--二重融合
local s,id,o=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_FUSION_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.fusion_effect=true
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.CheckLPCost(tp,500) end
	Duel.PayLPCost(tp,500)
end
function s.filter1(c,e)
	return not c:IsImmuneToEffect(e)
end
function s.filter2(c,e,tp,m,f,chkf)
	return c:IsType(TYPE_FUSION) and (not f or f(c))
		and c:IsCanBeSpecialSummoned(e,SUMMON_TYPE_FUSION,tp,false,false) and c:CheckFusionMaterial(m,nil,chkf)
end
function s.fcon(e,tp)
	local chkf=tp
	local mg1=Duel.GetFusionMaterial(tp):Filter(s.filter1,nil,e)
	local res=Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg1,nil,chkf)
	if not res then
		local ce=Duel.GetChainMaterial(tp)
		if ce~=nil then
			local fgroup=ce:GetTarget()
			local mg2=fgroup(ce,e,tp)
			local mf=ce:GetValue()
			res=Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg2,mf,chkf)
		end
	end
	return res
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return s.fcon(e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
end
function s.fop(e,tp,eg,ep,ev,re,r,rp)
	local chkf=tp
	local mg1=Duel.GetFusionMaterial(tp):Filter(s.filter1,nil,e)
	local sg1=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg1,nil,chkf)
	local mg2=nil
	local sg2=nil
	local ce=Duel.GetChainMaterial(tp)
	if ce~=nil then
		local fgroup=ce:GetTarget()
		mg2=fgroup(ce,e,tp)
		local mf=ce:GetValue()
		sg2=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg2,mf,chkf)
	end
	if sg1:GetCount()>0 or (sg2~=nil and sg2:GetCount()>0) then
		local sg=sg1:Clone()
		if sg2 then sg:Merge(sg2) end
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local tg=sg:Select(tp,1,1,nil)
		local tc=tg:GetFirst()
		if sg1:IsContains(tc) and (sg2==nil or not sg2:IsContains(tc) or ce and not Duel.SelectYesNo(tp,ce:GetDescription())) then
			local mat1=Duel.SelectFusionMaterial(tp,tc,mg1,nil,chkf)
			tc:SetMaterial(mat1)
			Duel.SendtoGrave(mat1,REASON_EFFECT+REASON_MATERIAL+REASON_FUSION)
			Duel.BreakEffect()
			Duel.SpecialSummon(tc,SUMMON_TYPE_FUSION,tp,tp,false,false,POS_FACEUP)
		elseif ce~=nil then
			local mat2=Duel.SelectFusionMaterial(tp,tc,mg2,nil,chkf)
			local fop=ce:GetOperation()
			fop(ce,e,tp,tc,mat2)
		end
		tc:CompleteProcedure()
		return 1
	end
	return 0
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if s.fop(e,tp,eg,ep,ev,re,r,rp)>0 then
		Duel.Readjust()
		if s.fcon(e,tp) and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
			Duel.BreakEffect()
			s.fop(e,tp,eg,ep,ev,re,r,rp)
		end
	end
end
