1 files changed, 246 insertions, 0 deletions
diff --git a/home/menu_window.asm b/home/menu_window.asm
new file mode 100644
index 0000000..c4d3842
--- /dev/null
+++ b/home/menu_window.asm
@@ -0,0 +1,246 @@
+include "constants.asm"
+
+SECTION "Menu Window Functions", ROM0 [$1bf4]
+
+PushWindow:: ; 00:1bf4
+	ld hl, PlaceWaitingText
+	ld a, $9
+	jp FarCall_hl
+
+ExitMenu:: ; 00:1bfc
+	push af
+	callab _ExitMenu
+	call Function1c0a
+	pop af
+	ret
+
+Function1c0a:: ; 00:1c0a
+	ld a, [wVramState]
+	bit 0, a
+	ret z
+
+	xor a
+	call OpenSRAM
+	hlcoord 0, 0
+	ld de, sSpriteBuffer0
+	ld bc, $168
+	call CopyBytes
+	call CloseSRAM
+
+	call OverworldTextModeSwitch
+
+	xor a
+	call OpenSRAM
+	ld hl, sSpriteBuffer0
+	decoord 0, 0
+	ld bc, $168
+.asm_1c33: ; 00:1c33
+	ld a, [hl]
+	cp $61
+	jr c, .asm_1c39
+	ld [de], a
+.asm_1c39: ; 00:1c39
+	inc hl
+	inc de
+	dec bc
+	ld a, c
+	or b
+	jr nz, .asm_1c33
+	call CloseSRAM
+
+	ret
+
+InitVerticalMenuCursor:: ; 00:1c44
+	jpab _InitVerticalMenuCursor
+
+CloseWindow:: ; 00:1c4c
+	push af
+	call ExitMenu
+	call WaitBGMap
+	call UpdateSprites
+	pop af
+	ret
+
+Function1c58::
+	jpab Function24185
+
+RestoreTileBackup:: ; 00:1c60
+	call MenuBoxCoord2Tile
+	call GetMenuBoxDims
+	inc b
+	inc c
+.asm_1c68: ; 00:1c68
+	push bc
+	push hl
+.asm_1c6a: ; 00:1c6a
+	ld a, [de]
+	ld [hli], a
+	dec de
+	dec c
+	jr nz, .asm_1c6a
+	pop hl
+	ld bc, SCREEN_WIDTH
+	add hl, bc
+	pop bc
+	dec b
+	jr nz, .asm_1c68
+	ret
+
+PopWindow:: ; 00:1c7a
+	ld b, $10
+	ld de, wMenuDataHeader
+.asm_1c7f: ; 00:1c7f
+	ld a, [hld]
+	ld [de], a
+	inc de
+	dec b
+	jr nz, .asm_1c7f
+	ret
+
+GetMenuBoxDims:: ; 00:1c86
+	push hl
+	ld hl, wMenuBorderTopCoord
+	ld a, [hli]
+	ld b, a
+	ld a, [hli]
+	ld c, a
+	ld a, [hli]
+	sub b
+	ld b, a
+	ld a, [hli]
+	sub c
+	ld c, a
+	pop hl
+	ret
+
+CopyMenuData:: ; 00:1c96
+	push hl
+	push de
+	push bc
+	push af
+	ld hl, wMenuDataPointer
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	ld de, wMenuDataFlags
+	ld bc, $10
+	call CopyBytes
+	pop af
+	pop bc
+	pop de
+	pop hl
+	ret
+
+GetWindowStackTop:: ; 00:1cae
+	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:: ; 00:1cb9
+	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]
+	inc de
+	ld b, a
+.asm_1ccc: ; 00:1ccc
+	push bc
+	call PlaceString
+	inc de
+	ld bc, 2 * SCREEN_WIDTH
+	add hl, bc
+	pop bc
+	dec b
+	jr nz, .asm_1ccc
+
+	ld a, [wMenuDataFlags]
+	bit 4, a
+	ret z
+
+	call MenuBoxCoord2Tile
+	ld a, [de]
+	ld c, a
+	inc de
+	ld b, $0
+	add hl, bc
+	jp PlaceString
+
+MenuBox:: ; 00:1ceb
+	call MenuBoxCoord2Tile
+	call GetMenuBoxDims
+	dec b
+	dec c
+	jp DrawTextBox
+
+GetMenuTextStartCoord:: ; 00:1cf6
+	ld a, [wMenuBorderTopCoord]
+	ld b, a
+	inc b
+	ld a, [wMenuBorderLeftCoord]
+	ld c, a
+	inc c
+	ld a, [wMenuDataFlags]
+	bit 6, a
+	jr nz, .asm_1d08
+	inc b
+.asm_1d08: ; 00:1d08
+	ld a, [wMenuDataFlags]
+	bit 7, a
+	jr z, .asm_1d10
+	inc c
+.asm_1d10: ; 00:1d10
+	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:: ; 00:1d2d
+	ld a, [wMenuBorderLeftCoord]
+	ld c, a
+	ld a, [wMenuBorderTopCoord]
+	ld b, a
+Coord2Tile:: ; 00:1d35
+	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