through sub_8124278

asm/region_map.s

@@ -5,52 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8124238
-sub_8124238: @ 8124238
-	push {r4,lr}
-	ldr r4, =gRegionMap
-	ldr r0, [r4]
-	ldr r0, [r0, 0x1C]
-	cmp r0, 0
-	beq _0812425C
-	bl DestroySprite
-	ldr r0, [r4]
-	adds r0, 0x58
-	ldrh r0, [r0]
-	bl FreeSpriteTilesByTag
-	ldr r0, [r4]
-	adds r0, 0x5A
-	ldrh r0, [r0]
-	bl FreeSpritePaletteByTag
-_0812425C:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_8124238
-
-	thumb_func_start sub_8124268
-sub_8124268: @ 8124268
-	ldr r0, =gRegionMap
-	ldr r0, [r0]
-	ldr r1, [r0, 0x1C]
-	movs r0, 0x1
-	strh r0, [r1, 0x34]
-	bx lr
-	.pool
-	thumb_func_end sub_8124268
-
-	thumb_func_start sub_8124278
-sub_8124278: @ 8124278
-	ldr r0, =gRegionMap
-	ldr r0, [r0]
-	ldr r1, [r0, 0x1C]
-	movs r0, 0
-	strh r0, [r1, 0x34]
-	bx lr
-	.pool
-	thumb_func_end sub_8124278
-
 	thumb_func_start sub_8124288
 sub_8124288: @ 8124288
 	push {r4-r6,lr}

src/region_map.c

@@ -56,7 +56,7 @@ static void sub_8123F30(u16 *x, u16 *y);
 static bool32 sub_8123F74(u8 mapSecId);
 static void sub_8123FB0(void);
 static bool8 sub_8124038(u16 y);
-void sub_8124238(void);
+static void sub_8124238(void);
 void sub_81243B0(void);
 void sub_81243DC(void);
 
@@ -1021,6 +1021,26 @@ void CreateRegionMapCursor(u16 tileTag, u16 paletteTag)
         }
         gRegionMap->cursorSprite->data1 = 2;
         gRegionMap->cursorSprite->data2 = (IndexOfSpritePaletteTag(paletteTag) << 4) + 0x101;
-        gRegionMap->cursorSprite->data3 = 1;
+        gRegionMap->cursorSprite->data3 = TRUE;
     }
 }
+
+static void sub_8124238(void)
+{
+    if (gRegionMap->cursorSprite != NULL)
+    {
+        DestroySprite(gRegionMap->cursorSprite);
+        FreeSpriteTilesByTag(gRegionMap->cursorTileTag);
+        FreeSpritePaletteByTag(gRegionMap->cursorPaletteTag);
+    }
+}
+
+void sub_8124268(void)
+{
+    gRegionMap->cursorSprite->data3 = TRUE;
+}
+
+void sub_8124278(void)
+{
+    gRegionMap->cursorSprite->data3 = FALSE;
+}