ePhysics

This page is a reference for commands which are specific to RUR-PLE — that is, commands which you use in RUR-PLE, but cannot be found in the textbook we are using.

Actions

• move()
  • Makes Reeborg move forward one space
• turn_left()
  • Makes Reeborg turn to his left
• pick_beeper()
  • Makes Reeborg pick up a beeper
    (crashes if he is not standing on a beeper)
• put_beeper()
  • Makes Reeborg put down a beeper
    (crashes if he is not carrying any beepers)
• turn_off()
  • Makes Reeborg turn off, ending the program

True/false tests

• front_is_clear()
  • true if there is no wall in front of Reeborg
  • false otherwise
• left_is_clear()
  • true if there is no wall on Reeborg’s left side
  • false otherwise
• right_is_clear()
  • true if there is no wall on Reeborg’s right side
  • false otherwise
• carries_beepers()
  • true if Reeborg is carrying any beepers
  • false otherwise
• on_beeper()
  • true if Reeborg is standing on a beeper
  • false otherwise

Getting information

• get_avenue()
  • Returns the number of the avenue Reeborg is on
• get_street()
  • Returns the number of the street Reeborg is on
• get_position()
  • Returns a list like this:
    (avenue, street), where “avenue” is the number of the avenue Reeborg is on, and “street” is the number of the street Reeborg is on
• get_direction()
  • Returns “n”, “e”, “s”, or “w” if Reeborg is facing north, east, south, or west (respectively)

Note:  The commands under Getting Information are only available in this unofficial release of RUR-PLE (if you were to download the latest release from the official RUR-PLE website, you wouldn’t be able to use these commands).