From 10f33b892bc95ce27ccb1e31849a7650b959da9b Mon Sep 17 00:00:00 2001
From: Zack Middleton <zturtleman@gmail.com>
Date: Thu, 27 Oct 2016 22:54:33 -0500
Subject: [PATCH] Fix removing/creating PID file for base game when switching
 to/from mods

---
 code/qcommon/files.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/code/qcommon/files.c b/code/qcommon/files.c
index 345907d2..92a9e405 100644
--- a/code/qcommon/files.c
+++ b/code/qcommon/files.c
@@ -303,6 +303,8 @@ static char		*fs_serverReferencedPakNames[MAX_SEARCH_PATHS];		// pk3 names
 
 // last valid game folder used
 char lastValidBase[MAX_OSPATH];
+char lastValidComBaseGame[MAX_OSPATH];
+char lastValidFsBaseGame[MAX_OSPATH];
 char lastValidGame[MAX_OSPATH];
 
 #ifdef FS_MISSING
@@ -3963,6 +3965,8 @@ void FS_InitFilesystem( void ) {
 	}
 
 	Q_strncpyz(lastValidBase, fs_basepath->string, sizeof(lastValidBase));
+	Q_strncpyz(lastValidComBaseGame, com_basegame->string, sizeof(lastValidComBaseGame));
+	Q_strncpyz(lastValidFsBaseGame, fs_basegame->string, sizeof(lastValidFsBaseGame));
 	Q_strncpyz(lastValidGame, fs_gamedirvar->string, sizeof(lastValidGame));
 }
 
@@ -3973,6 +3977,7 @@ FS_Restart
 ================
 */
 void FS_Restart( int checksumFeed ) {
+	const char *lastGameDir;
 
 	// free anything we currently have loaded
 	FS_Shutdown(qfalse);
@@ -3999,8 +4004,12 @@ void FS_Restart( int checksumFeed ) {
 		if (lastValidBase[0]) {
 			FS_PureServerSetLoadedPaks("", "");
 			Cvar_Set("fs_basepath", lastValidBase);
+			Cvar_Set("com_basegame", lastValidComBaseGame);
+			Cvar_Set("fs_basegame", lastValidFsBaseGame);
 			Cvar_Set("fs_game", lastValidGame);
 			lastValidBase[0] = '\0';
+			lastValidComBaseGame[0] = '\0';
+			lastValidFsBaseGame[0] = '\0';
 			lastValidGame[0] = '\0';
 			FS_Restart(checksumFeed);
 			Com_Error( ERR_DROP, "Invalid game folder" );
@@ -4009,9 +4018,11 @@ void FS_Restart( int checksumFeed ) {
 		Com_Error( ERR_FATAL, "Couldn't load default.cfg" );
 	}
 
-	if ( Q_stricmp(fs_gamedirvar->string, lastValidGame) ) {
-		Sys_RemovePIDFile( lastValidGame );
-		Sys_InitPIDFile( fs_gamedirvar->string );
+	lastGameDir = ( lastValidGame[0] ) ? lastValidGame : lastValidComBaseGame;
+
+	if ( Q_stricmp( FS_GetCurrentGameDir(), lastGameDir ) ) {
+		Sys_RemovePIDFile( lastGameDir );
+		Sys_InitPIDFile( FS_GetCurrentGameDir() );
 
 		// skip the q3config.cfg if "safe" is on the command line
 		if ( !Com_SafeMode() ) {
@@ -4020,6 +4031,8 @@ void FS_Restart( int checksumFeed ) {
 	}
 
 	Q_strncpyz(lastValidBase, fs_basepath->string, sizeof(lastValidBase));
+	Q_strncpyz(lastValidComBaseGame, com_basegame->string, sizeof(lastValidComBaseGame));
+	Q_strncpyz(lastValidFsBaseGame, fs_basegame->string, sizeof(lastValidFsBaseGame));
 	Q_strncpyz(lastValidGame, fs_gamedirvar->string, sizeof(lastValidGame));
 
 }