CoCalc -- get_bag_item_quantity.asm

GitHub Repository: pret/pokered
Path: blob/master/engine/items/get_bag_item_quantity.asm
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GetQuantityOfItemInBag:
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; In: b = item ID
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; Out: b = how many of that item are in the bag
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	call GetPredefRegisters
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	ld hl, wNumBagItems
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.loop
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	inc hl
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	ld a, [hli]
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	cp $ff
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	jr z, .notInBag
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	cp b
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	jr nz, .loop
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	ld a, [hl]
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	ld b, a
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	ret
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.notInBag
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	ld b, 0
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	ret
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