// 变更控制状态：准备暂停
public void ToUnPause()
{
if (playingState == BGMPlayingState.Pausing)
{
playingControlState = BGMPlayingControlState.ToUnPause;
}
}
// 变更控制状态：准备停止
public void ToStop()
{
if (playingState == BGMPlayingState.Playing)
{
playingControlState = BGMPlayingControlState.ToStop;
}
}
// 变更控制状态：准备播放
public void ToPlay()
{
if (playingState != BGMPlayingState.Playing)
{
playingControlState = BGMPlayingControlState.ToPlay;
}
}
// Use this for initialization
void Start()
{
audioSource = GetComponent <AudioSource>();
audioSource.loop = false;
// 一开始的音频剪辑
if (startAudioClipIndex == -1 ||
startAudioClipIndex >= audioClips.Count ||
startAudioClipIndex < 0)
{
ChangeAudioClip();
}
else
{
ChangeAudioClip(startAudioClipIndex);
}
playingState = BGMPlayingState.Initing;
playingControlState = BGMPlayingControlState.ToPlay;
audioClipsTime = new float[audioClips.Count];
for (int i = 0; i < audioClips.Count; i++)
{
audioClipsTime[i] = audioClips[i].length;
}
}
// Update is called once per frame
void Update()
{
switch (playingControlState)
{
case BGMPlayingControlState.None:
// 该换碟了！
if (audioSource.isPlaying == false && playingState == BGMPlayingState.Playing)
{
// 如果开启淡入效果，并且此时刚好换放BGM
if (playingState == BGMPlayingState.Initing && fadedOn)
{
StartFade();
}
ChangeAudioClip();
playingControlState = BGMPlayingControlState.ToPlay;
}
break;
case BGMPlayingControlState.ToPause:
audioSource.Pause();
OnControlStateChangedDone();
playingState = BGMPlayingState.Pausing;
break;
case BGMPlayingControlState.ToPlay:
// 如果开启淡入效果，并且此时刚好开始放BGM
if (playingState == BGMPlayingState.Initing && fadedOn)
{
StartFade();
}
audioSource.Play();
OnControlStateChangedDone();
playingState = BGMPlayingState.Playing;
break;
case BGMPlayingControlState.ToStop:
audioSource.Stop();
OnControlStateChangedDone();
playingState = BGMPlayingState.Stoping;
break;
case BGMPlayingControlState.ToUnPause:
audioSource.UnPause();
OnControlStateChangedDone();
playingState = BGMPlayingState.Playing;
break;
default:
break;
}
}
// 控制状态变更完毕的一个回调函数
private void OnControlStateChangedDone()
{
playingControlState = BGMPlayingControlState.None;
}
