Files
alttpr-baserom/dungeon_map/dungeon_switch.asm

382 lines
5.1 KiB
NASM

CheckSwitchMap:
LDA.l DRMode
BEQ .not_fancy_door_map
; fancy door map
SEP #$20
LDA.b $F6
BIT.b #$30
BNE .change_dungeon
BIT.b #$80
BNE .select_new_room
LDA.b $F4
BIT.b #$80
BNE .select_new_room
BIT.b #$20
BNE .next_entrance
BIT.b #$40
BNE .current_room
AND.b #$0F
BEQ .doors_done
BIT.b #$08 : BEQ + : LDA.b #$00 : BRA .doors_move_cursor : +
BIT.b #$04 : BEQ + : LDA.b #$02 : BRA .doors_move_cursor : +
BIT.b #$02 : BEQ + : LDA.b #$01 : BRA .doors_move_cursor : +
LDA.b #$03
.doors_move_cursor
STA.b $00
JSL MoveDoorsMapCursor
BRA .doors_done
.select_new_room
JSL DoorsMapSelectCursor
BRA .doors_done
.next_entrance
JSL DoorsMapNextEntrance
BRA .doors_done
.change_dungeon
JSL DoorsMapChangeDungeon
BRA .doors_done
.current_room
LDA.l CachedDungeonID
CMP.w DungeonID
BNE .doors_done
JSL DoorsMapCurrentRoom
BRA .doors_done
.doors_done
REP #$20
LDA.w #$0002 ; ignore input! nothing to see here!
RTL
.not_fancy_door_map
SEP #$20
LDA.b $F6
AND.b #$30
BNE +
; what we wrote over
REP #$20
LDA.w DungeonMapFloorCountData, X
AND.w #$000F
CLC : ADC.b $00
RTL
+ PHA
TXA
ASL A
TAX
PLA
BIT.b #$20
BNE +
INX
+ LDA.l DungeonMapData.prev, X
STA.w DungeonID
LDA.b #$04
STA.w SubModuleInterface
REP #$20
LDA.w #$0000
RTL
DungeonMapSwitch_Submodule:
JSL $80893D
JSL $80833F
LDA.b #$09
STA.b $14
STA.w $0710
LDA.b #$01
STA.w SubModuleInterface
STA.w $020D
STZ.w $0213
STZ.w $021B
STZ.w $021C
STZ.b $06
STZ.b $07
LDA.w DungeonID
CMP.l CachedDungeonID
BEQ .current_dungeon
ASL A
TAX
LDA.l DungeonMapData.floor, X
STA.b CurrentFloor
BRA .continue
.current_dungeon
LDA.l CachedCurrentFloor
STA.b CurrentFloor
.continue
REP #$20
STZ.b $E0
STZ.b $E2
STZ.b $E4
STZ.b $E6
STZ.b $E8
STZ.b $EA
JML $98BCA1
SkipMapSprites:
STZ.b $00
LDA.b $02 : PHA
LDA.b $03 : PHA
LDA.b $04 : PHA
LDA.l DRMode
BNE +
LDA.w SubModuleInterface
CMP.b #$04
BEQ +
JSL DrawEntrances
+
PLA : STA.b $04
PLA : STA.b $03
PLA : STA.b $02
STZ.b $0E
STZ.b $0F
LDA.w SubModuleInterface
CMP.b #$04
BNE +
JML $8AEAFC
+
LDA.l DRMode
BEQ +
JSL DrawDoorsMapSprites
JML $8AEAFC
+
LDA.l CachedDungeonID
CMP.w DungeonID
BEQ +
JML $8AEAF3
+ JML $8AEADE
CacheCurrentDungeon:
STA.l $7EC206
SEP #$20
LDA.w DungeonID
STA.l CachedDungeonID
LDA.b CurrentFloor
STA.l CachedCurrentFloor
REP #$20
RTL
RestoreCurrentDungeon:
LDA.b #$F3
STA.w $012C ; what we wrote over
LDA.l CachedDungeonID
STA.w DungeonID
LDA.l CachedCurrentFloor
STA.b CurrentFloor
RTL
RestoreDungeonMapFloorIndex:
STZ.w $020F ; first part we wrote over
LDA.w $021B
STA.b $07
STZ.b $06
LDA.b $0A ; the rest of what we wrote over
AND.b #$08
RTL
DrawDungeonLabel:
LDY.b #$00
LDA.w DungeonID
ASL A
TAX
LDA.b NMISTRIPES
BEQ +
LDY.b #$20
+
; Dungeon Label
REP #$20
LDA.w #$E660
STA.w GFXStripes+$02, Y
LDA.w #$0300
STA.w GFXStripes+$04, Y
LDA.l DungeonLabels+0, X
STA.w GFXStripes+$06, Y
LDA.l DungeonLabels+2, X
STA.w GFXStripes+$08, Y
TYA
CLC : ADC.w #$0008
TAY
; L/R switch indicators
LDA.w #$E310
STA.w GFXStripes+$02, Y
LDA.w #$E910
STA.w GFXStripes+$0A, Y
LDA.w #$E318
STA.w GFXStripes+$12, Y
LDA.w #$E918
STA.w GFXStripes+$1A, Y
LDA.w #$0300
STA.w GFXStripes+$04, Y
STA.w GFXStripes+$0C, Y
STA.w GFXStripes+$14, Y
STA.w GFXStripes+$1C, Y
LDA.w #$49AF
STA.w GFXStripes+$06, Y
STA.w GFXStripes+$16, Y
LDA.w #$099E
STA.w GFXStripes+$08, Y
STA.w GFXStripes+$18, Y
LDA.w #$099F
STA.w GFXStripes+$0E, Y
STA.w GFXStripes+$1E, Y
LDA.w #$09AF
STA.w GFXStripes+$10, Y
STA.w GFXStripes+$20, Y
TYA
CLC : ADC.w #$0020
TAY
LDA.l DRMode
BNE .doors
JMP .skip_doors
.doors
; Select for Next Entrance indicator
LDA.w #$E311
STA.w GFXStripes+$02, Y
LDA.w #$E319
STA.w GFXStripes+$16, Y
LDA.w #$0F00
STA.w GFXStripes+$04, Y
STA.w GFXStripes+$18, Y
LDA.w #$09B8
LDX.b #$07
-
STA.w GFXStripes+$06, Y
STA.w GFXStripes+$1A, Y
INC A
INY : INY
DEX
BPL -
TYA
CLC : ADC.w #$0018
TAY
LDA.l CachedDungeonID
AND.w #$00FF
CMP.w DungeonID
BNE .skip_doors
; Y for Current Location indicator
LDA.w #$A411
STA.w GFXStripes+$02, Y
LDA.w #$A419
STA.w GFXStripes+$12, Y
LDA.w #$0B00
STA.w GFXStripes+$04, Y
STA.w GFXStripes+$14, Y
LDA.w #$09A9
LDX.b #$05
-
STA.w GFXStripes+$06, Y
STA.w GFXStripes+$16, Y
INC A
INY : INY
DEX
BPL -
TYA
CLC : ADC.w #$0014
TAY
.skip_doors
SEP #$20
LDA.b #$FF
STA.w GFXStripes+$02, Y
LDA.b #$01
STA.b NMISTRIPES
INC.w $020D ; what we wrote over
RTL
StartCurrentRoomSearch:
LDA.w DungeonMapFloorCountData, X
LSR A : LSR A : LSR A : LSR A
STA.b $00
LDA.w DungeonMapFloorCountData, X
AND.b #$0F
CLC : ADC.b $00
ASL A
TAY
RTL
FindCurrentRoom:
LDA.w DungeonMapFloorToDataOffset, Y
STA.b $0C
LDY.w #$0000
SEP #$20
.next_room_check
CPY.b $0C
BCS .not_found
LDA.b ($04), Y
INY
CMP.b $0E
BEQ .found
LDA.b $00
CMP.b #$40
BCS .next_row
CLC : ADC.b #$10
STA.b $00
BRA .next_room_check
.next_row
STZ.b $00
LDA.b $02
CMP.b #$40
BCS .next_floor
CLC : ADC.b #$10
STA.b $02
BRA .next_room_check
.next_floor
STZ.b $02
BRA .next_room_check
.found
JML $8AE891
.not_found
JML $8AE8CD