From edd5c81a8ee249625dbd015c80e0e0442776bde9 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sat, 16 Sep 2017 18:24:58 -0400
Subject: [PATCH] sub_8092AF8

---
 asm/field_map_obj.s | 34 ----------------------------------
 src/field_map_obj.c | 21 +++++++++++++++++++++
 2 files changed, 21 insertions(+), 34 deletions(-)

diff --git a/asm/field_map_obj.s b/asm/field_map_obj.s
index 1c4b5a145..9a8294ab2 100755
--- a/asm/field_map_obj.s
+++ b/asm/field_map_obj.s
@@ -5,40 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8092AF8
-sub_8092AF8: @ 8092AF8
-	push {lr}
-	lsls r1, 16
-	lsrs r1, 16
-	lsls r3, 16
-	lsrs r3, 16
-	lsls r0, 16
-	asrs r0, 16
-	lsls r2, 16
-	asrs r2, 16
-	cmp r0, r2
-	ble _08092B12
-	movs r0, 0x3
-	b _08092B28
-_08092B12:
-	cmp r0, r2
-	bge _08092B1A
-	movs r0, 0x4
-	b _08092B28
-_08092B1A:
-	lsls r1, 16
-	lsls r0, r3, 16
-	cmp r1, r0
-	bgt _08092B26
-	movs r0, 0x1
-	b _08092B28
-_08092B26:
-	movs r0, 0x2
-_08092B28:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8092AF8
-
 	thumb_func_start npc_set_running_behaviour_etc
 npc_set_running_behaviour_etc: @ 8092B2C
 	push {r4,lr}
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index f47639a9e..2987c09ee 100755
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -3539,6 +3539,8 @@ dirn2anim(sub_8092A1C, gUnknown_0850DB38)
 dirn2anim(sub_8092A2C, gUnknown_0850DB41)
 dirn2anim(get_run_image_anim_num, gUnknown_0850DB4A)
 
+// file boundary?
+
 struct UnkStruct_085094AC {
     const union AnimCmd *const *anims;
     u8 animPos[4];
@@ -3605,6 +3607,25 @@ void obj_npc_animation_step(struct MapObject *mapObject, struct Sprite *sprite,
     }
 }
 
+// file boundary?
+
+u8 sub_8092AF8(s16 x1, s16 y1, s16 x2, s16 y2)
+{
+    if (x1 > x2)
+    {
+        return DIR_WEST;
+    }
+    if (x1 < x2)
+    {
+        return DIR_EAST;
+    }
+    if (y1 > y2)
+    {
+        return DIR_NORTH;
+    }
+    return DIR_SOUTH;
+}
+
 asm(".section .text.get_face_direction_anim_id");
 
 void FieldObjectClearAnimIfSpecialAnimActive(struct MapObject *);