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https://github.com/pret/pokered.git
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52 lines
763 B
NASM
52 lines
763 B
NASM
HiddenItemNear:
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ld hl, HiddenItemCoords
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ld b, 0
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.loop
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ld de, 3
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ld a, [wCurMap]
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call IsInRestOfArray
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ret nc ; return if current map has no hidden items
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push bc
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push hl
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ld hl, wObtainedHiddenItemsFlags
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ld c, b
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ld b, FLAG_TEST
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predef FlagActionPredef
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ld a, c
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pop hl
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pop bc
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inc b
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and a
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inc hl
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ld d, [hl]
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inc hl
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ld e, [hl]
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inc hl
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jr nz, .loop ; if the item has already been obtained
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; check if the item is within 4-5 tiles (depending on the direction of item)
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ld a, [wYCoord]
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call Sub5ClampTo0
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cp d
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jr nc, .loop
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ld a, [wYCoord]
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add 4
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cp d
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jr c, .loop
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ld a, [wXCoord]
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call Sub5ClampTo0
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cp e
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jr nc, .loop
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ld a, [wXCoord]
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add 5
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cp e
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jr c, .loop
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scf
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ret
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Sub5ClampTo0:
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; subtract 5 but clamp to 0
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sub 5
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cp $f0
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ret c
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xor a
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ret
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