This is a fence making algorithm, it may not seem interesting at first, but if you move the cat around, the pattern of the fence may change! If you put the cat in a corner, the fence may not even look like a fence anymore!
You may copy this so you can make your own shapes of fences and own colors of fence! (Just don't mess with the third sprite, it is a mistake I made and I will delete it later. I was trying to make grass inside the fence and it did not work.) You may advertise, but do no spam the link to your games, it angers me and other people. This idea just popped into my head while I was looking at other peoples games, animations, etc.