mirror of https://github.com/pret/pokecrystal.git
491 lines
7.2 KiB
NASM
491 lines
7.2 KiB
NASM
GetUnownLetter:
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; Return Unown letter in wUnownLetter based on DVs at hl
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; Take the middle 2 bits of each DV and place them in order:
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; atk def spd spc
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; .ww..xx. .yy..zz.
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; atk
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ld a, [hl]
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and %01100000
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sla a
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ld b, a
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; def
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ld a, [hli]
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and %00000110
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swap a
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srl a
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or b
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ld b, a
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; spd
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ld a, [hl]
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and %01100000
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swap a
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sla a
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or b
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ld b, a
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; spc
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ld a, [hl]
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and %00000110
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srl a
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or b
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; Divide by 10 to get 0-25
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ld [hDividend + 3], a
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xor a
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ld [hDividend], a
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ld [hDividend + 1], a
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ld [hDividend + 2], a
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ld a, $ff / NUM_UNOWN + 1
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ld [hDivisor], a
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ld b, 4
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call Divide
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; Increment to get 1-26
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ld a, [hQuotient + 2]
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inc a
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ld [wUnownLetter], a
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ret
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GetMonFrontpic:
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ld a, [wCurPartySpecies]
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ld [wCurSpecies], a
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call IsAPokemon
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ret c
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ld a, [rSVBK]
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push af
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call _GetFrontpic
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pop af
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ld [rSVBK], a
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ret
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GetAnimatedFrontpic:
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ld a, [wCurPartySpecies]
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ld [wCurSpecies], a
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call IsAPokemon
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ret c
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ld a, [rSVBK]
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push af
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xor a
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ld [hBGMapMode], a
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call _GetFrontpic
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call GetAnimatedEnemyFrontpic
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pop af
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ld [rSVBK], a
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ret
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_GetFrontpic:
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push de
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call GetBaseData
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ld a, [wBasePicSize]
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and $f
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ld b, a
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push bc
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call GetFrontpicPointer
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ld a, BANK(wDecompressEnemyFrontpic)
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ld [rSVBK], a
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ld a, b
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ld de, wDecompressEnemyFrontpic
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call FarDecompress
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pop bc
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ld hl, wDecompressScratch
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ld de, wDecompressEnemyFrontpic
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call PadFrontpic
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pop hl
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push hl
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ld de, wDecompressScratch
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ld c, 7 * 7
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ld a, [hROMBank]
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ld b, a
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call Get2bpp
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pop hl
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ret
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GetFrontpicPointer:
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ld a, [wCurPartySpecies]
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cp UNOWN
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jr z, .unown
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ld a, [wCurPartySpecies]
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ld d, BANK(PokemonPicPointers)
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jr .ok
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.unown
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ld a, [wUnownLetter]
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ld d, BANK(UnownPicPointers)
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.ok
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ld hl, PokemonPicPointers ; UnownPicPointers
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dec a
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ld bc, 6
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call AddNTimes
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ld a, d
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call GetFarByte
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call FixPicBank
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push af
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inc hl
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ld a, d
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call GetFarHalfword
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pop bc
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ret
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GetAnimatedEnemyFrontpic:
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ld a, BANK(vTiles3)
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ld [rVBK], a
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push hl
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ld de, wDecompressScratch
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ld c, 7 * 7
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ld a, [hROMBank]
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ld b, a
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call Get2bpp
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pop hl
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ld de, 7 * 7 tiles
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add hl, de
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push hl
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ld a, BANK(wBasePicSize)
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ld hl, wBasePicSize
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call GetFarWRAMByte
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pop hl
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and $f
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ld de, wDecompressEnemyFrontpic + 5 * 5 tiles
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ld c, 5 * 5
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cp 5
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jr z, .got_dims
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ld de, wDecompressEnemyFrontpic + 6 * 6 tiles
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ld c, 6 * 6
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cp 6
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jr z, .got_dims
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ld de, wDecompressEnemyFrontpic + 7 * 7 tiles
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ld c, 7 * 7
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.got_dims
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push hl
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push bc
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call LoadFrontpicTiles
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pop bc
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pop hl
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ld de, wDecompressScratch
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ld a, [hROMBank]
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ld b, a
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call Get2bpp
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xor a
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ld [rVBK], a
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ret
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LoadFrontpicTiles:
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ld hl, wDecompressScratch
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swap c
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ld a, c
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and $f
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ld b, a
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ld a, c
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and $f0
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ld c, a
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push bc
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call LoadOrientedFrontpic
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pop bc
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.loop
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push bc
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ld c, 0
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call LoadOrientedFrontpic
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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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GetMonBackpic:
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ld a, [wCurPartySpecies]
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call IsAPokemon
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ret c
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ld a, [wCurPartySpecies]
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ld b, a
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ld a, [wUnownLetter]
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ld c, a
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ld a, [rSVBK]
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push af
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ld a, BANK(wDecompressScratch)
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ld [rSVBK], a
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push de
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; These are assumed to be at the same address in their respective banks.
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ld hl, PokemonPicPointers ; UnownPicPointers
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ld a, b
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ld d, BANK(PokemonPicPointers)
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cp UNOWN
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jr nz, .ok
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ld a, c
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ld d, BANK(UnownPicPointers)
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.ok
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dec a
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ld bc, 6
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call AddNTimes
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ld bc, 3
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add hl, bc
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ld a, d
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call GetFarByte
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call FixPicBank
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push af
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inc hl
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ld a, d
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call GetFarHalfword
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ld de, wDecompressScratch
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pop af
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call FarDecompress
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ld hl, wDecompressScratch
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ld c, 6 * 6
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call FixBackpicAlignment
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pop hl
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ld de, wDecompressScratch
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ld a, [hROMBank]
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ld b, a
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call Get2bpp
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pop af
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ld [rSVBK], a
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ret
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FixPicBank:
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; This is a thing for some reason.
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PICS_FIX EQU $36
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GLOBAL PICS_FIX
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push hl
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push bc
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sub BANK("Pics 1") - PICS_FIX
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ld c, a
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ld b, 0
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ld hl, .PicsBanks
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add hl, bc
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ld a, [hl]
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pop bc
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pop hl
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ret
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.PicsBanks:
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db BANK("Pics 1") ; BANK("Pics 1") + 0
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db BANK("Pics 2") ; BANK("Pics 1") + 1
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db BANK("Pics 3") ; BANK("Pics 1") + 2
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db BANK("Pics 4") ; BANK("Pics 1") + 3
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db BANK("Pics 5") ; BANK("Pics 1") + 4
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db BANK("Pics 6") ; BANK("Pics 1") + 5
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db BANK("Pics 7") ; BANK("Pics 1") + 6
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db BANK("Pics 8") ; BANK("Pics 1") + 7
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db BANK("Pics 9") ; BANK("Pics 1") + 8
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db BANK("Pics 10") ; BANK("Pics 1") + 9
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db BANK("Pics 11") ; BANK("Pics 1") + 10
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db BANK("Pics 12") ; BANK("Pics 1") + 11
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db BANK("Pics 13") ; BANK("Pics 1") + 12
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db BANK("Pics 14") ; BANK("Pics 1") + 13
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db BANK("Pics 15") ; BANK("Pics 1") + 14
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db BANK("Pics 16") ; BANK("Pics 1") + 15
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db BANK("Pics 17") ; BANK("Pics 1") + 16
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db BANK("Pics 18") ; BANK("Pics 1") + 17
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db BANK("Pics 19") ; BANK("Pics 1") + 18
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db BANK("Pics 20") ; BANK("Pics 1") + 19
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db BANK("Pics 21") ; BANK("Pics 1") + 20
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db BANK("Pics 22") ; BANK("Pics 1") + 21
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db BANK("Pics 23") ; BANK("Pics 1") + 22
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db BANK("Pics 24") ; BANK("Pics 1") + 23
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Function511ec:
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ld a, c
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push de
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ld hl, PokemonPicPointers
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dec a
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ld bc, 6
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call AddNTimes
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ld a, BANK(PokemonPicPointers)
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call GetFarByte
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call FixPicBank
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push af
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inc hl
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ld a, BANK(PokemonPicPointers)
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call GetFarHalfword
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pop af
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pop de
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call FarDecompress
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ret
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GetTrainerPic:
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ld a, [wTrainerClass]
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and a
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ret z
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cp NUM_TRAINER_CLASSES
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ret nc
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call WaitBGMap
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xor a
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ld [hBGMapMode], a
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ld hl, TrainerPicPointers
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ld a, [wTrainerClass]
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dec a
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ld bc, 3
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call AddNTimes
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ld a, [rSVBK]
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push af
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ld a, BANK(wDecompressScratch)
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ld [rSVBK], a
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push de
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ld a, BANK(TrainerPicPointers)
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call GetFarByte
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call FixPicBank
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push af
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inc hl
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ld a, BANK(TrainerPicPointers)
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call GetFarHalfword
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pop af
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ld de, wDecompressScratch
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call FarDecompress
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pop hl
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ld de, wDecompressScratch
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ld c, 7 * 7
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ld a, [hROMBank]
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ld b, a
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call Get2bpp
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pop af
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ld [rSVBK], a
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call WaitBGMap
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ld a, $1
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ld [hBGMapMode], a
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ret
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DecompressGet2bpp:
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; Decompress lz data from b:hl to scratch space at 6:d000, then copy it to address de.
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ld a, [rSVBK]
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push af
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ld a, BANK(wDecompressScratch)
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ld [rSVBK], a
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push de
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push bc
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ld a, b
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ld de, wDecompressScratch
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call FarDecompress
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pop bc
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ld de, wDecompressScratch
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pop hl
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ld a, [hROMBank]
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ld b, a
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call Get2bpp
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pop af
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ld [rSVBK], a
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ret
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FixBackpicAlignment:
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push de
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push bc
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ld a, [wBoxAlignment]
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and a
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jr z, .keep_dims
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ld a, c
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cp 7 * 7
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ld de, 7 * 7 tiles
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jr z, .got_dims
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cp 6 * 6
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ld de, 6 * 6 tiles
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jr z, .got_dims
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ld de, 5 * 5 tiles
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.got_dims
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ld a, [hl]
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ld b, 0
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ld c, 8
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.loop
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rra
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rl b
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dec c
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jr nz, .loop
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ld a, b
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ld [hli], a
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dec de
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ld a, e
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or d
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jr nz, .got_dims
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.keep_dims
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pop bc
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pop de
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ret
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PadFrontpic:
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; pads frontpic to fill 7x7 box
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ld a, b
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cp 6
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jr z, .six
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cp 5
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jr z, .five
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.seven_loop
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ld c, 7 << 4
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call LoadOrientedFrontpic
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dec b
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jr nz, .seven_loop
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ret
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.six
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ld c, 7 << 4
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xor a
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call .Fill
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.six_loop
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ld c, (7 - 6) << 4
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xor a
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call .Fill
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ld c, 6 << 4
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call LoadOrientedFrontpic
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dec b
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jr nz, .six_loop
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ret
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.five
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ld c, 7 << 4
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xor a
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call .Fill
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.five_loop
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ld c, (7 - 5) << 4
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xor a
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call .Fill
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ld c, 5 << 4
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call LoadOrientedFrontpic
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dec b
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jr nz, .five_loop
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ld c, 7 << 4
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xor a
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call .Fill
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ret
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.Fill:
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ld [hli], a
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dec c
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jr nz, .Fill
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ret
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LoadOrientedFrontpic:
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ld a, [wBoxAlignment]
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and a
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jr nz, .x_flip
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.left_loop
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ld a, [de]
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inc de
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ld [hli], a
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dec c
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jr nz, .left_loop
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ret
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.x_flip
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push bc
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.right_loop
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ld a, [de]
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inc de
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ld b, a
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xor a
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rept 8
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rr b
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rla
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endr
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ld [hli], a
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dec c
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jr nz, .right_loop
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pop bc
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ret
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