Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2+ Level 3 monsters While 3 or more Xyz Materials are attached to monsters on the field, "Goblin" monsters you control can attack directly. Once per turn, if a monster(s) is Normal or Special Summoned, while this card is in the Monster Zone (except during the Damage Step): You can target 1 of those monsters; detach 1 material from a monster on either field, and if you do, change the targeted monster's battle position. Once per turn, when an opponent's monster declares an attack: You can detach 1 material from a monster on either field, and if you do, negate that attack.
--百鬼羅刹 グリアーレ三傑
--Goblin Biker Troika Griare
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon Procedure
	Xyz.AddProcedure(c,nil,3,2,nil,nil,Xyz.InfiniteMats)
	--Your "Goblin" monsters can attack directly
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_DIRECT_ATTACK)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,SET_GOBLIN))
	e1:SetCondition(function() return Duel.GetOverlayCount(0,1,1)>=3 end)
	c:RegisterEffect(e1)
	--Change the position of 1 monster that is summoned
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_POSITION)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET,EFFECT_FLAG2_CHECK_SIMULTANEOUS)
	e2:SetCode(EVENT_SUMMON_SUCCESS)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,0,EFFECT_COUNT_CODE_SINGLE)
	e2:SetCondition(s.poscond)
	e2:SetTarget(s.postg)
	e2:SetOperation(s.posop)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e3)
	--Negate the attack of your opponent's monster
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e4:SetCode(EVENT_ATTACK_ANNOUNCE)
	e4:SetRange(LOCATION_MZONE)
	e4:SetCountLimit(1)
	e4:SetCondition(function(_,tp) return Duel.GetAttacker():IsControler(1-tp) end)
	e4:SetTarget(s.negatktg)
	e4:SetOperation(s.negatkop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_GOBLIN}
function s.cfilter(c,e)
	return c:IsCanChangePosition() and c:IsLocation(LOCATION_MZONE) and c:IsCanBeEffectTarget(e)
end
function s.poscond(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,e) and not eg:IsContains(e:GetHandler())
end
function s.postg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return eg:IsContains(chkc) and s.cfilter(chkc,e) end
	if chk==0 then return eg:IsExists(s.cfilter,1,nil,e) and Duel.CheckRemoveOverlayCard(tp,1,1,1,REASON_EFFECT) end
	local tc=nil
	if #eg==1 then
		tc=eg:GetFirst()
		Duel.SetTargetCard(tc)
	else
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
		tc=eg:FilterSelect(tp,s.cfilter,1,1,nil,e)
		Duel.SetTargetCard(tc)
	end
	Duel.SetOperationInfo(0,CATEGORY_POSITION,tc,1,0,0)
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if Duel.RemoveOverlayCard(tp,1,1,1,1,REASON_EFFECT)>0 and tc:IsRelateToEffect(e) then
		Duel.ChangePosition(tc,POS_FACEUP_DEFENSE,POS_FACEDOWN_DEFENSE,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK)
	end
end
function s.negatktg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.CheckRemoveOverlayCard(tp,1,1,1,REASON_EFFECT) end
end
function s.negatkop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.RemoveOverlayCard(tp,1,1,1,1,REASON_EFFECT)>0 then
		Duel.NegateAttack()
	end
end