Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If your LP are lower than your opponent's: You can Special Summon this card from your hand. During the Main Phase (Quick Effect): You can Fusion Summon 1 "Gold Pride" Fusion Monster from your Extra Deck, using monsters from your hand or field as material. You can only use each effect of "Gold Pride - Roller Baller" once per turn.
--ＧＰ－ＲＢ
--Gold Pride - Roller Baller
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon itself from the hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id)
	e1:SetCondition(function(_,tp) return Duel.GetLP(tp)<Duel.GetLP(1-tp) end)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--Fusion Summon 1 "Gold Pride" Fusion Monster
	local params={function(c) return c:IsSetCard(SET_GOLD_PRIDE) end}
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_FUSION_SUMMON)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_MZONE)
	e2:SetHintTiming(0,TIMING_MAIN_END)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(function() return Duel.IsMainPhase() end)
	e2:SetTarget(Fusion.SummonEffTG(table.unpack(params)))
	e2:SetOperation(Fusion.SummonEffOP(table.unpack(params)))
	c:RegisterEffect(e2)
end
s.listed_series={SET_GOLD_PRIDE}
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,tp,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
	end
end