keep the cat from entering your lap when you hear her meow from behind you, click the can to open it. if you don't, she will enter your lap. don't open it until you hear her meow. if you do, she'll be irritated that it's not fresh, and enter your lap. after feeding her, you need to click the empty spot to stage another can.
this is a...proof of concept for a game i intend to make in my object oriented programming class