ROBO Exercise Set 1
Arvid Halma from robomind.net
June 8, 2011

1. Exercise 1: Moving the beacon:
   

   Open default.map

   Use the remote control (Run > Remote Control) to move the beacon located south east of the robot to the south west corner.

   

   Part 2 - write the script yourself. Type the commands yourself and run the script.
   The Remote control version will have more lines:

   	1 ...
   	2 forward(1)
   	3 forward(1)
   	4 forward(1)
   	5 ...
   

   and your version:

   	1 ...
   	2 forward(3)
   	3 ...
   

2. Exercise 2: Drawing Stairs
   Use the remote control to draw stairs like the one below:
   Stairs with three steps:

   

   Part 2, Use a repeat loop to draw the three steps Let the robot take one step at a time

   	1 # Start to paint
   	2 repeat(3)
   	3 {
   	4 	# Draw a single step
   	5 }
   	6 # Stop painting
   

   Part 3: Use a procedure
   Create a procedure drawStairs() that draws the three steps like the previous exercise.

   procedure drawStairs()
   {
   
       # draw the three stairs here
   
   }
   
   drawStairs
   
   

   Part 5: Make this procedure work for any number of stairs

   procedure drawStairs(numberOfStairs)
   {
           repeat(numberOfStairs)
          {
   	
   	#  draw each stair
   	
           }
   }
   

   Hint:

   	1 drawStairs(2)
   	2
   	3 procedure drawStairs(number)
   	4 {
   	5 	# draw stairs with ‘number’ steps.
   	6 }
   

   This draws stairs with two steps.
   By changing line 1 to drawStairs(5) it makes the robot draw five steps.

3. Exercise 3: Follow the white marks
   Open the map goRightAtWhite1.map
   Follow the white painting marks.

   Map 1:

   

   
   Here are the steps:

   • Move forward until you see one right in front of you.
   • Then turn right at the spot.
   • Move forward until you find another white spot.
   • Turn right at this spot.
   • Keep doing this until you hit a beacon.

   Write one script that works with all the maps:
   goRightAtWhite1.map, goRightAtWhite2.map, goRightatWhite3.map

   Map 1:

   

   Map 2:

   

   Map 3:

   

4. Exercise 4: Draw a spiral
   Part 1
   First version Write a script that draws a spiral until you can’t go any further because there is an obstacle in front of you.

   

   Hint:

   paintWhite
   repeat {
       repeatWhile(rightIsWhite) {
           if( ???) {
               forward(1)
           }
           else {
               end
           }
       }
       right
       forward(1)
   }
   
   

   Part 2:
   Second version
   Use recursion to draw the arms of the spiral.
   Hint: first make a procedure that lets the robot move along one arm of the spiral.