Page 2: Your First RUR-PLE Program: Basic Movements

2. Your First RUR-PLE Program: Basic Movements

The RUR-PLE robot is controlled by several basic commands. You can combine these commands to create complex actions.

2.1. Basic RUR Robot Commands

• move(): Moves the robot one step forward in its current direction.
• turn_left(): Rotates the robot 90 degrees to the left.
• turn_right(): Can be implemented by calling turn_left() three times. (RUR-PLE may not have a built-in turn_right(); implement it yourself or use three turn_left() calls.)
• take(): Picks up one beeper from the square the robot is on.
• put(): Places one beeper on the square the robot is on.
• front_is_clear(): Returns True if there is no wall in front of the robot, False otherwise.
• on_beeper(): Returns True if the robot is on a beeper, False otherwise.

2.2. Simple Example: Moving a Beeper

The following code is an example that moves the robot, picks up a beeper, turns right, moves again, and then places the beeper.

# beeper_mover.py
# Function to turn the RUR robot right
def turn_right():
    turn_left()
    turn_left()
    turn_left()

move()        # Move forward one step
take()        # Pick up a beeper
turn_right()  # Turn right
move()        # Move forward one step
put()         # Put down a beeper

Before running this code, you should configure a world with a beeper in front of the robot using RUR-PLE's 'World Editor'. Save the world configuration and then run your code.