From 5af1e6f734b631bca677559324477bf319c1cd1c Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@zdoom.fake>
Date: Tue, 2 Jul 2013 14:15:08 -0500
Subject: [PATCH] - Added a compatibility option to fix Super Sonic Doom's
 first bonus   stage leaving you frozen when you finished it.

---
 src/compatibility.cpp           | 1 +
 src/doomdef.h                   | 1 +
 src/p_lnspec.cpp                | 5 +++++
 wadsrc/static/compatibility.txt | 8 ++++++++
 4 files changed, 15 insertions(+)

diff --git a/src/compatibility.cpp b/src/compatibility.cpp
index 4a4f19d6b..7bbff7322 100644
--- a/src/compatibility.cpp
+++ b/src/compatibility.cpp
@@ -105,6 +105,7 @@ static FCompatOption Options[] =
 	{ "vileghosts",				BCOMPATF_VILEGHOSTS, SLOT_BCOMPAT },
 	{ "ignoreteleporttags",		BCOMPATF_BADTELEPORTERS, SLOT_BCOMPAT },
 	{ "rebuildnodes",			BCOMPATF_REBUILDNODES, SLOT_BCOMPAT },
+	{ "linkfrozenprops",		BCOMPATF_LINKFROZENPROPS, SLOT_BCOMPAT },
 
 	// list copied from g_mapinfo.cpp
 	{ "shorttex",				COMPATF_SHORTTEX, SLOT_COMPAT },
diff --git a/src/doomdef.h b/src/doomdef.h
index 3a3c31e6a..675923b4a 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -349,6 +349,7 @@ enum
 	BCOMPATF_BADTELEPORTERS		= 1 << 3,	// Ignore tags on Teleport specials
 	BCOMPATF_BADPORTALS			= 1 << 4,	// Restores the old unstable portal behavior
 	BCOMPATF_REBUILDNODES		= 1 << 5,	// Force node rebuild
+	BCOMPATF_LINKFROZENPROPS	= 1 << 6,	// Clearing PROP_TOTALLYFROZEN or PROP_FROZEN also clears the other
 };
 
 // phares 3/20/98:
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index 67df3def1..a0164ab82 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -2813,6 +2813,11 @@ FUNC(LS_SetPlayerProperty)
 	{
 		int i;
 
+		if ((ib_compatflags & BCOMPATF_LINKFROZENPROPS) && (mask & (CF_FROZEN | CF_TOTALLYFROZEN)))
+		{ // Clearing one of these properties clears both of them (if the compat flag is set.)
+			mask = CF_FROZEN | CF_TOTALLYFROZEN;
+		}
+
 		for (i = 0; i < MAXPLAYERS; i++)
 		{
 			if (!playeringame[i])
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index a84ba218b..795b9348a 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -353,3 +353,11 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 	// make the blue key spawn above the 3D floor
 	setthingz 918 296
 }
+
+64B6CE3CB7349B6F6B1A885C449ACB96 // Super Sonic Doom, map31
+{
+	// During the end-of-level tally, both PROP_FROZEN and PROP_TOTALLYFROZEN
+	// are set, but only PROP_TOTALLYFROZEN is cleared, so PROP_FROZEN is
+	// still set when returning to the origin map.
+	linkfrozenprops
+}