Jamie's Blog » python http://www.angelforge.org/wordpress My life is words. Sat, 28 Jan 2012 04:35:09 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Tron Bot http://www.angelforge.org/wordpress/programming/tron-bot/ http://www.angelforge.org/wordpress/programming/tron-bot/#comments Sat, 13 Feb 2010 01:31:35 +0000 Jamie http://www.angelforge.org/wordpress/?p=2277 I spent a few hours cooking up an entry for this Tron Bot AI Competition. The starter packages they provided made it really easy to enter. I created an entry in python. The competition page is: http://csclub.uwaterloo.ca/contest/

The strategy for my bot:

  1. I tried to implement painter’s flood fill per Wikipedia. This worked okay and I got to around ~300.
  2. Then I implemented A*. The strategy was to get within 5 squares of the enemy, and then flood fill. My reasoning was that if I had a better fill algorithm, I would win at that point.
  3. Next, I tried to implement minimax with alpha-beta pruning. It’s not tested, but it should be fairly close. All I am missing is a utility function (well, that is probably the most impt piece!). For the utility function, I wanted to bisect the playing field by finding the perpendicular bisector between the players, then flood-filling to determine the number of blank spaces in each player’s respective region. I have the bisection algorithm done, but got bored once I started implementing the flood fill.

The project page is, it contains the source as well: http://code.google.com/p/tron-bot-waterloo/

Bot runs:

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