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Sounds can take over an audio channel that's playing at a lower volume if no free channels are found

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This commit is contained in:
Regalis
2017-05-23 20:02:46 +03:00
parent c2b6632877
commit 3183c9fb03
1 changed files with 48 additions and 28 deletions
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76
Subsurface/Source/Sounds/SoundManager.cs
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@@ -45,7 +45,7 @@ namespace Barotrauma.Sounds
AC = new AudioContext();
ALHelper.Check();
}
catch (DllNotFoundException e)
catch (DllNotFoundException)
{
Program.CrashMessageBox("OpenAL32.dll not found");
throw;
@@ -76,28 +76,56 @@ namespace Barotrauma.Sounds
public static int Play(Sound sound, Vector2 position, float volume = 1.0f, float lowPassGain = 0.0f, bool loop=false)
{
if (Disabled || sound.AlBufferId == -1) return -1;
for (int i = 1; i < DefaultSourceCount; i++)
int sourceIndex = FindAudioSource(volume);
if (sourceIndex > -1)
{
//find a source that's free to use (not playing or paused)
if (OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) == OpenTK.Audio.OpenAL.ALSourceState.Playing
|| OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) == OpenTK.Audio.OpenAL.ALSourceState.Paused) continue;
soundsPlaying[i] = sound;
alBuffers[i] = sound.AlBufferId;
OpenTK.Audio.OpenAL.AL.Source(alSources[i], OpenTK.Audio.OpenAL.ALSourceb.Looping, loop);
OpenTK.Audio.OpenAL.AL.Source(alSources[i], OpenTK.Audio.OpenAL.ALSourcei.Buffer, sound.AlBufferId);
soundsPlaying[sourceIndex] = sound;
alBuffers[sourceIndex] = sound.AlBufferId;
OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSourceb.Looping, loop);
OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSourcei.Buffer, sound.AlBufferId);
UpdateSoundPosition(i, position, volume);
UpdateSoundPosition(sourceIndex, position, volume);
OpenTK.Audio.OpenAL.AL.SourcePlay(alSources[i]);
return i;
OpenTK.Audio.OpenAL.AL.SourcePlay(alSources[sourceIndex]);
}
return -1;
return sourceIndex;
}
private static int FindAudioSource(float volume)
{
//find a source that's free to use (not playing or paused)
for (int i = 1; i < DefaultSourceCount; i++)
{
if (OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) == OpenTK.Audio.OpenAL.ALSourceState.Initial
|| OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) == OpenTK.Audio.OpenAL.ALSourceState.Stopped)
{
return i;
}
}
//not found -> take up the channel that is playing at the lowest volume
float lowestVolume = volume;
int quietestSourceIndex = -1;
for (int i = 1; i < DefaultSourceCount; i++)
{
float vol;
OpenTK.Audio.OpenAL.AL.GetSource(alSources[i], ALSourcef.Gain, out vol);
if (vol < lowestVolume)
{
quietestSourceIndex = i;
lowestVolume = vol;
}
}
if (quietestSourceIndex > -1)
{
Stop(quietestSourceIndex);
}
return quietestSourceIndex;
}
public static int Loop(Sound sound, int sourceIndex, float volume = 1.0f)
@@ -116,7 +144,7 @@ namespace Barotrauma.Sounds
volume = 0.0f;
}
if (sourceIndex<1)
if (sourceIndex<1 || soundsPlaying[sourceIndex] != sound)
{
sourceIndex = Play(sound, position, volume, 0.0f, true);
}
@@ -208,15 +236,7 @@ namespace Barotrauma.Sounds
return isLooping;
}
public static void Volume(int sourceIndex, float volume)
{
if (Disabled) return;
AL.Source(alSources[sourceIndex], ALSourcef.Gain, volume * MasterVolume);
ALHelper.Check();
}
static float lowPassHfGain;
public static float LowPassHFGain
{