/// <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 static int getChannelIdx(SoundProp sp)
{
for (int i = 0; i < CHANNELS; i++)
{
if (fx[i].clip != null)
{
if (!fx[i].isPlaying)
{
// Found a audiosource that is not currently being played
if (fx[i].clip != sp.audioClip)
{
return(i);
}
}
}
else
{
return(i);
}
}
// No audiosource idle. Find a busy audiosource with less priority than the new one
for (int i = 0; i < CHANNELS; i++)
{
SoundProp prop = soundList.GetSoundPropByName(fx[i].clip.name);
if (sp.priority > prop.priority)
{
return(i);
}
}
// Try something with the same priority
for (int i = 0; i < CHANNELS; i++)
{
SoundProp prop = soundList.GetSoundPropByName(fx[i].clip.name);
if (sp.priority == prop.priority)
{
return(i);
}
}
// Cannot find a suitable channel
return(-1);
}
