split bank 1 into files

engine/overworld/set_blackout_map.asm

@@ -0,0 +1,29 @@
+SetLastBlackoutMap:
+; Set the map to return to when
+; blacking out or using Teleport or Dig.
+; Safari rest houses don't count.
+
+	push hl
+	ld hl, SafariZoneRestHouses
+	ld a, [wCurMap]
+	ld b, a
+.loop
+	ld a, [hli]
+	cp -1
+	jr z, .notresthouse
+	cp b
+	jr nz, .loop
+	jr .done
+
+.notresthouse
+	ld a, [wLastMap]
+	ld [wLastBlackoutMap], a
+.done
+	pop hl
+	ret
+
+SafariZoneRestHouses:
+	db SAFARI_ZONE_REST_HOUSE_2
+	db SAFARI_ZONE_REST_HOUSE_3
+	db SAFARI_ZONE_REST_HOUSE_4
+	db -1