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Main.asm
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1823 lines (1710 loc) · 40.6 KB
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; ======================================
; CryEd - cry editor for Pokémon Crystal
; ======================================
; Defines
include "Defines.asm"
; =============
; Reset vectors
; =============
section "Reset $00",rom0[$00]
CallHL: jp hl
section "Reset $08",rom0[$08]
FillRAM:: jp _FillRAM
section "Reset $10",rom0[$10]
WaitVBlank:: jp _WaitVBlank
section "Reset $18",rom0[$18]
WaitTimer:: jp _WaitTimer
section "Reset $20",rom0[$20]
WaitLCDC:: jp _WaitLCDC
section "Reset $30",rom0[$30]
Panic:: jp _Panic
section "Reset $38",rom0[$38]
GenericTrap::
xor a
jp _Panic
; ==================
; Interrupt handlers
; ==================
section "VBlank IRQ",rom0[$40]
IRQ_VBlank:: jp DoVBlank
section "STAT IRQ",rom0[$48]
IRQ_Stat:: jp DoStat
section "Timer IRQ",rom0[$50]
IRQ_Timer:: jp DoTimer
section "Serial IRQ",rom0[$58]
IRQ_Serial:: reti ; not used
section "Joypad IRQ",rom0[$60]
IRQ_Joypad:: reti ; not used
; ===============
; System routines
; ===============
include "SystemRoutines.asm"
; ==========
; ROM header
; ==========
section "ROM header",rom0[$100]
EntryPoint::
nop
jp ProgramStart
NintendoLogo: ; DO NOT MODIFY OR ROM WILL NOT BOOT!!!
db $ce,$ed,$66,$66,$cc,$0d,$00,$0b,$03,$73,$00,$83,$00,$0c,$00,$0d
db $00,$08,$11,$1f,$88,$89,$00,$0e,$dc,$cc,$6e,$e6,$dd,$dd,$d9,$99
db $bb,$bb,$67,$63,$6e,$0e,$ec,$cc,$dd,$dc,$99,$9f,$bb,$b9,$33,$3e
ROMTitle: romTitle "CRYED" ; ROM title (15 bytes)
GBCSupport: db $00 ; GBC support (0 = DMG only, $80 = DMG/GBC, $C0 = GBC only)
NewLicenseCode: db "DS" ; new license code (2 bytes)
SGBSupport: db 0 ; SGB support
CartType: db $1b ; Cart type, see hardware.inc for a list of values
ROMSize: ds 1 ; ROM size (handled by post-linking tool)
RAMSize: db 2 ; RAM size
DestCode: db 1 ; Destination code (0 = Japan, 1 = All others)
OldLicenseCode: db $33 ; Old license code (if $33, check new license code)
ROMVersion: db 0 ; ROM version
HeaderChecksum: ds 1 ; Header checksum (handled by post-linking tool)
ROMChecksum: ds 2 ; ROM checksum (2 bytes) (handled by post-linking tool)
; =====================
; Start of program code
; =====================
ProgramStart::
di
ld sp,$e000
push bc
push af
; disable LCD
.wait
ldh a,[rLY]
cp $90
jr nz,.wait
xor a
ldh [rLCDC],a
; init memory
ld hl,$c000 ; start of WRAM
ld bc,$1ffa ; don't clear stack
xor a
rst $08
ld hl,$8000 ; start of VRAM
ld bc,$2000
xor a
rst $08
; clear HRAM
ld bc,$7f80
xor a
.loop
ld [c],a
inc c
dec b
jr nz,.loop
call CopyDMARoutine
call $ff80 ; clear OAM
call LoadSaveScreen_SRAMCheck
jr nc,.noinitsram
ld a,$a
ld [rRAMG],a
xor a
ld hl,$a000
ld bc,$2000
rst $08
ld hl,.savestr
ld de,$a600
ld b,5
.strloop
ld a,[hl+]
ld [de],a
inc de
dec b
jr nz,.strloop
xor a
ld [$0000],a
jr .noinitsram
.savestr
db "SAVE!"
.noinitsram
; check GB type
; sets sys_GBType to 0 if DMG/SGB/GBP/GBL/SGB2, 1 if GBC, 2 if GBA/GBA SP/GB Player
; TODO: Improve checks to allow for GBP/SGB/SGB2 to be detected separately
pop af
pop bc
cp $11
jr nz,.dmg
.gbc
and 1 ; a = 1
add b ; b = 1 if on GBA
ld [sys_GBType],a
jr .continue
.dmg
xor a
ld [sys_GBType],a
.continue
InitCryEditor::
rst $10
xor a
ldh [rLCDC],a
ld a,9
ld [sys_MenuMax],a
xor a
ld [sys_MenuPos],a
call MapSetup_Sound_Off
; load font + graphics
CopyTileset1BPP Font,0,98
ld hl,CryEditorTilemap
call LoadMapText
; init rendering variables
SetDMGPal rBGP, 0,1,2,3
SetDMGPal rOBP0,0,0,2,3
SetDMGPal rOBP1,0,1,2,3
xor a
ldh [rSCX],a
ldh [rSCY],a
ldh [rWX],a
ldh [rWY],a
ld a,%10010001
ldh [rLCDC],a
ld a,IEF_VBLANK
ldh [rIE],a
ei
halt
CryEditorLoop::
ld a,[sys_btnPress]
bit btnA,a
jr nz,.playCry
bit btnStart,a
jr nz,.playCry
bit btnB,a
jr nz,.resetCry
bit btnSelect,a
jp nz,InitOptionsMenu
ld hl,sys_MenuPos
bit btnUp,a
jr nz,.editUp
bit btnDown,a
jr nz,.editDown
bit btnRight,a
jr nz,.cursorNext
bit btnLeft,a
jr nz,.cursorPrev
jr .continue
.resetCry
xor a
ld hl,CryEdit_CryBase
ld [hl+],a
ld [hl+],a
ld [hl+],a
ld [hl+],a
ld [hl+],a
jr .continue
.playCry
ld hl,CryEdit_CryBase
ld d,0
ld e,[hl]
inc hl
ld a,[hl+]
ld [wCryPitch],a
ld a,[hl+]
ld [wCryPitch+1],a
ld a,[hl+]
ld [wCryLength],a
ld a,[hl+]
ld [wCryLength+1],a
call CryEd_PreviewCry
jr .continue
.editUp
ld e,1
call CryEdit_EditNybble
jr .continue
.editDown
ld e,0
call CryEdit_EditNybble
jr .continue
.setItem
ld [hl],b
jr .continue
.cursorNext
ld b," "-32
call CryEditor_DrawCursor
inc [hl]
ld b,[hl]
ld a,[sys_MenuMax]
inc a
cp b
jr nz,.setItem
ld [hl],0
jr .continue
.cursorPrev
ld b," "-32
call CryEditor_DrawCursor
dec [hl]
ld a,[hl]
cp $ff
ld b,a
jr nz,.setItem
ld a,[sys_MenuMax]
ld [hl],a
; fall through to .continue
.continue
ld b,"^"-32
call CryEditor_DrawCursor
ld a,[CryEdit_CryBase]
ld hl,$9831
call DrawHex
ld a,[CryEdit_CryPitch+1]
ld hl,$986f
call DrawHex
ld a,[CryEdit_CryPitch]
call DrawHex
ld a,[CryEdit_CryLength+1]
ld hl,$98af
call DrawHex
ld a,[CryEdit_CryLength]
call DrawHex
halt
call UpdateSound
jp CryEditorLoop
; INPUT: b = char to use for cursor
; Destroys A.
CryEditor_DrawCursor::
push hl
ld a,[sys_MenuPos]
ld hl,CryEdit_CursorLocations
add a
add l
ld l,a
jr nc,.nocarry
inc h
.nocarry
ld a,[hl+]
ld h,[hl]
ld l,a
; write char
WaitForVRAM
ld [hl],b
pop hl
ret
CryEdit_EditNybble:
ld a,[sys_MenuPos]
ld b,a
add a
add b
ld hl,CryEdit_NybbleLocations
add l
ld l,a
jr nc,.nocarry
inc h
.nocarry
ld a,[hl+]
ld d,a
ld a,[hl+]
ld h,[hl]
ld l,a
ld a,d
and a
jr nz,.uppernybble
.lowernybble
ld a,e
and a
jr z,.sub1
jr .add1
.uppernybble
ld a,e
and a
jr z,.sub10
jr .add10
.add1
inc [hl]
ld a,[hl]
and $f
cp 0
ret nz
ld a,[hl]
sub $10
ld [hl],a
ret
.sub1
dec [hl]
ld a,[hl]
and $f
cp $f
ret nz
ld a,[hl]
add $10
ld [hl],a
ret
.add10
ld a,[hl]
add $10
ld [hl],a
ret
.sub10
ld a,[hl]
sub $10
ld [hl],a
ret
CryEdit_CursorLocations:
dw $9851,$9852 ; base
dw $988f,$9890,$9891,$9892 ; pitch
dw $98cf,$98d0,$98d1,$98d2 ; length
CryEdit_NybbleLocations:
dbw 1,CryEdit_CryBase
dbw 0,CryEdit_CryBase
dbw 1,CryEdit_CryPitch+1
dbw 0,CryEdit_CryPitch+1
dbw 1,CryEdit_CryPitch
dbw 0,CryEdit_CryPitch
dbw 1,CryEdit_CryLength+1
dbw 0,CryEdit_CryLength+1
dbw 1,CryEdit_CryLength
dbw 0,CryEdit_CryLength
Menu_DrawCursor::
push af
ld h,0
ld a,[sys_MenuPos]
ld l,a
add hl,hl ; x2
add hl,hl ; x4
add hl,hl ; x8
add hl,hl ; x16
add hl,hl ; x32
ld b,h
ld c,l
ld hl,$9861
add hl,bc
WaitForVRAM
pop af
ld [hl],a
ret
CryEditorTilemap::
; ####################
db " "
db " Base: $?? "
db " "
db " Pitch: $???? "
db " "
db " Length: $???? "
db " "
db " - CONTROLS - "
db "Left/Right Cursor"
db "Up/Down Edit value"
db "A/Start Test"
db "B Reset"
db "Select Menu"
db " "
db "Build date: "
.datestart
db __DATE__
.dateend
rept 20-(.dateend-.datestart)
db 20
endr
.timestart
db __TIME__
.timeend
rept 20-(.timeend-.timestart)
db 20
endr
db " "
; ####################
; ================================
InitOptionsMenu::
rst $10
xor a
ldh [rLCDC],a
ld a,2
ld [sys_MenuMax],a
xor a
ld [sys_MenuPos],a
call MapSetup_Sound_Off
; load font + graphics
CopyTileset1BPP Font,0,98
ld hl,OptionsMenuTilemap
call LoadMapText
xor a
call Options_PrintDescription
; init rendering variables
SetDMGPal rBGP, 0,1,2,3
SetDMGPal rOBP0,0,0,2,3
SetDMGPal rOBP1,0,1,2,3
xor a
ldh [rSCX],a
ldh [rSCY],a
ldh [rWX],a
ldh [rWY],a
ld a,%10010001
ldh [rLCDC],a
ld a,IEF_VBLANK
ldh [rIE],a
ei
ld de,6 ; SFX_MENU
call PlaySFX
halt
OptionsMenuLoop::
ld a,[sys_btnPress]
bit btnA,a
jr nz,.selectItem
bit btnB,a
jp nz,InitCryEditor
bit btnStart,a
jr nz,.selectItem
bit btnSelect,a
jr nz,.nextItem
bit btnUp,a
jr nz,.prevItem
bit btnDown,a
jr z,.continue
.nextItem
ld a," "-$20
call Menu_DrawCursor
ld a,[sys_MenuPos]
inc a
ld b,a
ld a,[sys_MenuMax]
inc a
cp b
ld a,b
jr nz,.setItem
xor a
.setItem
ld [sys_MenuPos],a
call Options_PrintDescription
jr .continue
.prevItem
ld a," "-$20
call Menu_DrawCursor
ld a,[sys_MenuPos]
dec a
cp $ff
jr nz,.setItem
ld a,[sys_MenuMax]
jr .setItem
.selectItem
ld hl,MenuItemPtrs_OptionsMenu
ld a,[sys_MenuPos]
add a
add l
ld l,a
jr nc,.nocarry
inc h
.nocarry
ld de,7 ; SFX_READ_TEXT
call PlaySFX
push af
; wait for SFX to finish playing
.waitSFX
call UpdateSound
halt
call IsSFXPlaying
jr nc,.waitSFX
call PtrToHL
rst $00
.continue
ld a,">"-$20
call Menu_DrawCursor
call UpdateSound
halt
jr OptionsMenuLoop
MenuItemPtrs_OptionsMenu::
dw .importCry
dw .loadSaveCry
dw .exit
.importCry
pop hl ; stack overflow prevention
jp InitCryImporter
.loadSaveCry
pop hl ; stack overflow prevention
xor a
jp InitLoadSaveScreen
.exit
pop hl ; stack overflow prevention
jp InitCryEditor
OptionsMenuTilemap::
; ####################
db " "
db " - OPTIONS - "
db " "
db " Import cry "
db " Load/save cry "
db " Exit "
db " "
db " "
db " "
db " "
db " "
db " "
db " "
db " "
db "DESCRIPTION LINE 1 "
db "DESCRIPTION LINE 2 "
db "DESCRIPTION LINE 3 "
db "DESCRIPTION LINE 4 "
OptionsMenu_DescriptionPointers:
dw .importCry
dw .loadSaveCry
dw .exit
.importCry
db "Import an existing "
db "cry. "
db " "
db " "
.loadSaveCry
db "Load or save a cry. "
db " "
db " "
db " "
.exit
db "Return to the cry "
db "editor. "
db " "
db " "
Options_PrintDescription:
ld bc,OptionsMenu_DescriptionPointers
ld h,0
ld l,a
add hl,hl
add hl,bc
ld a,[hl+]
ld h,[hl]
ld l,a
ld de,$99c0
ld bc,$414
.loop
ld a,[hl+]
sub 32
push af
WaitForVRAM
pop af
ld [de],a
inc de
dec c
jr nz,.loop
ld c,$14
ld a,e
add $c
jr nc,.continue
inc d
.continue
ld e,a
dec b
jr nz,.loop
ret
; ================
; Load/save screen
; ================
InitLoadSaveScreen:
rst $10
xor a
ldh [rLCDC],a
ld [sys_MenuPos],a
ld a,[SelectedSaveSlot]
ld [sys_MenuMax],a ; sys_MenuMax is repurposed as currently selected save slot
call MapSetup_Sound_Off
; load font + graphics
CopyTileset1BPP Font,0,98
CopyTileset1BPPInvert Font,$800,98
ld hl,LoadSaveScreenTilemap
call LoadMapText
xor a
ld hl,msg_dummy
call LoadSaveScreen_PrintLine
inc a
ld hl,msg_dummy
call LoadSaveScreen_PrintLine
; init rendering variables
SetDMGPal rBGP, 0,1,2,3
SetDMGPal rOBP0,0,0,2,3
SetDMGPal rOBP1,0,1,2,3
xor a
ldh [rSCX],a
ldh [rSCY],a
ldh [rWX],a
ldh [rWY],a
ld a,%10010001
ldh [rLCDC],a
ld a,IEF_VBLANK
ldh [rIE],a
ei
halt
LoadSaveScreenLoop:
call UpdateSound
ld hl,sys_MenuMax
ld a,[sys_btnPress]
bit btnA,a
jp nz,.selectSlot
bit btnB,a
jr nz,.exit
bit btnSelect,a
jr nz,.previewCry
bit btnUp,a
jr nz,.add16
bit btnDown,a
jr nz,.sub16
bit btnRight,a
jr nz,.add1
bit btnLeft,a
jr nz,.sub1
.continue
ld a,[sys_MenuMax]
ld [SelectedSaveSlot],a
ld hl,$9871
call DrawHex
halt
jr LoadSaveScreenLoop
.previewCry
call LoadSaveScreen_SRAMCheck
jr c,.previewfail
ld a,[sys_MenuMax]
call LoadSaveScreen_GetPtr
ld a,$a
ld [rRAMG],a
push hl
call LoadSave_CheckIfCryExists
jp nc,.crydoesntexist
pop hl
ld a,[hl+]
ld d,0
ld e,a
inc hl
ld a,[hl+]
ld [wCryPitch],a
ld a,[hl+]
ld [wCryPitch+1],a
ld a,[hl+]
ld [wCryLength],a
ld a,[hl+]
ld [wCryLength+1],a
call CryEd_PreviewCry
jr .continue
.previewfail
call MapSetup_Sound_Off
ld de,$19 ; SFX_WRONG
call PlaySFX
ld hl,msg_previewfail
jp .doprintmessage
.sub1
dec [hl]
jr .continue
.add1
inc [hl]
jr .continue
.sub16
ld a,[hl]
sub 16
ld [hl],a
jr .continue
.add16
ld a,[hl]
add 16
ld [hl],a
jr .continue
.exit
call MapSetup_Sound_Off
ld de,$e
call PlaySFX
.waitSFX
call UpdateSound
halt
call IsSFXPlaying
jr nc,.waitSFX
jp InitCryEditor
.selectSlot
call MapSetup_Sound_Off
ld de,$7
call PlaySFX
.loop1
xor a
ld hl,msg_loadsave
call LoadSaveScreen_PrintLine
inc a
ld hl,prompt_loadsave
call LoadSaveScreen_PrintLine
call LoadSaveScreen_WaitForPrompt
cp $ff
jp z,.cancel
and a
jp nz,.doSave
dec a
jr nz,.doLoad
jp .continue
.doLoad
call LoadSaveScreen_SRAMCheck
jr c,.loadfail
call LoadSaveScreen_GetPtr
ld a,$a
ld [rRAMG],a
push hl
call LoadSave_CheckIfCryExists
jr nc,.crydoesntexist
pop hl
ld a,[hl+]
ld [CryEdit_CryBase],a
inc hl
ld a,[hl+]
ld [CryEdit_CryPitch],a
ld a,[hl+]
ld [CryEdit_CryPitch+1],a
ld a,[hl+]
ld [CryEdit_CryLength],a
ld a,[hl]
ld [CryEdit_CryLength+1],a
xor a
ld [rRAMG],a
call MapSetup_Sound_Off
ld de,$22
call PlaySFX
ld hl,msg_loaded
jr .doprintmessage
.crydoesntexist
xor a
ld [rRAMG],a
call MapSetup_Sound_Off
ld de,$19 ; SFX_WRONG
call PlaySFX
ld hl,msg_slotempty
jr .doprintmessage
.loadfail
call MapSetup_Sound_Off
ld de,$19 ; SFX_WRONG
call PlaySFX
ld hl,msg_loadfail
jr .doprintmessage
.savefail
xor a
ld [rRAMG],a
call MapSetup_Sound_Off
ld de,$19 ; SFX_WRONG
call PlaySFX
ld hl,msg_savefail
.doprintmessage
xor a
call LoadSaveScreen_PrintLine
inc a
ld hl,msg_dummy
call LoadSaveScreen_PrintLine
call LoadSaveScreen_WaitForButton
ld b,60
.loop
push bc
call UpdateSound
halt
pop bc
dec b
jr nz,.loop
; fall through to .cancel
.cancel
xor a
ld [rRAMG],a
ld hl,msg_dummy
call LoadSaveScreen_PrintLine
inc a
ld hl,msg_dummy
call LoadSaveScreen_PrintLine
jp .continue
.doSave
; save check
ld a,$a
ld [rRAMG],a
ld hl,$a606
ld a,$ed
ld [hl],a
ld b,a
ld a,[hl]
cp b
jr nz,.savefail
ld a,[sys_MenuMax]
call LoadSaveScreen_GetPtr
push hl
; check if cry exists
call LoadSave_CheckIfCryExists
jr nc,.crydoesntexist2
xor a
ld hl,msg_overwrite
call LoadSaveScreen_PrintLine
inc a
ld hl,prompt_yesno
call LoadSaveScreen_PrintLine
call MapSetup_Sound_Off
ld de,$7
call PlaySFX
call LoadSaveScreen_WaitForPrompt
cp $ff
jr z,.cancel
and a
jr nz,.crydoesntexist2
jr .cancel
.crydoesntexist2
pop de
ld hl,CryEdit_CryBase
ld a,[hl+]
ld [de],a
inc de
inc de
ld b,4
.saveloop
ld a,[hl+]
ld [de],a
inc de
dec b
jr nz,.saveloop
xor a
ld [rRAMG],a
call MapSetup_Sound_Off
ld de,$22
call PlaySFX
ld hl,msg_saved
jp .doprintmessage
; carry = 1 if cry exists
LoadSave_CheckIfCryExists:
ld b,3
.loop
ld c,0
ld a,[hl+]
add c
ld c,a
ld a,[hl+]
add c
ld c,a
cp 0
jr nz,.exists
dec b
jr nz,.loop
and a ; clear carry
ret
.exists
scf
ret
LoadSaveScreen_GetPtr:
ld a,[sys_MenuMax]
ld e,a
ld d,0
ld hl,$a000
add hl,de
add hl,de
add hl,de
add hl,de
add hl,de
add hl,de
ret
LoadSaveScreen_SRAMCheck:
ld a,$a
ld [rRAMG],a ; enable SRAM
ld hl,$a600
ld b,5
ld c,0
.loop
ld a,[hl+]
add c
ld c,a
dec b
jr nz,.loop
xor a
ld [rRAMG],a
ld a,c
cp $50
scf
ret nz ; return carry = 1 if check failed
ccf ; return carry = 0 if check passed
ret
LoadSaveScreen_WaitForButton:
call UpdateSound
halt
ld a,[sys_btnPress]
and a
jr nz,LoadSaveScreen_WaitForButton
ret
; OUTPUT: 0 if item 1 selected, 1 if item 2 selected, $ff if user cancelled
LoadSaveScreen_WaitForPrompt:
xor a
ld [sys_MenuPos],a
halt
.loop
ld a,[sys_btnPress]
bit btnLeft,a
jr nz,.toggle
bit btnRight,a
jr nz,.toggle
bit btnA,a
jr nz,.select
bit btnB,a
jr nz,.cancel
.continue
ld a,[sys_MenuPos]
and a
jr nz,.right