public SoundPiece ChangeVolumeBGM(float time, float p)
{
Queue <SoundEffect> effectsq = new Queue <SoundEffect>();
effectsq.Enqueue(SoundBuilder.VolumeUpBGM(time, p));
return(new SoundPiece(id++, effectsq));
}
/// <summary>
/// 继续背景音乐
/// </summary>
/// <param name="fadein">淡入时间，默认0</param>
/// <returns></returns>
public SoundPiece UnpauseBGM(float fadein = 0f)
{
Queue <SoundEffect> effectsq = new Queue <SoundEffect>();
effectsq.Enqueue(SoundBuilder.UnpauseBGM());
if (fadein != 0f)
{
effectsq.Enqueue(SoundBuilder.VolumeUpBGM(fadein, 1));
}
return(new SoundPiece(id++, effectsq));
}