- reduced the dependency of the sound system on game state.

Many of the simple wrappers have been moved to a separate file and the sound source handling has been abstracted.
This is only the first phase, the work is not complete yet.
Also changed the license of the sound code to BSD after verifying that this code bears no similarity to id's original sound code anymore, save for a few function names (which are due to be refactored out anyway.)

src/CMakeLists.txt

@@ -879,6 +879,7 @@ set (PCH_SOURCES
 	sound/s_advsound.cpp
 	sound/s_environment.cpp
 	sound/s_sndseq.cpp
+	sound/s_doomsound.cpp
 	sound/s_sound.cpp
 	sound/s_music.cpp
 	serializer.cpp

src/playsim/p_acs.cpp

@@ -5953,7 +5953,7 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 
 				if (args[0] == 0)
 				{
-					S_ChangeSoundVolume(activator, chan, volume);
+					S_ChangeActorSoundVolume(activator, chan, volume);
 				}
 				else
 				{
@@ -5962,7 +5962,7 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 
 					while ((spot = it.Next()) != NULL)
 					{
-						S_ChangeSoundVolume(spot, chan, volume);
+						S_ChangeActorSoundVolume(spot, chan, volume);
 					}
 				}
 			}

src/scripting/vmthunks_actors.cpp

@@ -142,21 +142,21 @@ DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_StopSound, NativeStopSound)
 	return 0;
 }
 
-DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_SoundPitch, S_ChangeSoundPitch)
+DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_SoundPitch, S_ChangeActorSoundPitch)
 {
 	PARAM_SELF_PROLOGUE(AActor);
 	PARAM_INT(channel);
 	PARAM_FLOAT(pitch);
-	S_ChangeSoundPitch(self, channel, pitch);
+	S_ChangeActorSoundPitch(self, channel, pitch);
 	return 0;
 }
 
-DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_SoundVolume, S_ChangeSoundVolume)
+DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_SoundVolume, S_ChangeActorSoundVolume)
 {
 	PARAM_SELF_PROLOGUE(AActor);
 	PARAM_INT(channel);
 	PARAM_FLOAT(volume);
-	S_ChangeSoundVolume(self, channel, volume);
+	S_ChangeActorSoundVolume(self, channel, volume);
 	return 0;
 }
 

src/sound/backend/i_soundinternal.h

@@ -77,6 +77,7 @@ struct SoundListener
 	bool underwater;
 	bool valid;
 	ReverbContainer *Environment;
+	void* ListenerObject;
 };
 
 // Default rolloff information.