Help:Help
Help!, in both meanings of the term
This is a page for help, please edit the page and add the link to your problem, and maybe one of the more experienced coders will have a solution. This is a potluck help page so, bring your problems, and be ready to share your expertise and knowledge with the less fortunate!
--Pkdeken 15:38, 29 April 2009 (UTC)
I suggest to create another page as subpages and make a link would be easier. » Nat | Talk » 16:00, 29 April 2009 (UTC)
I know it says post a link, but this is easier
package tutorials; import robocode.*; import robocode.util.Utils; import java.util.ArrayList; import java.awt.geom.Point2D; public class GFTTutorial extends AdvancedRobot { public final static int BINS = 47; public final static int MIDDLE_BIN = (BINS - 1) / 2; public final static double MAX_ESC_ANGLE = 0.8143399421265254D; public final static double BIN_WIDTH = MAX_ESC_ANGLE / MIDDLE_BIN; public static ArrayList aimFactors = new ArrayList(); public double prevVelocity = 0; public double t = 0; public Point2D.Double enemyLoc; public void run() { while (true) { turnRadarRightRadians(Double.POSITIVE_INFINITY); } } public void onScannedRobot(ScannedRobotEvent e) { double absBearing = getHeadingRadians() + e.getBearingRadians(); double firePower = 3D; BulletWave w = new BulletWave(); w.firedLocation = new Point2D.Double(getX(), getY()); enemyLoc = new Point2D.Double(getX() + Math.sin(absBearing) * e.getDistance(), getY() + Math.cos(absBearing) * e.getDistance()); w.bearingDir = (e.getVelocity() * Math.sin(e.getHeadingRadians() - absBearing) < 0 ? -BIN_WIDTH : BIN_WIDTH); w.bearing = absBearing; w.velocity = bulletVelocity(firePower); //originalDistance,wall,acceleration,myVelocity,time,timeSinceAccel; w.originalDistance = e.getDistance(); w.wallX = getX() + Math.sin(absBearing) * e.getDistance() > 400 ? 800 - getX() + Math.sin(absBearing) * e.getDistance() : getX() + Math.sin(absBearing) * e.getDistance() == 0 ? 0 : getX() + Math.sin(absBearing) * e.getDistance(); w.wallY = getY()+ Math.cos(absBearing) * e.getDistance() > 300 ? 600 - getY()+ Math.cos(absBearing) * e.getDistance() : getY()+ Math.cos(absBearing) * e.getDistance() == 0 ? 0 : getY()+ Math.cos(absBearing) * e.getDistance(); w.acceleration = e.getVelocity() - prevVelocity; w.time = getTime(); t = w.acceleration == 0 ? t++ : 0; w.timeSinceAccel = t; prevVelocity = e.getVelocity(); int XX = 100; int[] TopXX = new int[XX]; double[] TopDiff = new double[XX]; for (int i=0;i<aimFactors.size();i++){ double diff = findDifference(w,(AimFactor)aimFactors.get(i)); for (int r=XX - 1;r>=0;r--) { if (diff < TopDiff[r]){ TopXX[r] = ((AimFactor)aimFactors.get(i)).angle; TopDiff[r] = diff; break; } } } double[] stats = new double[BINS]; for (int i = 0; i < XX; i++) { stats[TopXX[i]]++; } int mostVisited = MIDDLE_BIN; for (int i = 0; i < BINS; i++) { if (stats[i] > stats[mostVisited]) mostVisited = i; } setTurnGunRightRadians(Utils.normalRelativeAngle(absBearing - getGunHeadingRadians() + w.bearingDir * (mostVisited - MIDDLE_BIN))); if (setFireBullet(firePower) != null) addCustomEvent(w); setTurnRadarRightRadians(Utils.normalRelativeAngle(absBearing - getRadarHeadingRadians()) * 2); } double findDifference(BulletWave w, AimFactor a) { double diff = 0; diff += Math.sqrt(Math.pow((1-(w.originalDistance/a.distanceIndex)),2)); diff += Math.sqrt(Math.pow((1-(w.wallX/a.wallIndexX)),2)); diff += Math.sqrt(Math.pow((1-(w.wallY/a.wallIndexY)),2)); diff += Math.sqrt(Math.pow((1-(w.acceleration/a.accelerationIndex)),2)); diff += Math.sqrt(Math.pow((1-(w.myVelocity/a.velocityIndex)),2)); diff += Math.sqrt(Math.pow((1-(w.time/a.time)),2)); diff += Math.sqrt(Math.pow((1-(w.timeSinceAccel/a.timeSinceAccel)),2)); return diff; } double absoluteBearing(Point2D.Double p, Point2D.Double q) { return Math.atan2(q.x - p.x, q.y - p.y); } double bulletVelocity(double power) { return 20 - 3 * power; } public class BulletWave extends Condition { Point2D.Double firedLocation; double velocity, distanceTraveled, bearing, bearingDir; double originalDistance,wallX,wallY,acceleration,myVelocity,time,timeSinceAccel; public boolean test() { distanceTraveled += velocity; double distance = firedLocation.distance(enemyLoc); if (distanceTraveled > distance - 18) { try { aimFactors.add(new AimFactor(originalDistance,wallX,wallY,acceleration,myVelocity,time,timeSinceAccel,(int) ((Utils.normalRelativeAngle(absoluteBearing(firedLocation, enemyLoc)) - bearing) / bearingDir) + MIDDLE_BIN)); } catch (Exception e) { } removeCustomEvent(this); } return false; } } public class AimFactor { double distanceIndex,wallIndexX,wallIndexY,accelerationIndex,velocityIndex,time,timeSinceAccel; int angle; public AimFactor(double ad,double awx,double awy,double aa,double av,double at,double ati,int aangle){ distanceIndex = ad; wallIndexX = awx; wallIndexY = awy; accelerationIndex = aa; velocityIndex = av; time = at; timeSinceAccel = ati; angle = aangle; } } }
If you run this you end up with it always firing at guessFactor -1, How can I fix this?
It is supposed to be running a patternMatchingStatitistical Targeting gun. Basically, it segments the data without using nested arrays
--Pkdeken 15:38, 29 April 2009 (UTC)
I'm testing. One thing that is wrong is the BIN_WIDTH calculation, it should be
public final static double BIN_WIDTH = MAX_ESC_ANGLE / (double)MIDDLE_BIN;
And the diff always be NaN (try printing it out). Another thing to mention is this is not patternMatchingStatitistical Targeting gun, but it is a Dynamic Clustering GuessFactor Targeting gun. I'll look into this later when I have time. » Nat | Talk » 16:00, 29 April 2009 (UTC)