Moat Fix

Hello Everyone, after a very long break from Minecraft I have finally gotten back into building things again. Now after a few people were talking to me the other day about castles and Moats i thought of a few problems with a Moat. And the major one being that you need a Bridge to get you in and out of the castle over the moat, there is a problem with this as mobs can then get into your castle over your bridge so i have designed a castle entrance that stops mobs from entering your castle at night time, but is open during the day to allow you to go in and out of your castle whenever. this is an auto function that happens by itself so you don't need to press buttons and leavers.
I hope this fixes your problems with your Moats.
Rex

Additional Notes

This is just what you need to build, it is not a full built castle with a moat, just a demonstration of a castle entrance. For you to see how it works and how easy it is to make.