CLASS CREATION #6
Tuesday, November 13

Today you will make a few modifications to our clickit.py program, which will make the game a bit more challenging.  I've listed four possibilities below—implement at least two of them in your current version of the game to complete this class creation.  You are welcome to incorporate more than two changes, of course!  You can also suggest a change of your own; just be sure to clear it with Dr. V before you begin coding.

• Enlarge the screen to 600 by 600 pixels, and also double the number of circles on the screen to begin.  The latter is relatively quick to do, but changing the screen size will require you to adjust numbers here and there throughout your program.
  
  
• Make the circles smaller, say only 10 or 15 pixels in radius.  Or for more of a challenge, choose the radius of each circle randomly!
  
  
• Include an option at the start of the game in which the user selects the pace of the circles: either leisurely, moderate, cookin', or lightning.  Set a variable delay accordingly, and modify the pygame.time.delay commands to use this value.
  
  
• After ten seconds, abruptly reverse the directions of all the circles.  You will need to initialize a variable reversed = "no", and then include a statement to check whether a reversal has happened and whether pygame.time.get_ticks() has exceeded 10000 yet.  If so, go through and modify dx and dy for each circle.