pokecrystal-board/engine/events/poisonstep_pals.asm

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LoadPoisonBGPals:
call .LoadPals
ldh a, [hCGB]
and a
ret nz
ret ; ????
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.LoadPals:
ldh a, [hCGB]
and a
jr nz, .cgb
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ld a, [wTimeOfDayPal]
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maskbits NUM_DAYTIMES
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cp DARKNESS_F
ld a, %00000000
jr z, .convert_pals
ld a, %10101010
.convert_pals
call DmgToCgbBGPals
ld c, 4
call DelayFrames
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farcall _UpdateTimePals
ret
.cgb
ldh a, [rSVBK]
push af
ld a, BANK(wBGPals2)
ldh [rSVBK], a
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ld hl, wBGPals2
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ld c, 4 palettes
.loop
ld a, LOW(palred 28 + palgreen 21 + palblue 31)
ld [hli], a
ld a, HIGH(palred 28 + palgreen 21 + palblue 31)
ld [hli], a
dec c
jr nz, .loop
pop af
ldh [rSVBK], a
ld a, $1
ldh [hCGBPalUpdate], a
ld c, 4
call DelayFrames
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farcall _UpdateTimePals
ret