Difference between revisions of "Quantum/Source (Java)"

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The following code is functionally equivalent to [[Quantum/Source (Assembly)]] but when compiled with OpenJDK 17 it will be 265 bytes.
 +
 
<syntaxhighlight lang="java">
 
<syntaxhighlight lang="java">
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// -------------------------------------------------------------------------------------------------
 
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// ==============
 
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// Quantum (Nano)
 
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// ==============
 
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// Author: David414
 
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// License: RWPCL (https://robowiki.net/wiki/RWPCL)
 
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// -------------------------------------------------------------------------------------------------
 
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// -------------------------------------------------------------------------------------------------
 
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// Credits
 
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// -------------------------------------------------------------------------------------------------
 
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// Quantum started out life as a tweaked version of Mike Dorgan's DustBunny before being heavily
 
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// shrunk to make room for improved target tracking (inspired by Infinity, also by Mike).
 
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// -------------------------------------------------------------------------------------------------
 
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// Version History
 
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// -------------------------------------------------------------------------------------------------
 
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// ================================================================================
 
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// v0.2.2 (2024-04-06) Codesize: 249  | Colors: Yes | 1v1 capable: No
 
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// ================================================================================
 
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// - Antigravity movement based on DustBunny, but with forces calculated based on
 
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//  where we would aim to hit the enemy, rather than where they currently are
 
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// - Aim like DustBunny but with different energy management based only on how
 
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//  many enemies are still alive. Fire more agressively early on and much less
 
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//  agressively in 1v1
 
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// - Quite a bit of code shrinking to make room for Infinity style target tracking
 
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//
 
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// Nano melee:    2nd APS (64.81),  1st Survival (25.36)
 
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// Micro melee:    9th APS (64.17),  3rd Survival (25.20)
 
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// Mini melee:    18th APS (63.52),  8th Survival (24.63)
 
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// General melee: 67th APS (60.56), 55th Survival (21.60)
 
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//
 
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// Knocked DustBunny off of the top of the table for a few days before settling in to second place.
 
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// Only 0.2 APS behind but significantly ahead on survival.
 
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// Currently assumes a 1000x1000 battlefield. There would be space to remove this restriction but
 
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// that would mean giving up on my colours :(
 
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//
 
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// ================================================================================
 
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// v0.2.2a (2024-04-11) Codesize: 249  | Colors: Yes | 1v1 capable: No
 
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// ================================================================================
 
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// - No functional changes, added credits, version history and commented the code
 
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// -------------------------------------------------------------------------------------------------
 
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// TODO
 
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// -------------------------------------------------------------------------------------------------
 
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// - Measure the APS/Survival impact of moving setTurnRadarRight from run() to onRobotDeath()
 
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// - Experiment with other guns and energy management
 
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// - Find a way to avoid doing a circle of death in the corner, mainly an issue in the final 1v1
 
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// - Thorough testing of different settings for the tuning knobs
 
−
 
 
package d414.nano;
 
package d414.nano;
  
Line 61: Line 13:
 
     // Tuning Knobs
 
     // Tuning Knobs
 
     // ---------------------------------------------------------------------------------------------
 
     // ---------------------------------------------------------------------------------------------
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     static final double WALL_FORCE = 1;
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     static final double WALL_FORCE = 1.0;
 
     static final double AGRAV_DECAY = 0.9;
 
     static final double AGRAV_DECAY = 0.9;
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     static final double AHEAD_AMOUNT = 120;
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     static final double AHEAD_AMOUNT = 120.0;
  
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     static final double AIM_START = 10;
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     static final double AIM_START = 10.0;
 
     static final double AIM_FACTOR = 1.008;
 
     static final double AIM_FACTOR = 1.008;
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     static final double RADAR_LOCK_THRESHOLD = 1;
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    static final double AIM_TOLERANCE = 18.0;
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     static final int    POWER_FACTOR = 2;
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    static final double BULLET_POWER = 2.49999;
 +
    static final double ENERGY_FACTOR = 7.0;
 +
     static final double RADAR_LOCK_THRESHOLD = 1.0;
 +
 
 +
    // ---------------------------------------------------------------------------------------------
 +
    // Constants
 +
    // ---------------------------------------------------------------------------------------------
 +
     static final double BATTLEFIELD_SIZE = 1000.0;
  
 
     // ---------------------------------------------------------------------------------------------
 
     // ---------------------------------------------------------------------------------------------
Line 80: Line 39:
 
     @Override
 
     @Override
 
     public void run() {
 
     public void run() {
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         setAllColors(Color.cyan);
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         //setAllColors(Color.cyan);
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         setAdjustGunForRobotTurn(true);
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         setTurnRadarRight(targetDistance = Double.POSITIVE_INFINITY);
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        onRobotDeath(null);
 
 
     }
 
     }
  
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    // Moving setTurnRadarRight here, instead of in run(), saves 1 byte
 
 
     @Override
 
     @Override
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     public void onRobotDeath(RobotDeathEvent e) {
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     public void onRobotDeath(RobotDeathEvent r1e) {
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         setTurnRadarRight(targetDistance = Double.POSITIVE_INFINITY);
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         targetDistance = Double.POSITIVE_INFINITY;
 
     }
 
     }
  
 
     @Override
 
     @Override
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     public void onScannedRobot(ScannedRobotEvent e) {
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     public void onScannedRobot(ScannedRobotEvent r1e) {
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         double distance; // Keep this first to save 2 bytes
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         double r1d;
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         double absoluteBearing;
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         double r3d;
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        double aimAngle;
 
  
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         // 1. Calculate the angle DustBunny 3.8's gun would aim at
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         setAdjustGunForRobotTurn(true);
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        // 2. Update rolling averages of antigravity forces, using the aim angle of DustBunny 3.8's
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         setTurnLeftRadians(Utils.normalRelativeAngle(
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        //    gun instead of the absoluteBearing
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                     (r3d = getHeadingRadians())
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        // 3. Move based on angtigravity forces
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                    - Math.atan2(
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         setTurnRightRadians(Utils.normalRelativeAngle(
 
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                     Math.atan2(
 
 
                         (xForce = xForce * AGRAV_DECAY
 
                         (xForce = xForce * AGRAV_DECAY
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                         - Math.sin(
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                         - Math.sin(r3d = (r3d += r1e.getBearingRadians())
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                            aimAngle = (absoluteBearing = e.getBearingRadians() + getHeadingRadians())
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                            + (Math.sin(r1e.getHeadingRadians() - r3d)
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                            + (e.getVelocity()
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                                * r1e.getVelocity()
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                                 / (AIM_START + Math.pow(AIM_FACTOR, distance = e.getDistance()))
+
                                 / (AIM_START + Math.pow(AIM_FACTOR, r1d = r1e.getDistance()))
 
                               )
 
                               )
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                            * Math.sin(e.getHeadingRadians() - absoluteBearing)
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                             ) / r1d
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                             ) / distance
 
 
                         )
 
                         )
 
                         + calcWallForce(getX())
 
                         + calcWallForce(getX())
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                        //+ calcWallForce(getX(), getBattleFieldWidth())
 
 
                         ,  
 
                         ,  
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                         (yForce = yForce * AGRAV_DECAY - Math.cos(aimAngle) / distance)
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                         (yForce = yForce * AGRAV_DECAY - Math.cos(r3d) / r1d)
 
                         + calcWallForce(getY())
 
                         + calcWallForce(getY())
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                        //+ calcWallForce(getY(), getBattleFieldHeight())
 
 
                         )
 
                         )
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                    - getHeadingRadians()
 
 
                     ));
 
                     ));
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         setAhead(AHEAD_AMOUNT - Math.abs(getTurnRemaining()));
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         setBack(Math.abs(getTurnRemaining()) - AHEAD_AMOUNT);
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        // Use Infinity style target tracking
 
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        if (distance < targetDistance || e.getName() == targetName) {
 
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            targetName = e.getName();
 
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            targetDistance = distance;
 
  
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            if (getGunHeat() < RADAR_LOCK_THRESHOLD) {
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        if (r1e.getName() == targetName || r1d < targetDistance) {
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                setTurnRadarLeft(getRadarTurnRemaining());
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            targetName = r1e.getName();
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             }
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             targetDistance = r1d;
  
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             // Fire more agressively when there are more enemies.
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             setTurnRadarRight((getGunHeat() - RADAR_LOCK_THRESHOLD) * getRadarTurnRemaining());
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            // With POWER_FACTOR = 2
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             setTurnGunLeftRadians(Utils.normalRelativeAngle(getGunHeadingRadians() - r3d));
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            // 6-9 enemies: setFire(3)
 
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            // 4-5 enemies: setFire(2)
 
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            // 2-3 enemies: setFire(1)
 
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             // 1v1:        setFire(0.1)
 
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            setFire(getOthers() / POWER_FACTOR);
 
  
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             setTurnGunRightRadians(Utils.normalRelativeAngle(aimAngle - getGunHeadingRadians()));
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             if (Math.abs(getGunTurnRemainingRadians()) < (AIM_TOLERANCE / r1d)) {
 +
                setFire(Math.min(getEnergy() / ENERGY_FACTOR, BULLET_POWER));
 +
            }
 
         }
 
         }
 
     }
 
     }
  
−
    // Factoring out the code for wall forces saves 8 bytes
+
     public static double calcWallForce(double r0d) {
−
     public static double calcWallForce(double d) {
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         return (WALL_FORCE / r0d) - (WALL_FORCE / (BATTLEFIELD_SIZE - r0d));
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        return (WALL_FORCE / d) - (WALL_FORCE / (1000 - d));
 
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    }
 
−
 
 
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    // Use this version of calcWallForce to remove the assumption that the battlefield is 1000x1000
 
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    // This would cost us 6 bytes
 
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    /*
 
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    public static double calcWallForce(double d, double len) {
 
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         return (WALL_FORCE / d) - (WALL_FORCE / (len - d));
 
 
     }
 
     }
−
    */
 
 
}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>

Latest revision as of 03:28, 30 May 2024

The following code is functionally equivalent to Quantum/Source (Assembly) but when compiled with OpenJDK 17 it will be 265 bytes. 

package d414.nano;

import robocode.*;
import robocode.util.Utils;

import java.awt.Color;

public class Quantum extends AdvancedRobot {
    // ---------------------------------------------------------------------------------------------
    // Tuning Knobs
    // ---------------------------------------------------------------------------------------------
    static final double WALL_FORCE = 1.0;
    static final double AGRAV_DECAY = 0.9;
    static final double AHEAD_AMOUNT = 120.0;

    static final double AIM_START = 10.0;
    static final double AIM_FACTOR = 1.008;
    static final double AIM_TOLERANCE = 18.0;
    static final double BULLET_POWER = 2.49999;
    static final double ENERGY_FACTOR = 7.0;
    static final double RADAR_LOCK_THRESHOLD = 1.0;

    // ---------------------------------------------------------------------------------------------
    // Constants
    // ---------------------------------------------------------------------------------------------
    static final double BATTLEFIELD_SIZE = 1000.0;

    // ---------------------------------------------------------------------------------------------
    // Globals
    // ---------------------------------------------------------------------------------------------
    static String targetName;
    static double targetDistance;
    static double xForce;
    static double yForce;

    @Override
    public void run() {
        //setAllColors(Color.cyan);
        setTurnRadarRight(targetDistance = Double.POSITIVE_INFINITY);
    }

    @Override
    public void onRobotDeath(RobotDeathEvent r1e) {
        targetDistance = Double.POSITIVE_INFINITY;
    }

    @Override
    public void onScannedRobot(ScannedRobotEvent r1e) {
        double r1d;
        double r3d;

        setAdjustGunForRobotTurn(true);
        setTurnLeftRadians(Utils.normalRelativeAngle(
                    (r3d = getHeadingRadians())
                    - Math.atan2(
                        (xForce = xForce * AGRAV_DECAY
                         - Math.sin(r3d = (r3d += r1e.getBearingRadians())
                             + (Math.sin(r1e.getHeadingRadians() - r3d)
                                 * r1e.getVelocity()
                                 / (AIM_START + Math.pow(AIM_FACTOR, r1d = r1e.getDistance()))
                               )
                             ) / r1d
                        )
                        + calcWallForce(getX())
                        , 
                        (yForce = yForce * AGRAV_DECAY - Math.cos(r3d) / r1d)
                        + calcWallForce(getY())
                        )
                    ));
        setBack(Math.abs(getTurnRemaining()) - AHEAD_AMOUNT);

        if (r1e.getName() == targetName || r1d < targetDistance) {
            targetName = r1e.getName();
            targetDistance = r1d;

            setTurnRadarRight((getGunHeat() - RADAR_LOCK_THRESHOLD) * getRadarTurnRemaining());
            setTurnGunLeftRadians(Utils.normalRelativeAngle(getGunHeadingRadians() - r3d));

            if (Math.abs(getGunTurnRemainingRadians()) < (AIM_TOLERANCE / r1d)) {
                setFire(Math.min(getEnergy() / ENERGY_FACTOR, BULLET_POWER));
            }
        }
    }

    public static double calcWallForce(double r0d) {
        return (WALL_FORCE / r0d) - (WALL_FORCE / (BATTLEFIELD_SIZE - r0d));
    }
}
Retrieved from "http://robowiki.net/w/index.php?title=Quantum/Source_(Java)&oldid=57930"