--ダブル・バンキング
--Double Banking
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:SetCondition(s.condition)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsAbleToEnterBP() or (Duel.GetCurrentPhase()>=PHASE_BATTLE_START and Duel.GetCurrentPhase()<=PHASE_BATTLE)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,e:GetHandler()) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST+REASON_DISCARD)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsFaceup,tp,LOCATION_MZONE,0,1,nil) end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,nil)
	local tc=g:GetFirst()
	while tc do
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e1:SetCode(EVENT_BATTLE_DESTROYING)
		e1:SetRange(LOCATION_MZONE)
		e1:SetCondition(s.atkcon)
		e1:SetOperation(s.atkop)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD+RESET_PHASE+PHASE_END)
		tc:RegisterEffect(e1)
		tc=g:GetNext()
	end
end
function s.atkcon(e,tp,eg,ep,ev,re,r,rp)
	return aux.bdocon(e,tp,eg,ep,ev,re,r,rp) and e:GetHandler():CanChainAttack()
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	Duel.ChainAttack()
end