shithub: pokecrystal

ref: e4d60b4e5bdbb2303452e3c7f470e6eb02cae68c
dir: /engine/events/pokerus/check_pokerus.asm/

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_CheckPokerus:
; Return carry if a monster in your party has Pokerus

; Get number of monsters to iterate over
	ld a, [wPartyCount]
	and a
	jr z, .NoPokerus
	ld b, a
; Check each monster in the party for Pokerus
	ld hl, wPartyMon1PokerusStatus
	ld de, PARTYMON_STRUCT_LENGTH
.Check:
	ld a, [hl]
	and $0f ; only the bottom nybble is used
	jr nz, .HasPokerus
; Next PartyMon
	add hl, de
	dec b
	jr nz, .Check
.NoPokerus:
	and a
	ret
.HasPokerus:
	scf
	ret