect is also playing
   The user then pauses the game.
   At this point I need to pause both the music and the sound effect tracks.

   I cannot simply stop the sound effect track and then restart it when the user resumes the
   game because my main game loop needs to keep track of how much of the sound effect track
   has been played (so I can play additional sound effects that are triggered later on).

   Posted 2 years ago #
2. 

   Steve Oldmeadow
   Administrator

   OpenAL does not provide a method to pause and resume sounds (sources in OpenAL speak) and therefore CocosDesnhion can't offer this for sound effects. Probably the easiest thing would be to use an AVAudioPlayer for your long sound, CDAudioManager uses one for the background music and they are extremely easy to use.

   Posted 2 years ago #
3. 

   dnsolo
   Member

   Hi Steve,

   Thanks for your help.

   I used the code below which works fine:

   'NSString *path = [[NSBundle mainBundle] pathForResource:@"mySoundEffect" ofType:@"mp3"];
   NSURL* url = [NSURL fileURLWithPath:path];
   mySoundEffect = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
   mySoundEffect.volume = 1.0f;
   [mySoundEffect prepareToPlay];
   [mySoundEffect play];'

   One thing that caught me out though was the missing 'resume' method in the 'AVAudioPlayer' class. I didn't realise that you have to call 'play' again to resume any previously paused track when using this class. That's all fixed now though, thanks again.

   Posted 2 years ago #
4. 

   marioaae
   Member

   Hey dnsolo, could you please write the whole code snippet to pause a sound effect? Thanks!

   Posted 8 months ago #
5. 

   embraceware
   Member

   Hey Guys,

   I know this thread is old but here is my solution...

   I added the following to CocosDenshion.m to pause and resume sounds:

   - (void)pauseSound:(ALuint) sourceId {
   if (!functioning_) {
   return;
   }

   alSourcePause(sourceId);
   alGetError();
   }

   - (void)resumeSound:(ALuint) sourceId {
   if (!functioning_) {
   return;
   }

   alSourcePlay(sourceId);
   alGetError();
   }

   "alSourcePause" pauses the sound as you would expect and "alSourcePlay" will "resume" if you issue the command on a sound which is paused. If the sound was not paused "alSourcePlay" will play the sound from the start.

   Posted 6 months ago #

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