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get_bag_item_quantity.asm

get_bag_item_quantity.asm 258 B
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  1. GetQuantityOfItemInBag:
    2. 

  2. ; In: b = item ID
    3. 

  3. ; Out: b = how many of that item are in the bag
    4. 

  4. 	call GetPredefRegisters
    5. 

  5. 	ld hl, wNumBagItems
    6. 

  6. .loop
    7. 

  7. 	inc hl
    8. 

  8. 	ld a, [hli]
    9. 

  9. 	cp $ff
    10. 

  10. 	jr z, .notInBag
    11. 

  11. 	cp b
    12. 

  12. 	jr nz, .loop
    13. 

  13. 	ld a, [hl]
    14. 

  14. 	ld b, a
    15. 

  15. 	ret
    16. 

  16. .notInBag
    17. 

  17. 	ld b, 0
    18. 

  18. 	ret
    19. 

  19.