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|
_Joypad::
ld a, [hJoyInput]
cp A_BUTTON + B_BUTTON + SELECT + START ; soft reset
jp z, TrySoftReset
ld b, a
ld a, [hJoyHeldLast]
ld e, a
xor b
ld d, a
and e
ld [hJoyReleased], a
ld a, d
and b
ld [hJoyPressed], a
ld a, b
ld [hJoyHeldLast], a
ld a, [wd730]
bit 5, a
jr nz, DiscardButtonPresses
ld a, [hJoyHeldLast]
ld [hJoyHeld], a
ld a, [wJoyIgnore]
and a
ret z
cpl
ld b, a
ld a, [hJoyHeld]
and b
ld [hJoyHeld], a
ld a, [hJoyPressed]
and b
ld [hJoyPressed], a
ret
DiscardButtonPresses:
xor a
ld [hJoyHeld], a
ld [hJoyPressed], a
ld [hJoyReleased], a
ret
TrySoftReset:
call DelayFrame
; reset joypad (to make sure the
; player is really trying to reset)
ld a, $30
ld [rJOYP], a
ld hl, hSoftReset
dec [hl]
jp z, SoftReset
jp Joypad
|
