ref: 7c3a90bf0181127fab4cd98ad4a3173a2984f51e
dir: /engine/palettes.asm/
_RunPaletteCommand: call GetPredefRegisters ld a, b cp $ff jr nz, .next ld a, [wDefaultPaletteCommand] ; use default command if command ID is $ff .next cp UPDATE_PARTY_MENU_BLK_PACKET jp z, UpdatePartyMenuBlkPacket ld l, a ld h, 0 add hl, hl ld de, SetPalFunctions add hl, de ld a, [hli] ld h, [hl] ld l, a ld de, SendSGBPackets push de jp [hl] SetPal_BattleBlack: ld hl, PalPacket_Black ld de, BlkPacket_Battle ret ; uses PalPacket_Empty to build a packet based on mon IDs and health color SetPal_Battle: ld hl, PalPacket_Empty ld de, wPalPacket ld bc, $10 call CopyData ld a, [wPlayerBattleStatus3] ld hl, wBattleMonSpecies call DeterminePaletteID ld b, a ld a, [wEnemyBattleStatus3] ld hl, wEnemyMonSpecies2 call DeterminePaletteID ld c, a ld hl, wPalPacket + 1 ld a, [wPlayerHPBarColor] add PAL_GREENBAR ld [hli], a inc hl ld a, [wEnemyHPBarColor] add PAL_GREENBAR ld [hli], a inc hl ld a, b ld [hli], a inc hl ld a, c ld [hl], a ld hl, wPalPacket ld de, BlkPacket_Battle ld a, SET_PAL_BATTLE ld [wDefaultPaletteCommand], a ret SetPal_TownMap: ld hl, PalPacket_TownMap ld de, BlkPacket_WholeScreen ret ; uses PalPacket_Empty to build a packet based the mon ID SetPal_StatusScreen: ld hl, PalPacket_Empty ld de, wPalPacket ld bc, $10 call CopyData ld a, [wcf91] cp VICTREEBEL + 1 jr c, .pokemon ld a, $1 ; not pokemon .pokemon call DeterminePaletteIDOutOfBattle push af ld hl, wPalPacket + 1 ld a, [wStatusScreenHPBarColor] add PAL_GREENBAR ld [hli], a inc hl pop af ld [hl], a ld hl, wPalPacket ld de, BlkPacket_StatusScreen ret SetPal_PartyMenu: ld hl, PalPacket_PartyMenu ld de, wPartyMenuBlkPacket ret SetPal_Pokedex: ld hl, PalPacket_Pokedex ld de, wPalPacket ld bc, $10 call CopyData ld a, [wcf91] call DeterminePaletteIDOutOfBattle ld hl, wPalPacket + 3 ld [hl], a ld hl, wPalPacket ld de, BlkPacket_Pokedex ret SetPal_Slots: ld hl, PalPacket_Slots ld de, BlkPacket_Slots ret SetPal_TitleScreen: ld hl, PalPacket_Titlescreen ld de, BlkPacket_Titlescreen ret ; used mostly for menus and the Oak intro SetPal_Generic: ld hl, PalPacket_Generic ld de, BlkPacket_WholeScreen ret SetPal_NidorinoIntro: ld hl, PalPacket_NidorinoIntro ld de, BlkPacket_NidorinoIntro ret SetPal_GameFreakIntro: ld hl, PalPacket_GameFreakIntro ld de, BlkPacket_GameFreakIntro ld a, SET_PAL_GENERIC ld [wDefaultPaletteCommand], a ret ; uses PalPacket_Empty to build a packet based on the current map SetPal_Overworld: ld hl, PalPacket_Empty ld de, wPalPacket ld bc, $10 call CopyData ld a, [wCurMapTileset] cp CEMETERY jr z, .PokemonTowerOrAgatha cp CAVERN jr z, .caveOrBruno ld a, [wCurMap] cp REDS_HOUSE_1F jr c, .townOrRoute cp UNKNOWN_DUNGEON_2 jr c, .normalDungeonOrBuilding cp NAME_RATERS_HOUSE jr c, .caveOrBruno cp LORELEIS_ROOM jr z, .Lorelei cp BRUNOS_ROOM jr z, .caveOrBruno .normalDungeonOrBuilding ld a, [wLastMap] ; town or route that current dungeon or building is located .townOrRoute cp SAFFRON_CITY + 1 jr c, .town ld a, PAL_ROUTE - 1 .town inc a ; a town's palette ID is its map ID + 1 ld hl, wPalPacket + 1 ld [hld], a ld de, BlkPacket_WholeScreen ld a, SET_PAL_OVERWORLD ld [wDefaultPaletteCommand], a ret .PokemonTowerOrAgatha ld a, PAL_GREYMON - 1 jr .town .caveOrBruno ld a, PAL_CAVE - 1 jr .town .Lorelei xor a jr .town ; used when a Pokemon is the only thing on the screen ; such as evolution, trading and the Hall of Fame SetPal_PokemonWholeScreen: push bc ld hl, PalPacket_Empty ld de, wPalPacket ld bc, $10 call CopyData pop bc ld a, c and a ld a, PAL_BLACK jr nz, .next ld a, [wWholeScreenPaletteMonSpecies] call DeterminePaletteIDOutOfBattle .next ld [wPalPacket + 1], a ld hl, wPalPacket ld de, BlkPacket_WholeScreen ret SetPal_TrainerCard: ld hl, BlkPacket_TrainerCard ld de, wTrainerCardBlkPacket ld bc, $40 call CopyData ld de, BadgeBlkDataLengths ld hl, wTrainerCardBlkPacket + 2 ld a, [wObtainedBadges] ld c, 8 .badgeLoop srl a push af jr c, .haveBadge ; The player doens't have the badge, so zero the badge's blk data. push bc ld a, [de] ld c, a xor a .zeroBadgeDataLoop ld [hli], a dec c jr nz, .zeroBadgeDataLoop pop bc jr .nextBadge .haveBadge ; The player does have the badge, so skip past the badge's blk data. ld a, [de] .skipBadgeDataLoop inc hl dec a jr nz, .skipBadgeDataLoop .nextBadge pop af inc de dec c jr nz, .badgeLoop ld hl, PalPacket_TrainerCard ld de, wTrainerCardBlkPacket ret SetPalFunctions: dw SetPal_BattleBlack dw SetPal_Battle dw SetPal_TownMap dw SetPal_StatusScreen dw SetPal_Pokedex dw SetPal_Slots dw SetPal_TitleScreen dw SetPal_NidorinoIntro dw SetPal_Generic dw SetPal_Overworld dw SetPal_PartyMenu dw SetPal_PokemonWholeScreen dw SetPal_GameFreakIntro dw SetPal_TrainerCard ; The length of the blk data of each badge on the Trainer Card. ; The Rainbow Badge has 3 entries because of its many colors. BadgeBlkDataLengths: db 6 ; Boulder Badge db 6 ; Cascade Badge db 6 ; Thunder Badge db 6 * 3 ; Rainbow Badge db 6 ; Soul Badge db 6 ; Marsh Badge db 6 ; Volcano Badge db 6 ; Earth Badge DeterminePaletteID: bit Transformed, a ; a is battle status 3 ld a, PAL_GREYMON ; if the mon has used Transform, use Ditto's palette ret nz ld a, [hl] DeterminePaletteIDOutOfBattle: ld [wd11e], a and a ; is the mon index 0? jr z, .skipDexNumConversion push bc predef IndexToPokedex pop bc ld a, [wd11e] .skipDexNumConversion ld e, a ld d, 0 ld hl, MonsterPalettes ; not just for Pokemon, Trainers use it too add hl, de ld a, [hl] ret InitPartyMenuBlkPacket: ld hl, BlkPacket_PartyMenu ld de, wPartyMenuBlkPacket ld bc, $30 jp CopyData UpdatePartyMenuBlkPacket: ; Update the blk packet with the palette of the HP bar that is ; specified in [wWhichPartyMenuHPBar]. ld hl, wPartyMenuHPBarColors ld a, [wWhichPartyMenuHPBar] ld e, a ld d, 0 add hl, de ld e, l ld d, h ld a, [de] and a ld e, (1 << 2) | 1 ; green jr z, .next dec a ld e, (2 << 2) | 2 ; yellow jr z, .next ld e, (3 << 2) | 3 ; red .next push de ld hl, wPartyMenuBlkPacket + 8 + 1 ld bc, 6 ld a, [wWhichPartyMenuHPBar] call AddNTimes pop de ld [hl], e ret SendSGBPacket: ;check number of packets ld a,[hl] and a,$07 ret z ; store number of packets in B ld b,a .loop2 ; save B for later use push bc ; disable ReadJoypad to prevent it from interfering with sending the packet ld a, 1 ld [hDisableJoypadPolling], a ; send RESET signal (P14=LOW, P15=LOW) xor a ld [rJOYP],a ; set P14=HIGH, P15=HIGH ld a,$30 ld [rJOYP],a ;load length of packets (16 bytes) ld b,$10 .nextByte ;set bit counter (8 bits per byte) ld e,$08 ; get next byte in the packet ld a,[hli] ld d,a .nextBit0 bit 0,d ; if 0th bit is not zero set P14=HIGH,P15=LOW (send bit 1) ld a,$10 jr nz,.next0 ; else (if 0th bit is zero) set P14=LOW,P15=HIGH (send bit 0) ld a,$20 .next0 ld [rJOYP],a ; must set P14=HIGH,P15=HIGH between each "pulse" ld a,$30 ld [rJOYP],a ; rotation will put next bit in 0th position (so we can always use command ; "bit 0,d" to fetch the bit that has to be sent) rr d ; decrease bit counter so we know when we have sent all 8 bits of current byte dec e jr nz,.nextBit0 dec b jr nz,.nextByte ; send bit 1 as a "stop bit" (end of parameter data) ld a,$20 ld [rJOYP],a ; set P14=HIGH,P15=HIGH ld a,$30 ld [rJOYP],a xor a ld [hDisableJoypadPolling],a ; wait for about 70000 cycles call Wait7000 ; restore (previously pushed) number of packets pop bc dec b ; return if there are no more packets ret z ; else send 16 more bytes jr .loop2 LoadSGB: xor a ld [wOnSGB], a call CheckSGB ret nc ld a, 1 ld [wOnSGB], a ld a, [wGBC] and a jr z, .notGBC ret .notGBC di call PrepareSuperNintendoVRAMTransfer ei ld a, 1 ld [wCopyingSGBTileData], a ld de, ChrTrnPacket ld hl, SGBBorderGraphics call CopyGfxToSuperNintendoVRAM xor a ld [wCopyingSGBTileData], a ld de, PctTrnPacket ld hl, BorderPalettes call CopyGfxToSuperNintendoVRAM xor a ld [wCopyingSGBTileData], a ld de, PalTrnPacket ld hl, SuperPalettes call CopyGfxToSuperNintendoVRAM call ClearVram ld hl, MaskEnCancelPacket jp SendSGBPacket PrepareSuperNintendoVRAMTransfer: ld hl, .packetPointers ld c, 9 .loop push bc ld a, [hli] push hl ld h, [hl] ld l, a call SendSGBPacket pop hl inc hl pop bc dec c jr nz, .loop ret .packetPointers ; Only the first packet is needed. dw MaskEnFreezePacket dw DataSnd_72548 dw DataSnd_72558 dw DataSnd_72568 dw DataSnd_72578 dw DataSnd_72588 dw DataSnd_72598 dw DataSnd_725a8 dw DataSnd_725b8 CheckSGB: ; Returns whether the game is running on an SGB in carry. ld hl, MltReq2Packet di call SendSGBPacket ld a, 1 ld [hDisableJoypadPolling], a ei call Wait7000 ld a, [rJOYP] and $3 cp $3 jr nz, .isSGB ld a, $20 ld [rJOYP], a ld a, [rJOYP] ld a, [rJOYP] call Wait7000 call Wait7000 ld a, $30 ld [rJOYP], a call Wait7000 call Wait7000 ld a, $10 ld [rJOYP], a ld a, [rJOYP] ld a, [rJOYP] ld a, [rJOYP] ld a, [rJOYP] ld a, [rJOYP] ld a, [rJOYP] call Wait7000 call Wait7000 ld a, $30 ld [rJOYP], a ld a, [rJOYP] ld a, [rJOYP] ld a, [rJOYP] call Wait7000 call Wait7000 ld a, [rJOYP] and $3 cp $3 jr nz, .isSGB call SendMltReq1Packet and a ret .isSGB call SendMltReq1Packet scf ret SendMltReq1Packet: ld hl, MltReq1Packet call SendSGBPacket jp Wait7000 CopyGfxToSuperNintendoVRAM: di push de call DisableLCD ld a, $e4 ld [rBGP], a ld de, vChars1 ld a, [wCopyingSGBTileData] and a jr z, .notCopyingTileData call CopySGBBorderTiles jr .next .notCopyingTileData ld bc, $1000 call CopyData .next ld hl, vBGMap0 ld de, $c ld a, $80 ld c, $d .loop ld b, $14 .innerLoop ld [hli], a inc a dec b jr nz, .innerLoop add hl, de dec c jr nz, .loop ld a, $e3 ld [rLCDC], a pop hl call SendSGBPacket xor a ld [rBGP], a ei ret Wait7000: ; Each loop takes 9 cycles so this routine actually waits 63000 cycles. ld de, 7000 .loop nop nop nop dec de ld a, d or e jr nz, .loop ret SendSGBPackets: ld a, [wGBC] and a jr z, .notGBC push de call InitGBCPalettes pop hl call EmptyFunc5 ret .notGBC push de call SendSGBPacket pop hl jp SendSGBPacket InitGBCPalettes: ld a, $80 ; index 0 with auto-increment ld [rBGPI], a inc hl ld c, $20 .loop ld a, [hli] inc hl add a add a add a ld de, SuperPalettes add e jr nc, .noCarry inc d .noCarry ld a, [de] ld [rBGPD], a dec c jr nz, .loop ret EmptyFunc5: ret CopySGBBorderTiles: ; SGB tile data is stored in a 4BPP planar format. ; Each tile is 32 bytes. The first 16 bytes contain bit planes 1 and 2, while ; the second 16 bytes contain bit planes 3 and 4. ; This function converts 2BPP planar data into this format by mapping ; 2BPP colors 0-3 to 4BPP colors 0-3. 4BPP colors 4-15 are not used. ld b, 128 .tileLoop ; Copy bit planes 1 and 2 of the tile data. ld c, 16 .copyLoop ld a, [hli] ld [de], a inc de dec c jr nz, .copyLoop ; Zero bit planes 3 and 4. ld c, 16 xor a .zeroLoop ld [de], a inc de dec c jr nz, .zeroLoop dec b jr nz, .tileLoop ret INCLUDE "data/sgb_packets.asm" INCLUDE "data/mon_palettes.asm" INCLUDE "data/super_palettes.asm" INCLUDE "data/sgb_border.asm"