DroidPoet

 package pez.femto;
 import robocode.*;
 
 // DroidPoet - Blind and strong - http://robowiki.net?Poet#DroidPoet
 // By Peter Strömberg, http://robowiki.net/?PEZ
 
 public class DroidPoet extends Robot implements Droid {
     public void run() {
         while (true) {
             ahead(1000);
             fire(getEnergy() > 3 ? 3 : 0);
         }
     }
 
     public void onHitWall(HitWallEvent e) {
         turnRight(90 - getHeading() % 90); 
         turnGunRight(Math.toDegrees(Math.atan2(getBattleFieldWidth() / 2 - getX(), getBattleFieldHeight() / 2 - getY())) -
                 getGunHeading());
     }
 } 
 

One of the Poetss, and a Droid. In fact: A Haiku, Perceptual, ExtendsRobot, Droid bot. Follows walls and shoots against the center of the battle field.

Download: http://www.robocoderepository.com/BotDetail.jsp?id=1748

Here's the source for version 2.0

package pez.femto;
import robocode.*;

// DroidPoet - Blind and strong - http://robowiki.net?Poet#DroidPoet
// By Peter Strömberg, http://robowiki.net/?PEZ

public class DroidPoet extends Robot implements Droid {
    public void run() {
        while (true) {
            ahead(1000);
            fire(getEnergy() > 3 ? 3 : 0);
        }
    }

    public void onHitWall(HitWallEvent e) {
        turnRight(90 - getHeading() % 90); 
        turnGunRight(Math.toDegrees(Math.atan2(getBattleFieldWidth() / 2 - getX(), getBattleFieldHeight() / 2 - getY())) -
                getGunHeading());
    }
} 

And any old versions goes here: /OldVersions