diff options
Diffstat (limited to 'engine')
| -rw-r--r-- | engine/landmarks.asm | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/engine/landmarks.asm b/engine/landmarks.asm index 1d050da77..28c0d60a9 100644 --- a/engine/landmarks.asm +++ b/engine/landmarks.asm @@ -255,3 +255,40 @@ UndergroundName: db "UNDERGROUND@" BattleTowerName: db "BATTLE", $1f, "TOWER@" SpecialMapName: db "SPECIAL@" + +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 + |