diff --git a/asm/field_map_obj.s b/asm/field_map_obj.s
index f59a3a7c9..600997c7f 100644
--- a/asm/field_map_obj.s
+++ b/asm/field_map_obj.s
@@ -5,105 +5,6 @@
 
 	.text
 
-	thumb_func_start SpawnFieldObject
-@ u8 SpawnFieldObject(struct FieldObjectTemplate *romNpc, u8 mapId, u8 mapGroupId, u16 movingCameraOffsetX, u16 movingCameraOffsetY)
-SpawnFieldObject: @ 808DB40
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	sub sp, 0x2C
-	mov r9, r0
-	adds r6, r1, 0
-	mov r8, r2
-	adds r4, r3, 0
-	ldr r5, [sp, 0x48]
-	lsls r6, 24
-	lsrs r6, 24
-	mov r0, r8
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	lsls r4, 16
-	lsrs r4, 16
-	lsls r5, 16
-	lsrs r5, 16
-	movs r0, 0
-	str r0, [sp, 0x20]
-	mov r1, r9
-	ldrb r0, [r1, 0x1]
-	bl GetFieldObjectGraphicsInfo
-	adds r7, r0, 0
-	add r2, sp, 0x20
-	mov r0, r9
-	add r1, sp, 0x8
-	bl MakeObjectTemplateFromFieldObjectTemplate
-	ldrh r3, [r7, 0x6]
-	ldr r2, =0xffff0000
-	add r1, sp, 0x24
-	ldr r0, [r1, 0x4]
-	ands r0, r2
-	orrs r0, r3
-	str r0, [r1, 0x4]
-	str r1, [sp, 0x14]
-	lsls r4, 16
-	asrs r4, 16
-	str r4, [sp]
-	lsls r5, 16
-	asrs r5, 16
-	str r5, [sp, 0x4]
-	mov r0, r9
-	add r1, sp, 0x8
-	adds r2, r6, 0
-	mov r3, r8
-	bl SpawnFieldObjectInternal
-	lsls r0, 24
-	lsrs r2, r0, 24
-	adds r5, r2, 0
-	cmp r2, 0x10
-	bne _0808DBBC
-	movs r0, 0x10
-	b _0808DBF2
-	.pool
-_0808DBBC:
-	ldr r4, =gSprites
-	ldr r1, =gMapObjects
-	lsls r0, r2, 3
-	adds r0, r2
-	lsls r0, 2
-	adds r3, r0, r1
-	ldrb r1, [r3, 0x4]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r1, r4, 0
-	adds r1, 0xC
-	adds r0, r1
-	ldr r1, [r7, 0x1C]
-	str r1, [r0]
-	ldr r2, [sp, 0x20]
-	cmp r2, 0
-	beq _0808DBF0
-	ldrb r1, [r3, 0x4]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r4
-	adds r1, r2, 0
-	bl SetSubspriteTables
-_0808DBF0:
-	adds r0, r5, 0
-_0808DBF2:
-	add sp, 0x2C
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end SpawnFieldObject
-
 	thumb_func_start SpawnSpecialFieldObject
 @ u8 SpawnSpecialFieldObject(struct FieldObjectTemplate *romFieldObject)
 SpawnSpecialFieldObject: @ 808DC08
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index a3fb1a5d3..8b78a54a1 100644
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -23,8 +23,9 @@ static bool8 GetAvailableFieldObjectSlot(u16, u8, u8, u8 *);
 /*static*/ void FieldObjectHandleDynamicGraphicsId(struct MapObject *);
 static void RemoveFieldObjectInternal (struct MapObject *);
 /*static*/ u16 GetFieldObjectFlagIdByFieldObjectId(u8);
-/*static*/ struct MapObjectGraphicsInfo *GetFieldObjectGraphicsInfo(u8);
+/*static*/ const struct MapObjectGraphicsInfo *GetFieldObjectGraphicsInfo(u8);
 void sub_8096518(struct MapObject *, struct Sprite *);
+/*static*/ void MakeObjectTemplateFromFieldObjectTemplate(struct MapObjectTemplate *, struct SpriteTemplate *, const struct SubspriteTable **);
 
 // ROM data
 
@@ -461,7 +462,7 @@ void unref_sub_808D958(void)
 u8 SpawnFieldObjectInternal(struct MapObjectTemplate *mapObjectTemplate, struct SpriteTemplate *spriteTemplate, u8 mapNum, u8 mapGroup, s16 cameraX, s16 cameraY)
 {
     struct MapObject *mapObject;
-    struct MapObjectGraphicsInfo *graphicsInfo;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
     struct Sprite *sprite;
     u8 mapObjectId;
     u8 paletteSlot;
@@ -518,3 +519,29 @@ u8 SpawnFieldObjectInternal(struct MapObjectTemplate *mapObjectTemplate, struct
     sub_8096518(mapObject, sprite);
     return mapObjectId;
 }
+
+u8 SpawnFieldObject(struct MapObjectTemplate *mapObjectTemplate, u8 mapNum, u8 mapGroup, s16 cameraX, s16 cameraY)
+{
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+    struct SpriteTemplate spriteTemplate;
+    const struct SubspriteTable *subspriteTable;
+    struct SpriteFrameImage spriteFrameImage;
+    u8 mapObjectId;
+
+    subspriteTable = NULL;
+    graphicsInfo = GetFieldObjectGraphicsInfo(mapObjectTemplate->graphicsId);
+    MakeObjectTemplateFromFieldObjectTemplate(mapObjectTemplate, &spriteTemplate, &subspriteTable);
+    spriteFrameImage.size = graphicsInfo->size;
+    spriteTemplate.images = &spriteFrameImage;
+    mapObjectId = SpawnFieldObjectInternal(mapObjectTemplate, &spriteTemplate, mapNum, mapGroup, cameraX, cameraY);
+    if (mapObjectId == ARRAY_COUNT(gMapObjects))
+    {
+        return ARRAY_COUNT(gMapObjects);
+    }
+    gSprites[gMapObjects[mapObjectId].spriteId].images = graphicsInfo->images;
+    if (subspriteTable != NULL)
+    {
+        SetSubspriteTables(&gSprites[gMapObjects[mapObjectId].spriteId], subspriteTable);
+    }
+    return mapObjectId;
+}