Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Discard 1 monster, then target 1 face-up monster on the field; its ATK and DEF becomes the discarded monster's ATK and DEF, until the end of this turn. Monsters you control cannot attack directly during the turn you activate this card.
--共闘
--Unified Front
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE)
	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:SetCost(s.cost)
	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.check)
		Duel.RegisterEffect(ge1,0)
	end)
end
function s.check(e,tp,eg,ep,ev,re,r,rp)
	local tc=eg:GetFirst()
	if Duel.GetAttackTarget()==nil then
		Duel.RegisterFlagEffect(tc:GetControler(),id,RESET_PHASE|PHASE_END,0,1)
	end
end
function s.cfilter(c)
	return c:IsMonster() and c:IsDiscardable() and c:GetAttack()>=0 and c:GetDefense()>=0
		and Duel.IsExistingTarget(s.tgfilter,0,LOCATION_MZONE,LOCATION_MZONE,1,nil,c)
end
function s.tgfilter(c,dc)
	return c:IsFaceup() and (c:GetAttack()~=dc:GetAttack() or c:GetDefense()~=dc:GetDefense())
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	e:SetLabel(1)
	return true
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsFaceup() and s.tgfilter(chkc,e:GetLabelObject()) end
	if chk==0 then
		if e:GetLabel()~=1 then return false end
		e:SetLabel(0)
		return Duel.GetFlagEffect(tp,id)==0
			and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_HAND,0,1,nil)
	end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DISCARD)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_HAND,0,1,1,nil)
	Duel.SendtoGrave(g,REASON_COST|REASON_DISCARD)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.tgfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil,g:GetFirst())
	e:SetLabelObject(g:GetFirst())
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
	e1:SetProperty(EFFECT_FLAG_OATH+EFFECT_FLAG_IGNORE_IMMUNE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local cc=e:GetLabelObject()
	local atk=cc:GetAttack()
	local def=cc:GetDefense()
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetValue(atk)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
		local e2=Effect.CreateEffect(e:GetHandler())
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_SET_DEFENSE_FINAL)
		e2:SetValue(def)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e2)
	end
end