libretro.c: Use common memory card 2 for all games

Memory card 2 is in the same folder as the loaded game.

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 634242f..1e888e1 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -1667,7 +1667,15 @@ void retro_init(void)
    if(!__ctr_svchax)
       Config.Cpu = CPU_INTERPRETER;
 #endif
-       strcpy(Config.Mcd2, "memcard2.mcd");
+       if (environ_cb(RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY, &dir) && dir) {
+               const char CARD_FILE[] = "pcsx-card2.mcd";
+               if (strlen(dir) + strlen(CARD_FILE) + 2 > sizeof(Config.Mcd2)) {
+                       SysPrintf("Path '%s' is too long. Cannot use memcard 2. Use a shorter path.\n", dir);
+               } else {
+                       snprintf(Config.Mcd2, sizeof(Config.Mcd2), "%s/%s", dir, CARD_FILE);
+                       SysPrintf("Use memory card2: %s\n", Config.Mcd2);
+               }
+       }
 
        ret |= emu_core_init();
        if (ret != 0) {