Example 8 using abs
===================

Simulation
-----------

.. image:: ../tutorial/code8.gif
    :alt: not found
    :align: center

Real Life
---------

.. image:: ../tutorial/code8real.gif
    :alt: not found
    :align: center

What does the code do?
----------------------
In this code the robot moves forward until abs < distance, then drives back to original position.

Functions Used
--------------
cmpc( clear_motor_position_counter)

abs( absolute )

gmpc( get_motor_position_counter)

mav( motor port, velocity)

msleep( distance in ms)

Function Implementation
***********************

.. code-block:: python
   :linenos:

   #!/usr/bin/python3
   import os, sys
   sys.path.append("/usr/lib")
   from kipr import*

   def drive(distance, speed):
          cmpc(0)
          while abs(gmpc(0)) < distance:
              mav(0, speed)
              mav(3, speed)
          mav(0, 0)
          mav(3, 0)
          msleep(20)

   def main():
          drive(1000, 500)
          drive(1000, -300)

   if __name__ == "__main__":
      main()

Rookie Tips
-----------
You can make multiple define(func) in a code inorder to make your code more organised!