Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When an opponent's monster declares a direct attack while this card is in your hand: You can Special Summon this card in Attack Position, and if you do, change all face-up monsters your opponent controls to Defense Position.
--SRメンコート
--Speedroid Menko
local s,id=GetID()
function s.initial_effect(c)
	--spsummon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetAttacker():GetControler()~=tp and Duel.GetAttackTarget()==nil
end
function s.filter(c)
	return c:IsPosition(POS_FACEUP_ATTACK) and c:IsCanChangePosition()
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,0,LOCATION_MZONE,1,nil)
		and Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and e:GetHandler():IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP) end
	local g=Duel.GetMatchingGroup(s.filter,tp,0,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,e:GetHandler(),1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,#g,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	if Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP_ATTACK)~=0 then
		local g=Duel.GetMatchingGroup(s.filter,tp,0,LOCATION_MZONE,nil)
		Duel.ChangePosition(g,POS_FACEUP_DEFENSE)
	end
end