Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Monsters cannot attack face-down Defense Position monsters, but can attack directly if all monsters their opponent controls are face-down Defense Position. Your opponent takes no damage. When an opponent's monster declares a direct attack: You can add 1 "Ghostrick" card from your Deck to your hand.
--ゴーストリック・パレード
--Ghostrick Parade
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--atklimit
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
	e2:SetRange(LOCATION_FZONE)
	e2:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e2:SetValue(aux.TargetBoolFunction(Card.IsFacedown))
	c:RegisterEffect(e2)
	--direct attack
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD)
	e3:SetCode(EFFECT_DIRECT_ATTACK)
	e3:SetRange(LOCATION_FZONE)
	e3:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e3:SetTarget(s.dirtg)
	c:RegisterEffect(e3)
	--tohand
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,0))
	e4:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e4:SetCode(EVENT_ATTACK_ANNOUNCE)
	e4:SetRange(LOCATION_FZONE)
	e4:SetCondition(s.thcon)
	e4:SetTarget(s.thtg)
	e4:SetOperation(s.thop)
	c:RegisterEffect(e4)
	--
	local e5=Effect.CreateEffect(c)
	e5:SetType(EFFECT_TYPE_FIELD)
	e5:SetCode(EFFECT_CHANGE_DAMAGE)
	e5:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e5:SetRange(LOCATION_FZONE)
	e5:SetTargetRange(0,1)
	e5:SetValue(0)
	c:RegisterEffect(e5)
	local e6=e5:Clone()
	e6:SetCode(EFFECT_NO_EFFECT_DAMAGE)
	c:RegisterEffect(e6)
end
s.listed_series={SET_GHOSTRICK}
function s.dirtg(e,c)
	return not Duel.IsExistingMatchingCard(Card.IsFaceup,c:GetControler(),0,LOCATION_MZONE,1,nil)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetAttacker():IsControler(1-tp) and Duel.GetAttackTarget()==nil
end
function s.filter(c)
	return c:IsSetCard(SET_GHOSTRICK) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end