diff --git a/asm/field_map_obj.s b/asm/field_map_obj.s
index 7aa32c862..25ec2cc28 100755
--- a/asm/field_map_obj.s
+++ b/asm/field_map_obj.s
@@ -5,39 +5,6 @@
 
 	.text
 
-	thumb_func_start npc_obj_ministep_stop_on_arrival
-@ bool8 npc_obj_ministep_stop_on_arrival(struct npc_state *fieldObject, struct obj *object)
-npc_obj_ministep_stop_on_arrival: @ 8093AB8
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	adds r5, r1, 0
-	adds r0, r5, 0
-	bl obj_npc_ministep
-	lsls r0, 24
-	cmp r0, 0
-	bne _08093ACE
-	movs r0, 0
-	b _08093AEA
-_08093ACE:
-	adds r0, r4, 0
-	bl npc_coords_shift_still
-	ldrb r0, [r4]
-	movs r1, 0x8
-	orrs r0, r1
-	strb r0, [r4]
-	adds r2, r5, 0
-	adds r2, 0x2C
-	ldrb r0, [r2]
-	movs r1, 0x40
-	orrs r0, r1
-	strb r0, [r2]
-	movs r0, 0x1
-_08093AEA:
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	thumb_func_end npc_obj_ministep_stop_on_arrival
-
 	thumb_func_start sub_8093AF0
 @ void sub_8093AF0(struct npc_state *fieldObject, struct obj *object, u8 direction)
 sub_8093AF0: @ 8093AF0
diff --git a/include/field_ground_effect.h b/include/field_ground_effect.h
index b7242ee7c..63b67ceaf 100644
--- a/include/field_ground_effect.h
+++ b/include/field_ground_effect.h
@@ -14,5 +14,9 @@ void SetObjectSubpriorityByZCoord(u8, struct Sprite *, u8);
 void InitObjectPriorityByZCoord(struct Sprite *, u8);
 bool8 IsZCoordMismatchAt(u8, s16, s16);
 bool8 AreZCoordsCompatible(u8, u8);
+void FieldObjectUpdateSubpriority(struct MapObject *, struct Sprite *);
+void DoGroundEffects_OnSpawn(struct MapObject *, struct Sprite *);
+void DoGroundEffects_OnBeginStep(struct MapObject *, struct Sprite *);
+void DoGroundEffects_OnFinishStep(struct MapObject *, struct Sprite *);
 
 #endif //GUARD_FIELD_GROUND_EFFECT_H
diff --git a/include/field_map_obj.h b/include/field_map_obj.h
index 23749c91a..40cc64054 100755
--- a/include/field_map_obj.h
+++ b/include/field_map_obj.h
@@ -39,6 +39,7 @@ void sub_8092FF0(s16, s16, s16 *, s16 *);
 u8 FieldObjectDirectionToImageAnimId(u8);
 void sub_80930E0(s16 *, s16 *, s16, s16);
 void FieldObjectClearAnim(struct MapObject *);
+void FieldObjectClearAnimIfSpecialAnimActive(struct MapObject *);
 void SpawnFieldObjectsInView(s16, s16);
 u8 sprite_new(u8, u8, s16, s16, u8, u8);
 u8 AddPseudoFieldObject(u16, void (*)(struct Sprite *), s16, s16, u8);
@@ -69,6 +70,7 @@ u8 GetStepInPlaceDelay16AnimId(u32);
 u8 GetStepInPlaceDelay32AnimId(u32);
 u8 npc_block_way(struct MapObject *, s16, s16, u32);
 void MoveCoords(u8, s16 *, s16 *);
+bool8 FieldObjectIsSpecialAnimActive(struct MapObject *);
 
 // Exported data declarations
 
diff --git a/include/map_obj_8097404.h b/include/map_obj_8097404.h
index afa7a3bae..e5e6fba70 100644
--- a/include/map_obj_8097404.h
+++ b/include/map_obj_8097404.h
@@ -15,5 +15,6 @@ void sub_8097AC8(struct Sprite *);
 void npc_sync_anim_pause_bits(struct MapObject *);
 void oamt_npc_ministep_reset(struct Sprite *, u8, u8);
 u8 sub_8097F78(struct MapObject *);
+bool8 obj_npc_ministep(struct Sprite *sprite);
 
 #endif //GUARD_MAP_OBJ_8097404_H
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 5e32d7330..cd840ba70 100755
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -112,21 +112,14 @@ bool8 FieldObjectExecRegularAnim(struct MapObject *, struct Sprite *);
 void SetFieldObjectStepTimer(struct Sprite *, s16);
 bool8 RunFieldObjectStepTimer(struct Sprite *);
 bool8 npc_block_way__next_tile(struct MapObject *, u8);
-u32 state_to_direction(u8, u32, u32);
-void DoGroundEffects_OnSpawn(struct MapObject *, struct Sprite *);
-void sub_80964E8(struct MapObject *, struct Sprite *);
-bool8 FieldObjectIsSpecialAnimActive(struct MapObject *);
-void FieldObjectExecSpecialAnim(struct MapObject *, struct Sprite *);
-void DoGroundEffects_OnBeginStep(struct MapObject *, struct Sprite *);
-void DoGroundEffects_OnFinishStep(struct MapObject *, struct Sprite *);
-void npc_obj_transfer_image_anim_pause_flag(struct MapObject *, struct Sprite *);
-void FieldObjectUpdateSubpriority(struct MapObject *, struct Sprite *);
+static u32 state_to_direction(u8, u32, u32);
+/*static*/ void sub_80964E8(struct MapObject *, struct Sprite *);
+static void FieldObjectExecSpecialAnim(struct MapObject *, struct Sprite *);
+/*static*/ void npc_obj_transfer_image_anim_pause_flag(struct MapObject *, struct Sprite *);
 
-bool8 IsCoordOutsideFieldObjectMovementRect(struct MapObject2 *fieldObject, s16 x, s16 y);
-bool8 IsMetatileDirectionallyImpassable(struct MapObject *, s16, s16, u8);
-bool8 CheckForCollisionBetweenFieldObjects(struct MapObject *, s16, s16);
-void FieldObjectClearAnimIfSpecialAnimActive(struct MapObject *);
-void FieldObjectClearAnim(struct MapObject *);
+static bool8 IsCoordOutsideFieldObjectMovementRect(struct MapObject2 *, s16, s16);
+static bool8 IsMetatileDirectionallyImpassable(struct MapObject *, s16, s16, u8);
+static bool8 CheckForCollisionBetweenFieldObjects(struct MapObject *, s16, s16);
 
 // ROM data
 
@@ -3708,7 +3701,7 @@ u8 sub_8092C8C(struct MapObject *mapObject, s16 x, s16 y, u8 direction)
     return retval;
 }
 
-bool8 IsCoordOutsideFieldObjectMovementRect(struct MapObject2 *mapObject, s16 x, s16 y)
+static bool8 IsCoordOutsideFieldObjectMovementRect(struct MapObject2 *mapObject, s16 x, s16 y)
 {
     s16 left;
     s16 right;
@@ -3736,7 +3729,7 @@ bool8 IsCoordOutsideFieldObjectMovementRect(struct MapObject2 *mapObject, s16 x,
     return FALSE;
 }
 
-bool8 IsMetatileDirectionallyImpassable(struct MapObject *mapObject, s16 x, s16 y, u8 direction)
+static bool8 IsMetatileDirectionallyImpassable(struct MapObject *mapObject, s16 x, s16 y, u8 direction)
 {
     if (gUnknown_0850DB5C[direction - 1](mapObject->mapobj_unk_1E) || gUnknown_0850DB6C[direction - 1](MapGridGetMetatileBehaviorAt(x, y)))
     {
@@ -3745,7 +3738,7 @@ bool8 IsMetatileDirectionallyImpassable(struct MapObject *mapObject, s16 x, s16
     return FALSE;
 }
 
-bool8 CheckForCollisionBetweenFieldObjects(struct MapObject *mapObject, s16 x, s16 y)
+static bool8 CheckForCollisionBetweenFieldObjects(struct MapObject *mapObject, s16 x, s16 y)
 {
     u8 i;
     struct MapObject *curObject;
@@ -4074,12 +4067,12 @@ u8 GetOppositeDirection(u8 direction)
     return directions[direction - 1];
 }
 
-u32 zffu_offset_calc(u8 a0, u8 a1)
+static u32 zffu_offset_calc(u8 a0, u8 a1)
 {
     return gUnknown_0850DC2F[a0 - 1][a1 - 1];
 }
 
-u32 state_to_direction(u8 a0, u32 a1, u32 a2)
+static u32 state_to_direction(u8 a0, u32 a1, u32 a2)
 {
     u32 zffuOffset;
     u8 a1_2;
@@ -4095,7 +4088,7 @@ u32 state_to_direction(u8 a0, u32 a1, u32 a2)
     return gUnknown_0850DC3F[a0 - 1][zffuOffset - 1];
 }
 
-void FieldObjectExecSpecialAnim(struct MapObject *mapObject, struct Sprite *sprite)
+static void FieldObjectExecSpecialAnim(struct MapObject *mapObject, struct Sprite *sprite)
 {
     if (gUnknown_0850DC50[mapObject->mapobj_unk_1C][sprite->data2](mapObject, sprite))
     {
@@ -4189,3 +4182,15 @@ void do_run_anim(struct MapObject *mapObject, struct Sprite *sprite, u8 directio
     npc_apply_direction(mapObject, sprite, direction, 1);
     npc_apply_anim_looping(mapObject, sprite, get_run_image_anim_num(mapObject->mapobj_unk_18));
 }
+
+bool8 npc_obj_ministep_stop_on_arrival(struct MapObject *mapObject, struct Sprite *sprite)
+{
+    if (obj_npc_ministep(sprite))
+    {
+        npc_coords_shift_still(mapObject);
+        mapObject->mapobj_bit_3 = TRUE;
+        sprite->animPaused = TRUE;
+        return TRUE;
+    }
+    return FALSE;
+}