How can I stop emotional eating?

For the past two weeks I’ve been taking a summer class in a city that has positively nothing to do during the summer. It’s boring and dismal and I’ve found myself growing depressed and I’ve found that the only things that make me feel better are cooking and eating, and I’ve been eating rather compulsively lately. I haven’t been able to exercise much either with long study hours and perpetual bad weather, though I’ve been walking or riding my bike everywhere. Basically, how can I control the urge to eat when I’m not hungry?