protected override void Play(Playback play)
{
int channel = -1;
bool setChannel = false;
if (!play.VirtualChannel.Equals(Sound.GLOBAL_VIRTUAL_CHANNEL))
{
if (channels.TryGetValue(play.VirtualChannel, out int vc))
{
SDL_mixer.Mix_HaltChannel(vc);
channels.Remove(play.VirtualChannel);
}
setChannel = true;
}
channel = SDL_mixer.Mix_PlayChannel(-1, play.Sound.GetChunk(), play.Loop ? -1 : 0);
if (channel == -1)
{
Logger.Error("Sound", $"Failed to play sound '{play.Sound}', no more channels available");
}
else
{
SDL_mixer.Mix_ChannelFinished(channelFinished);
Logger.Info("Sound", $"Playing sound '{play.Sound}' on channel {channel} ({play.VirtualChannel})");
}
byte dist;
if (play.Location.X != 0 || play.Location.Y != 0)
{
float v = 255.0f * (CalcDist(lastPos, play.Location) / soundFallOff);
v = Math.Min(Math.Max(v, 0.0f), 255.0f);
dist = (byte)v;
}
else
{
dist = 0;
}
SetChannelPosition(channel, 0, dist);
if (setChannel)
{
channels[play.VirtualChannel] = channel;
}
playback[channel] = play;
}
