Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Normal Summoned/Set. Must be Special Summoned by its own effect, and cannot be Special Summoned by other ways. If a "Malefic" monster you control, except "Malefic Truth Dragon", is destroyed by battle or by card effect: You can pay half your Life Points; Special Summon this card from your hand or Graveyard. There can only be 1 "Malefic" monster on the field. If there is no face-up Field Spell Card on the field, destroy this card. If this card destroys an opponent's monster by battle: Destroy all face-up monsters your opponent controls.
--Sin トゥルース・ドラゴン
--Malefic Truth Dragon
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--There can only be 1 "Malefic" monster on the field
	c:SetUniqueOnField(1,1,aux.MaleficUniqueFilter(c),LOCATION_MZONE)
	--Special Summon condition
	local e0=Effect.CreateEffect(c)
	e0:SetType(EFFECT_TYPE_SINGLE)
	e0:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e0:SetCode(EFFECT_SPSUMMON_CONDITION)
	e0:SetValue(aux.FALSE)
	c:RegisterEffect(e0)
	--Special Summon itself from the hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DELAY)
	e1:SetCode(EVENT_DESTROYED)
	e1:SetRange(LOCATION_HAND|LOCATION_GRAVE)
	e1:SetCondition(s.spcon)
	e1:SetCost(s.spcost)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--Destroy itself if no Field Spell is face-up
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_SELF_DESTROY)
	e2:SetCondition(s.descon)
	c:RegisterEffect(e2)
	--Destroy all face-up monsters your opponent controls
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetCode(EVENT_BATTLE_DESTROYING)
	e3:SetCondition(aux.bdocon)
	e3:SetTarget(s.destg)
	e3:SetOperation(s.desop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_MALEFIC}
function s.cfilter(c,tp)
	return c:IsPreviousControler(tp) and c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousPosition(POS_FACEUP)
		and c:IsPreviousSetCard(SET_MALEFIC) and c:GetPreviousCodeOnField()~=id and not c:IsReason(REASON_RULE)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.PayLPCost(tp,math.floor(Duel.GetLP(tp)/2))
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and e:GetHandler():IsCanBeSpecialSummoned(e,0,tp,true,true) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,e:GetHandler(),1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	if Duel.SpecialSummon(c,0,tp,tp,true,true,POS_FACEUP)~=0 then
		c:CompleteProcedure()
	end
end
function s.descon(e)
	return not Duel.IsExistingMatchingCard(Card.IsFaceup,0,LOCATION_FZONE,LOCATION_FZONE,1,nil)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	Duel.Destroy(g,REASON_EFFECT)
end