pokecrystal/engine/events/elevator.asm

217 lines
3.2 KiB
NASM

Elevator::
call .LoadPointer
call .FindCurrentFloor
jr c, .quit
ld [wElevatorOriginFloor], a
call Elevator_AskWhichFloor
jr c, .quit
ld hl, wElevatorOriginFloor
cp [hl]
jr z, .quit
call Elevator_GoToFloor
and a
ret
.quit
scf
ret
.LoadPointer:
ld a, b
ld [wElevatorPointerBank], a
ld a, e
ld [wElevatorPointer], a
ld a, d
ld [wElevatorPointer + 1], a
call .LoadFloors
ret
.LoadFloors:
ld de, wCurElevator
ld bc, wElevatorDataEnd - wElevatorData
ld hl, wElevatorPointer
ld a, [hli]
ld h, [hl]
ld l, a
ld a, [wElevatorPointerBank]
call GetFarByte
inc hl
ld [de], a
inc de
.loop
ld a, [wElevatorPointerBank]
call GetFarByte
ld [de], a
inc de
add hl, bc
cp -1
jr nz, .loop
ret
.FindCurrentFloor:
ld hl, wElevatorPointer
ld a, [hli]
ld h, [hl]
ld l, a
ld a, [wElevatorPointerBank]
call GetFarByte
ld c, a
inc hl
ld a, [wBackupMapGroup]
ld d, a
ld a, [wBackupMapNumber]
ld e, a
ld b, 0
.loop2
ld a, [wElevatorPointerBank]
call GetFarByte
cp -1
jr z, .fail
inc hl
inc hl
ld a, [wElevatorPointerBank]
call GetFarByte
inc hl
cp d
jr nz, .next1
ld a, [wElevatorPointerBank]
call GetFarByte
inc hl
cp e
jr nz, .next2
jr .done
.next1
inc hl
.next2
inc b
jr .loop2
.done
xor a
ld a, b
ret
.fail
scf
ret
Elevator_GoToFloor:
push af
ld hl, wElevatorPointer
ld a, [hli]
ld h, [hl]
ld l, a
inc hl
pop af
ld bc, wElevatorDataEnd - wElevatorData
call AddNTimes
inc hl
ld de, wBackupWarpNumber
ld a, [wElevatorPointerBank]
ld bc, wElevatorDataEnd - wElevatorData - 1
call FarCopyBytes
ret
Elevator_AskWhichFloor:
call LoadStandardMenuHeader
ld hl, Elevator_WhichFloorText
call PrintText
call Elevator_GetCurrentFloorText
ld hl, Elevator_MenuHeader
call CopyMenuHeader
call InitScrollingMenu
call UpdateSprites
xor a
ld [wMenuScrollPosition], a
call ScrollingMenu
call CloseWindow
ld a, [wMenuJoypad]
cp B_BUTTON
jr z, .cancel
xor a
ld a, [wScrollingMenuCursorPosition]
ret
.cancel
scf
ret
Elevator_WhichFloorText:
; Which floor?
text_far UnknownText_0x1bd2bc
text_end
Elevator_GetCurrentFloorText:
ld hl, wOptions
ld a, [hl]
push af
set NO_TEXT_SCROLL, [hl]
hlcoord 0, 0
ld b, 4
ld c, 8
call Textbox
hlcoord 1, 2
ld de, Elevator_CurrentFloorText
call PlaceString
hlcoord 4, 4
call Elevator_GetCurrentFloorString
pop af
ld [wOptions], a
ret
Elevator_CurrentFloorText:
db "Now on:@"
Elevator_GetCurrentFloorString:
push hl
ld a, [wElevatorOriginFloor]
ld e, a
ld d, 0
ld hl, wCurElevatorFloors
add hl, de
ld a, [hl]
pop de
call GetFloorString
ret
Elevator_MenuHeader:
db MENU_BACKUP_TILES ; flags
menu_coords 12, 1, 18, 9
dw Elevator_MenuData
db 1 ; default option
Elevator_MenuData:
db SCROLLINGMENU_DISPLAY_ARROWS ; flags
db 4, 0 ; rows, columns
db SCROLLINGMENU_ITEMS_NORMAL ; item format
dbw 0, wCurElevator
dba GetElevatorFloorStrings
dba NULL
dba NULL
GetElevatorFloorStrings:
ld a, [wMenuSelection]
GetFloorString:
push de
call FloorToString
ld d, h
ld e, l
pop hl
jp PlaceString
FloorToString:
push de
ld e, a
ld d, 0
ld hl, ElevatorFloorNames
add hl, de
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
pop de
ret
INCLUDE "data/events/elevator_floors.asm"