pokecrystal/engine/landmarks.asm

GetLandmarkCoords: ; 0x1ca896
; Return coordinates (d, e) of landmark e.
	push hl
	ld l, e
	ld h, 0
	add hl, hl
	add hl, hl
	ld de, Landmarks
	add hl, de
	ld a, [hli]
	ld e, a
	ld d, [hl]
	pop hl
	ret
; 0x1ca8a5


GetLandmarkName:: ; 0x1ca8a5
; Copy the name of landmark e to StringBuffer1.
	push hl
	push de
	push bc

	ld l, e
	ld h, 0
	add hl, hl
	add hl, hl
	ld de, Landmarks + 2
	add hl, de
	ld a, [hli]
	ld h, [hl]
	ld l, a

	ld de, StringBuffer1
	ld c, 18
.copy
	ld a, [hli]
	ld [de], a
	inc de
	dec c
	jr nz, .copy

	pop bc
	pop de
	pop hl
	ret
; 0x1ca8c3


INCLUDE "data/landmarks.asm"


RegionCheck: ; 0x1caea1
; Checks if the player is in Kanto or Johto.
; If in Johto, returns 0 in e.
; If in Kanto, returns 1 in e.
	ld a, [MapGroup]
	ld b, a
	ld a, [MapNumber]
	ld c, a
	call GetWorldMapLocation
	cp FAST_SHIP ; S.S. Aqua
	jr z, .johto
	cp SPECIAL_MAP
	jr nz, .checkagain

; In a special map, get the backup map group / map id
	ld a, [BackupMapGroup]
	ld b, a
	ld a, [BackupMapNumber]
	ld c, a
	call GetWorldMapLocation

.checkagain
	cp KANTO_LANDMARK
	jr c, .johto

; Victory Road area is considered to be Johto.
	cp VICTORY_ROAD
	jr c, .kanto

.johto
	ld e, 0
	ret
.kanto
	ld e, 1
	ret