template <hash_type Hash>
constexpr bool checkRegistered()
{
    return false;
}

#define REGISTER_EVENT_TYPE(type)            \
template <>                                  \
constexpr bool checkRegistered<type##_sid>() \
{                                            \
    return true;                             \
}                                            \

REGISTER_EVENT_TYPE("LevelChangedEvent")

template <hash_type EventType>
void queueEvent()
{
    static_assert(checkRegistered<EventType>(), "Can't queue unregistered type");
    ...
}

template <hash_type EventType>
void triggerEvent()
{
    static_assert(checkRegistered<EventType>(), "Can't trigger unregistered type");
    ...
}

// call function like this:
queueEvent<"HpChangedEvent"_sid>();