Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If a monster(s) your opponent controls is destroyed by battle or sent to the GY: You can target 1 Xyz Monster you control; attach 1 monster from your opponent's GY to that monster as material. You can banish this card from your GY, then target 1 monster on the field Special Summoned from the Extra Deck; change its battle position.
--エクシーズ弁当
--Xyz Bento
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Attach 1 monster from your opponent's GY to your Xyz monster 
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_LEAVE_GRAVE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e1:SetCode(EVENT_BATTLE_DESTROYED)
	e1:SetCondition(s.attcon)
	e1:SetTarget(s.atttg)
	e1:SetOperation(s.attop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_TO_GRAVE)
	c:RegisterEffect(e2)
	--Change battle position of 1 monster Special Summoned from the Extra Deck 
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_POSITION)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_GRAVE)
	e3:SetCost(Cost.SelfBanish)
	e3:SetTarget(s.postg)
	e3:SetOperation(s.posop)
	c:RegisterEffect(e3)
end
function s.attconfilter(c,tp)
	return c:IsPreviousControler(1-tp) and c:IsPreviousLocation(LOCATION_MZONE)
end
function s.attcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.attconfilter,1,nil,tp)
end
function s.atttg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_MZONE) and chkc:IsFaceup() and chkc:IsType(TYPE_XYZ) end
	if chk==0 then return Duel.IsExistingTarget(aux.FaceupFilter(Card.IsType,TYPE_XYZ),tp,LOCATION_MZONE,0,1,nil)
		and Duel.IsExistingMatchingCard(aux.AND(Card.IsMonster,Card.IsAbleToChangeControler),tp,0,LOCATION_GRAVE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,aux.FaceupFilter(Card.IsType,TYPE_XYZ),tp,LOCATION_MZONE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_LEAVE_GRAVE,nil,1,1-tp,0)
end
function s.attop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) or not tc:IsType(TYPE_XYZ) or tc:IsImmuneToEffect(e) then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_XMATERIAL)
	local g=Duel.SelectMatchingCard(tp,aux.AND(Card.IsMonster,Card.IsAbleToChangeControler),tp,0,LOCATION_GRAVE,1,1,nil)
	if #g>0 then
		Duel.Overlay(tc,g)
	end
end
function s.posfilter(c)
	return c:IsCanChangePosition() and c:IsSummonLocation(LOCATION_EXTRA)
end
function s.postg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.posfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.posfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
	local g=Duel.SelectTarget(tp,s.posfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,1,0,0)
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.ChangePosition(tc,POS_FACEUP_DEFENSE,POS_FACEDOWN_DEFENSE,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK)
	end
end