From 46efa73d5f3cf7da8dc47e2d64485b034f4bdfac Mon Sep 17 00:00:00 2001
From: NepDisk <16447892+NepDisk@users.noreply.github.com>
Date: Mon, 21 Oct 2024 23:55:41 -0400
Subject: [PATCH] Fix mapid music lumps

---
 src/s_sound.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/s_sound.c b/src/s_sound.c
index 3413f05a9..e95c110ed 100644
--- a/src/s_sound.c
+++ b/src/s_sound.c
@@ -2521,7 +2521,12 @@ void S_InitLevelMusic(boolean fromnetsave)
 					mapmusrng = 0;
 			}
 		}
-		strncpy(mapmusname, mapheaderinfo[gamemap-1]->musname[mapmusrng], 7);
+		
+		if (mapheaderinfo[gamemap-1]->musname[0][0] == 0)
+			strncpy(mapmusname, va("%sM", G_BuildMapName(gamemap)), 7);
+		else
+			strncpy(mapmusname, mapheaderinfo[gamemap-1]->musname[mapmusrng], 7);
+		
 		mapmusname[6] = 0;
 		mapmusflags = (mapheaderinfo[gamemap-1]->mustrack & MUSIC_TRACKMASK);
 		mapmusposition = mapheaderinfo[gamemap-1]->muspos;