--トランザクション・ロールバック
--Script by mercury233
local s,id,o=GetID()
function s.initial_effect(c)
	--copy oppo trap
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id)
	e1:SetHintTiming(TIMINGS_CHECK_MONSTER+TIMING_END_PHASE)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
	--copy self trap
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,id)
	e2:SetHintTiming(TIMINGS_CHECK_MONSTER+TIMING_CHAIN_END+TIMING_END_PHASE)
	e2:SetCost(s.cost2)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.PayLPCost(tp,math.floor(Duel.GetLP(tp)/2))
end
function s.cost2(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return c:IsAbleToRemoveAsCost() end
	Duel.Remove(c,POS_FACEUP,REASON_COST)
	Duel.PayLPCost(tp,math.floor(Duel.GetLP(tp)/2))
end
function s.filter(c)
	return c:GetType()==TYPE_TRAP and not c:IsCode(id,79766336) and c:CheckActivateEffect(false,true,false)~=nil
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then
		local te=e:GetLabelObject()
		local tg=te:GetTarget()
		return tg and tg(e,tp,eg,ep,ev,re,r,rp,0,chkc)
	end
	local loc1,loc2=0,LOCATION_GRAVE
	if e:GetType()&EFFECT_TYPE_QUICK_O>0 then loc1,loc2=LOCATION_GRAVE,0 end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,loc1,loc2,1,nil) end
	e:SetProperty(EFFECT_FLAG_CARD_TARGET)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	local g=Duel.SelectTarget(tp,s.filter,tp,loc1,loc2,1,1,nil)
	local te,ceg,cep,cev,cre,cr,crp=g:GetFirst():CheckActivateEffect(false,true,true)
	Duel.ClearTargetCard()
	g:GetFirst():CreateEffectRelation(e)
	local tg=te:GetTarget()
	e:SetProperty(te:GetProperty())
	if tg then tg(e,tp,ceg,cep,cev,cre,cr,crp,1) end
	te:SetLabelObject(e:GetLabelObject())
	e:SetLabelObject(te)
	Duel.ClearOperationInfo(0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local te=e:GetLabelObject()
	if not te then return end
	local tc=te:GetHandler()
	if not (tc:IsRelateToEffect(e) and tc:GetType()==TYPE_TRAP) then return end
	e:SetLabelObject(te:GetLabelObject())
	local op=te:GetOperation()
	if op then op(e,tp,eg,ep,ev,re,r,rp) end
end
