/// <summary>
/// Returns a channeld idx to play a sound.
/// Could be:
/// 1. An empty channel (not yet used)
/// 2. An IDLE channel
/// 3. A busy channel but with less priority
/// 4. A busy channel with the same priority
///
/// If there isn't a channel that satisfy these conditions, returns -1
///
/// </summary>
/// <returns></returns>
private int GetChannelIdx(SoundManagerClip smc)
{
for (int i = 0; i < channels; i++)
{
if (_fxASList[i].clip == null || !_fxASList[i].isPlaying)
{
return(i);
}
}
// No audiosource idle. Find a busy audiosource with less priority than the new one
for (int i = 0; i < channels; i++)
{
if (_fxASList[i].clip != null && _listOfClipsInUse[i] != null && smc.priority > _listOfClipsInUse[i].priority)
{
Debug.LogWarning("[SoundManager] Using a used channel with less priority.");
return(i);
}
}
// Try something with the same priority
for (int i = 0; i < channels; i++)
{
if (_fxASList[i].clip != null && _listOfClipsInUse[i] != null && smc.priority == _listOfClipsInUse[i].priority)
{
Debug.LogWarning("[SoundManager] Using a used channel with the same priority.");
return(i);
}
}
// Cannot find a suitable channel
return(-1);
}
/// <summary>
/// Play the specified soundmanagerclip on the specified audiosource
/// </summary>
private void PlayThisSoundOnSource(int chnId, SoundManagerClip smc, Vector3 pos)
{
_fxASList[chnId].Stop();
SetInfoOnAudioSource(chnId, smc, pos);
_fxASList[chnId].Play();
}
/// <summary>
/// Copy the params from soundmanagerclip to the properties of the audiosource
/// </summary>
private void SetInfoOnAudioSource(int chnId, SoundManagerClip smc, Vector3 pos)
{
_fxASList[chnId].clip = smc.clip;
_fxASList[chnId].loop = smc.loop;
_fxASList[chnId].volume = smc.volume;
_fxASList[chnId].pitch = smc.pitch;
_fxASList[chnId].panStereo = smc.stereoPan;
_fxASList[chnId].outputAudioMixerGroup = smc.mixerGroup;
_fxASList[chnId].transform.position = pos;
}
