#!/usr/bin/env python

class Location(object):
    """Track and update a location on a 2-D grid.

    Assume origin (0, 0) is located in the center of the grid.  Moving
    right increases the x value and moving up increases the y value.
    """

    def __init__(self):
        # Set starting location to the origin.
        self.x = 0
        self.y = 0

    def move_up(self):
        self.y += 1

    def move_down(self):
        raise Exception("TODO.")

    def move_left(self):
        raise Exception("TODO.")

    def move_right(self):
        raise Exception("TODO.")

    def jump_to(self, x, y):
        raise Exception("TODO.")

    def get_x_location(self):
        return self.x

    def get_y_location(self):
        raise Exception("TODO.")


if __name__ == '__main__':
    loc = Location()
    loc.move_up()
    loc.move_up()
    loc.move_left()
    loc.move_left()
    loc.move_down()
    loc.move_right()
    loc.jump_to(1, 1)
    loc.move_up()
    loc.move_right()
    loc.move_down()
    loc.move_down()
    loc.move_down()
    loc.move_right()
    print "Final position is: ", loc.get_x_location(), loc.get_y_location()