fix fds not saving game

src/driver.h

@@ -179,6 +179,11 @@ void FCEUI_SetRenderedLines(int ntscf, int ntscl, int palf, int pall);
    below this directory. */
 void FCEUI_SetBaseDirectory(char *dir);
 
+#ifdef __LIBRETRO__
+void FCEUI_SetSaveDirectory(char *sav_dir);
+#endif
+
+
 /* Tells FCE Ultra to copy the palette data pointed to by pal and use it.
    Data pointed to by pal needs to be 64*3 bytes in length.
 */

src/drivers/libretro/libretro.c

@@ -1637,6 +1637,7 @@ bool retro_load_game(const struct retro_game_info *game)
 {
    unsigned i;
    char* dir=NULL;
+   char* sav_dir=NULL;
    size_t fourscore_len = sizeof(fourscore_db_list)   / sizeof(fourscore_db_list[0]);
    size_t famicom_4p_len = sizeof(famicom_4p_db_list) / sizeof(famicom_4p_db_list[0]);
 
@@ -1706,6 +1707,8 @@ bool retro_load_game(const struct retro_game_info *game)
 
    if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
       FCEUI_SetBaseDirectory(dir);
+   if (environ_cb(RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY, &sav_dir) && sav_dir)
+      FCEUI_SetSaveDirectory(sav_dir);
 
    FCEUI_Initialize();
 

src/general.c

@@ -42,6 +42,7 @@
 #include "md5.h"
 
 static char BaseDirectory[2048];
+static char SaveDirectory[2048];
 static char FileBase[2048];
 static char FileExt[2048];	/* Includes the . character, as in ".nes" */
 
@@ -53,6 +54,12 @@ void FCEUI_SetBaseDirectory(char *dir)
 	BaseDirectory[2047] = 0;
 }
 
+void FCEUI_SetSaveDirectory(char *sav_dir)
+{
+	strncpy(SaveDirectory, sav_dir, 2047);
+	SaveDirectory[2047] = 0;
+}
+
 static char *odirs[FCEUIOD__COUNT] = { 0, 0, 0, 0, 0, 0 };		// odirs, odors. ^_^
 
 void FCEUI_SetDirOverride(int which, char *n)
@@ -87,6 +94,9 @@ char *FCEU_MakeFName(int type, int id1, char *cd1)
          else
             sprintf(tmp, "%s"PSS "gameinfo"PSS "%s.pal", BaseDirectory, FileBase);
          break;
+      case FCEUMKF_FDS:
+         sprintf(tmp, "%s"PSS "%s.fds", SaveDirectory, FileBase);
+         break;
       default:
          break;
    }