--鉄壁の布陣
--Impenetrable Formation
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)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
	--destroy
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_FIELD)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCode(EVENT_LEAVE_FIELD)
	e2:SetCondition(s.descon)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
end
function s.filter(c)
	return c:IsFaceup() and c:IsDefenseAbove(0)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_MZONE) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if c:IsRelateToEffect(e) and tc:IsFaceup() and tc:IsRelateToEffect(e) then
		c:SetCardTarget(tc)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE+EFFECT_FLAG_OWNER_RELATE)
		e1:SetRange(LOCATION_MZONE)
		e1:SetCode(EFFECT_UPDATE_DEFENSE)
		e1:SetCondition(s.rcon)
		e1:SetValue(700)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1,true)
	end
end
function s.rcon(e)
	local tp=e:GetHandlerPlayer()
	return e:GetOwner():IsHasCardTarget(e:GetHandler()) and Duel.GetFieldGroupCount(tp,LOCATION_MZONE,0)>=2
		and not Duel.IsExistingMatchingCard(Card.IsAttackPos,tp,LOCATION_MZONE,0,1,nil)
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	local tc=e:GetHandler():GetFirstCardTarget()
	return tc and eg:IsContains(tc)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Destroy(e:GetHandler(), REASON_EFFECT)
end