Game state is now preserved in a file

main.c

@@ -1,6 +1,7 @@
 #include "raylib.h"
 #include <math.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
 
@@ -30,6 +31,13 @@ int main() {
   srand(time(NULL));
 
   reset_board(&game_state);
+  FILE* game_file = fopen("save.dat", "rb");
+  if (game_file != NULL) {
+    fseek(game_file, 0, SEEK_SET);
+    fread(&game_state, sizeof(GameState_t), 1, game_file);
+    fclose(game_file);
+  }
+
   InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "2048");
   SetTargetFPS(30); // So my laptop doesn't burn