ref: b25e5626a166a7c02e96ac8cd901ada9487f8a90
dir: /engine/battle/battle_transition.asm/
DoBattleTransition: ; 8c20f call .InitGFX ld a, [rBGP] ld [wBGP], a ld a, [rOBP0] ld [wOBP0], a ld a, [rOBP1] ld [wOBP1], a call DelayFrame ld hl, hVBlank ld a, [hl] push af ld [hl], $1 .loop ld a, [wJumptableIndex] bit 7, a jr nz, .done call BattleTransitionJumptable call DelayFrame jr .loop .done ld a, [rSVBK] push af ld a, BANK(wBGPals1) ld [rSVBK], a ld hl, wBGPals1 ld bc, 8 palettes xor a call ByteFill pop af ld [rSVBK], a ld a, %11111111 ld [wBGP], a call DmgToCgbBGPals call DelayFrame xor a ld [hLCDCPointer], a ld [hLYOverrideStart], a ld [hLYOverrideEnd], a ld [hSCY], a ld a, 1 ; unnecessary bankswitch? ld [rSVBK], a pop af ld [hVBlank], a call DelayFrame ret ; 8c26d .InitGFX: ; 8c26d ld a, [wLinkMode] cp LINK_MOBILE jr z, .mobile farcall ReanchorBGMap_NoOAMUpdate call UpdateSprites call DelayFrame call .NonMobile_LoadPokeballTiles call BattleStart_CopyTilemapAtOnce jr .resume .mobile call LoadTrainerBattlePokeballTiles .resume ld a, SCREEN_HEIGHT_PX ld [hWY], a call DelayFrame xor a ld [hBGMapMode], a ld hl, wJumptableIndex xor a ld [hli], a ld [hli], a ld [hl], a call WipeLYOverrides ret ; 8c2a0 .NonMobile_LoadPokeballTiles: ; 8c2a0 call LoadTrainerBattlePokeballTiles hlbgcoord 0, 0 call ConvertTrainerBattlePokeballTilesTo2bpp ret ; 8c2aa LoadTrainerBattlePokeballTiles: ; Load the tiles used in the Pokeball Graphic that fills the screen ; at the start of every Trainer battle. ld de, TrainerBattlePokeballTiles ld hl, vTiles1 tile $7e ld b, BANK(TrainerBattlePokeballTiles) ld c, 2 call Request2bpp ld a, [rVBK] push af ld a, $1 ld [rVBK], a ld de, TrainerBattlePokeballTiles ld hl, vTiles4 tile $7e ld b, BANK(TrainerBattlePokeballTiles) ld c, 2 call Request2bpp pop af ld [rVBK], a ret ; 8c2cf ConvertTrainerBattlePokeballTilesTo2bpp: ; 8c2cf ld a, [rSVBK] push af ld a, BANK(wDecompressScratch) ld [rSVBK], a push hl ld hl, wDecompressScratch ld bc, $28 tiles .loop ld [hl], -1 inc hl dec bc ld a, c or b jr nz, .loop pop hl ld de, wDecompressScratch ld b, BANK(ConvertTrainerBattlePokeballTilesTo2bpp) ; BANK(@) ld c, $28 call Request2bpp pop af ld [rSVBK], a ret ; 8c2f4 TrainerBattlePokeballTiles: ; 8c2f4 INCBIN "gfx/overworld/trainer_battle_pokeball_tiles.2bpp" BattleTransitionJumptable: ; 8c314 jumptable .dw, wJumptableIndex ; 8c323 .dw ; 8c323 (23:4323) dw StartTrainerBattle_DetermineWhichAnimation ; 00 ; Animation 1: cave dw StartTrainerBattle_LoadPokeBallGraphics ; 01 dw StartTrainerBattle_SetUpBGMap ; 02 dw StartTrainerBattle_Flash ; 03 dw StartTrainerBattle_Flash ; 04 dw StartTrainerBattle_Flash ; 05 dw StartTrainerBattle_NextScene ; 06 dw StartTrainerBattle_SetUpForWavyOutro ; 07 dw StartTrainerBattle_SineWave ; 08 ; Animation 2: cave, stronger dw StartTrainerBattle_LoadPokeBallGraphics ; 09 dw StartTrainerBattle_SetUpBGMap ; 0a dw StartTrainerBattle_Flash ; 0b dw StartTrainerBattle_Flash ; 0c dw StartTrainerBattle_Flash ; 0d dw StartTrainerBattle_NextScene ; 0e ; There is no setup for this one dw StartTrainerBattle_ZoomToBlack ; 0f ; Animation 3: no cave dw StartTrainerBattle_LoadPokeBallGraphics ; 10 dw StartTrainerBattle_SetUpBGMap ; 11 dw StartTrainerBattle_Flash ; 12 dw StartTrainerBattle_Flash ; 13 dw StartTrainerBattle_Flash ; 14 dw StartTrainerBattle_NextScene ; 15 dw StartTrainerBattle_SetUpForSpinOutro ; 16 dw StartTrainerBattle_SpinToBlack ; 17 ; Animation 4: no cave, stronger dw StartTrainerBattle_LoadPokeBallGraphics ; 18 dw StartTrainerBattle_SetUpBGMap ; 19 dw StartTrainerBattle_Flash ; 1a dw StartTrainerBattle_Flash ; 1b dw StartTrainerBattle_Flash ; 1c dw StartTrainerBattle_NextScene ; 1d dw StartTrainerBattle_SetUpForRandomScatterOutro ; 1e dw StartTrainerBattle_SpeckleToBlack ; 1f ; All animations jump to here. dw StartTrainerBattle_Finish ; 20 StartTrainerBattle_DetermineWhichAnimation: ; 8c365 (23:4365) ; The screen flashes a different number of times depending on the level of ; your lead Pokemon relative to the opponent's. ; BUG: BattleMonLevel and EnemyMonLevel are not set at this point, so whatever ; values happen to be there will determine the animation. ld de, 0 ld a, [BattleMonLevel] add 3 ld hl, EnemyMonLevel cp [hl] jr nc, .okay set 0, e .okay ld a, [wEnvironment] cp CAVE jr z, .okay2 cp ENVIRONMENT_5 jr z, .okay2 cp DUNGEON jr z, .okay2 set 1, e .okay2 ld hl, .StartingPoints add hl, de ld a, [hl] ld [wJumptableIndex], a ret ; 8c38f (23:438f) .StartingPoints: ; 8c38f db 1, 9 db 16, 24 ; 8c393 StartTrainerBattle_Finish: ; 8c393 (23:4393) call ClearSprites ld a, $80 ld [wJumptableIndex], a ret StartTrainerBattle_NextScene: ; 8c39c (23:439c) ld hl, wJumptableIndex inc [hl] ret StartTrainerBattle_SetUpBGMap: ; 8c3a1 (23:43a1) call StartTrainerBattle_NextScene xor a ld [wcf64], a ld [hBGMapMode], a ret StartTrainerBattle_Flash: ; 8c3ab (23:43ab) call .DoFlashAnimation ret nc call StartTrainerBattle_NextScene ret .DoFlashAnimation: ; 8c3b3 (23:43b3) ld a, [wTimeOfDayPalset] cp %11111111 ; dark cave jr z, .done ld hl, wcf64 ld a, [hl] inc [hl] srl a ld e, a ld d, 0 ld hl, .pals add hl, de ld a, [hl] cp %00000001 jr z, .done ld [wBGP], a call DmgToCgbBGPals and a ret .done xor a ld [wcf64], a scf ret ; 8c3db (23:43db) .pals ; 8c3db db %11111001 ; 3321 db %11111110 ; 3332 db %11111111 ; 3333 db %11111110 ; 3332 db %11111001 ; 3321 db %11100100 ; 3210 db %10010000 ; 2100 db %01000000 ; 1000 db %00000000 ; 0000 db %01000000 ; 1000 db %10010000 ; 2100 db %11100100 ; 3210 db %00000001 ; 0001 ; 8c3e8 StartTrainerBattle_SetUpForWavyOutro: ; 8c3e8 (23:43e8) farcall Function5602 ld a, BANK(LYOverrides) ld [rSVBK], a call StartTrainerBattle_NextScene ld a, rSCX - $ff00 ld [hLCDCPointer], a xor a ld [hLYOverrideStart], a ld a, $90 ld [hLYOverrideEnd], a xor a ld [wcf64], a ld [wcf65], a ret StartTrainerBattle_SineWave: ; 8c408 (23:4408) ld a, [wcf64] cp $60 jr nc, .end call .DoSineWave ret .end ld a, $20 ld [wJumptableIndex], a ret .DoSineWave: ; 8c419 (23:4419) ld hl, wcf65 ld a, [hl] inc [hl] ld hl, wcf64 ld d, [hl] add [hl] ld [hl], a ld a, LYOverridesEnd - LYOverrides ld bc, LYOverrides ld e, $0 .loop push af push de ld a, e call StartTrainerBattle_DrawSineWave ld [bc], a inc bc pop de ld a, e add $2 ld e, a pop af dec a jr nz, .loop ret StartTrainerBattle_SetUpForSpinOutro: ; 8c43d (23:443d) farcall Function5602 ld a, BANK(LYOverrides) ld [rSVBK], a call StartTrainerBattle_NextScene xor a ld [wcf64], a ret StartTrainerBattle_SpinToBlack: ; 8c44f (23:444f) xor a ld [hBGMapMode], a ld a, [wcf64] ld e, a ld d, 0 ld hl, .spintable rept 5 add hl, de endr ld a, [hli] cp -1 jr z, .end ld [wcf65], a call .load ld a, $1 ld [hBGMapMode], a call DelayFrame call DelayFrame ld hl, wcf64 inc [hl] ret .end ld a, $1 ld [hBGMapMode], a call DelayFrame call DelayFrame call DelayFrame xor a ld [hBGMapMode], a ld a, $20 ld [wJumptableIndex], a ret ; 8c490 (23:4490) ; quadrants const_def const UPPER_LEFT const UPPER_RIGHT const LOWER_LEFT const LOWER_RIGHT .spintable ; 8c490 spintable_entry: MACRO db \1 dw .wedge\2 dwcoord \3, \4 ENDM spintable_entry UPPER_LEFT, 1, 1, 6 spintable_entry UPPER_LEFT, 2, 0, 3 spintable_entry UPPER_LEFT, 3, 1, 0 spintable_entry UPPER_LEFT, 4, 5, 0 spintable_entry UPPER_LEFT, 5, 9, 0 spintable_entry UPPER_RIGHT, 5, 10, 0 spintable_entry UPPER_RIGHT, 4, 14, 0 spintable_entry UPPER_RIGHT, 3, 18, 0 spintable_entry UPPER_RIGHT, 2, 19, 3 spintable_entry UPPER_RIGHT, 1, 18, 6 spintable_entry LOWER_RIGHT, 1, 18, 11 spintable_entry LOWER_RIGHT, 2, 19, 14 spintable_entry LOWER_RIGHT, 3, 18, 17 spintable_entry LOWER_RIGHT, 4, 14, 17 spintable_entry LOWER_RIGHT, 5, 10, 17 spintable_entry LOWER_LEFT, 5, 9, 17 spintable_entry LOWER_LEFT, 4, 5, 17 spintable_entry LOWER_LEFT, 3, 1, 17 spintable_entry LOWER_LEFT, 2, 0, 14 spintable_entry LOWER_LEFT, 1, 1, 11 db -1 ; 8c4f5 .load ; 8c4f5 (23:44f5) ld a, [hli] ld e, a ld a, [hli] ld d, a ld a, [hli] ld h, [hl] ld l, a .loop push hl ld a, [de] ld c, a inc de .loop1 ld [hl], $ff ld a, [wcf65] bit 0, a jr z, .leftside inc hl jr .okay1 .leftside dec hl .okay1 dec c jr nz, .loop1 pop hl ld a, [wcf65] bit 1, a ld bc, SCREEN_WIDTH jr z, .upper ld bc, -SCREEN_WIDTH .upper add hl, bc ld a, [de] inc de cp -1 ret z and a jr z, .loop ld c, a .loop2 ld a, [wcf65] bit 0, a jr z, .leftside2 dec hl jr .okay2 .leftside2 inc hl .okay2 dec c jr nz, .loop2 jr .loop ; 8c538 (23:4538) .wedge1 db 2, 3, 5, 4, 9, -1 .wedge2 db 1, 1, 2, 2, 4, 2, 4, 2, 3, -1 .wedge3 db 2, 1, 3, 1, 4, 1, 4, 1, 4, 1, 3, 1, 2, 1, 1, 1, 1, -1 .wedge4 db 4, 1, 4, 0, 3, 1, 3, 0, 2, 1, 2, 0, 1, -1 .wedge5 db 4, 0, 3, 0, 3, 0, 2, 0, 2, 0, 1, 0, 1, 0, 1, -1 ; 8c578 StartTrainerBattle_SetUpForRandomScatterOutro: ; 8c578 (23:4578) farcall Function5602 ld a, BANK(LYOverrides) ld [rSVBK], a call StartTrainerBattle_NextScene ld a, $10 ld [wcf64], a ld a, $1 ld [hBGMapMode], a ret StartTrainerBattle_SpeckleToBlack: ; 8c58f (23:458f) ld hl, wcf64 ld a, [hl] and a jr z, .done dec [hl] ld c, $c .loop push bc call .BlackOutRandomTile pop bc dec c jr nz, .loop ret .done ld a, $1 ld [hBGMapMode], a call DelayFrame call DelayFrame call DelayFrame xor a ld [hBGMapMode], a ld a, $20 ld [wJumptableIndex], a ret .BlackOutRandomTile: ; 8c5b8 (23:45b8) .y_loop call Random cp SCREEN_HEIGHT jr nc, .y_loop ld b, a .x_loop call Random cp SCREEN_WIDTH jr nc, .x_loop ld c, a hlcoord 0, -1 ld de, SCREEN_WIDTH inc b .row_loop add hl, de dec b jr nz, .row_loop add hl, bc ; If the tile has already been blacked out, ; sample a new tile ld a, [hl] cp $ff jr z, .y_loop ld [hl], $ff ret StartTrainerBattle_LoadPokeBallGraphics: ; 8c5dc (23:45dc) ld a, [OtherTrainerClass] and a jp z, .nextscene ; don't need to be here if wild xor a ld [hBGMapMode], a hlcoord 0, 0, AttrMap ld bc, SCREEN_HEIGHT * SCREEN_WIDTH inc b inc c jr .enter_loop_midway .loop ; set all pals to 7 ld a, [hl] or %00000111 ld [hli], a .enter_loop_midway dec c jr nz, .loop dec b jr nz, .loop call .loadpokeballgfx hlcoord 2, 1 ld b, SCREEN_WIDTH - 4 .loop2 push hl ld c, 2 .loop3 push hl ld a, [de] inc de .loop4 ; Loading is done bit by bit and a jr z, .done sla a jr nc, .no_load ld [hl], $fe .no_load inc hl jr .loop4 .done pop hl push bc ld bc, (SCREEN_WIDTH - 4) / 2 add hl, bc pop bc dec c jr nz, .loop3 pop hl push bc ld bc, SCREEN_WIDTH add hl, bc pop bc dec b jr nz, .loop2 ld a, [hCGB] and a jr nz, .cgb ld a, $1 ld [hBGMapMode], a call DelayFrame call DelayFrame jr .nextscene .cgb ld hl, .daypals ld a, [TimeOfDayPal] maskbits NUM_DAYTIMES cp DARKNESS_F jr nz, .daytime ld hl, .nightpals .daytime ld a, [rSVBK] push af ld a, BANK(wBGPals1) ld [rSVBK], a call .copypals push hl ld de, wBGPals1 palette PAL_BG_TEXT ld bc, 1 palettes call CopyBytes pop hl ld de, wBGPals2 palette PAL_BG_TEXT ld bc, 1 palettes call CopyBytes pop af ld [rSVBK], a ld a, $1 ld [hCGBPalUpdate], a call DelayFrame call BattleStart_CopyTilemapAtOnce .nextscene ; 8c673 (23:4673) call StartTrainerBattle_NextScene ret .copypals ; 8c677 (23:4677) ld de, wBGPals1 palette PAL_BG_TEXT call .copy ld de, wBGPals2 palette PAL_BG_TEXT call .copy ld de, wOBPals1 palette PAL_OW_TREE call .copy ld de, wOBPals2 palette PAL_OW_TREE call .copy ld de, wOBPals1 palette PAL_OW_ROCK call .copy ld de, wOBPals2 palette PAL_OW_ROCK .copy ; 8c698 (23:4698) push hl ld bc, 1 palettes call CopyBytes pop hl ret ; 8c6a1 (23:46a1) .daypals ; 8c6a1 INCLUDE "gfx/overworld/trainer_battle_day.pal" ; 8c6a9 .nightpals ; 8c6a9 INCLUDE "gfx/overworld/trainer_battle_nite.pal" ; 8c6b1 .loadpokeballgfx ld a, [OtherTrainerClass] ld de, PokeBallTransition ret PokeBallTransition: db %00000011, %11000000 db %00001111, %11110000 db %00111100, %00111100 db %00110000, %00001100 db %01100000, %00000110 db %01100011, %11000110 db %11000110, %01100011 db %11111100, %00111111 db %11111100, %00111111 db %11000110, %01100011 db %01100011, %11000110 db %01100000, %00000110 db %00110000, %00001100 db %00111100, %00111100 db %00001111, %11110000 db %00000011, %11000000 WipeLYOverrides: ; 8c6d8 ld a, [rSVBK] push af ld a, BANK(LYOverrides) ld [rSVBK], a ld hl, LYOverrides call .wipe ld hl, LYOverridesBackup call .wipe pop af ld [rSVBK], a ret ; 8c6ef .wipe ; 8c6ef xor a ld c, SCREEN_HEIGHT_PX .loop ld [hli], a dec c jr nz, .loop ret ; 8c6f7 StartTrainerBattle_DrawSineWave: ; 8c6f7 (23:46f7) ; a = d * sin(a * pi/32) and %111111 cp %100000 jr nc, .negative call .ApplySineWave ld a, h ret .negative and %011111 call .ApplySineWave ld a, h xor $ff inc a ret .ApplySineWave: ; 8c70c (23:470c) ld e, a ld a, d ld d, 0 ld hl, .sinewave add hl, de add hl, de ld e, [hl] inc hl ld d, [hl] ld hl, 0 .multiply srl a jr nc, .even add hl, de .even sla e rl d and a jr nz, .multiply ret ; 8c728 (23:4728) .sinewave ; 8c728 sine_wave $100 ; 8c768 StartTrainerBattle_ZoomToBlack: ; 8c768 (23:4768) farcall Function5602 ld de, .boxes .loop ld a, [de] cp -1 jr z, .done inc de ld c, a ld a, [de] inc de ld b, a ld a, [de] inc de ld l, a ld a, [de] inc de ld h, a xor a ld [hBGMapMode], a call .Copy call WaitBGMap jr .loop .done ld a, $20 ld [wJumptableIndex], a ret ; 8c792 (23:4792) .boxes ; 8c792 zoombox: MACRO ; width, height, start y, start x db \1, \2 dwcoord \3, \4 ENDM zoombox 4, 2, 8, 8 zoombox 6, 4, 7, 7 zoombox 8, 6, 6, 6 zoombox 10, 8, 5, 5 zoombox 12, 10, 4, 4 zoombox 14, 12, 3, 3 zoombox 16, 14, 2, 2 zoombox 18, 16, 1, 1 zoombox 20, 18, 0, 0 db -1 ; 8c7b7 .Copy: ; 8c7b7 (23:47b7) ld a, $ff .row push bc push hl .col ld [hli], a dec c jr nz, .col pop hl ld bc, SCREEN_WIDTH add hl, bc pop bc dec b jr nz, .row ret ; 8c7c9 (23:47c9) Unreferenced_Function8c7c9: ld a, $1 ld [hBGMapMode], a call WaitBGMap xor a ld [hBGMapMode], a ret