Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When a Spell/Trap Card is activated that targets 1 Spell/Trap on the field (and no other cards) and would destroy it: Negate the activation, and if you do, destroy that card.
--王家の呪い
--Curse of Royal
local s,id=GetID()
function s.initial_effect(c)
	--Negate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_NEGATE+CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_CHAINING)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.cfilter(c)
	return c:IsOnField() and c:IsSpellTrap()
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	if not re:IsHasProperty(EFFECT_FLAG_CARD_TARGET) or not re:IsHasType(EFFECT_TYPE_ACTIVATE) or not Duel.IsChainNegatable(ev) then return false end
	local g=Duel.GetChainInfo(ev,CHAININFO_TARGET_CARDS)
	if not g or #g~=1 then return false end
	local ex,tg,tc=Duel.GetOperationInfo(ev,CATEGORY_DESTROY)
	return ex and tg~=nil and tc==1 and tg:FilterCount(s.cfilter,nil)==#tg
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,0,0)
	if re:GetHandler():IsDestructable() and re:GetHandler():IsRelateToEffect(re) then
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,1,0,0)
	end
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if Duel.NegateActivation(ev) and re:GetHandler():IsRelateToEffect(re) then
		Duel.Destroy(eg,REASON_EFFECT)
	end
end