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Add some comments regarding 16-bit increment/decrement

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This commit is contained in:
Rangi 2021-03-24 18:34:33 -04:00
parent dc18e188b2
commit 2fe0cbbb19
2 changed files with 8 additions and 4 deletions
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2
audio/engine.asm
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@ -982,6 +982,7 @@ ApplyPitchSlide:
add hl, bc
add [hl]
ld [hl], a
; could have done "jr nc, .no_rollover / inc de / .no_rollover"
ld a, 0
adc e
ld e, a
@ -1022,6 +1023,7 @@ ApplyPitchSlide:
ld a, [hl]
add a
ld [hl], a
; could have done "jr nc, .no_rollover / dec de / .no_rollover"
ld a, e
sbc 0
ld e, a

10
engine/gfx/pic_animation.asm
View File

@ -628,14 +628,16 @@ PokeAnim_ConvertAndApplyBitmask:
call AddNTimes
ld a, [wBoxAlignment]
and a
jr nz, .go
jr nz, .subtract
; hl += [wPokeAnimBitmaskCurCol]
ld a, [wPokeAnimBitmaskCurCol]
ld e, a
ld d, 0
add hl, de
jr .skip2
jr .done
.go
.subtract
; hl -= [wPokeAnimBitmaskCurCol]
ld a, [wPokeAnimBitmaskCurCol]
ld e, a
ld a, l
@ -645,7 +647,7 @@ PokeAnim_ConvertAndApplyBitmask:
sbc 0
ld h, a
.skip2
.done
ret
.UnusedSizeData: ; unreferenced