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How does this look? It will hit walls when it doesn't have enough time to turn, but it doesn't stick on them. If there were only eight bytes to spare I could make it slow down when it had to make a wide turn, which would greatly reduce the number of wall hits.
package cs;
//import java.awt.Color;
import java.awt.geom.Point2D;
import robocode.AdvancedRobot;
//import robocode.HitWallEvent;
import robocode.ScannedRobotEvent;
import robocode.util.Utils;
/**
* Talon - a Nano Melee robot by Chase
*
* The idea is to avoid driving toward enemy robots, nearer ones are more
* dangerous to drive towards.
*
* Codesize: 247
*/
public class Talon extends AdvancedRobot {
private static Point2D.Double[] map = new Point2D.Double[10];
private static int n = 0;
public void run() {
//setAdjustGunForRobotTurn(true); //Sheldor: In melee this doesn't really matter.
//setAllColors(Color.RED); //Sheldor: I'm very sorry. :(
double angle, bestDanger, danger;
while(true) {
setAhead((bestDanger = angle = 360) /*- (3 * getTurnRemaining())*/); //Sheldor: Slowing down before making big turns makes the wall avoidance much better, but it costs ~8 bytes.
while(angle-- > 0) {
int t;
setFire(t = getOthers()); //Sheldor: From Graviton.
//Sheldor: Drive toward the center of the field when the bot gets near a wall.
//This will only work properly on a 1000/1000 pixel field.
danger = -Math.abs(Utils.normalRelativeAngleDegrees(angle - Math.toDegrees(Math.atan2(getX() - 500, getY() - 500)))) *
((short)(table.charAt((int)getX()) + table.charAt((int)getY())));
try {
while(true) {
// our most recent scans, unfortunately not enough room
// to project them
Point2D.Double v = map[--t];
// set our gun to face this nearest enemy
setTurnGunRight(Utils.normalRelativeAngleDegrees(v.y - getGunHeading()));
// the difference between current angle we are
// considering and the enemy
// multiply it by how close they are, closer is more
// dangerous to move towards
danger += 1 / (Math.abs(Utils.normalRelativeAngleDegrees(angle - v.y)) + 1) / v.x; //Sheldor: "X / Y" has exactly the same effect as "X * (1 / Y)" but is ~3 bytes smaller.
}
} catch(Exception e) {
// We don't have room for any kind of sanity checks, also
// the only way to get out of the loop without
// having to have a comparison, saves us some code size
}
if(danger < bestDanger) {
bestDanger = danger;
setTurnRight(Utils.normalRelativeAngleDegrees(angle - getHeading()));
}
}
// Turning it by only 1 saves us some code size but in radians this
// value > PI/4 the maximum
// turn the radar can turn, meaning it will cover the full arc as
// long as we call it every turn.
turnRadarRightRadians(1);
}
}
public void onScannedRobot(ScannedRobotEvent e) {
try {
// Set the most recent scan into our map of enemies
map[--n] = new Point2D.Double(e.getDistance(), getHeading() + e.getBearing());
}
catch(Exception ex) {
// attempted to scan but it failed, set the number of enemies again
// we miss an enemy scan but we gain some code size here
n = getOthers();
}
}
static final String table = "\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064" +
"\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0001" +
"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001" +
"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\u0001\u0001\u0001\u0001\u0001" +
"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001" +
"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064" +
"\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064" +
"\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064\u0064";
}
