shithub: pokered

ref: 76b882d9523915ca8ced96e8c5e889ca2728241e
dir: /engine/items/subtract_paid_money.asm/

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; subtracts the amount the player paid from their money
; OUTPUT: carry = 0(success) or 1(fail because there is not enough money)
SubtractAmountPaidFromMoney_::
	ld de, wPlayerMoney
	ld hl, hMoney ; total price of items
	ld c, 3 ; length of money in bytes
	call StringCmp
	ret c
	ld de, wPlayerMoney + 2
	ld hl, hMoney + 2 ; total price of items
	ld c, 3 ; length of money in bytes
	predef SubBCDPredef ; subtract total price from money
	ld a, MONEY_BOX
	ld [wTextBoxID], a
	call DisplayTextBoxID ; redraw money text box
	and a
	ret