--砂塵のバリア －ダスト・フォース－
function c40838625.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetCondition(c40838625.condition)
	e1:SetTarget(c40838625.target)
	e1:SetOperation(c40838625.activate)
	c:RegisterEffect(e1)
end
function c40838625.condition(e,tp,eg,ep,ev,re,r,rp)
	return tp~=Duel.GetTurnPlayer()
end
function c40838625.filter(c)
	return c:IsAttackPos() and c:IsCanTurnSet()
end
function c40838625.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c40838625.filter,tp,0,LOCATION_MZONE,1,nil) end
	local g=Duel.GetMatchingGroup(c40838625.filter,tp,0,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,g:GetCount(),0,0)
end
function c40838625.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(c40838625.filter,tp,0,LOCATION_MZONE,nil)
	if Duel.ChangePosition(g,POS_FACEDOWN_DEFENSE)~=0 then
		local og=Duel.GetOperatedGroup()
		local tc=og:GetFirst()
		while tc do
			local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_CANNOT_CHANGE_POSITION)
			e1:SetReset(RESET_EVENT+RESETS_STANDARD)
			tc:RegisterEffect(e1)
			tc=og:GetNext()
		end
	end
end
