Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
At the start of your Main Phase 1, if your opponent controls more monsters than you do and you control a Beast-Warrior-Type "Bujin" monster: Until the end of your opponent's next turn, Spell/Trap Cards, and their effects, cannot be activated.
--鏡鳴する武神
--Bujin Regalia - The Mirror
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)
	e1:SetCondition(s.condition)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
s.listed_series={SET_BUJIN}
function s.cfilter(c)
	return c:IsFaceup() and c:IsSetCard(SET_BUJIN) and c:IsRace(RACE_BEASTWARRIOR)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsPhase(PHASE_MAIN1) and not Duel.CheckPhaseActivity()
		and Duel.GetFieldGroupCount(tp,LOCATION_MZONE,0)<Duel.GetFieldGroupCount(tp,0,LOCATION_MZONE)
		and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE,0,1,nil)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e1:SetDescription(aux.Stringid(id,1))
	e1:SetCode(EFFECT_CANNOT_ACTIVATE)
	e1:SetTargetRange(1,1)
	e1:SetValue(s.aclimit)
	e1:SetReset(RESET_PHASE|PHASE_END,2)
	Duel.RegisterEffect(e1,tp)
end
function s.aclimit(e,re,tp)
	return re:IsSpellTrapEffect()
end