Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
While you control a "Gladiator Beast" monster, all monsters your opponent controls must attack, if able. Once per turn: You can shuffle 1 "Gladiator Beast" monster from your hand or GY into the Main Deck, then target 1 "Gladiator Beast" monster you control; it gains ATK equal to its original DEF until the end of this turn (even if this card leaves the field). If this card in the Spell & Trap Zone is destroyed by card effect: You can activate this effect; this turn, "Gladiator Beast" monsters you control cannot be destroyed by battle.
--剣闘海戦
--Gladiator Naumachia
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Force attack
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_MUST_ATTACK)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(0,LOCATION_MZONE)
	e2:SetCondition(s.mustatkcon)
	c:RegisterEffect(e2)
	--Increase ATK
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_ATKCHANGE)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_SZONE)
	e3:SetHintTiming(TIMING_DAMAGE_STEP)
	e3:SetCountLimit(1)
	e3:SetCondition(aux.StatChangeDamageStepCondition)
	e3:SetCost(s.atkcost)
	e3:SetTarget(s.atktg)
	e3:SetOperation(s.atkop)
	c:RegisterEffect(e3)
	--Prevent battle destruction
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e4:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e4:SetCode(EVENT_DESTROYED)
	e4:SetCondition(s.immcon)
	e4:SetOperation(s.immop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_GLADIATOR}
function s.mustatkcon(e)
	return Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsSetCard,SET_GLADIATOR),e:GetHandlerPlayer(),LOCATION_MZONE,0,1,nil)
end
function s.atkcfilter(c)
	return c:IsSetCard(SET_GLADIATOR) and c:IsMonster() and c:IsAbleToDeckAsCost()
end
function s.atkcost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(s.atkcfilter,tp,LOCATION_HAND|LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectMatchingCard(tp,s.atkcfilter,tp,LOCATION_HAND|LOCATION_GRAVE,0,1,1,nil)
	Duel.SendtoDeck(g,nil,SEQ_DECKSHUFFLE,REASON_EFFECT)
end
function s.atkfilter(c)
	return c:IsFaceup() and c:HasNonZeroDefense() and c:IsSetCard(SET_GLADIATOR)
end
function s.atktg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.atkfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.atkfilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.atkfilter,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if c:IsRelateToEffect(e) and tc and tc:IsRelateToEffect(e) and tc:IsFaceup() then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
		e1:SetRange(LOCATION_MZONE)
		e1:SetValue(tc:GetBaseDefense())
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
	end
end
function s.immcon(e,tp,eg,ep,ev,re,r,rp)
	return (r&REASON_EFFECT)==REASON_EFFECT and e:GetHandler():IsPreviousLocation(LOCATION_SZONE)
end
function s.immop(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetDescription(aux.Stringid(id,2))
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e1:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE+EFFECT_FLAG_CLIENT_HINT)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,SET_GLADIATOR))
	e1:SetReset(RESET_PHASE|PHASE_END)
	e1:SetValue(1)
	Duel.RegisterEffect(e1,tp)
end