--スノーマン・エフェクト
--Snowman Effect
--Scripted by ahtelel
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(TIMING_DAMAGE_STEP)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCondition(aux.StatChangeDamageStepCondition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	aux.GlobalCheck(s,function()
		local ge1=Effect.CreateEffect(c)
		ge1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		ge1:SetCode(EVENT_ATTACK_ANNOUNCE)
		ge1:SetOperation(s.checkop)
		Duel.RegisterEffect(ge1,0)
	end)
end
function s.checkop(e,tp,eg,ep,ev,re,r,rp)
	local tc=eg:GetFirst()
	if tc:GetFlagEffect(id)==0 and Duel.GetAttackTarget()==nil then
		tc:RegisterFlagEffect(id,RESETS_STANDARD_PHASE_END,0,1)
	end
end
function s.filter(c,tp)
	return c:IsFaceup() and c:GetFlagEffect(id)==0 and Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_MZONE,0,1,c)
end
function s.filter2(c)
	return c:IsFaceup() and c:GetBaseAttack()>0
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc,tp) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil,tp)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) then
		local atk=0
		local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,tc)
		local bc=g:GetFirst()
		for bc in aux.Next(g) do
			atk=atk+math.max(bc:GetBaseAttack(),0)
		end
		--Gain ATK
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetValue(atk)
		tc:RegisterEffect(e1)
		--Cannot attack directly
		local e2=Effect.CreateEffect(c)
		e2:SetDescription(3207)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_CLIENT_HINT)
		e2:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e2)
	end
end