ref: b045ac4f16ca9b611a3e3baef0d9a0c33ac6351c
dir: /engine/overworld/hidden_objects.asm/
IsPlayerOnDungeonWarp:: xor a ld [wWhichDungeonWarp], a ld a, [wd72d] bit 4, a ret nz call ArePlayerCoordsInArray ret nc ld a, [wCoordIndex] ld [wWhichDungeonWarp], a ld hl, wd72d set 4, [hl] ld hl, wd732 set 4, [hl] ret ; if a hidden object was found, stores $00 in [hDidntFindAnyHiddenObject], else stores $ff CheckForHiddenObject:: ld hl, hItemAlreadyFound xor a ld [hli], a ; [hItemAlreadyFound] ld [hli], a ; [hSavedMapTextPtr] ld [hli], a ; [hSavedMapTextPtr + 1] ld [hl], a ; [hDidntFindAnyHiddenObject] ld de, $0 ld hl, HiddenObjectMaps .hiddenMapLoop ld a, [hli] ld b, a cp $ff jr z, .noMatch ld a, [wCurMap] cp b jr z, .foundMatchingMap inc de inc de jr .hiddenMapLoop .foundMatchingMap ld hl, HiddenObjectPointers add hl, de ld a, [hli] ld h, [hl] ld l, a push hl ld hl, wHiddenObjectFunctionArgument xor a ld [hli], a ld [hli], a ld [hl], a pop hl .hiddenObjectLoop ld a, [hli] cp $ff jr z, .noMatch ld [wHiddenObjectY], a ld b, a ld a, [hli] ld [wHiddenObjectX], a ld c, a call CheckIfCoordsInFrontOfPlayerMatch ldh a, [hCoordsInFrontOfPlayerMatch] and a jr z, .foundMatchingObject inc hl inc hl inc hl inc hl push hl ld hl, wHiddenObjectIndex inc [hl] pop hl jr .hiddenObjectLoop .foundMatchingObject ld a, [hli] ld [wHiddenObjectFunctionArgument], a ld a, [hli] ld [wHiddenObjectFunctionRomBank], a ld a, [hli] ld h, [hl] ld l, a ret .noMatch ld a, $ff ldh [hDidntFindAnyHiddenObject], a ret ; checks if the coordinates in front of the player's sprite match Y in b and X in c ; [hCoordsInFrontOfPlayerMatch] = $00 if they match, $ff if they don't match CheckIfCoordsInFrontOfPlayerMatch: ld a, [wSpritePlayerStateData1FacingDirection] cp SPRITE_FACING_UP jr z, .facingUp cp SPRITE_FACING_LEFT jr z, .facingLeft cp SPRITE_FACING_RIGHT jr z, .facingRight ; facing down ld a, [wYCoord] inc a jr .upDownCommon .facingUp ld a, [wYCoord] dec a .upDownCommon cp b jr nz, .didNotMatch ld a, [wXCoord] cp c jr nz, .didNotMatch jr .matched .facingLeft ld a, [wXCoord] dec a jr .leftRightCommon .facingRight ld a, [wXCoord] inc a .leftRightCommon cp c jr nz, .didNotMatch ld a, [wYCoord] cp b jr nz, .didNotMatch .matched xor a jr .done .didNotMatch ld a, $ff .done ldh [hCoordsInFrontOfPlayerMatch], a ret INCLUDE "data/events/hidden_objects.asm"