shithub: pokered

ref: bb1bf5e6a7536378dffc2b995384d6dc8692bea8
dir: /engine/subtract_paid_money.asm/

View raw version 
; subtracts the amount the player paid from their money
; sets carry flag if there is enough money and unsets carry flag if not
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