You can read a blog post about this and see a demo here: http://juliangamble.com/blog/2011/12/28/clojure-gui-demo-of-ants/

This is Rich Hickey's ant colony simulation, and includes an update for running as an Applet.

Feedback welcome.

How to build and run, as a jar file

lein uberjar 	# build
java -jar ./target/ants-0.1-standalone.jar	# run

How to run, as a clojure app

lein run 		# run

The story (the requirement)

• Ant colony simulation
• World populated with food and ants
• Ants find food, bring home, drop pheromones
• Sense pheromones, food, home
• Ants act independently, on multiple real threads
• Model pheromone evaporation
• Animated GUI
• < 250 lines of Clojure

The UI

call-stack diagram

call-stack-ants.svg