Files
alttpr-baserom/darkworldspawn.asm
cassidoxa 788cceaab9 Continue labeling and documentation in ram.asm, main rando block
Deleted several unused modules and some commented code
Reorganized some routines to clean up modules
Moved some memory into mirrored WRAM
Refactored NMI hook aux routine
Removed old fake flipper fix
2022-11-16 21:38:28 -05:00

155 lines
6.0 KiB
NASM

;================================================================================
; Dark World Spawn Location Fix & Master Sword Grove Fix
;--------------------------------------------------------------------------------
DarkWorldSaveFix:
LDA.b #$70 : PHA : PLB ; thing we wrote over - data bank change
JSL.l MasterSwordFollowerClear
JML.l StatSaveCounter
;--------------------------------------------------------------------------------
DoWorldFix:
LDA.l InvertedMode : BEQ +
JMP DoWorldFix_Inverted
+
LDA.l Bugfix_MirrorlessSQToLW : BEQ .skip_mirror_check
LDA.l FollowerIndicator : CMP.b #$04 : BEQ .setLightWorld ; check if old man is following
LDA.l MirrorEquipment : BEQ .noMirror ; check if we have the mirror
.skip_mirror_check ; alt entrance point
LDA.l ProgressIndicator : CMP.b #$03 : BCS .done ; check if agahnim 1 is alive
.setLightWorld
LDA.b #$00
.noMirror
STA.l CurrentWorld ; set flag to light world
LDA.l FollowerIndicator : CMP.b #$07 : BNE .done : INC : STA.l FollowerIndicator ; convert frog to dwarf
.done
RTL
;--------------------------------------------------------------------------------
SetDeathWorldChecked:
LDA.l InvertedMode : BEQ +
JMP SetDeathWorldChecked_Inverted
+
LDA.b $1B : BEQ .outdoors
LDA.w $040C : CMP.b #$FF : BNE .dungeon
LDA.b RoomIndex : ORA.b RoomIndex+1 : BNE ++
LDA.l GanonPyramidRespawn : BNE .pyramid ; if flag is set, force respawn at pyramid on death to ganon
++
.outdoors
JMP DoWorldFix
.dungeon
LDA.l Bugfix_PreAgaDWDungeonDeathToFakeDW : BNE .done ; if the bugfix is enabled, we do nothing on death in dungeon
JMP DoWorldFix_skip_mirror_check
.pyramid
LDA.b #$40 : STA.l CurrentWorld ; set flag to dark world
LDA.l FollowerIndicator : CMP.b #$08 : BNE .done : DEC : STA.l FollowerIndicator : + ; convert dwarf to frog
.done
RTL
;================================================================================
DoWorldFix_Inverted:
LDA.l Bugfix_MirrorlessSQToLW : BEQ .skip_mirror_check
LDA.l FollowerIndicator : CMP.b #$04 : BEQ .setDarkWorld ; check if old man is following
LDA.l MirrorEquipment : BEQ .setDarkWorld ; check if we have the mirror
.skip_mirror_check ; alt entrance point
LDA.l ProgressIndicator : CMP.b #$03 : BCS .done ; check if agahnim 1 is alive
.setDarkWorld
LDA.b #$40 : STA.l CurrentWorld ; set flag to dark world
LDA.l FollowerIndicator
CMP.b #$07 : BEQ .clear ; clear frog
CMP.b #$08 : BEQ .clear ; clear dwarf - consider flute implications
BRA .done
.clear
LDA.b #$00 : STA.l FollowerIndicator ; clear follower
.done
RTL
;--------------------------------------------------------------------------------
SetDeathWorldChecked_Inverted:
LDA.b $1B : BEQ .outdoors
LDA.w $040C : CMP.b #$FF : BNE .dungeon
LDA.b RoomIndex : ORA.b RoomIndex+1 : BNE ++
LDA.l GanonPyramidRespawn : BNE .castle ; if flag is set, force respawn at pyramid on death to ganon
++
.outdoors
JMP DoWorldFix
.dungeon
LDA.l Bugfix_PreAgaDWDungeonDeathToFakeDW : BNE .done ; if the bugfix is enabled, we do nothing on death in dungeon
JMP DoWorldFix_Inverted_skip_mirror_check
.castle
LDA.b #$00 : STA.l CurrentWorld ; set flag to dark world
LDA.l FollowerIndicator : CMP.b #$07 : BNE + : LDA.b #$08 : STA.l FollowerIndicator : + ; convert frog to dwarf
.done
RTL
;================================================================================
;--------------------------------------------------------------------------------
FakeWorldFix:
LDA.l FixFakeWorld : BEQ +
LDA.b $8A : AND.b #$40 : STA.l CurrentWorld
+
RTL
;--------------------------------------------------------------------------------
MasterSwordFollowerClear:
LDA.l FollowerIndicator
CMP.b #$0E : BNE .exit ; clear master sword follower
LDA.b #$00 : STA.l FollowerIndicator ; clear follower
.exit
RTL
;--------------------------------------------------------------------------------
FixAgahnimFollowers:
LDA.b #$00 : STA.l FollowerIndicator ; clear follower
JML PrepDungeonExit ; thing we wrote over
;--------------------------------------------------------------------------------
macro SetMinimum(base,filler,compare)
LDA.l <compare> : !SUB.l <base> : !BLT ?done
STA.l <filler>
?done:
endmacro
RefreshRainAmmo:
LDA.l ProgressIndicator : CMP.b #$01 : BEQ .rain ; check if we're in rain state
RTL
.rain
LDA.l StartingEntrance
+ CMP.b #$03 : BNE + ; Uncle
%SetMinimum(CurrentMagic,MagicFiller,RainDeathRefillMagic_Uncle)
%SetMinimum(BombsEquipment,BombsFiller,RainDeathRefillBombs_Uncle)
%SetMinimum(CurrentArrows,ArrowsFiller,RainDeathRefillArrows_Uncle)
BRA .done
+ CMP.b #$02 : BNE + ; Cell
%SetMinimum(CurrentMagic,MagicFiller,RainDeathRefillMagic_Cell)
%SetMinimum(BombsEquipment,BombsFiller,RainDeathRefillBombs_Cell)
%SetMinimum(CurrentArrows,ArrowsFiller,RainDeathRefillArrows_Cell)
BRA .done
+ CMP.b #$04 : BNE + ; Mantle
%SetMinimum(CurrentMagic,MagicFiller,RainDeathRefillMagic_Mantle)
%SetMinimum(BombsEquipment,BombsFiller,RainDeathRefillBombs_Mantle)
%SetMinimum(CurrentArrows,ArrowsFiller,RainDeathRefillArrows_Mantle)
+
.done
RTL
;--------------------------------------------------------------------------------
SetEscapeAssist:
LDA.l ProgressIndicator : CMP.b #$01 : BNE .no_train ; check if we're in rain state
.rain
LDA.l EscapeAssist
BIT.b #$04 : BEQ + : STA.l InfiniteArrows : +
BIT.b #$02 : BEQ + : STA.l InfiniteBombs : +
BIT.b #$01 : BEQ + : STA.l InfiniteArrows : +
BRA ++
.no_train ; choo choo
LDA.l EscapeAssist : BIT.b #$04 : BEQ + : LDA.b #$00 : STA.l InfiniteMagic : +
LDA.l EscapeAssist : BIT.b #$02 : BEQ + : LDA.b #$00 : STA.l InfiniteBombs : +
LDA.l EscapeAssist : BIT.b #$01 : BEQ + : LDA.b #$00 : STA.l InfiniteArrows : +
++
RTL
;--------------------------------------------------------------------------------
SetSilverBowMode:
LDA.l SilverArrowsUseRestriction : BEQ + ; fix bow type for restricted arrow mode
LDA.l BowEquipment : CMP.b #$3 : BCC +
SBC.b #$02 : STA.l BowEquipment
+
RTL
;================================================================================