- changed the trip bomb indexing to use a separate counter for robustness.

source/games/duke/src/player_d.cpp

@@ -890,7 +890,10 @@ static void shootlaser(DDukeActor* actor, int p, int sx, int sy, int sz, int sa)
 			}
 		}
 
-		bomb->s.hitag = bomb->GetIndex();	// sigh...
+		// this originally used the sprite index as tag to link the laser segments.
+		// This value is never used again to reference an actor by index. Decouple this for robustness.
+		ud.bomb_tag = (ud.bomb_tag + 1) & 32767;
+		bomb->s.hitag = ud.bomb_tag;
 		S_PlayActorSound(LASERTRIP_ONWALL, bomb);
 		bomb->s.xvel = -20;
 		ssp(bomb, CLIPMASK0);

source/games/duke/src/savegame.cpp

@@ -379,6 +379,7 @@ void GameInterface::SerializeGameState(FSerializer& arc)
 			("marker", ud.marker)
 			("ffire", ud.ffire)
 			("levelclock", ud.levelclock)
+			("bomb_tag", ud.bomb_tag)
 
 			.Array("sectorextra", sectorextra, numsectors)
 			("rtsplaying", rtsplaying)

source/games/duke/src/spawn_d.cpp

@@ -339,7 +339,8 @@ int spawn_d(int j, int pn)
                 sp->yrepeat=5;
 
                 act->SetOwner(act);
-                sp->hitag = i; // hijack
+                ud.bomb_tag = (ud.bomb_tag + 1) & 32767;
+                sp->hitag = ud.bomb_tag;
 
                 sp->xvel = 16;
                 ssp(act, CLIPMASK0);

source/games/duke/src/types.h

@@ -132,6 +132,7 @@ struct user_defs
 
 	short from_bonus;
 	short last_level, secretlevel;
+	short bomb_tag;
 
 	int const_visibility;