Code: tajbot/tajy/Enemy.java

package tajy;
import robocode.*;

/**
 * MyClass - a class by (your name here)
 */
public class Enemy
{
	private String name;
	private Vector position;
	private Vector heading;
	private double velocity;
	private long scanTime;
	private double distance;
	private double hitMe = 1;
	private long lastHitMe = 1;
	private double missedHim = 1;
	private double gotHim = 1;
	private long lastRatioClean = 0;
	private double current = 1;
	private double energy;
	
	private CycleSpotter cycle;
	
	public Enemy(String name)
	{
		this.name = name;
		cycle = new CycleSpotter(1024);
	}
	
	/**
	 * Returns the ratio of hits to misses.
	 * @return
	 */
	public double hitRatio()
	{
		return gotHim / missedHim;
	}
	
	public CycleSpotter getPatternWatcher()
	{
		return cycle;
	}
	
	public void setTargeted(boolean b)
	{
		if (b) current = 2;
		else current = 1;
	}
	
	public void shotMe(Robot r)
	{
		hitMe += 2;
		lastHitMe = r.getTime();
	}
	
	public void missedHim()
	{
		missedHim++;
	}
	
	public void gotHim()
	{
		gotHim++;
	}
	
	public String getName()
	{
		return name;
	}
	
	public double getPriority()
	{
		double e = 1;
		if (energy < 10) e = 20;
		return (e * current * hitRatio()) / (distance * 5);
	}
	
	public double getThreat()
	{
		return hitMe * getPriority();
	}
	
	public Vector getPosition()
	{
		return position;
	}
	
	public double getDistance(Vector m)
	{
		m = position.subtract(m);
		return m.getDistance();
	}
	
	public Vector getHeading()
	{
		return heading;
	}
	
	public double getVelocity()
	{
		return velocity;
	}
	
	public double getTimeSinceScan(double currentTime)
	{
		return currentTime - scanTime;
	}
	
	public long getTimeSinceScan(long currentTime)
	{
		return currentTime - scanTime;
	}
	
	public void hit(HitRobotEvent e, Robot me)
	{
		distance = 0.1;
		double bearing = e.getBearing();
		Vector m = new Vector(me.getX(), me.getY());
		position = BotMaths.getTargetCoord(m, me.getHeading(), 
				bearing, distance);
	}
	
	public void scanned(ScannedRobotEvent e, Robot me)
	{
		// calculate target's coordinate
		Vector m = new Vector(me.getX(), me.getY());
		position = BotMaths.getTargetCoord(m, me.getHeading(), 
						e.getBearing(), e.getDistance());
		
		// store the circumstance data
		scanTime = me.getTime();
		velocity = e.getVelocity();
		distance = e.getDistance();
		energy = e.getEnergy();
		
		// log the target's position
		cycle.add(scanTime, position.getX(), position.getY());
							
		// store the target's heading and velocity
		heading = Vector.fromAngleDegrees(e.getHeading(), e.getVelocity());
		
		// clean hit ratio
		/*if (lastRatioClean + 300 <= me.getTime())
		{
			gotHim = 1;
			missedHim = 1;
			hitMe = 1;
			lastRatioClean = me.getTime();
		}*/
	}
}
TajBot (Robocode bot)

Enemy.java
