Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 4 monsters When your Dinosaur monster destroys an opponent's monster by battle and sends it to the GY: You can detach 1 material from this card; inflict 1000 damage to your opponent, then this card gains 1000 ATK. If this Xyz Summoned card is destroyed: You can target 1 card on the field; destroy it, and if you do, inflict 1000 damage to your opponent. You can only use this effect of "Grenosaurus Giga-Cannon" once per turn.
--魔頭砲グレンザウルス
--Grenosaurus Giga-Cannon
--Scripted by Satella
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon procedure
	Xyz.AddProcedure(c,nil,4,2)
	--Inflict 1000 damage to your opp
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DAMAGE+CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_BATTLE_DESTROYED)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.damcon)
	e1:SetCost(Cost.DetachFromSelf(1,1,nil))
	e1:SetTarget(s.damtg)
	e1:SetOperation(s.damop)
	c:RegisterEffect(e1)
	--Destroy 1 card on the field
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_DESTROY+CATEGORY_DAMAGE)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.descon)
	e2:SetTarget(s.destg)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
end
function s.cfilter(c,tp)
	if not (c:IsPreviousControler(1-tp) and c:IsLocation(LOCATION_GRAVE)) then return false end
	local bc=c:GetReasonCard()
	if bc:IsRelateToBattle() then
		return bc:IsControler(tp) and bc:IsRace(RACE_DINOSAUR)
	else
		return bc:IsPreviousControler(tp) and c:GetPreviousRaceOnField()&RACE_DINOSAUR>0
	end
end
function s.damcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.damtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(1-tp)
	Duel.SetTargetParam(1000)
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,1000)
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	if Duel.Damage(p,d,REASON_EFFECT)>0 then
		local c=e:GetHandler()
		if not (c:IsRelateToEffect(e) and c:IsFaceup()) then return end
		Duel.BreakEffect()
		--Gains 1000 ATK
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_COPY_INHERIT)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(1000)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD_DISABLE)
		c:RegisterEffect(e1)
	end
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsPreviousLocation(LOCATION_MZONE) and c:IsXyzSummoned()
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() end
	if chk==0 then return Duel.IsExistingTarget(nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,tp,0)
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,1000)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.Destroy(tc,REASON_EFFECT)>0 then
		Duel.Damage(1-tp,1000,REASON_EFFECT)
	end
end