Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn: You can pay 500 LP; during your Main Phase this turn, you can Normal Summon 1 "Vampire" monster in addition to your Normal Summon/Set. (Even if this card leaves the field. You can only gain this effect once per turn.) Each time your "Vampire" monster inflicts battle damage to your opponent: Gain the same amount of LP.
--ヴァンパイアの領域
--Vampire's Domain
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)
	--extra summon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1)
	e2:SetCondition(s.sumcon)
	e2:SetCost(Cost.PayLP(500))
	e2:SetTarget(s.sumtg)
	e2:SetOperation(s.sumop)
	c:RegisterEffect(e2)
	--recover
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_RECOVER)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCode(EVENT_BATTLE_DAMAGE)
	e3:SetCondition(s.reccon)
	e3:SetTarget(s.rectg)
	e3:SetOperation(s.recop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_VAMPIRE}
function s.sumcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsPlayerCanAdditionalSummon(tp)
end
function s.sumtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanSummon(tp) end
end
function s.sumop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetDescription(aux.Stringid(id,2))
	e1:SetCode(EFFECT_EXTRA_SUMMON_COUNT)
	e1:SetTargetRange(LOCATION_HAND|LOCATION_MZONE,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,SET_VAMPIRE))
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
end
function s.reccon(e,tp,eg,ep,ev,re,r,rp)
	return ep~=tp and eg:GetFirst():IsControler(tp) and eg:GetFirst():IsSetCard(SET_VAMPIRE)
end
function s.rectg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(ev)
	Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,ev)
end
function s.recop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Recover(p,d,REASON_EFFECT)
end