pokecrystal-board/home/menu.asm

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Load2DMenuData::
push hl
push bc
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ld hl, w2DMenuData
ld b, w2DMenuDataEnd - w2DMenuData
.loop
ld a, [de]
inc de
ld [hli], a
dec b
jr nz, .loop
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; Reset menu state
ld a, $1
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ld [hli], a ; wMenuCursorY
ld [hli], a ; wMenuCursorX
xor a
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ld [hli], a ; wCursorOffCharacter
ld [hli], a ; wCursorCurrentTile
ld [hli], a
pop bc
pop hl
ret
StaticMenuJoypad::
callfar _StaticMenuJoypad
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call GetMenuJoypad
ret
ScrollingMenuJoypad::
callfar _ScrollingMenuJoypad
call GetMenuJoypad
ret
GetMenuJoypad::
push bc
push af
ldh a, [hJoyLast]
and D_PAD
ld b, a
ldh a, [hJoyPressed]
and BUTTONS
or b
ld b, a
pop af
ld a, b
pop bc
ret
PlaceHollowCursor::
ld hl, wCursorCurrentTile
ld a, [hli]
ld h, [hl]
ld l, a
ld [hl], "â–·"
ret
HideCursor::
ld hl, wCursorCurrentTile
ld a, [hli]
ld h, [hl]
ld l, a
ld [hl], " "
ret
PushWindow::
callfar _PushWindow
ret
ExitMenu::
push af
callfar _ExitMenu
pop af
ret
InitVerticalMenuCursor::
callfar _InitVerticalMenuCursor
ret
CloseWindow::
push af
call ExitMenu
call ApplyTilemap
call UpdateSprites
pop af
ret
RestoreTileBackup::
call MenuBoxCoord2Tile
call .copy
call MenuBoxCoord2Attr
call .copy
ret
.copy
call GetMenuBoxDims
inc b
inc c
.row
push bc
push hl
.col
ld a, [de]
ld [hli], a
dec de
dec c
jr nz, .col
pop hl
ld bc, SCREEN_WIDTH
add hl, bc
pop bc
dec b
jr nz, .row
ret
PopWindow::
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ld b, wMenuHeaderEnd - wMenuHeader
ld de, wMenuHeader
.loop
ld a, [hld]
ld [de], a
inc de
dec b
jr nz, .loop
ret
GetMenuBoxDims::
ld a, [wMenuBorderTopCoord] ; top
ld b, a
ld a, [wMenuBorderBottomCoord] ; bottom
sub b
ld b, a
ld a, [wMenuBorderLeftCoord] ; left
ld c, a
ld a, [wMenuBorderRightCoord] ; right
sub c
ld c, a
ret
CopyMenuData::
push hl
push de
push bc
push af
ld hl, wMenuDataPointer
ld a, [hli]
ld h, [hl]
ld l, a
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ld de, wMenuData
ld bc, wMenuDataEnd - wMenuData
call CopyBytes
pop af
pop bc
pop de
pop hl
ret
GetWindowStackTop::
ld hl, wWindowStackPointer
ld a, [hli]
ld h, [hl]
ld l, a
inc hl
ld a, [hli]
ld h, [hl]
ld l, a
ret
PlaceVerticalMenuItems::
call CopyMenuData
ld hl, wMenuDataPointer
ld e, [hl]
inc hl
ld d, [hl]
call GetMenuTextStartCoord
call Coord2Tile ; hl now contains the tilemap address where we will start printing text.
inc de
ld a, [de] ; Number of items
inc de
ld b, a
.loop
push bc
call PlaceString
inc de
ld bc, 2 * SCREEN_WIDTH
add hl, bc
pop bc
dec b
jr nz, .loop
ld a, [wMenuDataFlags]
bit 4, a
ret z
call MenuBoxCoord2Tile
ld a, [de]
ld c, a
inc de
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ld b, 0
add hl, bc
jp PlaceString
MenuBox::
call MenuBoxCoord2Tile
call GetMenuBoxDims
dec b
dec c
jp Textbox
GetMenuTextStartCoord::
ld a, [wMenuBorderTopCoord]
ld b, a
inc b
ld a, [wMenuBorderLeftCoord]
ld c, a
inc c
; bit 6: if not set, leave extra room on top
ld a, [wMenuDataFlags]
bit 6, a
jr nz, .bit_6_set
inc b
.bit_6_set
; bit 7: if set, leave extra room on the left
ld a, [wMenuDataFlags]
bit 7, a
jr z, .bit_7_clear
inc c
.bit_7_clear
ret
ClearMenuBoxInterior::
call MenuBoxCoord2Tile
ld bc, SCREEN_WIDTH + 1
add hl, bc
call GetMenuBoxDims
dec b
dec c
call ClearBox
ret
ClearWholeMenuBox::
call MenuBoxCoord2Tile
call GetMenuBoxDims
inc c
inc b
call ClearBox
ret
MenuBoxCoord2Tile::
ld a, [wMenuBorderLeftCoord]
ld c, a
ld a, [wMenuBorderTopCoord]
ld b, a
; fallthrough
Coord2Tile::
; Return the address of wTilemap(c, b) in hl.
xor a
ld h, a
ld l, b
ld a, c
ld b, h
ld c, l
add hl, hl
add hl, hl
add hl, bc
add hl, hl
add hl, hl
ld c, a
xor a
ld b, a
add hl, bc
bccoord 0, 0
add hl, bc
ret
MenuBoxCoord2Attr::
ld a, [wMenuBorderLeftCoord]
ld c, a
ld a, [wMenuBorderTopCoord]
ld b, a
; fallthrough
Coord2Attr::
; Return the address of wAttrmap(c, b) in hl.
xor a
ld h, a
ld l, b
ld a, c
ld b, h
ld c, l
add hl, hl
add hl, hl
add hl, bc
add hl, hl
add hl, hl
ld c, a
xor a
ld b, a
add hl, bc
bccoord 0, 0, wAttrmap
add hl, bc
ret
LoadMenuHeader::
call CopyMenuHeader
call PushWindow
ret
CopyMenuHeader::
ld de, wMenuHeader
ld bc, wMenuHeaderEnd - wMenuHeader
call CopyBytes
ldh a, [hROMBank]
ld [wMenuDataBank], a
ret
StoreMenuCursorPosition::
ld [wMenuCursorPosition], a
ret
MenuTextbox::
push hl
call LoadMenuTextbox
pop hl
jp PrintText
LoadMenuTextbox::
ld hl, .MenuHeader
call LoadMenuHeader
ret
.MenuHeader:
db MENU_BACKUP_TILES ; flags
menu_coords 0, 12, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1
dw vTiles0
db 0 ; default option
MenuTextboxBackup::
call MenuTextbox
call CloseWindow
ret
LoadStandardMenuHeader::
ld hl, .MenuHeader
call LoadMenuHeader
ret
.MenuHeader:
db MENU_BACKUP_TILES ; flags
menu_coords 0, 0, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1
dw 0
db 1 ; default option
Call_ExitMenu::
call ExitMenu
ret
VerticalMenu::
xor a
ldh [hBGMapMode], a
call MenuBox
call UpdateSprites
call PlaceVerticalMenuItems
call ApplyTilemap
call CopyMenuData
ld a, [wMenuDataFlags]
bit 7, a
jr z, .cancel
call InitVerticalMenuCursor
call StaticMenuJoypad
call MenuClickSound
bit 1, a
jr z, .okay
.cancel
scf
ret
.okay
and a
ret
GetMenu2::
call LoadMenuHeader
call VerticalMenu
call CloseWindow
ld a, [wMenuCursorY]
ret
CopyNameFromMenu::
push hl
push bc
push af
ld hl, wMenuDataPointer
ld a, [hli]
ld h, [hl]
ld l, a
inc hl
inc hl
pop af
call GetNthString
ld d, h
ld e, l
call CopyName1
pop bc
pop hl
ret
YesNoBox::
lb bc, SCREEN_WIDTH - 6, 7
PlaceYesNoBox::
; Return nc (yes) or c (no).
push bc
ld hl, YesNoMenuHeader
call CopyMenuHeader
pop bc
; This seems to be an overflow prevention,
; but it was coded wrong.
ld a, b
cp SCREEN_WIDTH - 1 - 5
jr nz, .okay ; should this be "jr nc"?
ld a, SCREEN_WIDTH - 1 - 5
ld b, a
.okay
ld a, b
ld [wMenuBorderLeftCoord], a
add 5
ld [wMenuBorderRightCoord], a
ld a, c
ld [wMenuBorderTopCoord], a
add 4
ld [wMenuBorderBottomCoord], a
call PushWindow
InterpretTwoOptionMenu::
call VerticalMenu
push af
ld c, $f
call DelayFrames
call CloseWindow
pop af
jr c, .no
ld a, [wMenuCursorY]
cp 2 ; no
jr z, .no
and a
ret
.no
ld a, 2
ld [wMenuCursorY], a
scf
ret
YesNoMenuHeader::
db MENU_BACKUP_TILES ; flags
menu_coords 10, 5, 15, 9
dw .MenuData
db 1 ; default option
.MenuData:
db STATICMENU_CURSOR | STATICMENU_NO_TOP_SPACING ; flags
db 2
db "YES@"
db "NO@"
OffsetMenuHeader::
call _OffsetMenuHeader
call PushWindow
ret
_OffsetMenuHeader::
push de
call CopyMenuHeader
pop de
ld a, [wMenuBorderLeftCoord]
ld h, a
ld a, [wMenuBorderRightCoord]
sub h
ld h, a
ld a, d
ld [wMenuBorderLeftCoord], a
add h
ld [wMenuBorderRightCoord], a
ld a, [wMenuBorderTopCoord]
ld l, a
ld a, [wMenuBorderBottomCoord]
sub l
ld l, a
ld a, e
ld [wMenuBorderTopCoord], a
add l
ld [wMenuBorderBottomCoord], a
ret
DoNthMenu::
call DrawVariableLengthMenuBox
call MenuWriteText
call InitMenuCursorAndButtonPermissions
call GetStaticMenuJoypad
call GetMenuJoypad
call MenuClickSound
ret
SetUpMenu::
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call DrawVariableLengthMenuBox
call MenuWriteText
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call InitMenuCursorAndButtonPermissions
ld hl, w2DMenuFlags1
set 7, [hl]
ret
DrawVariableLengthMenuBox::
call CopyMenuData
call GetMenuIndexSet
call AutomaticGetMenuBottomCoord
call MenuBox
ret
MenuWriteText::
xor a
ldh [hBGMapMode], a
call GetMenuIndexSet ; sort out the text
call RunMenuItemPrintingFunction ; actually write it
call SafeUpdateSprites
ldh a, [hOAMUpdate]
push af
ld a, $1
ldh [hOAMUpdate], a
call ApplyTilemap
pop af
ldh [hOAMUpdate], a
ret
AutomaticGetMenuBottomCoord::
ld a, [wMenuBorderLeftCoord]
ld c, a
ld a, [wMenuBorderRightCoord]
sub c
ld c, a
ld a, [wMenuDataItems]
add a
inc a
ld b, a
ld a, [wMenuBorderTopCoord]
add b
ld [wMenuBorderBottomCoord], a
ret
GetMenuIndexSet::
ld hl, wMenuDataIndicesPointer
ld a, [hli]
ld h, [hl]
ld l, a
ld a, [wWhichIndexSet]
and a
jr z, .skip
ld b, a
ld c, -1
.loop
ld a, [hli]
cp c
jr nz, .loop
dec b
jr nz, .loop
.skip
ld d, h
ld e, l
ld a, [hl]
ld [wMenuDataItems], a
ret
RunMenuItemPrintingFunction::
call MenuBoxCoord2Tile
ld bc, 2 * SCREEN_WIDTH + 2
add hl, bc
.loop
inc de
ld a, [de]
cp -1
ret z
ld [wMenuSelection], a
push de
push hl
ld d, h
ld e, l
ld hl, wMenuDataDisplayFunctionPointer
call ._hl_
pop hl
ld de, 2 * SCREEN_WIDTH
add hl, de
pop de
jr .loop
._hl_
ld a, [hli]
ld h, [hl]
ld l, a
jp hl
InitMenuCursorAndButtonPermissions::
call InitVerticalMenuCursor
ld hl, wMenuJoypadFilter
ld a, [wMenuDataFlags]
bit 3, a
jr z, .disallow_select
set START_F, [hl]
.disallow_select
ld a, [wMenuDataFlags]
bit 2, a
jr z, .disallow_left_right
set D_LEFT_F, [hl]
set D_RIGHT_F, [hl]
.disallow_left_right
ret
GetScrollingMenuJoypad::
call ScrollingMenuJoypad
ld hl, wMenuJoypadFilter
and [hl]
jr ContinueGettingMenuJoypad
GetStaticMenuJoypad::
xor a
ld [wMenuJoypad], a
call StaticMenuJoypad
ContinueGettingMenuJoypad:
bit A_BUTTON_F, a
jr nz, .a_button
bit B_BUTTON_F, a
jr nz, .b_start
bit START_F, a
jr nz, .b_start
bit D_RIGHT_F, a
jr nz, .d_right
bit D_LEFT_F, a
jr nz, .d_left
xor a
ld [wMenuJoypad], a
jr .done
.d_right
ld a, D_RIGHT
ld [wMenuJoypad], a
jr .done
.d_left
ld a, D_LEFT
ld [wMenuJoypad], a
jr .done
.a_button
ld a, A_BUTTON
ld [wMenuJoypad], a
.done
call GetMenuIndexSet
ld a, [wMenuCursorY]
ld l, a
ld h, 0
add hl, de
ld a, [hl]
ld [wMenuSelection], a
ld a, [wMenuCursorY]
ld [wMenuCursorPosition], a
and a
ret
.b_start
ld a, B_BUTTON
ld [wMenuJoypad], a
ld a, -1
ld [wMenuSelection], a
scf
ret
PlaceMenuStrings::
push de
ld hl, wMenuDataPointerTableAddr
ld a, [hli]
ld h, [hl]
ld l, a
ld a, [wMenuSelection]
call GetNthString
ld d, h
ld e, l
pop hl
call PlaceString
ret
PlaceNthMenuStrings::
push de
ld a, [wMenuSelection]
call GetMenuDataPointerTableEntry
inc hl
inc hl
ld a, [hli]
ld d, [hl]
ld e, a
pop hl
call PlaceString
ret
MenuJumptable::
ld a, [wMenuSelection]
call GetMenuDataPointerTableEntry
ld a, [hli]
ld h, [hl]
ld l, a
jp hl
GetMenuDataPointerTableEntry::
ld e, a
ld d, 0
ld hl, wMenuDataPointerTableAddr
ld a, [hli]
ld h, [hl]
ld l, a
add hl, de
add hl, de
add hl, de
add hl, de
ret
ClearWindowData::
ld hl, wMenuMetadata
call .ClearMenuData
ld hl, wMenuHeader
call .ClearMenuData
ld hl, wMenuData
call .ClearMenuData
ld hl, wMoreMenuData
call .ClearMenuData
ldh a, [rSVBK]
push af
ld a, BANK(wWindowStack)
ldh [rSVBK], a
xor a
ld hl, wWindowStackBottom
ld [hld], a
ld [hld], a
ld a, l
ld [wWindowStackPointer], a
ld a, h
ld [wWindowStackPointer + 1], a
pop af
ldh [rSVBK], a
ret
.ClearMenuData:
ld bc, wMenuMetadataEnd - wMenuMetadata
assert wMenuMetadataEnd - wMenuMetadata == wMenuHeaderEnd - wMenuHeader
assert wMenuMetadataEnd - wMenuMetadata == wMenuDataEnd - wMenuData
assert wMenuMetadataEnd - wMenuMetadata == wMoreMenuDataEnd - wMoreMenuData
xor a
call ByteFill
ret
MenuClickSound::
push af
and A_BUTTON | B_BUTTON
jr z, .nosound
ld hl, wMenuFlags
bit 3, [hl]
jr nz, .nosound
call PlayClickSFX
.nosound
pop af
ret
PlayClickSFX::
push de
ld de, SFX_READ_TEXT_2
call PlaySFX
pop de
ret
MenuTextboxWaitButton::
call MenuTextbox
call WaitButton
call ExitMenu
ret
Place2DMenuItemName::
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ldh [hTempBank], a
ldh a, [hROMBank]
push af
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ldh a, [hTempBank]
rst Bankswitch
call PlaceString
pop af
rst Bankswitch
ret
_2DMenu::
ldh a, [hROMBank]
ld [wMenuData_2DMenuItemStringsBank], a
farcall _2DMenu_
ld a, [wMenuCursorPosition]
ret
InterpretBattleMenu::
ldh a, [hROMBank]
ld [wMenuData_2DMenuItemStringsBank], a
farcall _InterpretBattleMenu
ld a, [wMenuCursorPosition]
ret