Difference between revisions of "Yatagan/Source"

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(1.0.3 - better random movement, and enough codesize for setAdjustGunForRobotTurn !)
(Restructuring.)
Line 1: Line 1:
 
+
== Development Version ==
== Version 1.0.3 ==
 
 
 
 
<syntaxhighlight>
 
<syntaxhighlight>
 
/*
 
/*
Line 235: Line 233:
 
}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>
== Version 1.0.2 ==
+
 
 +
== Latest Released Version (1.0.3) ==
  
 
<syntaxhighlight>
 
<syntaxhighlight>
 
/*
 
/*
Yatagan 1.0.2 by Sheldor & Skilgannon
+
Yatagan 1.0.3 by Sheldor & Skilgannon
 
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
 
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
 
   
 
   
Line 266: Line 265:
 
   public void run()
 
   public void run()
 
   {
 
   {
       //setAdjustGunForRobotTurn(true);
+
       setAdjustGunForRobotTurn(true);
 
    
 
    
 
   //Start spinning radar and initialize direction to infinity.
 
   //Start spinning radar and initialize direction to infinity.
Line 280: Line 279:
 
       int matchPosition;
 
       int matchPosition;
 
    
 
    
   //Oscillating/Random movement.
+
   //Orbiting/Oscillating/Random movement, all depending on how big the number you multiply the random with is.
       if( (char) ((enemyEnergy - 1.09999  - (enemyEnergy = e.getEnergy()))) <= 1)
+
       if( (char) ((enemyEnergy - 1.09999999999
 +
      + chancesOfReversing.charAt(deathCount)*Math.random()
 +
      - (enemyEnergy = e.getEnergy()))) <= 1 )
 
       {
 
       {
         direction *= (chancesOfReversing.charAt(deathCount) - 2*Math.random());
+
         onHitWall(null);
 
       }
 
       }
 
       setAhead(direction);
 
       setAhead(direction);
Line 298: Line 299:
 
       integer = (int)(distance);
 
       integer = (int)(distance);
 
   // calculate aim offset
 
   // calculate aim offset
     
 
      do {
 
        absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) /  distance;
 
      } while ((integer -= 12) > 0);
 
 
 
  //Aim at the predicted target.
 
      setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
 
 
 
  //Fire!
 
      setFire(2.6666666666666);
 
 
    
 
    
  //Infinite radar lock.
 
      setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
 
  }
 
 
  public void onDeath(DeathEvent e)
 
  {
 
      deathCount++;
 
  }
 
 
  public void onHitWall(HitWallEvent e)
 
  {
 
  //Reverse direction when the bot hits a wall.
 
      direction = -direction;
 
  }
 
 
//chance out of 3 for given number of deaths, 'final' saves a few bytes
 
  private static final String chancesOfReversing = ""
 
  + (char) 2 + (char) 0 + (char) 2 + (char) 0
 
  + (char) 2 + (char) 0 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1;
 
 
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
 
  static String enemyHistory = ""
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 2
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char)-2 + (char)-4 + (char)-6
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-7 + (char)-6 + (char)-5 + (char)-4
 
  + (char)-3 + (char)-2 + (char)-1 + (char)1
 
  + (char) 2 + (char) 4 + (char) 6 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 7 + (char) 6 + (char) 5 + (char) 4
 
  + (char) 3 + (char) 2 + (char) 1 + (char) 1;
 
}
 
 
</syntaxhighlight>
 
 
== Version 1.0.1 ==
 
 
<syntaxhighlight>
 
 
/*
 
Yatagan 1.0.1 by Sheldor & Skilgannon
 
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
 
 
Credits:
 
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
 
and a general thanks to all open source bot authors and contributors to the RoboWiki.
 
 
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
 
see license here: http://robowiki.net/wiki/RWPCL
 
*/
 
 
package sheldor.jk;
 
 
import robocode.*;
 
import robocode.util.Utils;
 
 
public class Yatagan extends AdvancedRobot
 
{
 
//Global variables.
 
  static double direction;
 
  static double enemyEnergy;
 
 
  static int deathCount;
 
 
//En garde!
 
  public void run()
 
  {
 
      //setAdjustGunForRobotTurn(true);
 
 
 
  //Start spinning radar and initialize direction to infinity.
 
      setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
 
  }
 
 
  public void onScannedRobot(ScannedRobotEvent e)
 
  {
 
  //Local variables.
 
      int integer = 30;
 
      double absoluteBearing;
 
      double distance;
 
      int matchPosition;
 
 
 
  //Oscillating/Random movement.
 
      if( (char) ((enemyEnergy - 1  - (enemyEnergy = e.getEnergy()))) <= 1)
 
      {
 
        direction *= (chancesOfReversing.charAt(deathCount) - 2*Math.random());
 
      }
 
      setAhead(direction);
 
 
 
  //Stay perpendicular to the enemy.
 
      setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
 
 
 
  //Pattern Matching.
 
      enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
 
 
 
  // search for a match
 
      while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
 
 
 
      integer = (int)(distance);
 
  // calculate aim offset
 
     
 
 
       do {  
 
       do {  
 
         absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) /  distance;
 
         absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) /  distance;
       } while ((integer -= 12) > 0);
+
       } while ((integer -= 13) > 0);
 
    
 
    
 
   //Aim at the predicted target.
 
   //Aim at the predicted target.
Line 554: Line 308:
 
    
 
    
 
   //Fire!
 
   //Fire!
       setFire(2.6666666666666);
+
       setFire(2.33333333333333333333333);
 
    
 
    
 
   //Infinite radar lock.
 
   //Infinite radar lock.
Line 573: Line 327:
 
  //chance out of 3 for given number of deaths, 'final' saves a few bytes
 
  //chance out of 3 for given number of deaths, 'final' saves a few bytes
 
   private static final String chancesOfReversing = ""
 
   private static final String chancesOfReversing = ""
   + (char) 2 + (char) 0 + (char) 2 + (char) 0
+
   + (char)60000 + (char)0 + (char)60000 + (char) 0
   + (char) 2 + (char) 0 + (char) 1 + (char) 1
+
   //100 rounds of deaths, should be enough?
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  // range which will produce 'bullet hit': 3.0999 - 0.0999 = 3
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  //required reverse probability: 0.08
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  //thus 3/x = 0.08 --> x = 3/0.08 = 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
  + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
+
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38;
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1;
 
 
   
 
   
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
 
  static String enemyHistory = ""
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 2
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char)-2 + (char)-4 + (char)-6
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-8 + (char)-8 + (char)-8 + (char)-8
 
  + (char)-7 + (char)-6 + (char)-5 + (char)-4
 
  + (char)-3 + (char)-2 + (char)-1 + (char)1
 
  + (char) 2 + (char) 4 + (char) 6 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 8 + (char) 8 + (char) 8 + (char) 8
 
  + (char) 7 + (char) 6 + (char) 5 + (char) 4
 
  + (char) 3 + (char) 2 + (char) 1 + (char) 1;
 
}
 
 
</syntaxhighlight>
 
 
== Version 1.0.0 ==
 
 
<syntaxhighlight>
 
/*
 
Yatagan 1.0.0 by Sheldor & Skilgannon
 
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
 
 
Credits:
 
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
 
and a general thanks to all open source bot authors and contributors to the RoboWiki.
 
 
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
 
see license here: http://robowiki.net/wiki/RWPCL
 
*/
 
 
package sheldor.jk;
 
 
import robocode.*;
 
import robocode.util.Utils;
 
 
public class Yatagan extends AdvancedRobot
 
{
 
//Global variables.
 
  static double direction;
 
  static double enemyEnergy;
 
 
  static int deathCount;
 
 
//En garde!
 
  public void run()
 
  {
 
    // setAdjustGunForRobotTurn(true);
 
 
 
  //Start spinning radar and initialize direction to infinity.
 
      setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
 
  }
 
 
  public void onScannedRobot(ScannedRobotEvent e)
 
  {
 
  //Local variables.
 
      int integer = 30;
 
      double absoluteBearing;
 
      double distance;
 
      int matchPosition;
 
 
 
  //Oscillating/Random movement.
 
      if( (char) ((enemyEnergy - 1.0999  - (enemyEnergy = e.getEnergy()))) < 2)
 
      {
 
        direction *= (chancesOfReversing.charAt(deathCount) - 3*Math.random());
 
      }
 
      setAhead(direction);
 
 
 
  //Stay perpendicular to the enemy.
 
      setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
 
 
 
  //Pattern Matching.
 
      enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
 
 
 
  // search for a match
 
      while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
 
 
 
      integer = (int)(distance);
 
  // calculate aim offset
 
     
 
      do {
 
        absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) /  distance;
 
      } while ((integer -= 12) > 0);
 
 
 
  //Aim at the predicted target.
 
      setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
 
 
 
  //Fire!
 
      setFire(2.6666666666666666666666666666);
 
 
 
  //Infinite radar lock.
 
      setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
 
  }
 
 
   
 
   
  public void onDeath(DeathEvent e)
 
  {
 
      deathCount++;
 
  }
 
 
  public void onHitWall(HitWallEvent e)
 
  {
 
  //Reverse direction when the bot hits a wall.
 
      direction = -direction;
 
  }
 
 
//chance out of 3 for given number of deaths, 'final' saves a few bytes
 
  private static final String chancesOfReversing = ""
 
  + (char) 3 + (char) 0 + (char) 3 + (char) 0
 
  + (char) 3 + (char) 0 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1
 
  + (char) 1 + (char) 1 + (char) 1 + (char) 1;
 
 
   
 
   
 
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
 
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking

Revision as of 00:39, 22 March 2013

Development Version

/*
Yatagan 1.0.3 by Sheldor & Skilgannon
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
 
Credits: 
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
and a general thanks to all open source bot authors and contributors to the RoboWiki.
 
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
see license here: http://robowiki.net/wiki/RWPCL
*/
 
package sheldor.jk;
 
import robocode.*;
import robocode.util.Utils;
 
public class Yatagan extends AdvancedRobot
{
//Global variables.
   static double direction;
   static double enemyEnergy;
 
   static int deathCount;	
 
//En garde!
   public void run()
   {
      setAdjustGunForRobotTurn(true);
   
   //Start spinning radar and initialize direction to infinity.
      setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
   }
 
   public void onScannedRobot(ScannedRobotEvent e)
   {
   //Local variables.
      int integer = 30;
      double absoluteBearing;
      double distance;
      int matchPosition;
   
   //Orbiting/Oscillating/Random movement, all depending on how big the number you multiply the random with is.
      if( (char) ((enemyEnergy - 1.09999999999 
      + chancesOfReversing.charAt(deathCount)*Math.random() 
      - (enemyEnergy = e.getEnergy()))) <= 1 )
      {
         onHitWall(null);
      }		
      setAhead(direction);
   
   //Stay perpendicular to the enemy.
      setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
   
   //Pattern Matching.
      enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
   
   // search for a match
      while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
   
      integer = (int)(distance);
   // calculate aim offset
   
      do { 
         absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) /  distance;
      } while ((integer -= 13) > 0);
   
   //Aim at the predicted target.
      setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
   
   //Fire!
      setFire(2.33333333333333333333333);
   
   //Infinite radar lock.
      setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
   }
 
   public void onDeath(DeathEvent e)
   {
      deathCount++;
   }
 
   public void onHitWall(HitWallEvent e)
   {
   //Reverse direction when the bot hits a wall.
      direction = -direction;
   }
 
 //chance out of 3 for given number of deaths, 'final' saves a few bytes
   private static final String chancesOfReversing = ""
   + (char)60000 + (char)0 + (char)60000 + (char) 0
   //100 rounds of deaths, should be enough?
   // range which will produce 'bullet hit': 3.0999 - 0.0999 = 3
   //required reverse probability: 0.08
   //thus 3/x = 0.08 --> x = 3/0.08 = 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38;
 
 
 
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
   static String enemyHistory = ""
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 2
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char)-2 + (char)-4 + (char)-6
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-7 + (char)-6 + (char)-5 + (char)-4
   + (char)-3 + (char)-2 + (char)-1 + (char)1
   + (char) 2 + (char) 4 + (char) 6 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 7 + (char) 6 + (char) 5 + (char) 4
   + (char) 3 + (char) 2 + (char) 1 + (char) 1;
}

Latest Released Version (1.0.3)

/*
Yatagan 1.0.3 by Sheldor & Skilgannon
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
 
Credits: 
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
and a general thanks to all open source bot authors and contributors to the RoboWiki.
 
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
see license here: http://robowiki.net/wiki/RWPCL
*/
 
package sheldor.jk;
 
import robocode.*;
import robocode.util.Utils;
 
public class Yatagan extends AdvancedRobot
{
//Global variables.
   static double direction;
   static double enemyEnergy;
 
   static int deathCount;	
 
//En garde!
   public void run()
   {
      setAdjustGunForRobotTurn(true);
   
   //Start spinning radar and initialize direction to infinity.
      setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
   }
 
   public void onScannedRobot(ScannedRobotEvent e)
   {
   //Local variables.
      int integer = 30;
      double absoluteBearing;
      double distance;
      int matchPosition;
   
   //Orbiting/Oscillating/Random movement, all depending on how big the number you multiply the random with is.
      if( (char) ((enemyEnergy - 1.09999999999 
      + chancesOfReversing.charAt(deathCount)*Math.random() 
      - (enemyEnergy = e.getEnergy()))) <= 1 )
      {
         onHitWall(null);
      }		
      setAhead(direction);
   
   //Stay perpendicular to the enemy.
      setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
   
   //Pattern Matching.
      enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
   
   // search for a match
      while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
   
      integer = (int)(distance);
   // calculate aim offset
   
      do { 
         absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) /  distance;
      } while ((integer -= 13) > 0);
   
   //Aim at the predicted target.
      setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
   
   //Fire!
      setFire(2.33333333333333333333333);
   
   //Infinite radar lock.
      setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
   }
 
   public void onDeath(DeathEvent e)
   {
      deathCount++;
   }
 
   public void onHitWall(HitWallEvent e)
   {
   //Reverse direction when the bot hits a wall.
      direction = -direction;
   }
 
 //chance out of 3 for given number of deaths, 'final' saves a few bytes
   private static final String chancesOfReversing = ""
   + (char)60000 + (char)0 + (char)60000 + (char) 0
   //100 rounds of deaths, should be enough?
   // range which will produce 'bullet hit': 3.0999 - 0.0999 = 3
   //required reverse probability: 0.08
   //thus 3/x = 0.08 --> x = 3/0.08 = 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38
   + (char) 38 + (char) 38 + (char) 38 + (char) 38 + (char) 38;
 
 
 
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
   static String enemyHistory = ""
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
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   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 2
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   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char) 1 + (char) 1 + (char) 1
   + (char) 1 + (char)-2 + (char)-4 + (char)-6
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-8 + (char)-8 + (char)-8 + (char)-8
   + (char)-7 + (char)-6 + (char)-5 + (char)-4
   + (char)-3 + (char)-2 + (char)-1 + (char)1
   + (char) 2 + (char) 4 + (char) 6 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 8 + (char) 8 + (char) 8 + (char) 8
   + (char) 7 + (char) 6 + (char) 5 + (char) 4
   + (char) 3 + (char) 2 + (char) 1 + (char) 1;
}