From c73fa3d7a63b95bbfae01c358d6171c82100d3d7 Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Fri, 28 Jun 2024 18:00:36 +0300
Subject: [PATCH] filesystem: fix mounting wads again

Because of the mounting order, VFS fails to automatically find unpacked WADs
---
 filesystem/filesystem.c |  2 +-
 filesystem/filesystem.h |  1 +
 filesystem/wad.c        | 15 +++++++++++----
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/filesystem/filesystem.c b/filesystem/filesystem.c
index 2a6f4e65..964008f3 100644
--- a/filesystem/filesystem.c
+++ b/filesystem/filesystem.c
@@ -333,7 +333,7 @@ searchpath_t *FS_AddArchive_Fullpath( const fs_archive_t *archive, const char *f
 			char fullpath[MAX_SYSPATH];
 
 			Q_snprintf( fullpath, sizeof( fullpath ), "%s/%s", file, list.strings[i] );
-			if(( wad = FS_AddWad_Fullpath( fullpath, flags )))
+			if(( wad = FS_AddWad_Fullpath( fullpath, flags | FS_LOAD_PACKED_WAD )))
 			{
 				wad->next = fs_searchpaths;
 				fs_searchpaths = wad;
diff --git a/filesystem/filesystem.h b/filesystem/filesystem.h
index 8f001252..c3c9206f 100644
--- a/filesystem/filesystem.h
+++ b/filesystem/filesystem.h
@@ -45,6 +45,7 @@ enum
 	FS_GAMERODIR_PATH = BIT( 4 ), // gamedir but read-only
 
 	FS_SKIP_ARCHIVED_WADS = BIT( 5 ), // don't mount wads inside archives automatically
+	FS_LOAD_PACKED_WAD = BIT( 6 ), // this wad is packed inside other archive
 
 	FS_GAMEDIRONLY_SEARCH_FLAGS = FS_GAMEDIR_PATH | FS_CUSTOM_PATH | FS_GAMERODIR_PATH
 };
diff --git a/filesystem/wad.c b/filesystem/wad.c
index 14f25dc4..8ca55d8b 100644
--- a/filesystem/wad.c
+++ b/filesystem/wad.c
@@ -286,16 +286,23 @@ W_Open
 open the wad for reading & writing
 ===========
 */
-static wfile_t *W_Open( const char *filename, int *error )
+static wfile_t *W_Open( const char *filename, int *error, uint flags )
 {
 	wfile_t		*wad = (wfile_t *)Mem_Calloc( fs_mempool, sizeof( wfile_t ));
 	int		i, lumpcount;
 	dlumpinfo_t	*srclumps;
 	size_t		lat_size;
 	dwadinfo_t	header;
-	const char *basename = COM_FileWithoutPath( filename );
 
-	wad->handle = FS_Open( basename, "rb", false );
+	if( FBitSet( flags, FS_LOAD_PACKED_WAD ))
+	{
+		const char *basename = COM_FileWithoutPath( filename );
+		wad->handle = FS_Open( basename, "rb", false );
+	}
+	else
+	{
+		wad->handle = FS_SysOpen( filename, "rb" );
+	}
 
 	if( wad->handle == NULL )
 	{
@@ -629,7 +636,7 @@ searchpath_t *FS_AddWad_Fullpath( const char *wadfile, int flags )
 	wfile_t *wad;
 	int errorcode = WAD_LOAD_COULDNT_OPEN;
 
-	wad = W_Open( wadfile, &errorcode );
+	wad = W_Open( wadfile, &errorcode, flags );
 
 	if( !wad )
 	{