async UniTask ApplyVolumeTransition(BgmReference bgm, float maxVolume, AnimationCurveSO curve)
{
var cancellationToken = bgm.CreateTransitionCt();
await Curve.EvaluateAsync(curve.Value, OnVolumeChanged, ct : cancellationToken);
void OnVolumeChanged(float volume)
{
if (bgm != null && bgm.AudioSource != null)
{
bgm.AudioSource.volume = volume * maxVolume;
}
}
}
async UniTask StopTrackAsync(BgmReference bgm, AnimationCurveSO outgoingTransition = null)
{
// Cancel any transitions if not complete
bgm.CancelVolumeTransition();
// Remove from referencable list
audioReferences.Remove(bgm);
if (outgoingTransition != null)
{
//BUG: If a track is fading in at this time, it will instantly play at "MaxVolume" before fading out.
await ApplyVolumeTransition(bgm, bgm.AudioSO.Details.MaxVolume, outgoingTransition);
}
bgm.AudioSO.Unload();
// Destroy when outgoing transition is complete
Destroy(bgm.GameObject);
}