/// <summary>
/// Scrubs the currently-playing track to a specific point in its timeline.
/// </summary>
/// <param name="time">How far along to scrub the track, in seconds</param>
public void Scrub(float time)
{
if (PlayingTrack != null)
{
time = Mathf.Min(time, PlayingTrack.LengthInSeconds);
CurrentSpeaker.SetPosition(PlayingTrack, PlayingTrack.SecondsToSamples(time));
}
}
private void Update()
{
for (int i = 0; i < playingTracks.Count; ++i)
{
PlayingTrack pt = playingTracks[i];
if (pt.audioSource.volume != pt.targetVolume)
{
if (!pt.fadeStarted)
{
if (pt.targetVolume == 0)
{
float timeDiff = baseTrack.loopTrack.clip.length - baseTrack.audioSource.time;
pt.fadeStarted = timeDiff <= fadeTime;
}
else
{
pt.fadeStarted = baseTrack.audioSource.time <= fadeTime;
}
}
if (pt.fadeStarted == true)
{
float volumeFactor = 0;
if (pt.targetVolume == 0)
{
float timeDiff = baseTrack.loopTrack.clip.length - baseTrack.audioSource.time;
volumeFactor = Mathf.Clamp01(timeDiff / fadeTime);
if (volumeFactor * pt.loopTrack.volume > pt.audioSource.volume) //Wrapping
{
volumeFactor = 0;
}
}
else
{
volumeFactor = Mathf.Clamp01(baseTrack.audioSource.time / fadeTime);
}
pt.audioSource.volume = pt.loopTrack.volume * volumeFactor;
}
if (pt.audioSource.volume == pt.targetVolume)
{
pt.fadeStarted = false;
if (pt.targetVolume > 0)
{
onLoopStarted.Invoke(pt.loopTrack);
}
else
{
onLoopStopped.Invoke(pt.loopTrack);
}
}
}
}
}
public void AddTrack(LoopTrack aTrack)
{
PlayingTrack pt = new PlayingTrack();
pt.audioSource = GetNewAudioSource(aTrack);
pt.loopTrack = aTrack;
playingTracks.Add(pt);
}
/// <summary>
/// Plays the given track starting at the given play position.
/// </summary>
/// <param name="track">The track to play</param>
/// <param name="time">The time to play the track at, in seconds</param>
/// <param name="numberOfLoops">The number of times to loop the track. Set to 0 for endless play.</param>
public void PlayAtPoint(MusicTrack track, float time, int numberOfLoops)
{
RemovePauseState();
Stop();
SetTrack(track);
IntroSource.clip = PlayingTrack.IntroClip;
LoopSource.clip = PlayingTrack.LoopClip;
PlayAtPosition(PlayingTrack.SecondsToSamples(time), numberOfLoops);
}
public void StopTrack(LoopTrack aTrack)
{
PlayingTrack pt = playingTracks.Find(x => x.loopTrack == aTrack);
if (pt == null)
{
Debug.LogError("Trying to stop track that hasn't been added: " + aTrack.ToString());
return;
}
pt.targetVolume = 0;
}
public void SetBaseTrack(LoopTrack aTrack)
{
PlayingTrack pt = playingTracks.Find(x => x.loopTrack == aTrack);
if (pt == null)
{
Debug.LogError("Trying to set base track that hasn't been added: " + aTrack.ToString());
return;
}
baseTrack = pt;
}
internal void SetPosition(MusicTrack track, int position)
{
SetTrack(track);
if (IsPaused)
{
pausePosition = Math.Min(position, CurrentLengthInSamples);
}
else if (IsPlaying)
{
PlayAtPoint(PlayingTrack.SamplesToSeconds(position), numberOfLoopsLeft);
}
}
public void RemoveTrack(LoopTrack aTrack)
{
PlayingTrack pt = playingTracks.Find(x => x.loopTrack == aTrack);
if (pt == null)
{
Debug.LogError("Trying to remove track that hasn't been added: " + aTrack.ToString());
return;
}
if (pt == baseTrack)
{
Debug.LogError("Trying to remove base track [" + aTrack.ToString() + "], replace with another track first!");
return;
}
Destroy(pt.audioSource);
playingTracks.Remove(pt);
}
/// <summary>
/// Plays the current track starting at the given play position.
/// </summary>
/// <param name="samplePosition">The play position, in samples</param>
/// <param name="numberOfLoops">The number of times to loop the track. Set to 0 for endless play.</param>
private void PlayAtPosition(int samplePosition, int numberOfLoops)
{
if (PlayingTrack != null)
{
if (samplePosition <= IntroSource.clip.samples)
{
IntroSource.timeSamples = samplePosition;
LoopSource.timeSamples = 0;
IntroSource.Play();
LoopSource.PlayDelayed(PlayingTrack.SamplesToSeconds(IntroSource.clip.samples - samplePosition));
}
else
{
LoopSource.timeSamples = samplePosition - IntroSource.clip.samples;
LoopSource.Play();
}
numberOfLoopsLeft = numberOfLoops;
InvokeRepeating("OnTrackEndOrLoop",
PlayingTrack.SamplesToSeconds(PlayingTrack.LengthInSamples - samplePosition),
PlayingTrack.SamplesToSeconds(PlayingTrack.LoopLength));
}
}
