local cm,m=GetID()
cm.name="地层调查"
function cm.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(cm.target)
	e1:SetOperation(cm.activate)
	c:RegisterEffect(e1)
end
--Activate
function cm.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local ct=Duel.GetFieldGroupCount(tp,0,LOCATION_ONFIELD)
	if chk==0 then return ct>0 and Duel.GetFieldGroupCount(tp,LOCATION_DECK,0)>=ct end
end
function cm.activate(e,tp,eg,ep,ev,re,r,rp)
	local ct=Duel.GetFieldGroupCount(tp,0,LOCATION_ONFIELD)
	if Duel.GetFieldGroupCount(tp,LOCATION_DECK,0)<ct then return end
	Duel.ConfirmDecktop(tp,ct)
	local op=Duel.SelectOption(tp,aux.Stringid(m,1),aux.Stringid(m,2))
	if ct>1 then Duel.SortDecktop(tp,tp,ct) end
	if op==1 then
		RD.SendDeckTopToBottom(tp,ct)
	end
end