Fix tile coordinate when checking collision

src/collision.c

@@ -23,12 +23,12 @@ uint8_t get_tile_coord(uint8_t pixel_coord) {
 }
 
 uint8_t player_bg_collides(void) {
-    const int8_t map_x = PLAYER.x / 8 + MAP.camera_x;
+    const int8_t map_x = get_tile_coord(PLAYER.x) + MAP.camera_x;
     if (map_x < 0 || map_x + 1 >= MAP.map_width) {
         return 1;
     }
 
-    const int8_t map_y = PLAYER.y_hi / 8 + MAP.camera_y;
+    const int8_t map_y = get_tile_coord(PLAYER.y_hi) + MAP.camera_y;
     if (map_y < 0 || map_y + 1 >= MAP.map_height) {
         return 1;
     }