Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Discard 1 card; roll a six-sided die, then Special Summon, from your hand and/or Deck, 1 or 2 "Speedroid" monsters whose total Levels equal the result, but negate their effects. If you do not Special Summon, you lose LP equal to the result x 500. You can only activate 1 "Speedroid Wheel" per turn.
--SRルーレット
--Speedroid Wheel
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_DICE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.roll_dice=true
s.listed_series={SET_SPEEDROID}
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,c) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST|REASON_DISCARD,c)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_DICE,nil,0,tp,1)
	Duel.SetPossibleOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,2,tp,LOCATION_HAND|LOCATION_DECK)
end
function s.filter(c,e,tp)
	return c:IsSetCard(SET_SPEEDROID) and c:HasLevel() and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local dc=Duel.TossDice(tp,1)
	local flag=false
	if Duel.GetLocationCount(tp,LOCATION_MZONE)>0 then
		local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_HAND|LOCATION_DECK,0,nil,e,tp)
		local ft=math.min(Duel.GetLocationCount(tp,LOCATION_MZONE),2)
		if Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) then ft=1 end
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local sg=g:SelectWithSumEqual(tp,Card.GetLevel,dc,1,ft)
		if #sg>0 then
			for tc in sg:Iter() do
				if Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP) then
					--Negate their effects
					local e1=Effect.CreateEffect(e:GetHandler())
					e1:SetType(EFFECT_TYPE_SINGLE)
					e1:SetCode(EFFECT_DISABLE)
					e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
					e1:SetReset(RESET_EVENT|RESETS_STANDARD)
					tc:RegisterEffect(e1)
					local e2=e1:Clone()
					e2:SetCode(EFFECT_DISABLE_EFFECT)
					tc:RegisterEffect(e2)
					flag=true
				end
			end
			Duel.SpecialSummonComplete()
		end
	end
	if not flag then Duel.SetLP(tp,Duel.GetLP(tp)-dc*500) end
end