From 9cca4ff71d59f59cf86979cd9e7c6f975a9c3692 Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@zdoom.fake>
Date: Sat, 26 Jan 2013 02:54:09 +0000
Subject: [PATCH] - Fixed: Lost Souls spawned by Pain Elementals were not
 killed by DF2_KILLBOSSMONST.

SVN r4047 (trunk)
---
 src/g_doom/a_bossbrain.cpp     | 20 +++++++++++++-------
 src/g_doom/a_painelemental.cpp |  2 ++
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/src/g_doom/a_bossbrain.cpp b/src/g_doom/a_bossbrain.cpp
index f0263f5bc2..873b5c6dc0 100644
--- a/src/g_doom/a_bossbrain.cpp
+++ b/src/g_doom/a_bossbrain.cpp
@@ -79,16 +79,22 @@ DEFINE_ACTION_FUNCTION(AActor, A_BrainDie)
 	// New dmflag: Kill all boss spawned monsters before ending the level.
 	if (dmflags2 & DF2_KILLBOSSMONST)
 	{
-		TThinkerIterator<AActor> it;
-		AActor *mo;
-		while ((mo = it.Next()))
+		int count;	// Repeat until we have no more boss-spawned monsters.
+		do			// (e.g. Pain Elementals can spawn more to kill upon death.)
 		{
-			if (mo->flags4 & MF4_BOSSSPAWNED)
+			TThinkerIterator<AActor> it;
+			AActor *mo;
+			count = 0;
+			while ((mo = it.Next()))
 			{
-				P_DamageMobj(mo, self, self, mo->health, NAME_None, 
-					DMG_NO_ARMOR|DMG_FORCED|DMG_THRUSTLESS|DMG_NO_FACTOR);
+				if (mo->health > 0 && mo->flags4 & MF4_BOSSSPAWNED)
+				{
+					P_DamageMobj(mo, self, self, mo->health, NAME_None, 
+						DMG_NO_ARMOR|DMG_FORCED|DMG_THRUSTLESS|DMG_NO_FACTOR);
+					count++;
+				}
 			}
-		}
+		} while (count != 0);
 	}
 
 	G_ExitLevel (0, false);
diff --git a/src/g_doom/a_painelemental.cpp b/src/g_doom/a_painelemental.cpp
index 55451a8927..db7d83021c 100644
--- a/src/g_doom/a_painelemental.cpp
+++ b/src/g_doom/a_painelemental.cpp
@@ -111,6 +111,8 @@ void A_PainShootSkull (AActor *self, angle_t angle, const PClass *spawntype, int
 
 	other = Spawn (spawntype, x, y, z, ALLOW_REPLACE);
 
+	// Transfer boss-spawned flag
+	other->flags4 |= self->flags4 & MF4_BOSSSPAWNED;
 
 	// Check to see if the new Lost Soul's z value is above the
 	// ceiling of its new sector, or below the floor. If so, kill it.