- split off all music code from s_sound.cpp

src/d_main.cpp

@@ -102,6 +102,7 @@
 #include "g_cvars.h"
 #include "r_data/r_vanillatrans.h"
 #include "atterm.h"
+#include "s_music.h"
 
 EXTERN_CVAR(Bool, hud_althud)
 EXTERN_CVAR(Int, vr_mode)
@@ -1034,6 +1035,7 @@ void D_DoomLoop ()
 			// Update display, next frame, with current state.
 			I_StartTic ();
 			D_Display ();
+			S_UpdateMusic();
 			if (wantToRestart)
 			{
 				wantToRestart = false;
@@ -2459,6 +2461,7 @@ void D_DoomMain (void)
 
 		if (!batchrun) Printf ("S_Init: Setting up sound.\n");
 		S_Init ();
+		S_InitMusic();
 
 		if (!batchrun) Printf ("ST_Init: Init startup screen.\n");
 		if (!restart)
@@ -2752,6 +2755,7 @@ void D_DoomMain (void)
 		R_DeinitTranslationTables();	// some tables are initialized from outside the translation code.
 		gameinfo.~gameinfo_t();
 		new (&gameinfo) gameinfo_t;		// Reset gameinfo
+		S_ShutdownMusic();
 		S_Shutdown();					// free all channels and delete playlist
 		C_ClearAliases();				// CCMDs won't be reinitialized so these need to be deleted here
 		DestroyCVarsFlagged(CVAR_MOD);	// Delete any cvar left by mods