When a key is pressed that is not 'q' or an arrow key, the game crashes

[Josh Brown]

When a key is pressed that is not 'q' or an arrow key, the game ends with the following error message:

Traceback (most recent call last):
  File "./snakes", line 135, in <module>
    curses.wrapper(main)
  File "/usr/lib/python2.6/curses/wrapper.py", line 44, in wrapper
    return func(stdscr, *args, **kwds)
  File "./snakes", line 127, in main
    else: snake.update(None)
  File "./snakes", line 70, in update
    self.body[0].update(direction)
  File "./snakes", line 58, in update
    if type(direction[0]) is int and type(direction[1]) is int:
TypeError: 'NoneType' object is unsubscriptable

[Josh Brown (joshbrown)]

This is not only a high-priority bug in itself, but will also prevent the implementation of perpetual motion (bug #628215).

[Josh Brown (joshbrown)]

 This bug is easy to fix by adding just one line of code.

[Josh Brown (joshbrown)]

Fixed in trunk, revision 19: http://bazaar.launchpad.net/~snakes-game/snakes-game/trunk/revision/19