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INCLUDE "constants.asm"
SECTION "home/fade.asm", ROM0
Function0343::
ld a, [wTimeOfDayPal] ; tells if current map is dark
ld b, a
ld hl, FadePal4
ld a, l
sub b
ld l, a
jr nc, .okay
dec h
.okay
ld a, [hli]
ld [rBGP], a
ld a, [hli]
ld [rOBP0], a
ld a, [hli]
ld [rOBP1], a
ret
GBFadeInFromBlack::
ld hl, FadePal1
ld b, 4
jr _GBFadeIncCommon
GBFadeOutToWhite::
ld hl, FadePal6
ld b, 3
_GBFadeIncCommon:
; Rotate palettes to the right and fill with loaded colors from the left.
; If we're already at the leftmost color, fill with the leftmost color.
.loop
ld a, [hli]
ld [rBGP], a
ld a, [hli]
ld [rOBP0], a
ld a, [hli]
ld [rOBP1], a
ld c, 8
call DelayFrames
dec b
jr nz, .loop
ret
GBFadeOutToBlack::
ld hl, FadePal5 - 1
ld b, 4
jr _GBFadeDecCommon
GBFadeInFromWhite::
ld hl, FadePal8 - 1
ld b, 3
_GBFadeDecCommon:
; Rotate palettes to the left and fill with loaded colors from the right.
; If we're already at the rightmost color, fill with the rightmost color.
.loop
ld a, [hld]
ld [rOBP1], a
ld a, [hld]
ld [rOBP0], a
ld a, [hld]
ld [rBGP], a
ld c, 8
call DelayFrames
dec b
jr nz, .loop
ret
FadePal1:: db %11111111, %11111111, %11111111
FadePal2:: db %11111110, %11111110, %11111000
FadePal3:: db %11111001, %11100100, %11100100
FadePal4:: db %11100100, %11010000, %11100000
; rBGP rOBP0 rOBP1
FadePal5:: db %11100100, %11010000, %11100000
FadePal6:: db %10010000, %10000000, %10010000
FadePal7:: db %01000000, %01000000, %01000000
FadePal8:: db %00000000, %00000000, %00000000
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