ref: 62e137f6cedeeebb8457fdb710ea725f73ded49f
dir: /engine/overworld/special_warps.asm/
SpecialWarpIn:: call LoadSpecialWarpData predef LoadTilesetHeader ld hl, wd732 bit 2, [hl] ; dungeon warp or fly warp? res 2, [hl] jr z, .next ; if dungeon warp or fly warp ld a, [wDestinationMap] jr .next2 .next bit 1, [hl] jr z, .next3 call EmptyFunc .next3 ld a, 0 .next2 ld b, a ld a, [wd72d] and a jr nz, .next4 ld a, b .next4 ld hl, wd732 bit 4, [hl] ; dungeon warp? ret nz ; if not dungeon warp ld [wLastMap], a ret ; gets the map ID, tile block map view pointer, tileset, and coordinates LoadSpecialWarpData: ld a, [wd72d] cp TRADE_CENTER jr nz, .notTradeCenter ld hl, TradeCenterSpec1 ld a, [hSerialConnectionStatus] cp USING_INTERNAL_CLOCK ; which gameboy is clocking determines who is on the left and who is on the right jr z, .copyWarpData ld hl, TradeCenterSpec2 jr .copyWarpData .notTradeCenter cp COLOSSEUM jr nz, .notColosseum ld hl, ColosseumSpec1 ld a, [hSerialConnectionStatus] cp USING_INTERNAL_CLOCK jr z, .copyWarpData ld hl, ColosseumSpec2 jr .copyWarpData .notColosseum ld a, [wd732] bit 1, a jr nz, .notFirstMap bit 2, a jr nz, .notFirstMap ld hl, FirstMapSpec .copyWarpData ld de, wCurMap ld c, $7 .copyWarpDataLoop ld a, [hli] ld [de], a inc de dec c jr nz, .copyWarpDataLoop ld a, [hli] ld [wCurMapTileset], a xor a jr .done .notFirstMap ld a, [wLastMap] ; this value is overwritten before it's ever read ld hl, wd732 bit 4, [hl] ; used dungeon warp (jumped down hole/waterfall)? jr nz, .usedDunegonWarp bit 6, [hl] ; return to last pokemon center (or player's house)? res 6, [hl] jr z, .otherDestination ; return to last pokemon center or player's house ld a, [wLastBlackoutMap] jr .usedFlyWarp .usedDunegonWarp ld hl, wd72d res 4, [hl] ld a, [wDungeonWarpDestinationMap] ld b, a ld [wCurMap], a ld a, [wWhichDungeonWarp] ld c, a ld hl, DungeonWarpList ld de, 0 ld a, 6 ld [wDungeonWarpDataEntrySize], a .dungeonWarpListLoop ld a, [hli] cp b jr z, .matchedDungeonWarpDestinationMap inc hl jr .nextDungeonWarp .matchedDungeonWarpDestinationMap ld a, [hli] cp c jr z, .matchedDungeonWarpID .nextDungeonWarp ld a, [wDungeonWarpDataEntrySize] add e ld e, a jr .dungeonWarpListLoop .matchedDungeonWarpID ld hl, DungeonWarpData add hl, de jr .copyWarpData2 .otherDestination ld a, [wDestinationMap] .usedFlyWarp ld b, a ld [wCurMap], a ld hl, FlyWarpDataPtr .flyWarpDataPtrLoop ld a, [hli] inc hl cp b jr z, .foundFlyWarpMatch inc hl inc hl jr .flyWarpDataPtrLoop .foundFlyWarpMatch ld a, [hli] ld h, [hl] ld l, a .copyWarpData2 ld de, wCurrentTileBlockMapViewPointer ld c, $6 .copyWarpDataLoop2 ld a, [hli] ld [de], a inc de dec c jr nz, .copyWarpDataLoop2 xor a ; OVERWORLD ld [wCurMapTileset], a .done ld [wYOffsetSinceLastSpecialWarp], a ld [wXOffsetSinceLastSpecialWarp], a ld a, $ff ; the player's coordinates have already been updated using a special warp, so don't use any of the normal warps ld [wDestinationWarpID], a ret INCLUDE "data/maps/special_warps.asm"