cocos2d for iPhone

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

1. 

   pabloruiz55
   Member

   Hi! A few days ago i noticed this in my game:

   After a receiving a call, under any circumstance when returning to the game, background music (from GBMusicTrack) and sound effect (from cocosDenshion) won't play anymore. Even if i return to main menu and start again (i am initializing sound in my gameScene on init) sounds will be gone...

   Am i missing something?

   A few things:

   -It happens if the director is paused or not.
   -It only happens with incoming calls, if i am playing and lock the screen the sound remains ok
   -I am using an old version of cocosDenshion, but i don't think it has to do with it because the background music is played using the GBMusictrack library and it also mutes...

   Posted 2 years ago #
2. 

   ob1
   Member

   Do you Pause/resume the music when in call ?

   Is so, try replacing with stop/resume.

   Posted 2 years ago #
3. 

   pabloruiz55
   Member

   The thing is i don't know how to access my gamelayer's instance variable from the appdelegate...

   or should i make the soundmanager an instance variable of the appdelegate and then access it from my game like:(AppDelegate *) [[UIApplication sharedApplication] delegate].song?

   Posted 2 years ago #
4. 

   Steve Oldmeadow
   Administrator

   What firmware are you using? The OS should take care of this for you but it is broken in the 3.0 beta.

   Why don't you just create a static instance of your sound manager - just copy the code from Director. Then you can do something like [[SoundManager sharedManager].song] any where.

   Posted 2 years ago #
5. 

   Steve Oldmeadow
   Administrator

   Pablo, my understanding is if you accept the call your app is terminated then restared after the call, so I'm not sure why you are mentioning Director being paused or not. However, if you decline the incoming call that generates an audio session interruption.

   CDSoundEngine will handle this for you automatically if you call the init where you pass an audio session category. However, because you are also using GBMusicTrack you probably don't want to do this as you need to handle audio session interruption for that too. I don't know much about GBMusicTrack but my understanding is it is using audio queues so you need to check Apple's audio session guidelines on how to handle audio session interruption when using audio queues.

   Posted 2 years ago #
6. 

   pabloruiz55
   Member

   Hi Steve, i am using 3.0.
   What bothers me is that if i lock the screen the applicationWillResignActive is called (if i am not mistaken) and when i unlock it the applicationDidBecomeActive is called. In this case sounds return ok, there isn't any problem...

   Isn't it the same for the app to become active again after a call or after an screen lock?

   I will try what you wrote about creating an static instance.

   I tried making the sound manager an instance variable of the appdelegate but i noticed many slowdowns when playing the sounds like that, could that be posible?

   Posted 2 years ago #
7. 

   pabloruiz55
   Member

   well i solved the problem, for the sound effects, i was not supplying a session category, now that i am it works properly.

   For the background music i couldn't get GBMusicTrack to work fine, so i switched to CDAudioManager which works great without changing anything ;) And it makes it easier to play,pause,stop,rewind the song.

   Thank you very much :)

   Posted 2 years ago #

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