forked from KatDevsGames/z3randomizer
/
goalitem.asm
85 lines (82 loc) · 3.33 KB
/
goalitem.asm
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;--------------------------------------------------------------------------------
; $7F5010 - Scratch Space (Callee Preserved)
;--------------------------------------------------------------------------------
!GOAL_COUNTER = "$7EF418"
!GOAL_DRAW_ADDRESS = "$7EC72A"
;--------------------------------------------------------------------------------
; DrawGoalIndicator moved to newhud.asm
;--------------------------------------------------------------------------------
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 #$04 : BNE +
;#$04 = Require Crystals
JSL CheckEnoughCrystalsForGanon : !BLT .fail ; require specified number of crystals
BRA .success
+ : CMP #$03 : BNE +
;#$03 = Require Crystals and Aga 2
JSL CheckEnoughCrystalsForGanon : !BLT .fail ; require specified number of crystals
LDA $7EF2DB : AND.b #$20 : CMP #$20 : BNE .fail ; require aga2 defeated (pyramid hole open)
BRA .success
+ : CMP #$05 : BNE +
;#$05 = Require Goal Items
LDA.l !GOAL_COUNTER : CMP GoalItemRequirement : !BLT .fail ; require specified number of goal items
BRA .success
+
.fail : CLC : RTL
.success : SEC : RTL
;--------------------------------------------------------------------------------
GetRequiredCrystalsForTower:
BEQ + : JSL.l BreakTowerSeal_ExecuteSparkles : + ; thing we wrote over
LDA.l NumberOfCrystalsRequiredForTower : CMP.b #$00 : BNE + : JML.l Ancilla_BreakTowerSeal_stop_spawning_sparkles : +
LDA.l NumberOfCrystalsRequiredForTower : CMP.b #$01 : BNE + : JML.l Ancilla_BreakTowerSeal_draw_single_crystal : +
LDA.l NumberOfCrystalsRequiredForTower : DEC #2 : TAX
JML.l GetRequiredCrystalsForTower_continue
;--------------------------------------------------------------------------------
GetRequiredCrystalsInX:
LDA.l NumberOfCrystalsRequiredForTower : CMP.b #$00 : BNE +
TAX
RTL
+
TXA : - : CMP.l NumberOfCrystalsRequiredForTower : !BLT + : !SUB.l NumberOfCrystalsRequiredForTower : BRA - : +
INC : CMP.l NumberOfCrystalsRequiredForTower : BNE +
LDA.b #$08
+ : DEC : TAX
RTL
;--------------------------------------------------------------------------------
CheckEnoughCrystalsForGanon:
PHX : PHY
LDA $7EF37A : JSL CountBits ; the comparison is against 1 less
PLY : PLX
CMP.l NumberOfCrystalsRequiredForGanon
RTL
;--------------------------------------------------------------------------------
CheckEnoughCrystalsForTower:
PHX : PHY
LDA $7EF37A : JSL CountBits ; the comparison is against 1 less
PLY : PLX
CMP.l NumberOfCrystalsRequiredForTower
RTL