public void AddCueToActiveList(AudioCue audioCue)
{
if (!activeCues.Contains(audioCue))
{
activeCues.Add(audioCue);
}
} // end of AddCueToActiveList()
/// <summary>
/// If nothing in the list is me (or descendent) already playing,
/// Play myself and add myself to the list.
/// Returns the new audiocue if it started one, else null.
/// </summary>
/// <param name="list"></param>
public virtual AudioCue Play(GameThing emitter, List <AudioCue> list)
{
for (int i = 0; i < list.Count; ++i)
{
AudioCue cue = list[i];
Sound v = cue.Sound;
if ((v != null) && v.BelongsTo(this))
{
/// Already playing, just bail.
return(null);
}
}
/// Start a random child playing
Sound leaf = Select();
AudioCue toplay = leaf.Play(emitter);
if (emitter != null)
{
toplay.OnComplete += emitter.OnAudioCueComplete;
}
/// Add leaf to list
list.Add(toplay);
return(toplay);
}
/// <summary>
/// Version of GetCue spatialized with a fixed position.
/// </summary>
/// <param name="name"></param>
/// <param name="position"></param>
/// <returns></returns>
public AudioCue GetCue(string name, Vector3 position)
{
AudioCue audioCue = null;
if (spareCues.Count > 0)
{
// Reuse a spare AudioCue instance
audioCue = spareCues[0];
spareCues.RemoveAt(0);
}
else
{
// No spare AudioCue instances available, so create a new one
audioCue = new AudioCue();
}
// Initialize the sound cue
if (Enabled)
{
Cue cue = SoundBank.GetCue(name);
audioCue.Set(cue, position);
// Apply initial 3D audio values
audioCue.Apply3D(listener);
}
else
{
audioCue.Set(null, position);
}
// Cue is not added to activeCues list until played.
return(audioCue);
}
/// <summary>
/// Helper for immediately stopping and clearing out an entire list.
/// </summary>
/// <param name="list"></param>
public static void ClearImmediate(List <AudioCue> list)
{
for (int i = 0; i < list.Count; ++i)
{
AudioCue cue = list[i];
cue.StopImmediate();
}
list.Clear();
}
/// <summary>
/// Will actually start playing, but assumes
/// accompanying bookkeeping has been done. Use Play(list) instead.
/// </summary>
internal AudioCue Play(GameThing emitter)
{
AudioCue cue = BokuGame.Audio.GetCue(cuename, emitter, Spatial);
cue.Play();
cue.Sound = this;
cues.Add(cue);
return(cue);
}
} // end of Playing()
#endregion
#region Internal
private void Restart(AudioCue audioCue, GameThing emitter)
{
audioCue.Reset();
Cue cue = BokuGame.Audio.SoundBank.GetCue(soundName);
audioCue.Set(cue, emitter);
audioCue.Play();
frame = Time.FrameCounter;
lastTime = Time.WallClockTotalSeconds;
} // end of Restart()
/// <summary>
/// Pass an update to the underlying audio engine, as well as
/// cull dead sounds from our active list. Finally, give active
/// cues a chance to apply 3d effects.
/// </summary>
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;
if (Enabled)
{
engine.Update();
if (InGame.inGame != null)
{
// Update 3D audio listener values from camera state
listener.Position = InGame.inGame.Camera.ActualFrom;
listener.Up = InGame.inGame.Camera.ViewUp;
listener.Forward = InGame.inGame.Camera.ViewDir;
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 = activeCues.Count - 1; cueIndex >= 0; --cueIndex)
{
AudioCue cue = activeCues[cueIndex];
if (cue.VirtualDone())
{
cue.DetachSound();
}
// 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);
continue;
}
// Update cue's 3D audio values
if (Enabled)
{
cue.Apply3D(listener);
}
}
// this.updateTimer.Stop();
}
/// <summary>
/// Play sound identified by id (or randomly selected descendent) with
/// (possibly null) emitter for 3d effects, and place sound in list cues.
/// If I'm already playing a sound in the list,
/// do nothing and return null.
/// </summary>
/// <param name="id"></param>
/// <param name="emitter"></param>
/// <param name="cues"></param>
/// <returns></returns>
public AudioCue Play(string id, GameThing emitter, List <AudioCue> cues)
{
AudioCue cue = null;
Voice v = Find(id);
if (v != null)
{
if (v.IsAny)
{
v = v.Parent;
}
cue = v.Play(emitter, cues);
}
return(cue);
}
/// <summary>
/// Full version of GetCue allows the overriding of whether it is spatialized.
/// </summary>
/// <param name="name"></param>
/// <param name="thing"></param>
/// <param name="spatial"></param>
/// <returns></returns>
public AudioCue GetCue(string name, GameThing thing, bool?spatial)
{
AudioCue audioCue = null;
if (spareCues.Count > 0)
{
// Reuse a spare AudioCue instance
audioCue = spareCues[0];
spareCues.RemoveAt(0);
}
else
{
// No spare AudioCue instances available, so create a new one
audioCue = new AudioCue();
}
// Initialize the sound cue
if (Enabled)
{
try
{
Cue cue = SoundBank.GetCue(name);
audioCue.Set(cue, thing);
if (spatial != null)
{
audioCue.Spatial = spatial.Value;
}
// Apply initial 3D audio values
audioCue.Apply3D(listener);
}
catch
{
audioCue.Set(null, thing);
}
}
else
{
audioCue.Set(null, thing);
}
// Cue is not added to activeCues list until played.
return(audioCue);
}
/// <summary>
/// True if the emitter is playing a sound through me.
/// </summary>
/// <param name="emitter"></param>
/// <returns></returns>
internal override bool IsPlaying(GameThing emitter)
{
for (int i = 0; i < cues.Count; ++i)
{
AudioCue cue = cues[i];
if (
(cue.Emitter == emitter)
||
(!Spatial && (emitter == null))
)
{
return(true);
}
}
return(false);
}
/// <summary>
/// If anything(s) in the list are me (or descendent),
/// Stop it and remove it from the list.
/// </summary>
/// <param name="list"></param>
public virtual bool Stop(List <AudioCue> list)
{
bool stopped = false;
for (int i = list.Count - 1; i >= 0; --i)
{
AudioCue cue = list[i];
Sound v = cue.Sound;
if ((v != null) && v.BelongsTo(this))
{
/// Stop v from playing
cue.StopImmediate();
list.RemoveAt(i);
stopped = true;
}
}
return(stopped);
}
/// <summary>
/// Play a spacialized sound attatched to a GameThing.
/// </summary>
/// <param name="emitter"></param>
public void Play(GameThing emitter)
{
// Don't allow mute actors to make noise.
GameActor actor = emitter as GameActor;
if (actor != null && actor.Mute)
{
return;
}
// If a singleton and already playing, ignore this call.
if (singleton && Playing(emitter))
{
return;
}
if (BokuGame.Audio.Enabled)
{
// Ensure we haven't already played this sound this frame.
if (frame == Time.FrameCounter)
{
return;
}
// Make sure enough time has elapsed.
double dt = Time.WallClockTotalSeconds - lastTime;
if (dt < timeGap)
{
return;
}
AudioCue cue = BokuGame.Audio.GetCue(soundName, emitter, true);
cue.Play();
frame = Time.FrameCounter;
lastTime = Time.WallClockTotalSeconds;
} // end if enabled.
} // end of Play()
} // end of Play()
/// <summary>
/// Play a spacialized sound from a fixed position.
/// </summary>
/// <param name="position">Where the sound is coming from.</param>
/// <param name="volume">In range 0..1</param>
public void Play(Vector3 position, float volume)
{
if (BokuGame.Audio.Enabled)
{
// Ensure we haven't already played this sound this frame.
if (frame == Time.FrameCounter)
{
return;
}
// Make sure enough time has elapsed.
double dt = Time.WallClockTotalSeconds - lastTime;
if (dt < timeGap)
{
return;
}
AudioCue cue = BokuGame.Audio.GetCue(soundName, position);
cue.SetVolume(volume);
cue.Play();
frame = Time.FrameCounter;
lastTime = Time.WallClockTotalSeconds;
} // end if enabled.
} // end of Play()
/// <summary>
/// Have I played long enough to restart?
/// </summary>
/// <param name="cue"></param>
/// <returns></returns>
internal bool Done(AudioCue cue)
{
return((VirtualLength > 0.0f) &&
(Time.WallClockTotalSeconds - cue.StartTime >= VirtualLength));
}
/// <summary>
/// Break ties with a cue we've spawned.
/// </summary>
/// <param name="cue"></param>
internal void Detach(AudioCue cue)
{
Debug.Assert(cue.Sound == this, "Someone else's cue detaching from me");
cues.Remove(cue);
cue.Sound = null;
}
