Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card is treated as a Normal Monster while face-up on the field. While equipped with a "Noble Arms" Equip Spell, this card becomes an Effect Monster with this effect. ● This card becomes DARK and its Level is increased by 1. Once per turn, if you control no other monsters: You can Special Summon 1 "Noble Knight" monster from your Deck in Defense Position, except "Noble Knight Medraut", and if you do, destroy 1 Equip Spell you control.
--聖騎士モルドレッド
--Noble Knight Medraut
local s,id=GetID()
function s.initial_effect(c)
	--normal monster
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetCode(EFFECT_ADD_TYPE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.eqcon1)
	e1:SetValue(TYPE_NORMAL)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_REMOVE_TYPE)
	e2:SetValue(TYPE_EFFECT)
	c:RegisterEffect(e2)
	--Attribute Dark
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e3:SetCode(EFFECT_CHANGE_ATTRIBUTE)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCondition(s.eqcon2)
	e3:SetValue(ATTRIBUTE_DARK)
	c:RegisterEffect(e3)
	local e4=e3:Clone()
	e4:SetCode(EFFECT_UPDATE_LEVEL)
	e4:SetValue(1)
	c:RegisterEffect(e4)
	--spsummon
	local e5=Effect.CreateEffect(c)
	e5:SetDescription(aux.Stringid(id,0))
	e5:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e5:SetType(EFFECT_TYPE_IGNITION)
	e5:SetRange(LOCATION_MZONE)
	e5:SetCountLimit(1)
	e5:SetCondition(s.spcon)
	e5:SetTarget(s.sptg)
	e5:SetOperation(s.spop)
	c:RegisterEffect(e5)
end
s.listed_series={SET_NOBLE_KNIGHT,SET_NOBLE_ARMS}
function s.eqcon1(e)
	local eg=e:GetHandler():GetEquipGroup()
	return not eg or not eg:IsExists(Card.IsSetCard,1,nil,SET_NOBLE_ARMS)
end
function s.eqcon2(e)
	local eg=e:GetHandler():GetEquipGroup()
	return eg and eg:IsExists(Card.IsSetCard,1,nil,SET_NOBLE_ARMS)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return s.eqcon2(e) and Duel.GetFieldGroupCount(tp,LOCATION_MZONE,0)==1
end
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_NOBLE_KNIGHT) and c:GetCode()~=id and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_DECK,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_DECK)
end
function s.desfilter(c)
	return c:IsFaceup() and c:IsType(TYPE_EQUIP)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_DECK,0,1,1,nil,e,tp)
	if #g>0 and Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP_DEFENSE)~=0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
		local dg=Duel.SelectMatchingCard(tp,s.desfilter,tp,LOCATION_SZONE,0,1,1,nil)
		Duel.Destroy(dg,REASON_EFFECT)
	end
end