public AudioCue GetCue(string name, GameThing thing)
{
AudioCue cue;
if (spareCues.Count > 0)
{
// Reuse a spare AudioCue instance
cue = spareCues[0];
spareCues.RemoveAt(0);
}
else
{
// No spare AudioCue instances available, so create a new one
cue = new AudioCue();
}
/// Ugly hack to disable 3d for non-positional sounds.
/// Later we'll know whether a given sound is non-positional by examining its tag set.
if (name.StartsWith("Mystery") || name.StartsWith("Driving") || name.StartsWith("Dramatic"))
{
thing = null;
}
// Initialize the sound cue
cue.Set(SoundBank.GetCue(name), thing);
// Apply initial 3D audio values
cue.Apply3D(listener);
// Keep track of the audio cue until it completes
activeCues.Add(cue);
return(cue);
}
// PerfTimer updateTimer = new PerfTimer(">>> Update Audio ");
public void Update()
{
// this.updateTimer.Start();
// Limit audio updates to 60 fps
if (Time.GameTimeTotalSeconds > lastFrameTimeSeconds &&
Time.GameTimeTotalSeconds - lastFrameTimeSeconds < 1 / 60.0f)
{
return;
}
lastFrameTimeSeconds = Time.GameTimeTotalSeconds;
engine.Update();
// Update 3D audio listener values from camera state
listener.Position = InGame.inGame.Camera.From;
listener.Up = InGame.inGame.Camera.Up;
listener.Forward = InGame.inGame.Camera.At;
listener.Velocity = Vector3.Zero; // Camera doesn't expose a "Velocity" property
// Loop through active audio cues, updating 3D values and recycling completed cues
for (int cueIndex = 0; cueIndex < activeCues.Count; ++cueIndex)
{
AudioCue cue = activeCues[cueIndex];
// If cue is done playing, recycle it. Because we create
// and destroy AudioCue objects frequently, this helps avoid
// unnecessary garbage collector activity.
if (cue.IsComplete)
{
cue.Reset();
spareCues.Add(cue);
activeCues.RemoveAt(cueIndex);
--cueIndex;
continue;
}
// Update cue's 3D audio values
cue.Apply3D(listener);
}
// this.updateTimer.Stop();
}
