709 lines
13 KiB
NASM
Executable File
709 lines
13 KiB
NASM
Executable File
LoadSAV:
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;(if carry -> write
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;"the file data is destroyed")
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call ClearScreen
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call LoadFontTilePatterns
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call LoadTextBoxTilePatterns
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call LoadSAV0
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jr c, .badsum
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call LoadSAV1
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jr c, .badsum
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call LoadSAV2
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jr c, .badsum
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ld a, $2 ; good checksum
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jr .goodsum
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.badsum
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ld hl, wd730
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push hl
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set 6, [hl]
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ld hl, FileDataDestroyedText
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call PrintText
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ld c, 100
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call DelayFrames
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pop hl
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res 6, [hl]
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ld a, $1 ; bad checksum
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.goodsum
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ld [wSaveFileStatus], a
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ret
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FileDataDestroyedText:
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TX_FAR _FileDataDestroyedText
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db "@"
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LoadSAV0:
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamBank], a
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ld hl, sPlayerName ; hero name located in SRAM
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ld bc, sMainDataCheckSum - sPlayerName ; but here checks the full SAV
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call SAVCheckSum
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ld c, a
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ld a, [sMainDataCheckSum] ; SAV's checksum
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cp c
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jp z, .checkSumsMatched
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; If the computed checksum didn't match the saved on, try again.
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ld hl, sPlayerName
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ld bc, sMainDataCheckSum - sPlayerName
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call SAVCheckSum
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ld c, a
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ld a, [sMainDataCheckSum] ; SAV's checksum
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cp c
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jp nz, SAVBadCheckSum
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.checkSumsMatched
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ld hl, sPlayerName
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ld de, wPlayerName
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ld bc, NAME_LENGTH
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call CopyData
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ld hl, sMainData
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ld de, wMainDataStart
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ld bc, wMainDataEnd - wMainDataStart
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call CopyData
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ld hl, wCurMapTileset
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set 7, [hl]
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ld hl, sSpriteData
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ld de, wSpriteDataStart
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ld bc, wSpriteDataEnd - wSpriteDataStart
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call CopyData
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ld a, [sTilesetType]
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ld [hTilesetType], a
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ld hl, sCurBoxData
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ld de, wBoxDataStart
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ld bc, wBoxDataEnd - wBoxDataStart
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call CopyData
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and a
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jp SAVGoodChecksum
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LoadSAV1:
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamBank], a
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ld hl, sPlayerName ; hero name located in SRAM
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ld bc, sMainDataCheckSum - sPlayerName ; but here checks the full SAV
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call SAVCheckSum
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ld c, a
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ld a, [sMainDataCheckSum] ; SAV's checksum
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cp c
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jr nz, SAVBadCheckSum
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ld hl, sCurBoxData
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ld de, wBoxDataStart
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ld bc, wBoxDataEnd - wBoxDataStart
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call CopyData
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and a
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jp SAVGoodChecksum
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LoadSAV2:
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamBank], a
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ld hl, sPlayerName ; hero name located in SRAM
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ld bc, sMainDataCheckSum - sPlayerName ; but here checks the full SAV
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call SAVCheckSum
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ld c, a
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ld a, [sMainDataCheckSum] ; SAV's checksum
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cp c
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jp nz, SAVBadCheckSum
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ld hl, sPartyData
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ld de, wPartyDataStart
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ld bc, wPartyDataEnd - wPartyDataStart
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call CopyData
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ld hl, sMainData
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ld de, wPokedexOwned
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ld bc, wPokedexSeenEnd - wPokedexOwned
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call CopyData
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and a
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jp SAVGoodChecksum
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SAVBadCheckSum:
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scf
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SAVGoodChecksum:
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ld a, $0
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamEnable], a
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ret
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LoadSAVIgnoreBadCheckSum:
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; unused function that loads save data and ignores bad checksums
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call LoadSAV0
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call LoadSAV1
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jp LoadSAV2
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SaveSAV:
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callba PrintSaveScreenText
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ld hl, WouldYouLikeToSaveText
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call SaveSAVConfirm
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and a ;|0 = Yes|1 = No|
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ret nz
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ld a, [wSaveFileStatus]
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dec a
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jr z, .save
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call SAVCheckRandomID
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jr z, .save
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ld hl, OlderFileWillBeErasedText
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call SaveSAVConfirm
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and a
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ret nz
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.save
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call SaveSAVtoSRAM
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coord hl, 1, 13
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lb bc, 4, 18
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call ClearScreenArea
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coord hl, 1, 14
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ld de, NowSavingString
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call PlaceString
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ld c, 120
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call DelayFrames
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ld hl, GameSavedText
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call PrintText
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ld a, SFX_SAVE
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call PlaySoundWaitForCurrent
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call WaitForSoundToFinish
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ld c, 30
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jp DelayFrames
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NowSavingString:
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db "Now saving...@"
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SaveSAVConfirm:
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call PrintText
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coord hl, 0, 7
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lb bc, 8, 1
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ld a, TWO_OPTION_MENU
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ld [wTextBoxID], a
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call DisplayTextBoxID ; yes/no menu
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ld a, [wCurrentMenuItem]
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ret
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WouldYouLikeToSaveText:
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TX_FAR _WouldYouLikeToSaveText
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db "@"
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GameSavedText:
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TX_FAR _GameSavedText
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db "@"
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OlderFileWillBeErasedText:
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TX_FAR _OlderFileWillBeErasedText
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db "@"
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SaveSAVtoSRAM0:
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamBank], a
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ld hl, wPlayerName
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ld de, sPlayerName
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ld bc, NAME_LENGTH
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call CopyData
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ld hl, wMainDataStart
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ld de, sMainData
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ld bc, wMainDataEnd - wMainDataStart
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call CopyData
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ld hl, wSpriteDataStart
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ld de, sSpriteData
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ld bc, wSpriteDataEnd - wSpriteDataStart
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call CopyData
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ld hl, wBoxDataStart
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ld de, sCurBoxData
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ld bc, wBoxDataEnd - wBoxDataStart
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call CopyData
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ld a, [hTilesetType]
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ld [sTilesetType], a
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ld hl, sPlayerName
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ld bc, sMainDataCheckSum - sPlayerName
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call SAVCheckSum
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ld [sMainDataCheckSum], a
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xor a
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamEnable], a
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ret
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SaveSAVtoSRAM1:
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; stored pokémon
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamBank], a
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ld hl, wBoxDataStart
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ld de, sCurBoxData
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ld bc, wBoxDataEnd - wBoxDataStart
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call CopyData
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ld hl, sPlayerName
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ld bc, sMainDataCheckSum - sPlayerName
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call SAVCheckSum
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ld [sMainDataCheckSum], a
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xor a
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamEnable], a
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ret
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SaveSAVtoSRAM2:
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamBank], a
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ld hl, wPartyDataStart
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ld de, sPartyData
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ld bc, wPartyDataEnd - wPartyDataStart
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call CopyData
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ld hl, wPokedexOwned ; pokédex only
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ld de, sMainData
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ld bc, wPokedexSeenEnd - wPokedexOwned
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call CopyData
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ld hl, sPlayerName
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ld bc, sMainDataCheckSum - sPlayerName
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call SAVCheckSum
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ld [sMainDataCheckSum], a
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xor a
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamEnable], a
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ret
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SaveSAVtoSRAM:
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ld a, $2
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ld [wSaveFileStatus], a
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call SaveSAVtoSRAM0
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call SaveSAVtoSRAM1
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jp SaveSAVtoSRAM2
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SAVCheckSum:
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;Check Sum (result[1 byte] is complemented)
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ld d, 0
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.loop
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ld a, [hli]
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add d
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ld d, a
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dec bc
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ld a, b
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or c
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jr nz, .loop
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ld a, d
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cpl
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ret
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CalcIndividualBoxCheckSums:
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ld hl, sBox1 ; sBox7
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ld de, sBank2IndividualBoxChecksums ; sBank3IndividualBoxChecksums
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ld b, NUM_BOXES / 2
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.loop
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push bc
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push de
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ld bc, wBoxDataEnd - wBoxDataStart
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call SAVCheckSum
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pop de
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ld [de], a
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inc de
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pop bc
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dec b
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jr nz, .loop
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ret
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GetBoxSRAMLocation:
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; in: a = box num
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; out: b = box SRAM bank, hl = pointer to start of box
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ld hl, BoxSRAMPointerTable
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ld a, [wCurrentBoxNum]
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and $7f
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cp NUM_BOXES / 2
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ld b, 2
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jr c, .next
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inc b
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sub NUM_BOXES / 2
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.next
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ld e, a
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ld d, 0
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add hl, de
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add hl, de
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ld a, [hli]
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ld h, [hl]
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ld l, a
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ret
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BoxSRAMPointerTable:
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dw sBox1 ; sBox7
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dw sBox2 ; sBox8
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dw sBox3 ; sBox9
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dw sBox4 ; sBox10
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dw sBox5 ; sBox11
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dw sBox6 ; sBox12
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ChangeBox::
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ld hl, WhenYouChangeBoxText
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call PrintText
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call YesNoChoice
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ld a, [wCurrentMenuItem]
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and a
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ret nz ; return if No was chosen
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ld hl, wCurrentBoxNum
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bit 7, [hl] ; is it the first time player is changing the box?
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call z, EmptyAllSRAMBoxes ; if so, empty all boxes in SRAM
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call DisplayChangeBoxMenu
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call UpdateSprites
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ld hl, hFlags_0xFFF6
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set 1, [hl]
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call HandleMenuInput
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ld hl, hFlags_0xFFF6
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res 1, [hl]
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bit 1, a ; pressed b
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ret nz
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call GetBoxSRAMLocation
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ld e, l
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ld d, h
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ld hl, wBoxDataStart
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call CopyBoxToOrFromSRAM ; copy old box from WRAM to SRAM
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ld a, [wCurrentMenuItem]
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set 7, a
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ld [wCurrentBoxNum], a
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call GetBoxSRAMLocation
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ld de, wBoxDataStart
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call CopyBoxToOrFromSRAM ; copy new box from SRAM to WRAM
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ld hl, wMapTextPtr
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ld de, wChangeBoxSavedMapTextPointer
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ld a, [hli]
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ld [de], a
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inc de
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ld a, [hl]
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ld [de], a
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call RestoreMapTextPointer
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call SaveSAVtoSRAM
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ld hl, wChangeBoxSavedMapTextPointer
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call SetMapTextPointer
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ld a, SFX_SAVE
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call PlaySoundWaitForCurrent
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call WaitForSoundToFinish
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ret
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WhenYouChangeBoxText:
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TX_FAR _WhenYouChangeBoxText
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db "@"
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CopyBoxToOrFromSRAM:
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; copy an entire box from hl to de with b as the SRAM bank
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push hl
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld a, b
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ld [MBC1SRamBank], a
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ld bc, wBoxDataEnd - wBoxDataStart
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call CopyData
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pop hl
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; mark the memory that the box was copied from as am empty box
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xor a
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ld [hli], a
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dec a
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ld [hl], a
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ld hl, sBox1 ; sBox7
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ld bc, sBank2AllBoxesChecksum - sBox1
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call SAVCheckSum
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ld [sBank2AllBoxesChecksum], a ; sBank3AllBoxesChecksum
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call CalcIndividualBoxCheckSums
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xor a
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamEnable], a
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ret
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DisplayChangeBoxMenu:
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xor a
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ld [H_AUTOBGTRANSFERENABLED], a
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ld a, A_BUTTON | B_BUTTON
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ld [wMenuWatchedKeys], a
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ld a, 11
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ld [wMaxMenuItem], a
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ld a, 1
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ld [wTopMenuItemY], a
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ld a, 12
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ld [wTopMenuItemX], a
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xor a
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ld [wMenuWatchMovingOutOfBounds], a
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ld a, [wCurrentBoxNum]
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and $7f
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ld [wCurrentMenuItem], a
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ld [wLastMenuItem], a
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coord hl, 0, 0
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ld b, 2
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ld c, 9
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call TextBoxBorder
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ld hl, ChooseABoxText
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call PrintText
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coord hl, 11, 0
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ld b, 12
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ld c, 7
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call TextBoxBorder
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ld hl, hFlags_0xFFF6
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set 2, [hl]
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ld de, BoxNames
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coord hl, 13, 1
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call PlaceString
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ld hl, hFlags_0xFFF6
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res 2, [hl]
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ld a, [wCurrentBoxNum]
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and $7f
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cp 9
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jr c, .singleDigitBoxNum
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sub 9
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coord hl, 8, 2
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ld [hl], "1"
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add "0"
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jr .next
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.singleDigitBoxNum
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add "1"
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.next
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Coorda 9, 2
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coord hl, 1, 2
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ld de, BoxNoText
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call PlaceString
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call GetMonCountsForAllBoxes
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coord hl, 18, 1
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ld de, wBoxMonCounts
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ld bc, SCREEN_WIDTH
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ld a, $c
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.loop
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push af
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ld a, [de]
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and a ; is the box empty?
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jr z, .skipPlacingPokeball
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ld [hl], $78 ; place pokeball tile next to box name if box not empty
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.skipPlacingPokeball
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add hl, bc
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inc de
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pop af
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dec a
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jr nz, .loop
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ld a, 1
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ld [H_AUTOBGTRANSFERENABLED], a
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ret
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ChooseABoxText:
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TX_FAR _ChooseABoxText
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db "@"
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BoxNames:
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db "BOX 1"
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next "BOX 2"
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next "BOX 3"
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next "BOX 4"
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next "BOX 5"
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next "BOX 6"
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next "BOX 7"
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next "BOX 8"
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next "BOX 9"
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next "BOX10"
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next "BOX11"
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next "BOX12@"
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BoxNoText:
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db "BOX No.@"
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EmptyAllSRAMBoxes:
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; marks all boxes in SRAM as empty (initialisation for the first time the
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; player changes the box)
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld a, 2
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ld [MBC1SRamBank], a
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call EmptySRAMBoxesInBank
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ld a, 3
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ld [MBC1SRamBank], a
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call EmptySRAMBoxesInBank
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xor a
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ld [MBC1SRamBankingMode], a
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ld [MBC1SRamEnable], a
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ret
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EmptySRAMBoxesInBank:
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; marks every box in the current SRAM bank as empty
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ld hl, sBox1 ; sBox7
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call EmptySRAMBox
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ld hl, sBox2 ; sBox8
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call EmptySRAMBox
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ld hl, sBox3 ; sBox9
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call EmptySRAMBox
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ld hl, sBox4 ; sBox10
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call EmptySRAMBox
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ld hl, sBox5 ; sBox11
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call EmptySRAMBox
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ld hl, sBox6 ; sBox12
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call EmptySRAMBox
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ld hl, sBox1 ; sBox7
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ld bc, sBank2AllBoxesChecksum - sBox1
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call SAVCheckSum
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ld [sBank2AllBoxesChecksum], a ; sBank3AllBoxesChecksum
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call CalcIndividualBoxCheckSums
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ret
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EmptySRAMBox:
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xor a
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ld [hli], a
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dec a
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ld [hl], a
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ret
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GetMonCountsForAllBoxes:
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ld hl, wBoxMonCounts
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push hl
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ld a, SRAM_ENABLE
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ld [MBC1SRamEnable], a
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ld a, $1
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ld [MBC1SRamBankingMode], a
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ld a, $2
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ld [MBC1SRamBank], a
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call GetMonCountsForBoxesInBank
|
|
ld a, $3
|
|
ld [MBC1SRamBank], a
|
|
call GetMonCountsForBoxesInBank
|
|
xor a
|
|
ld [MBC1SRamBankingMode], a
|
|
ld [MBC1SRamEnable], a
|
|
pop hl
|
|
|
|
; copy the count for the current box from WRAM
|
|
ld a, [wCurrentBoxNum]
|
|
and $7f
|
|
ld c, a
|
|
ld b, 0
|
|
add hl, bc
|
|
ld a, [wNumInBox]
|
|
ld [hl], a
|
|
|
|
ret
|
|
|
|
GetMonCountsForBoxesInBank:
|
|
ld a, [sBox1] ; sBox7
|
|
ld [hli], a
|
|
ld a, [sBox2] ; sBox8
|
|
ld [hli], a
|
|
ld a, [sBox3] ; sBox9
|
|
ld [hli], a
|
|
ld a, [sBox4] ; sBox10
|
|
ld [hli], a
|
|
ld a, [sBox5] ; sBox11
|
|
ld [hli], a
|
|
ld a, [sBox6] ; sBox12
|
|
ld [hli], a
|
|
ret
|
|
|
|
SAVCheckRandomID:
|
|
;checks if Sav file is the same by checking player's name 1st letter ($a598)
|
|
; and the two random numbers generated at game beginning
|
|
;(which are stored at wPlayerID)s
|
|
ld a, $0a
|
|
ld [MBC1SRamEnable], a
|
|
ld a, $01
|
|
ld [MBC1SRamBankingMode], a
|
|
ld [MBC1SRamBank], a
|
|
ld a, [sPlayerName]
|
|
and a
|
|
jr z, .next
|
|
ld hl, sPlayerName
|
|
ld bc, sMainDataCheckSum - sPlayerName
|
|
call SAVCheckSum
|
|
ld c, a
|
|
ld a, [sMainDataCheckSum]
|
|
cp c
|
|
jr nz, .next
|
|
ld hl, sMainData + (wPlayerID - wMainDataStart) ; player ID
|
|
ld a, [hli]
|
|
ld h, [hl]
|
|
ld l, a
|
|
ld a, [wPlayerID]
|
|
cp l
|
|
jr nz, .next
|
|
ld a, [wPlayerID + 1]
|
|
cp h
|
|
.next
|
|
ld a, $00
|
|
ld [MBC1SRamBankingMode], a
|
|
ld [MBC1SRamEnable], a
|
|
ret
|
|
|
|
SaveHallOfFameTeams:
|
|
ld a, [wNumHoFTeams]
|
|
dec a
|
|
cp HOF_TEAM_CAPACITY
|
|
jr nc, .shiftHOFTeams
|
|
ld hl, sHallOfFame
|
|
ld bc, HOF_TEAM
|
|
call AddNTimes
|
|
ld e, l
|
|
ld d, h
|
|
ld hl, wHallOfFame
|
|
ld bc, HOF_TEAM
|
|
jr HallOfFame_Copy
|
|
|
|
.shiftHOFTeams
|
|
; if the space designated for HOF teams is full, then shift all HOF teams to the next slot, making space for the new HOF team
|
|
; this deletes the last HOF team though
|
|
ld hl, sHallOfFame + HOF_TEAM
|
|
ld de, sHallOfFame
|
|
ld bc, HOF_TEAM * (HOF_TEAM_CAPACITY - 1)
|
|
call HallOfFame_Copy
|
|
ld hl, wHallOfFame
|
|
ld de, sHallOfFame + HOF_TEAM * (HOF_TEAM_CAPACITY - 1)
|
|
ld bc, HOF_TEAM
|
|
jr HallOfFame_Copy
|
|
|
|
LoadHallOfFameTeams:
|
|
ld hl, sHallOfFame
|
|
ld bc, HOF_TEAM
|
|
ld a, [wHoFTeamIndex]
|
|
call AddNTimes
|
|
ld de, wHallOfFame
|
|
ld bc, HOF_TEAM
|
|
; fallthrough
|
|
|
|
HallOfFame_Copy:
|
|
ld a, SRAM_ENABLE
|
|
ld [MBC1SRamEnable], a
|
|
ld a, $1
|
|
ld [MBC1SRamBankingMode], a
|
|
xor a
|
|
ld [MBC1SRamBank], a
|
|
call CopyData
|
|
xor a
|
|
ld [MBC1SRamBankingMode], a
|
|
ld [MBC1SRamEnable], a
|
|
ret
|
|
|
|
ClearSAV:
|
|
ld a, SRAM_ENABLE
|
|
ld [MBC1SRamEnable], a
|
|
ld a, $1
|
|
ld [MBC1SRamBankingMode], a
|
|
xor a
|
|
call PadSRAM_FF
|
|
ld a, $1
|
|
call PadSRAM_FF
|
|
ld a, $2
|
|
call PadSRAM_FF
|
|
ld a, $3
|
|
call PadSRAM_FF
|
|
xor a
|
|
ld [MBC1SRamBankingMode], a
|
|
ld [MBC1SRamEnable], a
|
|
ret
|
|
|
|
PadSRAM_FF:
|
|
ld [MBC1SRamBank], a
|
|
ld hl, $a000
|
|
ld bc, $2000
|
|
ld a, $ff
|
|
jp FillMemory
|