Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Activate only during a turn in which you destroyed a Defense Position monster your opponent controlled. Select 1 Level 8 monster you control. During this turn, the selected monster can attack twice.
--破壊神の系譜
--Lineage of Destruction
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	aux.GlobalCheck(s,function()
		local ge1=Effect.CreateEffect(c)
		ge1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		ge1:SetCode(EVENT_DESTROYED)
		ge1:SetOperation(s.checkop)
		Duel.RegisterEffect(ge1,0)
	end)
end
function s.checkop(e,tp,eg,ep,ev,re,r,rp)
	local tc=eg:GetFirst()
	local p1=false
	local p2=false
	for tc in aux.Next(eg) do
		if tc:IsPreviousLocation(LOCATION_MZONE) and tc:IsPreviousPosition(POS_DEFENSE) then
			if tc:GetReasonPlayer()==0 and tc:IsPreviousControler(1) then p1=true end
			if tc:GetReasonPlayer()==1 and tc:IsPreviousControler(0) then p2=true end
		end
	end
	if p1 then Duel.RegisterFlagEffect(0,id,RESET_PHASE|PHASE_END,0,1) end
	if p2 then Duel.RegisterFlagEffect(1,id,RESET_PHASE|PHASE_END,0,1) end
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetFlagEffect(tp,id)~=0 and Duel.IsTurnPlayer(tp)
		and (Duel.IsAbleToEnterBP() or Duel.IsBattlePhase())
end
function s.filter(c)
	return c:IsFaceup() and c:IsLevelAbove(8) and c:GetEffectCount(EFFECT_EXTRA_ATTACK)==0
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_EXTRA_ATTACK)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetValue(1)
		tc:RegisterEffect(e1)
	end
end