Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 face-up monster your opponent controls; its ATK and DEF become double its current ATK and DEF, but it cannot attack directly.
--肥大化
--Massivemorph
local s,id=GetID()
function s.initial_effect(c)
	--Opponent's monster's ATK/DEF becomes doubled, but cannot attack directly
	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:SetCondition(aux.StatChangeDamageStepCondition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
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(1-tp) and chkc:IsFaceup() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,Card.IsFaceup,tp,0,LOCATION_MZONE,1,1,nil)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() then
		--ATK/DEF becomes doubled of current ATK/DEF
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetValue(tc:GetAttack()*2)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_SET_DEFENSE_FINAL)
		e2:SetValue(tc:GetDefense()*2)
		tc:RegisterEffect(e2)
		--Cannot attack directly
		local e3=Effect.CreateEffect(e:GetHandler())
		e3:SetDescription(3207)
		e3:SetProperty(EFFECT_FLAG_CLIENT_HINT)
		e3:SetType(EFFECT_TYPE_SINGLE)
		e3:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
		e3:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e3)
	end
end