Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card is changed to Defense Position when it is Normal Summoned or Flip Summoned. Monsters with A-Counters cannot declare an attack.
--エーリアン・サイコ
--Alien Psychic
local s,id=GetID()
function s.initial_effect(c)
	--to defense
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_TRIGGER_F+EFFECT_TYPE_SINGLE)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetTarget(s.potg)
	e1:SetOperation(s.poop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_FLIP_SUMMON_SUCCESS)
	c:RegisterEffect(e2)
	--cannot attack announce
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD)
	e3:SetRange(LOCATION_MZONE)
	e3:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e3:SetCode(EFFECT_CANNOT_ATTACK_ANNOUNCE)
	e3:SetTarget(s.atktg)
	c:RegisterEffect(e3)
end
s.counter_list={COUNTER_A}
function s.potg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAttackPos() end
	Duel.SetOperationInfo(0,CATEGORY_POSITION,e:GetHandler(),1,0,0)
end
function s.poop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsFaceup() and c:IsAttackPos() and c:IsRelateToEffect(e) then
		Duel.ChangePosition(c,POS_FACEUP_DEFENSE)
	end
end
function s.atktg(e,c)
	return c:GetCounter(COUNTER_A)>0
end