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goalitem.asm
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;--------------------------------------------------------------------------------
; $7F5010 - Scratch Space (Callee Preserved)
;--------------------------------------------------------------------------------
!GOAL_COUNTER = "$7EF460"
DrawGoalIndicator:
LDA.l GoalItemRequirement : AND.w #$00FF : BNE + : RTL : + ; Star Meter
PHX
LDX.w #$0000
LDA.l GoalItemIcon : STA $7EC72C, X : INX #2 ; draw star icon and move the cursor
LDA.l !GOAL_COUNTER
AND.w #$00FF
JSL.l HexToDec
LDA $7F5006 : AND.w #$00FF : ORA.w #$2400 : STA $7EC72C, X : INX #2 ; draw 10's digit and move the cursor
LDA $7F5007 : AND.w #$00FF : ORA.w #$2400 : STA $7EC72C, X : INX #2 ; draw 1's and move the cursor
LDA.w #$2830 : STA $7EC72C, X : INX #2 ; draw slash and move the cursor
LDA.l GoalItemRequirement
AND.w #$00FF
JSL.l HexToDec
LDA $7F5006 : AND.w #$00FF : ORA.w #$2400 : STA $7EC72C, X : INX #2 ; draw 10's digit and move the cursor
LDA $7F5007 : AND.w #$00FF : ORA.w #$2400 : STA $7EC72C, X : INX #2 ; draw 1's and move the cursor
PLX
RTL
;--------------------------------------------------------------------------------
GoalItemGanonCheck:
LDA $0E20, X : CMP.b #$D6 : BNE .success ; skip if not ganon
JSL.l CheckGanonVulnerability
BCS .success
.fail
LDA $0D80, X : CMP.b #17 : !BLT .success ; decmial 17 because Acmlm's chart is decimal
LDA.b #$00
RTL
.success
LDA $44 : CMP.b #$80 ; thing we wrote over
RTL
;--------------------------------------------------------------------------------
;Carry clear = ganon invincible
;Carry set = ganon vulnerable
CheckGanonVulnerability:
LDA InvincibleGanon : BEQ .success
;#$00 = Off
+ : CMP #$01 : BEQ .fail
;#$01 = On
+ : CMP #$02 : BNE +
;#$02 = Require All Dungeons
LDA $7EF374 : AND.b #$07 : CMP #$07 : BNE .fail ; require all pendants
LDA $7EF37A : AND.b #$7F : CMP #$7F : BNE .fail ; require all crystals
LDA $7EF3C5 : CMP.b #$03 : !BLT .fail ; require post-aga world state
LDA $7EF2DB : AND.b #$20 : CMP #$20 : BNE .fail ; require aga2 defeated (pyramid hole open)
BRA .success
+ ; CMP #$03 : BNE + this is a comment
;#$03 = Require All Crystals
LDA $7EF37A : AND.b #$7F : CMP #$7F : BNE .fail ; require all crystals
LDA $7EF2DB : AND.b #$20 : CMP #$20 : BNE .fail ; require aga2 defeated (pyramid hole open)
BRA .success
+
.fail : CLC : RTL
.success : SEC : RTL
;--------------------------------------------------------------------------------