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hardmode.asm
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hardmode.asm
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;================================================================================
; Hard & Masochist Mode
;================================================================================
CalculateSpikeFloorDamage:
REP #$20 ; set 16-bit accumulator
LDA $A0 ; these are all decimal because i got them that way
CMP.w #279
SEP #$20 ; set 8-bit accumulator
BNE +
LDA.l ByrnaCaveSpikeDamage
STA $0373
RTL
+
LDA $D055, Y
STA $0373
RTL
;--------------------------------------------------------------------------------
CalculateByrnaUsage:
LDA $1B : BEQ ++
REP #$20 ; set 16-bit accumulator
LDA $A0 ; these are all decimal because i got them that way
CMP.w #95 : BEQ + ; Ice Palace Spike Room
CMP.w #172 : BEQ + ; Blind Boss Room
CMP.w #179 : BEQ + ; Room in Misery Mire
CMP.w #213 : BEQ + ; Laser Bridge
CMP.w #279 : BEQ + ; Spike Cave
SEP #$20 ; set 8-bit accumulator
BRA ++
+
SEP #$20 ; set 8-bit accumulator
PHX : TYX
LDA.l HardModeExclusionCaneOfByrnaUsage, X : STA $00
PLX
++
LDA $7EF36E ; thing we wrote over
RTL
;--------------------------------------------------------------------------------
CalculateCapeUsage:
LDA $1B : BEQ ++
REP #$20 ; set 16-bit accumulator
LDA $A0 ; these are all decimal because i got them that way
CMP.w #95 : BEQ + ; Ice Palace Spike Room
CMP.w #179 : BEQ + ; Room in Misery Mire
CMP.w #213 : BEQ + ; Laser Bridge
CMP.w #279 : BEQ + ; Spike Cave
SEP #$20 ; set 8-bit accumulator
BRA ++
+
SEP #$20 ; set 8-bit accumulator
PHX : TYX
LDA.l HardModeExclusionCapeUsage, X : STA $4C ; set cape decrement timer
PLX
++
LDA $7EF36E ; thing we wrote over
RTL
;--------------------------------------------------------------------------------
ActivateInvulnerabilityOrDont:
LDA $1B : BEQ .nowhere_special
REP #$20 ; set 16-bit accumulator
LDA $A0 ; these are all decimal because i got them that way
CMP.w #95 : BEQ .somewhere_cool ; Ice Palace Spike Room
CMP.w #179 : BEQ .somewhere_cool ; Room in Misery Mire
CMP.w #213 : BEQ .somewhere_cool ; Laser Bridge
CMP.w #279 : BEQ .somewhere_cool ; Spike Cave
SEP #$20 ; set 8-bit accumulator
BRA .nowhere_special
.somewhere_cool
SEP #$20 ; set 8-bit accumulator
LDA.b #$01 : STA $037B : RTL
.nowhere_special
LDA.l ByrnaInvulnerability : STA $037B
RTL
;--------------------------------------------------------------------------------
GetItemDamageValue:
CPX.b #$03 : BEQ .boomerang
CPX.b #$04 : BEQ .boomerang
CPX.b #$05 : BEQ .boomerang
CPX.b #$39 : BEQ .hookshot
CPX.b #$3b : BEQ .hookshot
CPX.b #$3c : BEQ .hookshot
CPX.b #$3d : BEQ .hookshot
.normal
lda $0db8f1,x ;what we wrote over
RTL
.boomerang
LDA.l StunItemAction : AND #$01 : BNE .normal
BRA .noDamage
.hookshot
LDA.l StunItemAction : AND #$02 : BNE .normal
.noDamage
LDA.b #$00
RTL
;--------------------------------------------------------------------------------
;Argument : A = id we want to find return 00 if none found, 01 if found
SearchAncilla:
{
STA $05
PHX
LDX #$00
.loop
LDA $0C4A, X
INX : CPX #$0A : BEQ .notFound
CMP $05 : BNE .loop
LDA #$01
BRA .return
.notFound
LDA #$00
.return
PLX
RTS
}