Implement I_MusicPaused in SDL2, SDL1.2, and FMOD; console and lua commands

# Conflicts:
#	src/sdl12/mixer_sound.c

src/i_sound.h

@@ -144,6 +144,12 @@ boolean I_MIDIPlaying(void);
 */
 boolean I_MusicPlaying(void);
 
+/**	\brief Get music pause status
+
+	\return boolean
+*/
+boolean I_MusicPaused(void);
+
 //
 //  MIDI I/O
 //

src/lua_baselib.c

@@ -2324,6 +2324,21 @@ static int lib_sMusicPlaying(lua_State *L)
 	return 1;
 }
 
+static int lib_sMusicPaused(lua_State *L)
+{
+	player_t *player = NULL;
+	NOHUD
+	if (!lua_isnone(L, 1) && lua_isuserdata(L, 1))
+	{
+		player = *((player_t **)luaL_checkudata(L, 1, META_PLAYER));
+		if (!player)
+			return LUA_ErrInvalid(L, "player_t");
+	}
+	if (!player || P_IsLocalPlayer(player))
+		lua_pushboolean(L, S_MusicPaused());
+	return 1;
+}
+
 static int lib_sOriginPlaying(lua_State *L)
 {
 	void *origin = *((mobj_t **)luaL_checkudata(L, 1, META_MOBJ));
@@ -2706,6 +2721,7 @@ static luaL_Reg lib[] = {
 	{"S_StopMusic",lib_sStopMusic},
 	{"S_MidiPlaying",lib_sMidiPlaying},
 	{"S_MusicPlaying",lib_sMusicPlaying},
+	{"S_MusicPaused",lib_sMusicPaused},
 	{"S_OriginPlaying",lib_sOriginPlaying},
 	{"S_IdPlaying",lib_sIdPlaying},
 	{"S_SoundPlaying",lib_sSoundPlaying},

src/s_sound.c

@@ -1585,3 +1585,8 @@ boolean S_MusicPlaying(void)
 {
 	return I_MusicPlaying();
 }
+
+boolean S_MusicPaused(void)
+{
+	return I_MusicPaused();
+}

src/s_sound.h

@@ -154,6 +154,9 @@ boolean S_MIDIPlaying(void);
 // Gets general music status
 boolean S_MusicPlaying(void);
 
+// Gets music pause status
+boolean S_MusicPaused(void);
+
 //
 // Updates music & sounds
 //

src/sdl/mixer_sound.c

@@ -62,7 +62,7 @@
 
 UINT8 sound_started = false;
 
-static boolean midimode;
+static boolean midimode, music_paused;
 static Mix_Music *music;
 static UINT8 music_volume, midi_volume, sfx_volume;
 static float loop_point;
@@ -88,7 +88,7 @@ void I_StartupSound(void)
 		return;
 	}
 
-	midimode = false;
+	midimode = music_paused = false;
 	music = NULL;
 	music_volume = midi_volume = sfx_volume = 0;
 
@@ -488,6 +488,9 @@ void I_PauseSong(INT32 handle)
 	(void)handle;
 	if(!midimode)
 		Mix_UnregisterEffect(MIX_CHANNEL_POST, count_music_bytes);
+	if(music) 
+		// music is not paused if there's no music to begin with, see win_snd.c:I_PauseSong
+		music_paused = true;
 	Mix_PauseMusic();
 	songpaused = true;
 }
@@ -503,6 +506,7 @@ void I_ResumeSong(INT32 handle)
 			// midimode and music must be checked in case nothing is actually playing
 			CONS_Alert(CONS_WARNING, "Error registering SDL music position counter: %s\n", Mix_GetError());
 	}
+	music_paused = false;
 	Mix_ResumeMusic();
 	songpaused = false;
 }
@@ -527,6 +531,11 @@ boolean I_MusicPlaying(void)
 	return (boolean)music;
 }
 
+boolean I_MusicPaused(void)
+{
+	return music_paused;
+}
+
 //
 // Digital Music
 //
@@ -574,6 +583,7 @@ boolean I_StartDigSong(const char *musicname, boolean looping)
 	if (lumpnum == LUMPERROR)
 		return false;
 	midimode = false;
+	music_paused = false;
 
 	data = (char *)W_CacheLumpNum(lumpnum, PU_MUSIC);
 	len = W_LumpLength(lumpnum);
@@ -883,6 +893,7 @@ boolean I_PlaySong(INT32 handle, boolean looping)
 	(void)handle;
 
 	midimode = true;
+	music_paused = false;
 
 	if (Mix_PlayMusic(music, looping ? -1 : 0) == -1)
 	{

src/win32/win_snd.c

@@ -478,6 +478,14 @@ boolean I_MusicPlaying(void)
 	return (boolean)music_stream;
 }
 
+boolean I_MusicPaused(void)
+{
+	boolean fmpaused = false;
+	if (music_stream)
+		FMOD_Channel_GetPaused(music_channel, &fmpaused);
+	return fmpaused;
+}
+
 void I_InitDigMusic(void)
 {
 }