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GivePokerusAndConvertBerries: ; 2ed44
call ConvertBerriesToBerryJuice
ld hl, PartyMon1PokerusStatus
ld a, [PartyCount]
ld b, a
ld de, PARTYMON_STRUCT_LENGTH
; Check to see if any of your Pokemon already has Pokerus.
; If so, sample its spread through your party.
; This means that you cannot get Pokerus de novo while
; a party member has an active infection.
.loopMons
ld a, [hl]
and $f
jr nz, .TrySpreadPokerus
add hl, de
dec b
jr nz, .loopMons
; If we haven't been to Goldenrod City at least once,
; prevent the contraction of Pokerus.
ld hl, StatusFlags2
bit 6, [hl]
ret z
call Random
ld a, [hRandomAdd]
and a
ret nz
ld a, [hRandomSub]
cp $3
ret nc ; 3/65536 chance (00 00, 00 01 or 00 02)
ld a, [PartyCount]
ld b, a
.randomMonSelectLoop
call Random
and $7
cp b
jr nc, .randomMonSelectLoop
ld hl, PartyMon1PokerusStatus
call GetPartyLocation ; get pokerus byte of random mon
ld a, [hl]
and $f0
ret nz ; if it already has pokerus, do nothing
.randomPokerusLoop ; Simultaneously sample the strain and duration
call Random
and a
jr z, .randomPokerusLoop
ld b, a
and $f0
jr z, .load_pkrs
ld a, b
and $7
inc a
.load_pkrs
ld b, a ; this should come before the label
swap b
and $3
inc a
add b
ld [hl], a
ret
.TrySpreadPokerus:
call Random
cp 1 + 33 percent
ret nc ; 1/3 chance
ld a, [PartyCount]
cp 1
ret z ; only one mon, nothing to do
ld c, [hl]
ld a, b
cp 2
jr c, .checkPreviousMonsLoop ; no more mons after this one, go backwards
call Random
cp 1 + 50 percent
jr c, .checkPreviousMonsLoop ; 1/2 chance, go backwards
.checkFollowingMonsLoop
add hl, de
ld a, [hl]
and a
jr z, .infectMon
ld c, a
and $3
ret z ; if mon has cured pokerus, stop searching
dec b ; go on to next mon
ld a, b
cp 1
jr nz, .checkFollowingMonsLoop ; no more mons left
ret
.checkPreviousMonsLoop
ld a, [PartyCount]
cp b
ret z ; no more mons
ld a, l
sub e
ld l, a
ld a, h
sbc d
ld h, a
ld a, [hl]
and a
jr z, .infectMon
ld c, a
and $3
ret z ; if mon has cured pokerus, stop searching
inc b ; go on to next mon
jr .checkPreviousMonsLoop
.infectMon
ld a, c
and $f0
ld b, a
ld a, c
swap a
and $3
inc a
add b
ld [hl], a
ret
; any berry held by a Shuckle may be converted to berry juice
ConvertBerriesToBerryJuice: ; 2ede6
ld hl, StatusFlags2
bit 6, [hl]
ret z
call Random
cp $10
ret nc ; 1/16 chance
ld hl, PartyMons
ld a, [PartyCount]
.partyMonLoop
push af
push hl
ld a, [hl]
cp SHUCKLE
jr nz, .loopMon
ld bc, MON_ITEM
add hl, bc
ld a, [hl]
cp BERRY
jr z, .convertToJuice
.loopMon
pop hl
ld bc, PARTYMON_STRUCT_LENGTH
add hl, bc
pop af
dec a
jr nz, .partyMonLoop
ret
.convertToJuice
ld a, BERRY_JUICE
ld [hl], a
pop hl
pop af
ret
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