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https://github.com/pret/pokered.git
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b29e5ee203
Top level text/ is now solely for the former text/maps/ files, and other files are in their respective subdirectories in data/.
133 lines
2.2 KiB
NASM
Executable file
133 lines
2.2 KiB
NASM
Executable file
IsPlayerOnDungeonWarp::
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xor a
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ld [wWhichDungeonWarp], a
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ld a, [wd72d]
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bit 4, a
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ret nz
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call ArePlayerCoordsInArray
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ret nc
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ld a, [wCoordIndex]
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ld [wWhichDungeonWarp], a
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ld hl, wd72d
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set 4, [hl]
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ld hl, wd732
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set 4, [hl]
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ret
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; if a hidden object was found, stores $00 in [$ffee], else stores $ff
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CheckForHiddenObject::
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ld hl, $ffeb
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xor a
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ld [hli], a
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ld [hli], a
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ld [hli], a
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ld [hl], a
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ld de, $0
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ld hl, HiddenObjectMaps
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.hiddenMapLoop
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ld a, [hli]
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ld b, a
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cp $ff
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jr z, .noMatch
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ld a, [wCurMap]
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cp b
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jr z, .foundMatchingMap
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inc de
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inc de
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jr .hiddenMapLoop
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.foundMatchingMap
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ld hl, HiddenObjectPointers
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add hl, de
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ld a, [hli]
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ld h, [hl]
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ld l, a
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push hl
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ld hl, wHiddenObjectFunctionArgument
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xor a
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ld [hli], a
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ld [hli], a
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ld [hl], a
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pop hl
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.hiddenObjectLoop
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ld a, [hli]
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cp $ff
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jr z, .noMatch
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ld [wHiddenObjectY], a
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ld b, a
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ld a, [hli]
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ld [wHiddenObjectX], a
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ld c, a
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call CheckIfCoordsInFrontOfPlayerMatch
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ld a, [hCoordsInFrontOfPlayerMatch]
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and a
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jr z, .foundMatchingObject
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inc hl
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inc hl
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inc hl
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inc hl
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push hl
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ld hl, wHiddenObjectIndex
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inc [hl]
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pop hl
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jr .hiddenObjectLoop
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.foundMatchingObject
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ld a, [hli]
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ld [wHiddenObjectFunctionArgument], a
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ld a, [hli]
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ld [wHiddenObjectFunctionRomBank], a
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ld a, [hli]
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ld h, [hl]
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ld l, a
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ret
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.noMatch
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ld a, $ff
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ld [$ffee], a
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ret
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; checks if the coordinates in front of the player's sprite match Y in b and X in c
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; [hCoordsInFrontOfPlayerMatch] = $00 if they match, $ff if they don't match
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CheckIfCoordsInFrontOfPlayerMatch:
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ld a, [wSpriteStateData1 + 9] ; player's sprite facing direction
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cp SPRITE_FACING_UP
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jr z, .facingUp
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cp SPRITE_FACING_LEFT
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jr z, .facingLeft
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cp SPRITE_FACING_RIGHT
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jr z, .facingRight
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; facing down
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ld a, [wYCoord]
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inc a
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jr .upDownCommon
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.facingUp
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ld a, [wYCoord]
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dec a
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.upDownCommon
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cp b
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jr nz, .didNotMatch
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ld a, [wXCoord]
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cp c
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jr nz, .didNotMatch
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jr .matched
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.facingLeft
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ld a, [wXCoord]
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dec a
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jr .leftRightCommon
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.facingRight
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ld a, [wXCoord]
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inc a
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.leftRightCommon
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cp c
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jr nz, .didNotMatch
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ld a, [wYCoord]
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cp b
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jr nz, .didNotMatch
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.matched
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xor a
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jr .done
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.didNotMatch
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ld a, $ff
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.done
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ld [hCoordsInFrontOfPlayerMatch], a
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ret
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INCLUDE "data/events/hidden_objects.asm"
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