Lookup the concept of turtles: Netlogo http://ccl.northwestern.edu/netlogo/docs/dictionary.html http://ccl.northwestern.edu/netlogo/docs/dictionary.html and Pyt

Lookup the concept of turtles: Netlogo http://ccl.northwestern.edu/netlogo/docs/dictionary.html http://ccl.northwestern.edu/netlogo/docs/dictionary.html and Python https://docs.python.org/2/library/turtle.html https://docs.python.org/2/library/turtle.html