jep-hack/home/region.asm
Llinos Evans 4432dd4d2f Sevii Region groundwork
This adds the baseline infrastructure to account for the Sevii Islands, while also fixing a couple of bugs. Zeta, please read the commit carefully!

Only real issue I noticed was that scrolling on the town map is infinite in all three new regions, implying there's something in `pokegear.asm` I haven't accounted for.

I've also ret'd the ezchat order and gen1 orders out of existence to reduce the sheer amount of 8-bit warnings. This abolishes gen1 compatibility (though this was already a bit fucked) in exchange for actually being able to debug things in a reasonable timeframe.
2024-08-06 15:30:37 +01:00

51 lines
659 B
NASM

IsInJohto::
; Return 0 if the player is in Johto, and 1 in Kanto.
ld a, [wMapGroup]
ld b, a
ld a, [wMapNumber]
ld c, a
call GetWorldMapLocation
cp LANDMARK_FAST_SHIP
jr z, .Johto
cp LANDMARK_SPECIAL
jr nz, .CheckRegion
ld a, [wBackupMapGroup]
ld b, a
ld a, [wBackupMapNumber]
ld c, a
call GetWorldMapLocation
.CheckRegion:
cp NIHON_LANDMARK
jr c, .Nihon
cp SEVII_LANDMARK_1
jr c, .sevii1
cp SEVII_LANDMARK_2
jr c, .sevii2
cp KANTO_LANDMARK
jr nc, .Kanto
.Johto:
xor a ; JOHTO_REGION
ret
.Kanto:
ld a, KANTO_REGION
ret
.sevii1:
ld a, SEVII_REGION_1
ret
.sevii2:
ld a, SEVII_REGION_2
ret
.Nihon:
ld a, NIHON_REGION
ret