/// <summary>播放一个3D声音</summary>
public void PlaySound3D(string soundName, Transform target, bool isLoop = false, DelSoundCallback callback = null)
{
playSound(soundName, target, isLoop, callback);
}
/// <summary>播放一个2D声音</summary>
public void PlaySound2D(string soundName, bool isLoop = false, DelSoundCallback callback = null)
{
playSound(soundName, null, isLoop, callback);
}