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18 lines
522 B
NASM
18 lines
522 B
NASM
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; subtracts the amount the player paid from their money
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; sets carry flag if there is enough money and unsets carry flag if not
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SubtractAmountPaidFromMoney_:
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ld de,wPlayerMoney
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ld hl,hMoney ; total price of items
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ld c,3 ; length of money in bytes
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call StringCmp
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ret c
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ld de,wPlayerMoney + 2
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ld hl,hMoney + 2 ; total price of items
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ld c,3 ; length of money in bytes
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predef SubBCDPredef ; subtract total price from money
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ld a,MONEY_BOX
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ld [wTextBoxID],a
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call DisplayTextBoxID ; redraw money text box
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and a
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ret
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