ref: 865d37e02ad6af386e7f596659ebec12266be3ce
dir: /engine/overworld/player_state.asm/
; only used for setting bit 2 of wd736 upon entering a new map IsPlayerStandingOnWarp:: ld a, [wNumberOfWarps] and a ret z ld c, a ld hl, wWarpEntries .loop ld a, [wYCoord] cp [hl] jr nz, .nextWarp1 inc hl ld a, [wXCoord] cp [hl] jr nz, .nextWarp2 inc hl ld a, [hli] ; target warp ld [wDestinationWarpID], a ld a, [hl] ; target map ldh [hWarpDestinationMap], a ld hl, wd736 set 2, [hl] ; standing on warp flag ret .nextWarp1 inc hl .nextWarp2 inc hl inc hl inc hl dec c jr nz, .loop ret CheckForceBikeOrSurf:: ld hl, wd732 bit 5, [hl] ret nz ld hl, ForcedBikeOrSurfMaps ld a, [wYCoord] ld b, a ld a, [wXCoord] ld c, a ld a, [wCurMap] ld d, a .loop ld a, [hli] cp $ff ret z ;if we reach FF then it's not part of the list cp d ;compare to current map jr nz, .incorrectMap ld a, [hli] cp b ;compare y-coord jr nz, .incorrectY ld a, [hli] cp c ;compare x-coord jr nz, .loop ; incorrect x-coord, check next item ld a, [wCurMap] cp SEAFOAM_ISLANDS_B3F ld a, $2 ld [wSeafoamIslandsB3FCurScript], a jr z, .forceSurfing ld a, [wCurMap] cp SEAFOAM_ISLANDS_B4F ld a, $2 ld [wSeafoamIslandsB4FCurScript], a jr z, .forceSurfing ;force bike riding ld hl, wd732 set 5, [hl] ld a, $1 ld [wWalkBikeSurfState], a ld [wWalkBikeSurfStateCopy], a jp ForceBikeOrSurf .incorrectMap inc hl .incorrectY inc hl jr .loop .forceSurfing ld a, $2 ld [wWalkBikeSurfState], a ld [wWalkBikeSurfStateCopy], a jp ForceBikeOrSurf INCLUDE "data/maps/force_bike_surf.asm" IsPlayerFacingEdgeOfMap:: push hl push de push bc ld a, [wSpritePlayerStateData1FacingDirection] srl a ld c, a ld b, $0 ld hl, .functionPointerTable add hl, bc ld a, [hli] ld h, [hl] ld l, a ld a, [wYCoord] ld b, a ld a, [wXCoord] ld c, a ld de, .asm_c41e push de jp hl .asm_c41e pop bc pop de pop hl ret .functionPointerTable dw .facingDown dw .facingUp dw .facingLeft dw .facingRight .facingDown ld a, [wCurMapHeight] add a dec a cp b jr z, .setCarry jr .resetCarry .facingUp ld a, b and a jr z, .setCarry jr .resetCarry .facingLeft ld a, c and a jr z, .setCarry jr .resetCarry .facingRight ld a, [wCurMapWidth] add a dec a cp c jr z, .setCarry jr .resetCarry .resetCarry and a ret .setCarry scf ret IsWarpTileInFrontOfPlayer:: push hl push de push bc call _GetTileAndCoordsInFrontOfPlayer ld a, [wCurMap] cp SS_ANNE_BOW jr z, IsSSAnneBowWarpTileInFrontOfPlayer ld a, [wSpritePlayerStateData1FacingDirection] srl a ld c, a ld b, 0 ld hl, WarpTileListPointers add hl, bc ld a, [hli] ld h, [hl] ld l, a ld a, [wTileInFrontOfPlayer] ld de, $1 call IsInArray .done pop bc pop de pop hl ret INCLUDE "data/tilesets/warp_carpet_tile_ids.asm" IsSSAnneBowWarpTileInFrontOfPlayer: ld a, [wTileInFrontOfPlayer] cp $15 jr nz, .notSSAnne5Warp scf jr IsWarpTileInFrontOfPlayer.done .notSSAnne5Warp and a jr IsWarpTileInFrontOfPlayer.done IsPlayerStandingOnDoorTileOrWarpTile:: push hl push de push bc farcall IsPlayerStandingOnDoorTile jr c, .done ld a, [wCurMapTileset] add a ld c, a ld b, $0 ld hl, WarpTileIDPointers add hl, bc ld a, [hli] ld h, [hl] ld l, a ld de, $1 lda_coord 8, 9 call IsInArray jr nc, .done ld hl, wd736 res 2, [hl] .done pop bc pop de pop hl ret INCLUDE "data/tilesets/warp_tile_ids.asm" PrintSafariZoneSteps:: ld a, [wCurMap] cp SAFARI_ZONE_EAST ret c cp CERULEAN_CAVE_2F ret nc hlcoord 0, 0 ld b, 3 ld c, 7 call TextBoxBorder hlcoord 1, 1 ld de, wSafariSteps lb bc, 2, 3 call PrintNumber hlcoord 4, 1 ld de, SafariSteps call PlaceString hlcoord 1, 3 ld de, SafariBallText call PlaceString ld a, [wNumSafariBalls] cp 10 jr nc, .asm_c56d hlcoord 5, 3 ld a, " " ld [hl], a .asm_c56d hlcoord 6, 3 ld de, wNumSafariBalls lb bc, 1, 2 jp PrintNumber SafariSteps: db "/500@" SafariBallText: db "BALL×× @" GetTileAndCoordsInFrontOfPlayer: call GetPredefRegisters _GetTileAndCoordsInFrontOfPlayer: ld a, [wYCoord] ld d, a ld a, [wXCoord] ld e, a ld a, [wSpritePlayerStateData1FacingDirection] and a ; cp SPRITE_FACING_DOWN jr nz, .notFacingDown ; facing down lda_coord 8, 11 inc d jr .storeTile .notFacingDown cp SPRITE_FACING_UP jr nz, .notFacingUp ; facing up lda_coord 8, 7 dec d jr .storeTile .notFacingUp cp SPRITE_FACING_LEFT jr nz, .notFacingLeft ; facing left lda_coord 6, 9 dec e jr .storeTile .notFacingLeft cp SPRITE_FACING_RIGHT jr nz, .storeTile ; facing right lda_coord 10, 9 inc e .storeTile ld c, a ld [wTileInFrontOfPlayer], a ret GetTileTwoStepsInFrontOfPlayer: xor a ldh [hPlayerFacing], a ld hl, wYCoord ld a, [hli] ld d, a ld e, [hl] ld a, [wSpritePlayerStateData1FacingDirection] and a ; cp SPRITE_FACING_DOWN jr nz, .notFacingDown ; facing down ld hl, hPlayerFacing set 0, [hl] lda_coord 8, 13 inc d jr .storeTile .notFacingDown cp SPRITE_FACING_UP jr nz, .notFacingUp ; facing up ld hl, hPlayerFacing set 1, [hl] lda_coord 8, 5 dec d jr .storeTile .notFacingUp cp SPRITE_FACING_LEFT jr nz, .notFacingLeft ; facing left ld hl, hPlayerFacing set 2, [hl] lda_coord 4, 9 dec e jr .storeTile .notFacingLeft cp SPRITE_FACING_RIGHT jr nz, .storeTile ; facing right ld hl, hPlayerFacing set 3, [hl] lda_coord 12, 9 inc e .storeTile ld c, a ld [wTileInFrontOfBoulderAndBoulderCollisionResult], a ld [wTileInFrontOfPlayer], a ret CheckForCollisionWhenPushingBoulder: call GetTileTwoStepsInFrontOfPlayer ld hl, wTilesetCollisionPtr ld a, [hli] ld h, [hl] ld l, a .loop ld a, [hli] cp $ff jr z, .done ; if the tile two steps ahead is not passable cp c jr nz, .loop ld hl, TilePairCollisionsLand call CheckForTilePairCollisions2 ld a, $ff jr c, .done ; if there is an elevation difference between the current tile and the one two steps ahead ld a, [wTileInFrontOfBoulderAndBoulderCollisionResult] cp $15 ; stairs tile ld a, $ff jr z, .done ; if the tile two steps ahead is stairs call CheckForBoulderCollisionWithSprites .done ld [wTileInFrontOfBoulderAndBoulderCollisionResult], a ret ; sets a to $ff if there is a collision and $00 if there is no collision CheckForBoulderCollisionWithSprites: ld a, [wBoulderSpriteIndex] dec a swap a ld d, 0 ld e, a ld hl, wSprite01StateData2MapY add hl, de ld a, [hli] ; map Y position ldh [hPlayerYCoord], a ld a, [hl] ; map X position ldh [hPlayerXCoord], a ld a, [wNumSprites] ld c, a ld de, $f ld hl, wSprite01StateData2MapY ldh a, [hPlayerFacing] and $3 ; facing up or down? jr z, .pushingHorizontallyLoop .pushingVerticallyLoop inc hl ldh a, [hPlayerXCoord] cp [hl] jr nz, .nextSprite1 ; if X coordinates don't match dec hl ld a, [hli] ld b, a ldh a, [hPlayerFacing] rrca jr c, .pushingDown ; pushing up ldh a, [hPlayerYCoord] dec a jr .compareYCoords .pushingDown ldh a, [hPlayerYCoord] inc a .compareYCoords cp b jr z, .failure .nextSprite1 dec c jr z, .success add hl, de jr .pushingVerticallyLoop .pushingHorizontallyLoop ld a, [hli] ld b, a ldh a, [hPlayerYCoord] cp b jr nz, .nextSprite2 ld b, [hl] ldh a, [hPlayerFacing] bit 2, a jr nz, .pushingLeft ; pushing right ldh a, [hPlayerXCoord] inc a jr .compareXCoords .pushingLeft ldh a, [hPlayerXCoord] dec a .compareXCoords cp b jr z, .failure .nextSprite2 dec c jr z, .success add hl, de jr .pushingHorizontallyLoop .failure ld a, $ff ret .success xor a ret