HowTo: play a sound effect once with new AudioSystem

Troubleshooting sound
1

I have been experimenting with particles and such now couple days. Yesterday evening I decided to add some booms to my app but I could not get sound out. Example in test worked ok but my attempt to play a sound effect once was dead silent.



The problem turned out to be that I had to set volume for the AudioTrack. I guess the volume in AudioPlayer is not set otherwise.



Here is a simple example, modified from TestJmexAudio.


protected void simpleUpdate() {
   audio.update();
   if (timeToBoom && !sfx.isPlaying()) {
      sfx.setWorldPosition(boomPos);
      sfx.setEnabled(true);
      sfx.setVolume(1f);
      sfx.play();
   }
   // should I  also add sfx.stop() ???
}

protected void simpleInitGame() {
   audio = AudioSystem.getSystem();
   audio.getEar().trackOrientation(cam);
   audio.getEar().trackPosition(cam);
      
   sfx = getSFX(Kaboom.class.getResource("firework_3.wav"), false);
      
}

private AudioTrack getSFX(URL resource, boolean loop) {
   AudioTrack sound = AudioSystem.getSystem().createAudioTrack(resource, false);
   sound.setType(TrackType.POSITIONAL);
   sound.setRelative(false);
   sound.setLooping(loop);
   return sound;
}