looks and sounds good.as you say, every time you get close to the doors, the elevator triggers and the ding goes off. It might be nice to have some way to tell that the elevator is on the way. It is difficult to tell if you have triggered the elevator call. It is not necessary but would be nice.
yeah, that can be a pain, btw the bell only goes off if the elevator is on the same floor, i agree i need to add something to let the user know the elevator is on its way.