Fix crash in fog code when loading save from different/incompatible game DLL. Add support for game DLLs compiled for current development version.

Fixed crash in Fog_Off() when called from ShutdownGame(), typically when trying to load an incompatible savegame from a different (or different version) game DLL.
Added filesytem function exports to game DLL from development branch to support game DLLs compiled for that version.

.gitignore

@@ -0,0 +1,20 @@
+# ignore all make dependency files and linux object binaries
+*.d
+*.o
+bin/
+
+# ignore all the windows binaries - they shouldn't be committed! 
+Debug/
+Release/
+x64/
+.vs/
+*.log
+*.ncb
+*.opt
+*.plg
+*.suo
+*.user
+*.aps
+*.clw
+*.pdb
+*.ilk

game/g_fog.c

@@ -41,11 +41,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #ifdef DISABLE_FOG
 
-void Fog_Init()	{}
+void Fog_Init (void)	{}
 void Fog (edict_t *ent)	{}
-void Fog_Off ()	{}
-void Fog_ConsoleFog ()	{}
-void GLFog ()	{}
+void Fog_Off (qboolean gameShutdown)	{}
+void Fog_ConsoleFog (void)	{}
+void GLFog (void)	{}
 void trig_fog_fade (edict_t *self)	{}
 void init_trigger_fog_delay (edict_t *self)	{}
 void fog_fade (edict_t *self)	{}
@@ -74,7 +74,7 @@ NEW FOG SYSTEM
 =================================================
 */
 
-void Fog_Off (edict_t *player_ent)
+void Client_Fog_Off (edict_t *player_ent)
 {
 	if (!player_ent->client || player_ent->is_bot)
 		return;
@@ -611,7 +611,7 @@ void Fog (edict_t *ent) //vec3_t viewpoint)
 	if (!level.active_fog)
 	{
 		if (level.last_active_fog)
-			Fog_Off();
+			Fog_Off (false);
 		level.last_active_fog = 0;
 		return;
 	}
@@ -635,7 +635,7 @@ void Fog (edict_t *ent) //vec3_t viewpoint)
 	level.last_active_fog = level.active_fog;
 }
 
-void Fog_Off (void)
+void Fog_Off (qboolean gameShutdown)
 {
 	if (deathmatch->value || coop->value)
 		return;
@@ -644,6 +644,11 @@ void Fog_Off (void)
 	{
 		edict_t	*player_ent = &g_edicts[1];
 
+		// If game is shutting down, g_edicts will likely be invalid
+		// and the client will clear the fog automatically
+		if (gameShutdown)
+			return;
+
 		if (!player_ent->client || player_ent->is_bot)
 			return;
 

game/g_func_decs.h

@@ -1113,7 +1113,7 @@ extern void model_die ( edict_t * self , edict_t * inflictor , edict_t * attacke
 extern void model_spawn_use ( edict_t * self , edict_t * other , edict_t * activator ) ;
 extern void modelspawn_think ( edict_t * self ) ;
 extern void PrecacheDebris ( int type ) ;
-extern int PatchDeadSoldier ( ) ;
+extern int PatchDeadSoldier ( void ) ;
 extern void SP_target_fountain ( edict_t * ent ) ;
 extern void target_fountain_delayed_use ( edict_t * self ) ;
 extern void target_fountain_use ( edict_t * ent , edict_t * other , edict_t * activator ) ;
@@ -1462,7 +1462,7 @@ extern void SP_target_fog ( edict_t * self ) ;
 extern void target_fog_use ( edict_t * self , edict_t * other , edict_t * activator ) ;
 extern void fog_fade ( edict_t * self ) ;
 extern void Fog_Init ( void ) ;
-extern void Fog_Off ( void ) ;
+extern void Fog_Off ( qboolean gameShutdown ) ;
 extern void Fog ( edict_t * ent ) ;
 extern void init_trigger_fog_delay ( edict_t * self ) ;
 extern void trig_fog_fade ( edict_t * self ) ;

game/g_local.h

@@ -960,10 +960,10 @@ void Moving_Speaker_Think(edict_t *ent);
 #define MAX_FOGS 16
 extern fog_t gfogs[MAX_FOGS];
 void Cmd_Fog_f (edict_t *ent);
-void Fog_Init();
+void Fog_Init (void);
 void Fog (edict_t *ent); //vec3_t viewpoint);
-void Fog_Off();
-void Fog_SetFogParms();
+void Fog_Off (qboolean gameShutdown);
+void Fog_SetFogParms (void);
 //
 // g_func.c
 //

game/g_main.c

@@ -165,7 +165,7 @@ void ShutdownGame (void)
 	}
 	// Lazarus: Turn off fog if it's on
 	if (!dedicated->value)
-		Fog_Off();
+		Fog_Off (true);
 
 	gi.FreeTags (TAG_LEVEL);
 	gi.FreeTags (TAG_GAME);

game/game.h

@@ -198,11 +198,14 @@ typedef struct
 	int		(*LoadFile) (char *name, void **buf);
 	void	(*FreeFile) (void *buf);
 	void	(*FreeFileList) (char **list, int n);
-//	int		(*OpenFile) (const char *name, fileHandle_t *f, fsMode_t mode);
-//	int		(*OpenCompressedFile) (const char *zipName, const char *fileName, fileHandle_t *f, fsMode_t mode);
-//	void	(*CloseFile) (fileHandle_t f);
-//	int		(*FRead) (void *buffer, int size, fileHandle_t f);
-//	int		(*FWrite) (const void *buffer, int size, fileHandle_t f);
+	int		(*OpenFile) (const char *name, fileHandle_t *f, fsMode_t mode);
+	int		(*OpenCompressedFile) (const char *zipName, const char *fileName, fileHandle_t *f, fsMode_t mode);
+	void	(*CloseFile) (fileHandle_t f);
+	int		(*FRead) (void *buffer, int size, fileHandle_t f);
+	int		(*FWrite) (const void *buffer, int size, fileHandle_t f);
+	char	*(*GameDir) (void);
+	char	*(*SaveGameDir) (void);
+	void	(*CreatePath) (char *path);
 #endif
 
 } game_import_t;

game/p_client.c

@@ -2088,7 +2088,7 @@ void ClientBegin (edict_t *ent)
 		return;
 	}
 
-	Fog_Off();
+	Fog_Off (false);
 
 	stuffcmd(ent,"alias +zoomin zoomin;alias -zoomin zoominstop\n");
 	stuffcmd(ent,"alias +zoomout zoomout;alias -zoomout zoomoutstop\n");

server/sv_game.c

@@ -405,6 +405,14 @@ void SV_InitGameProgs (void)
 	import.LoadFile = FS_LoadFile;
 	import.FreeFile = FS_FreeFile;
 	import.FreeFileList = FS_FreeFileList;
+	import.OpenFile = FS_FOpenFile;
+	import.OpenCompressedFile = FS_FOpenCompressedFile;
+	import.CloseFile = FS_FCloseFile;
+	import.FRead = FS_Read;
+	import.FWrite = FS_Write;
+	import.GameDir = FS_GameDir;
+	import.SaveGameDir = FS_GameDir;
+	import.CreatePath = FS_CreatePath;
 
 	import.SetAreaPortalState = CM_SetAreaPortalState;
 	import.AreasConnected = CM_AreasConnected;
@@ -419,4 +427,3 @@ void SV_InitGameProgs (void)
 
 	ge->Init ();
 }
-