pokecrystal-board/engine/gfx/load_pics.asm

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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:
; atk def spd spc
; .ww..xx. .yy..zz.
; atk
ld a, [hl]
and %01100000
sla a
ld b, a
; def
ld a, [hli]
and %00000110
swap a
srl a
or b
ld b, a
; spd
ld a, [hl]
and %01100000
swap a
sla a
or b
ld b, a
; spc
ld a, [hl]
and %00000110
srl a
or b
; Divide by 10 to get 0-25
ldh [hDividend + 3], a
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xor a
ldh [hDividend], a
ldh [hDividend + 1], a
ldh [hDividend + 2], a
ld a, $ff / NUM_UNOWN + 1
ldh [hDivisor], a
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ld b, 4
call Divide
; Increment to get 1-26
ldh a, [hQuotient + 3]
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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]
ld [wCurSpecies], a
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call IsAPokemon
ret c
ldh a, [rSVBK]
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push af
call _GetFrontpic
pop af
ldh [rSVBK], a
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ret
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GetAnimatedFrontpic:
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ld a, [wCurPartySpecies]
ld [wCurSpecies], a
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call IsAPokemon
ret c
ldh a, [rSVBK]
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push af
xor a
ldh [hBGMapMode], a
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call _GetFrontpic
call GetAnimatedEnemyFrontpic
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pop af
ldh [rSVBK], a
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ret
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_GetFrontpic:
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push de
call GetBaseData
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ld a, [wBasePicSize]
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and $f
ld b, a
push bc
call GetFrontpicPointer
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ld a, BANK(wDecompressEnemyFrontpic)
ldh [rSVBK], a
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ld a, b
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ld de, wDecompressEnemyFrontpic
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call FarDecompress
pop bc
ld hl, wDecompressScratch
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ld de, wDecompressEnemyFrontpic
call PadFrontpic
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pop hl
push hl
ld de, wDecompressScratch
ld c, 7 * 7
ldh a, [hROMBank]
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ld b, a
call Get2bpp
pop hl
ret
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GetFrontpicPointer:
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ld a, [wCurPartySpecies]
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cp UNOWN
jr z, .unown
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ld a, [wCurPartySpecies]
ld d, BANK(PokemonPicPointers)
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jr .ok
.unown
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ld a, [wUnownLetter]
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ld d, BANK(UnownPicPointers)
.ok
ld hl, PokemonPicPointers ; UnownPicPointers
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dec a
ld bc, 6
call AddNTimes
ld a, d
call GetFarByte
call FixPicBank
push af
inc hl
ld a, d
call GetFarWord
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pop bc
ret
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GetAnimatedEnemyFrontpic:
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ld a, BANK(vTiles3)
ldh [rVBK], a
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push hl
ld de, wDecompressScratch
ld c, 7 * 7
ldh a, [hROMBank]
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ld b, a
call Get2bpp
pop hl
ld de, 7 * 7 tiles
add hl, de
push hl
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ld a, BANK(wBasePicSize)
ld hl, wBasePicSize
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call GetFarWRAMByte
pop hl
and $f
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ld de, wDecompressEnemyFrontpic + 5 * 5 tiles
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ld c, 5 * 5
cp 5
jr z, .got_dims
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ld de, wDecompressEnemyFrontpic + 6 * 6 tiles
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ld c, 6 * 6
cp 6
jr z, .got_dims
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ld de, wDecompressEnemyFrontpic + 7 * 7 tiles
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ld c, 7 * 7
.got_dims
push hl
push bc
call LoadFrontpicTiles
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pop bc
pop hl
ld de, wDecompressScratch
ldh a, [hROMBank]
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ld b, a
call Get2bpp
xor a
ldh [rVBK], a
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ret
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LoadFrontpicTiles:
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ld hl, wDecompressScratch
swap c
ld a, c
and $f
ld b, a
ld a, c
and $f0
ld c, a
push bc
call LoadOrientedFrontpic
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pop bc
.loop
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push bc
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ld c, 0
call LoadOrientedFrontpic
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pop bc
dec b
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
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
ldh a, [rSVBK]
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push af
ld a, BANK(wDecompressScratch)
ldh [rSVBK], a
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push de
; These are assumed to be at the same address in their respective banks.
assert PokemonPicPointers == UnownPicPointers
ld hl, PokemonPicPointers
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ld a, b
ld d, BANK(PokemonPicPointers)
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cp UNOWN
jr nz, .ok
ld a, c
ld d, BANK(UnownPicPointers)
.ok
dec a
ld bc, 6
call AddNTimes
ld bc, 3
add hl, bc
ld a, d
call GetFarByte
call FixPicBank
push af
inc hl
ld a, d
call GetFarWord
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ld de, wDecompressScratch
pop af
call FarDecompress
ld hl, wDecompressScratch
ld c, 6 * 6
call FixBackpicAlignment
pop hl
ld de, wDecompressScratch
ldh a, [hROMBank]
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ld b, a
call Get2bpp
pop af
ldh [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
EXPORT PICS_FIX
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push hl
push bc
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sub BANK("Pics 1") - PICS_FIX
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ld c, a
ld b, 0
ld hl, .PicsBanks
add hl, bc
ld a, [hl]
pop bc
pop hl
ret
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.PicsBanks:
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db BANK("Pics 1") ; BANK("Pics 1") + 0
db BANK("Pics 2") ; BANK("Pics 1") + 1
db BANK("Pics 3") ; BANK("Pics 1") + 2
db BANK("Pics 4") ; BANK("Pics 1") + 3
db BANK("Pics 5") ; BANK("Pics 1") + 4
db BANK("Pics 6") ; BANK("Pics 1") + 5
db BANK("Pics 7") ; BANK("Pics 1") + 6
db BANK("Pics 8") ; BANK("Pics 1") + 7
db BANK("Pics 9") ; BANK("Pics 1") + 8
db BANK("Pics 10") ; BANK("Pics 1") + 9
db BANK("Pics 11") ; BANK("Pics 1") + 10
db BANK("Pics 12") ; BANK("Pics 1") + 11
db BANK("Pics 13") ; BANK("Pics 1") + 12
db BANK("Pics 14") ; BANK("Pics 1") + 13
db BANK("Pics 15") ; BANK("Pics 1") + 14
db BANK("Pics 16") ; BANK("Pics 1") + 15
db BANK("Pics 17") ; BANK("Pics 1") + 16
db BANK("Pics 18") ; BANK("Pics 1") + 17
db BANK("Pics 19") ; BANK("Pics 1") + 18
db BANK("Pics 20") ; BANK("Pics 1") + 19
db BANK("Pics 21") ; BANK("Pics 1") + 20
db BANK("Pics 22") ; BANK("Pics 1") + 21
db BANK("Pics 23") ; BANK("Pics 1") + 22
db BANK("Pics 24") ; BANK("Pics 1") + 23
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GSIntro_GetMonFrontpic: ; unreferenced
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ld a, c
push de
ld hl, PokemonPicPointers
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dec a
ld bc, 6
call AddNTimes
ld a, BANK(PokemonPicPointers)
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call GetFarByte
call FixPicBank
push af
inc hl
ld a, BANK(PokemonPicPointers)
call GetFarWord
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pop af
pop de
call FarDecompress
ret
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GetTrainerPic:
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ld a, [wTrainerClass]
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and a
ret z
cp NUM_TRAINER_CLASSES + 1
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ret nc
call WaitBGMap
xor a
ldh [hBGMapMode], a
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ld hl, TrainerPicPointers
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ld a, [wTrainerClass]
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dec a
ld bc, 3
call AddNTimes
ldh a, [rSVBK]
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push af
ld a, BANK(wDecompressScratch)
ldh [rSVBK], a
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push de
ld a, BANK(TrainerPicPointers)
call GetFarByte
call FixPicBank
push af
inc hl
ld a, BANK(TrainerPicPointers)
call GetFarWord
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pop af
ld de, wDecompressScratch
call FarDecompress
pop hl
ld de, wDecompressScratch
ld c, 7 * 7
ldh a, [hROMBank]
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ld b, a
call Get2bpp
pop af
ldh [rSVBK], a
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call WaitBGMap
ld a, 1
ldh [hBGMapMode], a
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ret
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DecompressGet2bpp:
; Decompress lz data from b:hl to wDecompressScratch, then copy it to address de.
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ldh a, [rSVBK]
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push af
ld a, BANK(wDecompressScratch)
ldh [rSVBK], a
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push de
push bc
ld a, b
ld de, wDecompressScratch
call FarDecompress
pop bc
ld de, wDecompressScratch
pop hl
ldh a, [hROMBank]
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ld b, a
call Get2bpp
pop af
ldh [rSVBK], a
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ret
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FixBackpicAlignment:
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push de
push bc
ld a, [wBoxAlignment]
and a
jr z, .keep_dims
ld a, c
cp 7 * 7
ld de, 7 * 7 tiles
jr z, .got_dims
cp 6 * 6
ld de, 6 * 6 tiles
jr z, .got_dims
ld de, 5 * 5 tiles
.got_dims
ld a, [hl]
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ld b, 0
ld c, 8
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.loop
rra
rl b
dec c
jr nz, .loop
ld a, b
ld [hli], a
dec de
ld a, e
or d
jr nz, .got_dims
.keep_dims
pop bc
pop de
ret
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PadFrontpic:
; pads frontpic to fill 7x7 box
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ld a, b
cp 6
jr z, .six
cp 5
jr z, .five
.seven_loop
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ld c, 7 << 4
call LoadOrientedFrontpic
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dec b
jr nz, .seven_loop
ret
.six
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ld c, 7 << 4
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xor a
call .Fill
.six_loop
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ld c, (7 - 6) << 4
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xor a
call .Fill
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ld c, 6 << 4
call LoadOrientedFrontpic
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dec b
jr nz, .six_loop
ret
.five
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ld c, 7 << 4
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xor a
call .Fill
.five_loop
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ld c, (7 - 5) << 4
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xor a
call .Fill
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ld c, 5 << 4
call LoadOrientedFrontpic
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dec b
jr nz, .five_loop
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ld c, 7 << 4
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xor a
call .Fill
ret
.Fill:
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ld [hli], a
dec c
jr nz, .Fill
ret
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LoadOrientedFrontpic:
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ld a, [wBoxAlignment]
and a
jr nz, .x_flip
.left_loop
ld a, [de]
inc de
ld [hli], a
dec c
jr nz, .left_loop
ret
.x_flip
push bc
.right_loop
ld a, [de]
inc de
ld b, a
xor a
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rept 8
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rr b
rla
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endr
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ld [hli], a
dec c
jr nz, .right_loop
pop bc
ret