Create Your Own Computer Game

Things to Try

Week 4

1. Experiment with announce and question. Here are the examples:
   

   to over
   announce [Game over!]
   end
   
   to reply
   question [Are you ready? (please answer yes or no)]
   if answer = "yes [announce [OK] stop]
   if answer = "no [announce [sorry] stop]
   announce [oh]
   end

2. Experiment with timers. For exampe, suppose you want one character (Mildred) to have a timer:
     Mildred, GiveTurtle "time-left
   will give Mildred a timer called time-left. Put
     Mildred, settime-left 100
   into your startup procedure so that the time is initially set to the right number. (I picked 100; you pick whatever you want.)
   
   
3. Here are some sample turtle graphics procedures for you to try. Remember that you can clear your graphics with cg.
   

   to small-square
   repeat 4 [fd 50 rt 90]
   end
   
   to big-square
   repeat 4 [fd 120 rt 90]
   end
   
   to design
   repeat 12 [big-square rt 30]
   end
   
   to square :size
   repeat 4 [fd :size rt 90]
   end
   
   to squiral :size
   fd :size
   rt 90
   squiral :size + 2
   end
   
   to polyspiral :size :angle
   fd :size
   rt :angle
   polyspiral :size + 2 :angle
   end