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[Sigma]

Hi guys,
     in the try catch block the _bgMusicSc is not getting the sound channel properly, it is throwing null reference bug, not in all the machines, only in some machines; any one have any idea?
      i checked out flash documentation, it says that if sound driver has some issues or if num of channels exceed 30, calling a sound with play will not return a channel instead it will return null. but after returning null the game is crashed. plz help!!!!!!
here is the code:

public function chooseBgMusic()
      {
         stopBackground();
         _bgMusic = null;
         switch(_currentLevel%3)
         {
            case 0:
               _bgMusic = new inGame1();
               Main._currentlyPlaying = 0;
            break;
            case 1:
               Main._currentlyPlaying = 1;
               _bgMusic = new inGame2();
            break;
            case 2:
               Main._currentlyPlaying = 2;
               _bgMusic = new inGame3();
            break;
         }
         playBackground();
      }
public function stopBackground()
      {
         if (_isBgMusicPlaying && _bgMusicSC != null)
         {
            _bgMusicSC.removeEventListener(Event.SOUND_COMPLETE, shuffleMusic);
            _isBgMusicPlaying = false;
            _bgMusicSC.stop();
         }
      }
public function playBackground():void
      {
          if (!_mute && _bgMusicSC != null && !_isBgMusicPlaying)
         {
            _isBgMusicPlaying = true;
            try
            {
               _bgMusicSC = _bgMusic.play(0, 1);
            }
            catch (e:Error)
            {
               trace("Caught error " + e.toString() + " while loading sound ");
            }
              
            _soundTransform.volume = _bgVolume / 100;
            _bgMusicSC.soundTransform = _soundTransform;
            if (_bgMusicSC.hasEventListener(Event.SOUND_COMPLETE))
            {
               _bgMusicSC.removeEventListener(Event.SOUND_COMPLETE, shuffleMusic);
            }
               
            _bgMusicSC.addEventListener(Event.SOUND_COMPLETE, shuffleMusic);
          }
      }


Thanks in Advance....

  

[Sos]

What is it? IT!

[J. Kyle Pittman]

            try
            {
               _bgMusicSC = _bgMusic.play(0, 1); // This might return null...
            }
            catch (e:Error)
            {
               trace("Caught error " + e.toString() + " while loading sound ");
            }
             
            _soundTransform.volume = _bgVolume / 100;
            _bgMusicSC.soundTransform = _soundTransform; // ...but it gets dereferenced anyway

Can't say for sure whether that's the problem, but it looks like it could be.  If you move the remainder of that function inside the try block, does that fix it?

[Sigma]

I moved the code inside the try. The actual problem is not in the machine where the project is compiled. problems are in other machines while running swf. First thing is as such the try block is not giving any message at runtime, but if i use some softwares to trace the swf running in other machines, the code halts at that point exactly(try block), it is not moving beyond that point.Further the machines having this problem have sound drivers corrupted, so is there any way sound channel related with sound drivers, if so is there any way to avoid this bug? i checked out this by uninstalled my sound driver i got the same bug - null point reference. is this problem weird or its normal in as3 games.