/// <summary>
/// 停止背景音乐
/// </summary>
/// <param name="fadeout">淡出时间，默认0.5s</param>
/// <returns></returns>
public SoundPiece StopBGM(float fadeout = 0.5f)
{
Queue <SoundEffect> effectsq = new Queue <SoundEffect>();
if (fadeout != 0f)
{
effectsq.Enqueue(SoundBuilder.VolumeDownBGM(fadeout, 1));
}
effectsq.Enqueue(SoundBuilder.RemoveBGM());
return(new SoundPiece(id++, effectsq));
}
/// <summary>
/// 暂停背景音乐
/// </summary>
/// <param name="fadeout">淡出时间，默认0s</param>
/// <returns></returns>
public SoundPiece PauseBGM(float fadeout = 0f)
{
Queue <SoundEffect> effectsq = new Queue <SoundEffect>();
if (fadeout != 0f)
{
effectsq.Enqueue(SoundBuilder.VolumeDownBGM(fadeout, 1));
}
effectsq.Enqueue(SoundBuilder.PauseBGM());
return(new SoundPiece(id++, effectsq));
//return null;
}