Coyote and RoadRunner

coyote.py

import turtle
from random import random

#Function to make a coyote (a custom turtle)
def make_coyote():
  coyote = turtle.Turtle()
  coyote.speed( 10 )
  coyote.color( 80, 80, 80 )
  return coyote

#Function to make a roadrunner (a custom turtle)
def make_roadrunner():
  roadrunner = turtle.Turtle()
  roadrunner.speed( 10 )
  roadrunner.color( 128, 128, 255 )
  return roadrunner

# Setup coyote
wiley = make_coyote()
# Turn a random degree
wiley.setheading( random() * 360 )
# Go forward 150 + a number between 1-100)
wiley.forward( 50 + (random() * 100) )
  
# Setup road runner
speedy = make_roadrunner()
# Turn a random degree
speedy.setheading( random() * 360 )
# Go forward 100
speedy.forward( 100 )

avg = 0
for i in range(50):
  # turn towards speedy, then run full speed
  wiley.setheading( wiley.towards( speedy ) )
  wiley.forward( 20 )

  # if wiley is close turn and run in a random direction
  dist = speedy.distance( wiley )
  
  avg = avg + dist
  #If Wiley is getting too close, turn and run
  if dist < 50:
    speedy.setheading( random() * 360 )
    speedy.forward( 20 )
    
  # Display how warm Wiley is getting
  if dist > 30:
    # Far away
    wiley.dot(10, "green")
  else:
    if dist < 30 and dist > 20:
      # getting close
      wiley.dot(10, "yellow")
    else:
      # dangerously close
      wiley.dot(10, "red")
      
  if dist == 0:
    print "Caught you!"
    wiley.dot(50, "red")
    #stop the chase
    break
      
avg = avg / 20
print avg