Fixed generic main_bg_se_copy_rect_1_tile_vert() function and replaced some code with it

include/graphic_utils.h

@@ -31,6 +31,10 @@
 #define SE_ROW_LEN 32
 #define SE_COL_LEN 32
 
+// Since y direction goes from the top of the screen to the bottom
+#define SE_UP	-1
+#define SE_DOWN 1
+
 typedef struct
 {
 	int left;
@@ -46,12 +50,11 @@ typedef struct
  */
 void main_bg_se_clear_rect(Rect se_rect);
 
-/* Copies a rect in the main background a single tile up.
- * The se_rect dimensions need to be in number of tiles.
- * This is for the pop menu animation, can later be generalized to more tiles
- * or other directions
+/* Copies a rect in the main background vertically in direction by a single tile.
+ * direction must be either SE_UP or SE_DOWN.
+ * se_rect dimensions are in number of tiles.
  */
-void main_bg_se_copy_rect_1_tile_up(Rect se_rect);
+void main_bg_se_copy_rect_1_tile_vert(Rect se_rect, int direction);
 
 // A wrapper for tte_erase_rect that would use the rect struct
 void tte_erase_rect_wrapper(Rect rect);