Files
alttpr-baserom/doorrando/overrides.asm
2023-03-01 15:41:54 -07:00

136 lines
3.5 KiB
NASM

GtBossHeartCheckOverride:
lda $a0 : cmp #$1c : beq ++
cmp #$6c : beq ++
cmp #$4d : bne +
++ lda.l DRFlags : and #$01 : bne ++ ;skip if flag on
lda $403 : ora #$80 : sta $403
++ clc
rtl
+ sec
rtl
OnFileLoadOverride:
jsl OnFileLoad ; what I wrote over
+ lda.l DRFlags : and #$02 : beq + ; Mirror Scroll
lda MirrorEquipment : bne +
lda #$01 : sta MirrorEquipment
+ rtl
MirrorCheckOverride:
lda.l DRFlags : and #$02 : beq ++
lda MirrorEquipment : cmp #$01 : beq +
++ lda $8A : and #$40 ; what I wrote over
rtl
+ lda.l DRScroll : rtl
EGFixOnMirror:
lda.l DRFlags : and #$10 : beq +
stz $047a
+ jsl Mirror_SaveRoomData
rtl
BlockEraseFix:
lda MirrorEquipment : and #$02 : beq +
stz $05fc : stz $05fd
+ rtl
FixShopCode:
cpx #$300 : !bge +
sta RoomDataWRAM[$00].l, x
+ rtl
VitreousKeyReset:
lda.l DRMode : beq +
stz $0cba, x
+ JML $0db818 ;restore old code
GuruguruFix:
lda $a0 : cmp #$df : !bge +
and #$0f : cmp #$0e : !blt +
iny #2
+ rtl
BlindAtticFix:
lda.l DRMode : beq +
lda #$01 : rtl
+ lda FollowerIndicator : cmp.b #$06
rtl
SuctionOverworldFix:
stz $50 : stz $5e
lda.l DRMode : beq +
stz $49
+ rtl
!CutoffTable = "$27E000"
CutoffEntranceRug:
PHA : PHX
LDA.l DRMode : BEQ .norm
LDA $04 : cmp #$000A : BEQ + ; only affect A & C objects
cmp #$000C : BNE .norm
+ LDX #$0000 : LDA !CutoffTable, x
- CMP.W $A0 : BEQ .check
INX #2 : LDA !CutoffTable, x : CMP.w #$FFFF : BNE -
.norm PLX : PLA : LDA $9B52, y : STA $7E2000, x ; what we wrote over
RTL
.check
LDA $0c : CMP #$0004 : !BGE .skip
LDA $0e : CMP #$0008 : !BGE .skip
CMP.l #$0004 : !BLT .skip
BRA .norm
.skip PLX : PLA : RTL
StoreTempBunnyState:
LDA $5D : CMP #$1C : BNE +
STA $5F
+ LDA #$15 : STA $5D ; what we wrote over
RTL
RetrieveBunnyState:
STY $5D : STZ $02D8 ; what we wrote over
LDA $5F : BEQ +
STA $5D
+ RTL
; A should be how much dmg to do to Aga when leaving this function
StandardAgaDmg:
LDX.b #$00 ; part of what we wrote over
LDA.l ProgressFlags : AND #$04 : BEQ + ; zelda's not been rescued
LDA.b #$10 ; hurt him!
+ RTL ; A is zero if the AND results in zero and then Agahnim's invincible!
StandardSaveAndQuit:
LDA.b #$0F : STA.b $95 ; what we wrote over
LDA.l ProgressFlags : AND #$04 : BNE +
LDA.l DRMode : BEQ +
LDA.l StartingEntrance : CMP.b #$02 : BCC +
LDA.b #$03 : STA.l StartingEntrance ; set spawn to uncle if >=
+ RTL
; note: this skips both maiden dialog triggers if the hole is open
BlindsAtticHint:
REP #$20
CMP.w #$0122 : BNE +
LDA RoomDataWRAM[$65].low : AND.w #$0100 : BEQ +
SEP #$20 : RTL ; skip the dialog box if the hole is already open
+ SEP #$20 : JML Main_ShowTextMessage
BlindZeldaDespawnFix:
CMP.b #06 : BEQ +
LDA.w $0D00,X : BEQ + ; don't despawn follower if maiden isn't "present"
PLA : PLA : PEA.w SpritePrep_BlindMaiden_despawn_follower-1 : RTL
+ PLA : PLA : PEA.w SpritePrep_BlindMaiden_kill_the_girl-1 : RTL
BigKeyDoorCheck:
CPY.w #$001E : BNE + ; skip if it isn't a BK door
LDA.l DRFlags : AND #$0400 : BNE + ; skip if the flag is set - bk doors can be double-sided
PLA : PEA.w RoomDraw_OneSidedShutters_South_onesided_shutter_or_big_key_door-1
+ LDA.w #$0000 : RTL
FixOvalFadeOutMirror:
LDA.b $10 : CMP.b #$0F : BEQ .skip_activation
LDA.l CurrentWorld : BNE .skip_activation
RTL
.skip_activation
PLA : PLA : PLA : JML Sprite_6C_MirrorPortal_missing_mirror