From aad92e4341bac0f5e18c8075d17de8bc21f066c6 Mon Sep 17 00:00:00 2001
From: Tal Hayon <talhayon1@gmail.com>
Date: Mon, 9 May 2022 02:05:09 +0300
Subject: [PATCH] Match sub_080189EC

---
 asm/kinstone.s | 52 --------------------------------------------------
 src/kinstone.c | 23 ++++++++++++++++++++++
 2 files changed, 23 insertions(+), 52 deletions(-)

diff --git a/asm/kinstone.s b/asm/kinstone.s
index 259ed9db..8a0bbd2c 100644
--- a/asm/kinstone.s
+++ b/asm/kinstone.s
@@ -655,55 +655,3 @@ _080189E4:
 	pop {r4, r5, pc}
 	.align 2, 0
 _080189E8: .4byte gUnk_080FEE38
-
-	thumb_func_start sub_080189EC
-sub_080189EC: @ 0x080189EC
-	push {r4, r5, r6, lr}
-	lsls r1, r0, #2
-	adds r1, r1, r0
-	lsls r1, r1, #2
-	ldr r0, _08018A48 @ =gUnk_080FE320
-	adds r1, r1, r0
-	ldrh r0, [r1, #8]
-	lsrs r6, r0, #4
-	movs r2, #0x3f
-	ands r6, r2
-	ldrh r0, [r1, #0xa]
-	lsrs r0, r0, #4
-	ands r0, r2
-	lsls r0, r0, #6
-	orrs r6, r0
-	subs r6, #0x42
-	movs r5, #0
-_08018A0E:
-	ldr r1, _08018A4C @ =0x000001DF
-	adds r0, r5, r1
-	adds r1, r6, r5
-	movs r2, #2
-	bl SetTileType
-	adds r5, #1
-	cmp r5, #3
-	bls _08018A0E
-	adds r6, #0x40
-	movs r5, #0
-_08018A24:
-	ldr r1, _08018A50 @ =0x000001E3
-	adds r0, r5, r1
-	adds r4, r6, r5
-	adds r1, r4, #0
-	movs r2, #2
-	bl SetTileType
-	ldr r1, _08018A54 @ =0x000001DB
-	adds r0, r5, r1
-	adds r1, r4, #0
-	movs r2, #1
-	bl SetTileType
-	adds r5, #1
-	cmp r5, #3
-	bls _08018A24
-	pop {r4, r5, r6, pc}
-	.align 2, 0
-_08018A48: .4byte gUnk_080FE320
-_08018A4C: .4byte 0x000001DF
-_08018A50: .4byte 0x000001E3
-_08018A54: .4byte 0x000001DB
diff --git a/src/kinstone.c b/src/kinstone.c
index 29b35f26..16f488c9 100644
--- a/src/kinstone.c
+++ b/src/kinstone.c
@@ -4,6 +4,29 @@
 #include "common.h"
 #include "flags.h"
 
+void sub_080189EC(int param_1) {
+    u32 i;
+    int iVar1;
+    int tilePosition;
+    struct_080FE320* ptr;
+
+    ptr = &gUnk_080FE320[param_1];
+
+    tilePosition = (ptr->x >> 4) & 0x3f;
+    tilePosition |= ((ptr->y >> 4) & 0x3f) << 6;
+    tilePosition -= 0x42;
+
+    for (i = 0; i < 4; i++) {
+        SetTileType(i + 0x1df, tilePosition + i, 2);
+    }
+
+    tilePosition += 0x40;
+    for (i = 0; i < 4; i++) {
+        SetTileType(i + 0x1e3, tilePosition + i, 2);
+        SetTileType(i + 0x1db, tilePosition + i, 1);
+    }
+}
+
 void sub_08018A58(int param_1) {
     u32 i;
     int iVar2;