--created & coded by Lyris, art by Ellysiumn of DeviantArt
--機氷竜バリアー
local s,id,o=GetID()
function s.initial_effect(c)
	aux.AddCodeList(c,id-5)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_IMMUNE_EFFECT)
	e2:SetRange(LOCATION_FZONE)
	e2:SetValue(s.efilter)
	e2:SetLabelObject(c)
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_GRANT)
	e3:SetRange(LOCATION_SZONE)
	e3:SetTargetRange(LOCATION_FZONE,0)
	e3:SetTarget(aux.TargetBoolFunction(Card.IsCode,id-5))
	e3:SetLabelObject(e2)
	c:RegisterEffect(e3)
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_QUICK_O)
	e4:SetCode(EVENT_FREE_CHAIN)
	e4:SetRange(LOCATION_GRAVE)
	e4:SetCountLimit(1,id)
	e4:SetCondition(aux.exccon)
	e4:SetCost(aux.bfgcost)
	e4:SetTarget(s.target)
	e4:SetOperation(s.operation)
	c:RegisterEffect(e4)
	if not s.global_check then
		s.global_check=true
		s[0]={}
		s[1]={}
		local race=1
		while race<RACE_ALL do
			s[0][race]=0
			s[1][race]=0
			race=race<<1
		end
		local ge1=Effect.CreateEffect(c)
		ge1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		ge1:SetCode(EVENT_SPSUMMON_SUCCESS)
		ge1:SetOperation(s.rchk)
		Duel.RegisterEffect(ge1,0)
	end
	c:SetUniqueOnField(1,0,id)
end
function s.efilter(e,re)
	return e:GetHandler()~=re:GetOwner() and re:GetOwner()~=e:GetLabelObject()
end
function s.cfilter(c,tp,rc)
	return c:IsSummonPlayer(tp) and c:IsRace(rc)
end
function s.rchk(e,tp,eg)
	for p=0,1 do if Duel.GetFlagEffect(p,id)>0 then
		local rc=1
		while rc<RACE_ALL do
			if eg:IsExists(s.cfilter,1,nil,p,rc) then s[p][rc]=s[p][rc]+1 end
			rc=rc<<1
		end
	end end
end
function s.lim(e,c,sump,sumtype,sumpos,targetp)
	if sumpos and bit.band(sumpos,POS_FACEDOWN)>0 then return false end
	local tp=sump
	if targetp then tp=targetp end
	return s[tp][c:GetRace()] and s[tp][c:GetRace()]>1
end
function s.filter(c,tp)
	return c:IsCode(id-5) and c:IsType(TYPE_FIELD) and c:GetActivateEffect():IsActivatable(tp,true,true)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil,tp) end
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOFIELD)
	local sc=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil,tp):GetFirst()
	Duel.MoveToField(sc,tp,tp,LOCATION_FZONE,POS_FACEUP,true)
	local te=sc:GetActivateEffect()
	te:UseCountLimit(tp,1,true)
	local tep=sc:GetControler()
	local cost=te:GetCost()
	if cost then cost(te,tep,eg,ep,ev,re,r,rp,1) end
	Duel.RaiseEvent(sc,4179255,te,0,tp,tp,Duel.GetCurrentChain())
	if Duel.GetFlagEffect(tp,id)==0 then
		local rc=1
		while rc<RACE_ALL do s[tp][rc]=0 rc=rc<<1 end
		Duel.RegisterFlagEffect(tp,id,RESET_PHASE+PHASE_END,0,2)
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_LIMIT_SPECIAL_SUMMON_POSITION)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
		e1:SetTargetRange(1,0)
		e1:SetTarget(s.lim)
		e1:SetReset(RESET_PHASE+PHASE_END,2)
		Duel.RegisterEffect(e1,tp)
	end
end