From 0bde8591ee0ae82bc3e02793cc3caa5b1e74d911 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Fri, 15 Oct 2010 15:40:16 +0000
Subject: [PATCH] - forgot to handle GI_MAPxx flag.

SVN r2944 (trunk)
---
 src/d_main.cpp | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/d_main.cpp b/src/d_main.cpp
index 6138c16075..75103e955a 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -1801,6 +1801,21 @@ static FString CheckGameInfo(TArray<FString> & pwads)
 	return "";
 }
 
+//==========================================================================
+//
+// Checks the IWAD for MAP01 and if found sets GI_MAPxx
+//
+//==========================================================================
+
+static void SetMapxxFlag()
+{
+	int lump_name = Wads.CheckNumForName("MAP01", FWadCollection::IWAD_FILENUM);
+	int lump_wad = Wads.CheckNumForFullName("maps/map01.wad", FWadCollection::IWAD_FILENUM);
+	int lump_map = Wads.CheckNumForFullName("maps/map01.map", FWadCollection::IWAD_FILENUM);
+
+	if (lump_name >= 0 || lump_wad >= 0 || lump_map >= 0) gameinfo.flags |= GI_MAPxx;
+}
+
 //==========================================================================
 //
 // D_DoomMain
@@ -1946,7 +1961,8 @@ void D_DoomMain (void)
 	Wads.InitMultipleFiles (allwads);
 	allwads.Clear();
 	allwads.ShrinkToFit();
-
+	SetMapxxFlag();
+	
 	// [RH] Initialize localizable strings.
 	GStrings.LoadStrings (false);