--Hollohom Echoes
local ref,id=GetID()
xpcall(function() require("expansions/script/Hollohom") end,function() require("script/Hollohom") end)
function ref.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetTarget(ref.destg)
	e1:SetOperation(ref.desop)
	c:RegisterEffect(e1)
	--Recurr
	local e2=Effect.CreateEffect(c)
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,id)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCost(aux.bfgcost)
	e2:SetTarget(ref.thtg)
	e2:SetOperation(ref.thop)
	c:RegisterEffect(e2)
end

--Activate
function ref.desfilter(c) return c:IsType(TYPE_SPELL+TYPE_TRAP) and not c:IsType(TYPE_FIELD) end
function ref.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingTarget(ref.desfilter,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,c) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,ref.desfilter,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,c)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function ref.desop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.Destroy(tc,REASON_EFFECT) and Duel.GetFlagEffect(tp,id)==0 and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
		Duel.RegisterFlagEffect(tp,id,0,EFFECT_FLAG_CLIENT_HINT,0,1,aux.Stringid(id,1))
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
		e1:SetCode(EFFECT_CANNOT_ACTIVATE)
		e1:SetTargetRange(1,0)
		e1:SetValue(function(e,re,tp) return re:IsActiveType(TYPE_FIELD) end)
		Duel.RegisterEffect(e1,tp)
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_FIELD)
		e2:SetCode(EFFECT_CHANGE_ENVIRONMENT)
		e2:SetValue(Hollohom.ID)
		Duel.RegisterEffect(e2,tp)
		local e3=Effect.CreateEffect(c)
		e3:SetType(EFFECT_TYPE_FIELD)
		e3:SetCode(EFFECT_UPDATE_ATTACK)
		e3:SetTargetRange(LOCATION_MZONE,0)
		e3:SetCondition(ref.atkcon)
		e3:SetTarget(function(e,c) return Hollohom.Is(c) end)
		e3:SetValue(function(e,c) return c:GetDefense() end)
		Duel.RegisterEffect(e3,tp)
	end
end
function ref.atkcon(e)
	local tp=e:GetHandlerPlayer()
	return Duel.IsExistingMatchingCard(ref.atkcfilter,tp,LOCATION_MZONE,0,1,nil) and not Duel.IsExistingMatchingCard(ref.fieldfilter,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil)
end
function ref.atkcfilter(c) return c:IsFaceup() and not c:IsType(TYPE_EFFECT) end
function ref.fieldfilter(c) return c:IsType(TYPE_FIELD) and c:IsFaceup() end

--Search
function ref.thfilter(c) return Hollohom.Is(c) and c:IsAbleToHand() and not c:IsCode(id) end
function ref.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(ref.thfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function ref.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,ref.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 and Duel.SendtoHand(g,nil,REASON_EFFECT) then Duel.ConfirmCards(1-tp,g) end
end