From 4a8518e4f190e4b77c76057505400788c35a5473 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Mon, 28 Dec 2009 00:01:07 +0000
Subject: [PATCH] - added a 'copy portal' option so that linedef-based portals
 can be transferred to sectors that already have a tag.

SVN r2053 (trunk)
---
 src/p_setup.cpp | 12 ++++++------
 src/p_spec.cpp  | 42 ++++++++++++++++++++++++++++++++++++------
 2 files changed, 42 insertions(+), 12 deletions(-)

diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index f844b01ea..ab467a77e 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -1601,9 +1601,6 @@ void P_SpawnThings (int position)
 {
 	int numthings = MapThingsConverted.Size();
 
-	// [RH] Spawn slope creating things first.
-	P_SpawnSlopeMakers (&MapThingsConverted[0], &MapThingsConverted[numthings]);
-
 	for (int i=0; i < numthings; i++)
 	{
 		SpawnMapThing (i, &MapThingsConverted[i], position);
@@ -3623,11 +3620,14 @@ void P_SetupLevel (char *lumpname, int position)
 
 	deathmatchstarts.Clear ();
 
-	// Spawn 3d floors - must be done before spawning things so it can't be done in P_SpawnSpecials
-	P_Spawn3DFloors();
-
 	if (!buildmap)
 	{
+		// [RH] Spawn slope creating things first.
+		P_SpawnSlopeMakers (&MapThingsConverted[0], &MapThingsConverted[MapThingsConverted.Size()]);
+
+		// Spawn 3d floors - must be done before spawning things so it can't be done in P_SpawnSpecials
+		P_Spawn3DFloors();
+
 		times[14].Clock();
 		P_SpawnThings(position);
 
diff --git a/src/p_spec.cpp b/src/p_spec.cpp
index 1571ef31b..525a601fa 100644
--- a/src/p_spec.cpp
+++ b/src/p_spec.cpp
@@ -828,6 +828,19 @@ void DWallLightTransfer::DoTransfer (BYTE lightlevel, int target, BYTE flags)
 	}
 }
 
+
+inline void SetPortal(sector_t *sector, INTBOOL ceiling, AStackPoint *portal)
+{
+	if (ceiling)
+	{
+		if (sector->CeilingSkyBox == NULL) sector->CeilingSkyBox = portal;
+	}
+	else
+	{
+		if (sector->FloorSkyBox == NULL) sector->FloorSkyBox = portal;
+	}
+}
+
 void P_SpawnPortal(line_t *line, int sectortag, INTBOOL ceiling, int alpha)
 {
 	for (int i=0;i<numlines;i++)
@@ -858,15 +871,32 @@ void P_SpawnPortal(line_t *line, int sectortag, INTBOOL ceiling, int alpha)
 
 		    for (int s=-1; (s = P_FindSectorFromTag(sectortag,s)) >= 0;)
 			{
-				if (ceiling)
+				SetPortal(&sectors[s], ceiling, reference);
+			}
+
+			for (int j=0;j<numlines;j++)
+			{
+				// Check if this portal needs to be copied to other sectors
+				// This must be done here to ensure that it gets done only after the portal is set up
+				if (lines[i].special == Sector_SetPortal &&
+					lines[i].args[1] == 1 &&
+					lines[i].args[2] == ceiling &&
+					lines[i].args[3] == sectortag)
 				{
-					if (sectors[s].CeilingSkyBox == NULL) sectors[s].CeilingSkyBox = reference;
-				}
-				else
-				{
-					if (sectors[s].FloorSkyBox == NULL) sectors[s].FloorSkyBox = reference;
+					if (lines[i].args[0] == 0)
+					{
+						SetPortal(lines[i].frontsector, ceiling, reference);
+					}
+					else
+					{
+						for (int s=-1; (s = P_FindSectorFromTag(lines[i].args[0],s)) >= 0;)
+						{
+							SetPortal(&sectors[s], ceiling, reference);
+						}
+					}
 				}
 			}
+
 			return;
 		}
 	}