ref: 9ee2b592083ebaa9fd141406d4c90d5604460c69
dir: /home/menu.asm/
; Functions used in displaying and handling menus. LoadMenuHeader:: call CopyMenuHeader call PushWindow ret CopyMenuHeader:: ld de, wMenuHeader ld bc, wMenuHeaderEnd - wMenuHeader call CopyBytes ldh a, [hROMBank] ld [wMenuDataBank], a ret StoreTo_wMenuCursorBuffer:: ld [wMenuCursorBuffer], a ret MenuTextBox:: push hl call LoadMenuTextBox pop hl jp PrintText ; unused ret 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:: jr _YesNoBox PlaceGenericTwoOptionBox:: call LoadMenuHeader jr InterpretTwoOptionMenu _YesNoBox:: ; 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 - 6 jr nz, .okay ; should this be "jr nc"? ld a, SCREEN_WIDTH - 6 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:: call DrawVariableLengthMenuBox ; ??? call MenuWriteText call InitMenuCursorAndButtonPermissions ; set up selection pointer 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 [wMenuCursorBuffer], 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 Unreferenced_Function1f9e:: call GetMenuDataPointerTableEntry inc hl inc hl ld a, [hli] ld d, [hl] ld e, a 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, wWindowStackPointer call .bytefill ld hl, wMenuHeader call .bytefill ld hl, wMenuDataFlags call .bytefill ld hl, w2DMenuCursorInitY call .bytefill 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 .bytefill ld bc, $10 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:: ldh [hBuffer], a ldh a, [hROMBank] push af ldh a, [hBuffer] rst Bankswitch call PlaceString pop af rst Bankswitch ret _2DMenu:: ldh a, [hROMBank] ld [wMenuData_2DMenuItemStringsBank], a farcall _2DMenu_ ld a, [wMenuCursorBuffer] ret InterpretBattleMenu:: ldh a, [hROMBank] ld [wMenuData_2DMenuItemStringsBank], a farcall _InterpretBattleMenu ld a, [wMenuCursorBuffer] ret InterpretMobileMenu:: ldh a, [hROMBank] ld [wMenuData_2DMenuItemStringsBank], a farcall _InterpretMobileMenu ld a, [wMenuCursorBuffer] ret