diff --git a/asm/field_map_obj.s b/asm/field_map_obj.s
index 596107f530..9910d3f428 100755
--- a/asm/field_map_obj.s
+++ b/asm/field_map_obj.s
@@ -5,132 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8091F94
-sub_8091F94: @ 8091F94
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	sub sp, 0x4
-	adds r4, r0, 0
-	adds r7, r1, 0
-	mov r8, r3
-	lsls r2, 24
-	lsrs r5, r2, 24
-	adds r6, r5, 0
-	bl FieldObjectIsFarawayIslandMew
-	lsls r0, 24
-	cmp r0, 0
-	beq _08091FFC
-	bl sub_81D427C
-	adds r5, r0, 0
-	cmp r5, 0
-	bne _08092012
-	adds r5, r6, 0
-	ldr r1, =gUnknown_085055CD
-	ldrb r0, [r4, 0x6]
-	adds r0, r1
-	ldrb r0, [r0]
-	adds r1, r4, 0
-	adds r1, 0x21
-	ldrb r1, [r1]
-	adds r2, r5, 0
-	bl state_to_direction
-	adds r5, r0, 0
-	mov r3, sp
-	adds r3, 0x2
-	adds r0, r4, 0
-	adds r1, r5, 0
-	mov r2, sp
-	bl FieldObjectMoveDestCoords
-	adds r0, r5, 0
-	bl GetFaceDirectionAnimId
-	adds r2, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	adds r0, r4, 0
-	adds r1, r7, 0
-	bl FieldObjectSetRegularAnim
-	b _08092084
-	.pool
-_08091FFC:
-	ldr r1, =gUnknown_085055CD
-	ldrb r0, [r4, 0x6]
-	adds r0, r1
-	ldrb r0, [r0]
-	adds r1, r4, 0
-	adds r1, 0x21
-	ldrb r1, [r1]
-	adds r2, r5, 0
-	bl state_to_direction
-	adds r5, r0, 0
-_08092012:
-	mov r6, sp
-	adds r6, 0x2
-	adds r0, r4, 0
-	adds r1, r5, 0
-	mov r2, sp
-	adds r3, r6, 0
-	bl FieldObjectMoveDestCoords
-	adds r0, r5, 0
-	bl GetGoSpeed0AnimId
-	adds r2, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	adds r0, r4, 0
-	adds r1, r7, 0
-	bl FieldObjectSetRegularAnim
-	mov r0, sp
-	movs r2, 0
-	ldrsh r1, [r0, r2]
-	movs r0, 0
-	ldrsh r2, [r6, r0]
-	adds r0, r4, 0
-	adds r3, r5, 0
-	bl npc_block_way
-	lsls r0, 24
-	cmp r0, 0
-	bne _08092070
-	mov r1, r8
-	cmp r1, 0
-	beq _08092084
-	mov r0, sp
-	movs r2, 0
-	ldrsh r0, [r0, r2]
-	movs r2, 0
-	ldrsh r1, [r6, r2]
-	bl MapGridGetMetatileBehaviorAt
-	lsls r0, 24
-	lsrs r0, 24
-	bl _call_via_r8
-	lsls r0, 24
-	cmp r0, 0
-	bne _08092084
-_08092070:
-	adds r0, r5, 0
-	bl GetFaceDirectionAnimId
-	adds r2, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	adds r0, r4, 0
-	adds r1, r7, 0
-	bl FieldObjectSetRegularAnim
-_08092084:
-	ldrb r0, [r4]
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r4]
-	movs r0, 0x2
-	strh r0, [r7, 0x30]
-	movs r0, 0x1
-	add sp, 0x4
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_8091F94
-
 	thumb_func_start sub_80920A4
 sub_80920A4: @ 80920A4
 	push {r4-r7,lr}
diff --git a/include/data3.h b/include/data3.h
index f5efab3b78..2b5cc1bc56 100755
--- a/include/data3.h
+++ b/include/data3.h
@@ -33,7 +33,7 @@ extern const u8 gUnknown_0850D898[4];
 extern const u8 gUnknown_0850D8AC[5];
 extern const u8 gUnknown_0850D8C4[5];
 extern const u8 gUnknown_0850D8E8[4];
-extern bool8 (*const gUnknown_0850DA64[])(struct MapObject *, struct Sprite *, u8, u8);
+extern bool8 (*const gUnknown_0850DA64[])(struct MapObject *, struct Sprite *, u8, bool8(u8));
 
 
 extern const u8 gUnknown_0850DBA0[5];
diff --git a/include/field_map_obj.h b/include/field_map_obj.h
index db1ed233f9..536d9d1a45 100755
--- a/include/field_map_obj.h
+++ b/include/field_map_obj.h
@@ -64,6 +64,7 @@ void sub_808F254(u8, u8, u8);
 void FieldObjectStep(struct MapObject *, struct Sprite *, bool8(struct MapObject *, struct Sprite *));
 u8 GetOppositeDirection(u8);
 u8 GetStepInPlaceDelay16AnimId(u8);
+u8 npc_block_way(struct MapObject *, s16, s16, u32);
 
 // Exported data declarations
 
diff --git a/include/fieldmap.h b/include/fieldmap.h
new file mode 100644
index 0000000000..7057fe8894
--- /dev/null
+++ b/include/fieldmap.h
@@ -0,0 +1,15 @@
+//
+// Created by scott on 9/16/2017.
+//
+
+#ifndef POKEEMERALD_FIELDMAP_H
+#define POKEEMERALD_FIELDMAP_H
+
+// Exported type declarations
+
+// Exported RAM declarations
+
+// Exported ROM declarations
+u8 MapGridGetMetatileBehaviorAt(s16, s16);
+
+#endif //POKEEMERALD_FIELDMAP_H
diff --git a/include/rom4.h b/include/rom4.h
index 0c7b873530..78dca24c4d 100644
--- a/include/rom4.h
+++ b/include/rom4.h
@@ -26,5 +26,6 @@ extern struct LinkPlayerMapObject gLinkPlayerMapObjects[4];
 
 void strange_npc_table_clear(void);
 const struct MapHeader *get_mapheader_by_bank_and_number(u8, u8);
+void FieldObjectMoveDestCoords(struct MapObject *, u32, s16 *, s16 *);
 
 #endif //POKEEMERALD_ROM4_H
diff --git a/include/rom_81BE66C.h b/include/rom_81BE66C.h
index d92c500d69..e4e39fb08f 100644
--- a/include/rom_81BE66C.h
+++ b/include/rom_81BE66C.h
@@ -6,5 +6,7 @@
 #define POKEEMERALD_ROM_81BE66C_H
 
 bool32 InTrainerHill(void);
+bool8 FieldObjectIsFarawayIslandMew(struct MapObject *);
+u32 sub_81D427C(void);
 
 #endif //POKEEMERALD_ROM_81BE66C_H
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 77c2a8068e..cdf4006de7 100755
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -10,6 +10,7 @@
 #include "berry.h"
 #include "palette.h"
 #include "field_player_avatar.h"
+#include "fieldmap.h"
 #include "event_data.h"
 #include "rom_818CFC8.h"
 #include "rom_81BE66C.h"
@@ -95,12 +96,12 @@ static bool8 FieldObjectDoesZCoordMatch(struct MapObject *, u8);
 void npc_reset(struct MapObject *, struct Sprite *);
 void FieldObjectSetRegularAnim(struct MapObject *, struct Sprite *, u8);
 u8 GetFaceDirectionAnimId(u32);
+u8 GetGoSpeed0AnimId(u32);
 bool8 FieldObjectExecRegularAnim(struct MapObject *, struct Sprite *);
 void SetFieldObjectStepTimer(struct Sprite *, s16);
 bool8 RunFieldObjectStepTimer(struct Sprite *);
 bool8 npc_block_way__next_tile(struct MapObject *, u8);
-u8 GetGoSpeed0AnimId(u8);
-u32 state_to_direction(u8, u8, u8);
+u32 state_to_direction(u8, u8, u32);
 void DoGroundEffects_OnSpawn(struct MapObject *, struct Sprite *);
 void sub_80964E8(struct MapObject *, struct Sprite *);
 bool8 FieldObjectIsSpecialAnimActive(struct MapObject *);
@@ -3176,7 +3177,7 @@ bool8 sub_8091EC0(struct MapObject *mapObject, struct Sprite *sprite)
     {
         return FALSE;
     }
-    return gUnknown_0850DA64[player_get_x22()](mapObject, sprite, player_get_direction_upper_nybble(), 0);
+    return gUnknown_0850DA64[player_get_x22()](mapObject, sprite, player_get_direction_upper_nybble(), NULL);
 }
 
 bool8 sub_8091F20(struct MapObject *mapObject, struct Sprite *sprite)
@@ -3189,12 +3190,12 @@ bool8 sub_8091F20(struct MapObject *mapObject, struct Sprite *sprite)
     return FALSE;
 }
 
-bool8 sub_8091F48(struct MapObject *mapObject, struct Sprite *sprite, u8 playerDirection, u8 a3)
+bool8 sub_8091F48(struct MapObject *mapObject, struct Sprite *sprite, u8 playerDirection, bool8 tileCB(u8))
 {
     return FALSE;
 }
 
-bool8 sub_8091F4C(struct MapObject *mapObject, struct Sprite *sprite, u8 playerDirection, u8 a3)
+bool8 sub_8091F4C(struct MapObject *mapObject, struct Sprite *sprite, u8 playerDirection, bool8 tileCB(u8))
 {
     FieldObjectSetRegularAnim(mapObject, sprite, GetFaceDirectionAnimId(state_to_direction(gUnknown_085055CD[mapObject->animPattern], mapObject->mapobj_unk_21, playerDirection)));
     mapObject->mapobj_bit_1 = TRUE;
@@ -3202,6 +3203,42 @@ bool8 sub_8091F4C(struct MapObject *mapObject, struct Sprite *sprite, u8 playerD
     return TRUE;
 }
 
+bool8 sub_8091F94(struct MapObject *mapObject, struct Sprite *sprite, u8 playerDirection, bool8 tileCB(u8))
+{
+    u32 direction;
+    s16 x;
+    s16 y;
+
+    direction = playerDirection;
+    if (FieldObjectIsFarawayIslandMew(mapObject))
+    {
+        direction = sub_81D427C();
+        if (direction == 0)
+        {
+            direction = playerDirection;
+            direction = state_to_direction(gUnknown_085055CD[mapObject->animPattern], mapObject->mapobj_unk_21, direction);
+            FieldObjectMoveDestCoords(mapObject, direction, &x, &y);
+            FieldObjectSetRegularAnim(mapObject, sprite, GetFaceDirectionAnimId(direction));
+            mapObject->mapobj_bit_1 = TRUE;
+            sprite->data1 = 2;
+            return TRUE;
+        }
+    }
+    else
+    {
+        direction = state_to_direction(gUnknown_085055CD[mapObject->animPattern], mapObject->mapobj_unk_21, direction);
+    }
+    FieldObjectMoveDestCoords(mapObject, direction, &x, &y);
+    FieldObjectSetRegularAnim(mapObject, sprite, GetGoSpeed0AnimId(direction));
+    if (npc_block_way(mapObject, x, y, direction) || (tileCB != NULL && !tileCB(MapGridGetMetatileBehaviorAt(x, y))))
+    {
+        FieldObjectSetRegularAnim(mapObject, sprite, GetFaceDirectionAnimId(direction));
+    }
+    mapObject->mapobj_bit_1 = TRUE;
+    sprite->data1 = 2;
+    return TRUE;
+}
+
 asm(".section .text.get_face_direction_anim_id");
 
 void FieldObjectClearAnimIfSpecialAnimActive(struct MapObject *);