RednaxelaBot: Using .

2010-07-01T08:29:23Z

Using <syntaxhighlight>.

Jab: Module movement Random

2008-03-23T22:57:26Z

Module movement Random

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<pre>
package jab.movement;

import java.awt.geom.Point2D;
import java.awt.geom.RoundRectangle2D;

import robocode.util.Utils;

import jab.Module;
import jab.Movement;

/**
* Credits
* This code is released under the RoboWiki Public Code License (RWPCL),
* RandomMovementBot, by PEZ. Demonstrating a simple, extensible
* way to go about random 1v1 movement.
*/
public class Random extends Movement {

public Random(Module bot) {
super(bot);
}

private static final double MAX_VELOCITY = 8;
private static final double WALL_MARGIN = 25;
private double movementLateralAngle = 0.2;

public void move() {
considerChangingDirection();
Point2D robotDestination = null;
double tries = 0;
do {
robotDestination = vectorToLocation(absoluteBearing(
new Point2D.Double(bot.enemy.x, bot.enemy.y),
new Point2D.Double(bot.getX(), bot.getY()))
+ movementLateralAngle, bot.enemy.distance
* (1.1 - tries / 100.0), new Point2D.Double(bot.enemy.x,
bot.enemy.y));
tries++;
} while (tries < 100
&& !fieldRectangle(WALL_MARGIN).contains(robotDestination));
goTo(robotDestination);
}

private void considerChangingDirection() {
// Change lateral direction at random
// Tweak this to go for flat movement
double flattenerFactor = 0.05;
if (Math.random() < flattenerFactor) {
movementLateralAngle *= -1;
}
}

private RoundRectangle2D fieldRectangle(double margin) {
return new RoundRectangle2D.Double(margin, margin, bot
.getBattleFieldWidth()
- margin * 2, bot.getBattleFieldHeight() - margin * 2, 75, 75);
}

private void goTo(Point2D destination) {
double angle = Utils.normalRelativeAngle(absoluteBearing(
new Point2D.Double(bot.getX(), bot.getY()), destination)
- bot.getHeadingRadians());
double turnAngle = Math.atan(Math.tan(angle));
bot.setTurnRightRadians(turnAngle);
bot.setAhead(new Point2D.Double(bot.getX(), bot.getY())
.distance(destination)
* (angle == turnAngle ? 1 : -1));
// Hit the brake pedal hard if we need to turn sharply
bot.setMaxVelocity(Math.abs(bot.getTurnRemaining()) > 33 ? 0
: MAX_VELOCITY);
}

private static Point2D vectorToLocation(double angle, double length,
Point2D sourceLocation) {
return vectorToLocation(angle, length, sourceLocation,
new Point2D.Double());
}

private static Point2D vectorToLocation(double angle, double length,
Point2D sourceLocation, Point2D targetLocation) {
targetLocation.setLocation(sourceLocation.getX() + Math.sin(angle)
* length, sourceLocation.getY() + Math.cos(angle) * length);
return targetLocation;
}

private static double absoluteBearing(Point2D source, Point2D target) {
return Math.atan2(target.getX() - source.getX(), target.getY()
- source.getY());
}

}
</pre>

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-<pre>
+<syntaxhighlight>
 package jab.movement;
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+}
-</pre>
+</syntaxhighlight>

Module/Movement/Random - Revision history

RednaxelaBot: Using .

Jab: Module movement Random