AntiPatternMatcherChallenge2K7/WaylanderGun

   import robocode.*;
   import robocode.util.*;
   import java.awt.geom.*;

    public class ChallengerBot? extends AdvancedRobot{

      WaylanderGun? waylanderGun;

       public void run(){
         waylanderGun = new WaylanderGun?(this);

      //your code here

      }

       public void onScannedRobot(ScannedRobotEvent e){

      //your code here

         waylanderGun.onScannedRobot(e);
      }

   }

    class WaylanderGun?
   {

      final static double angleScale = 24;
      final static double velocityScale = 1;
      static double lastEnemyHeading?;

      static boolean firstScan;
      static StringBuilder? data = new StringBuilder?();
      AdvancedRobot bot;

       public WaylanderGun?(AdvancedRobot bot){
         this.bot = bot;
         firstScan = true;
         try{
            data.delete(60000, 80000);
         }
             catch(StringIndexOutOfBoundsException? e){}
      }

       public void onScannedRobot(ScannedRobotEvent e) {

         double headingRadians;
         double eDistance ;
         double eHeadingRadians = e.getHeadingRadians();
         double absbearing=e.getBearingRadians?()+ (headingRadians = bot.getHeadingRadians());

         boolean rammer = (eDistance = e.getDistance()) < 100 
            || bot.getTime() < 20;

         Rectangle2D.Double field = new Rectangle2D.Double(17,17,766,566);

         if(!firstScan)
            data.insert(0,(char)((eHeadingRadians - lastEnemyHeading? )*angleScale))
               .insert(0,(char)(e.getVelocity()*velocityScale));

         int keyLength  = Math.min(data.length(), Math.min(Math.max(2,(int)bot.getTime()*2 - 8), 256));

         int index = -1;
         do{

            index = data.indexOf(data.substring(0, keyLength),(int)eDistance/11)/2;

         }while(index <= 0 && (keyLength/=2) > 1);

         double bulletPower = rammer?3:Math.min(2,Math.min(bot.getEnergy()/16, e.getEnergy()/2));

         double eX=eDistance*Math.sin(absbearing);
         double eY=eDistance*Math.cos(absbearing);

         double db=0;
         double ww=eHeadingRadians; 
         double speed = e.getVelocity();
         double w = eHeadingRadians - lastEnemyHeading?;
         do
         {
            if( index > 1 ){
               speed = (short)data.charAt(index*2 );
               w = ((short)data.charAt(index--*2 - 1))/angleScale;    
            }

         }while ((db+=(20-3*bulletPower))< Point2D.distance(0,0,eX+= (speed*Math.sin(ww+=w)),eY+= (speed*Math.cos(ww))) 
         && field.contains(eX + bot.getX() , eY + bot.getY()));         

         bot.setTurnGunRightRadians?(Utils.normalRelativeAngle(Math.atan2(eX,eY) - bot.getGunHeadingRadians?()));
         bot.setFire(bulletPower);

         bot.setTurnRadarRightRadians(Math.sin(absbearing - bot.getRadarHeadingRadians?())*2);

         lastEnemyHeading?=eHeadingRadians;
         firstScan = false;

      }

   }