Yatagan/Source
< Yatagan
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/*
Yatagan 1.0.3 by Sheldor & Skilgannon; Release date: 3-21-2013
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
Codesize: 247 bytes; Code size class: NanoBot
Credits:
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified.
And a general thanks to all open source bot authors and contributors to the RoboWiki.
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
see license here: http://robowiki.net/wiki/RWPCL
*/
package sheldor.jk;
import robocode.*;
import robocode.util.Utils;
public class Yatagan extends AdvancedRobot
{
//Global variables.
static double direction;
static double enemyEnergy;
static int deathCount;
public void run()
{
//setAdjustGunForRobotTurn(true);
//Start spinning radar and initialize direction to infinity.
setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
}
public void onScannedRobot(ScannedRobotEvent e)
{
//Local variables.
int integer = 30;
double absoluteBearing;
double distance;
int matchPosition;
//Watch for a drop in the enemy's energy between 0 and 3. Thanks to Miked0801 for his awesome char trick.
if( (char) ((enemyEnergy - 1.09999 - (enemyEnergy = e.getEnergy()))) <= 1)
{
//One-way/Oscillating/Random movement.
direction *= (chancesOfReversing.charAt(deathCount) - 2*Math.random());
}
setAhead(direction);
//Stay mostly perpendicular to the enemy, but try to maintain a distance of 160 pixels.
setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
//Pattern Matching.
enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
// search for a match
while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
integer = (int)(distance);
// calculate aim offset
do {
absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) / distance;
} while ((integer -= 12) > 0);
//Aim at the predicted target.
setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
//Fire!
//The bullet power must be a multiple of .3333333333333333333333...
setFire(2.666666666666666666666666666666666666666666666666666666);
//Infinite radar lock.
setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
}
public void onDeath(DeathEvent e)
{
//Move to the next cell in the table every time the bot dies.
deathCount++;
}
public void onHitWall(HitWallEvent e)
{
//Reverse direction when the bot hits a wall.
direction = -direction;
}
//The chance that the bot will reverse orbit direction when the enemy fires.
//Since this is an unchanging table, we can save a few bytes by using "final."
private static final String chancesOfReversing = ""
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//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
static String enemyHistory = ""
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}Version 1.0.2
/*
Yatagan 1.0.2 by Sheldor & Skilgannon
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
Credits:
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
and a general thanks to all open source bot authors and contributors to the RoboWiki.
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
see license here: http://robowiki.net/wiki/RWPCL
*/
package sheldor.jk;
import robocode.*;
import robocode.util.Utils;
public class Yatagan extends AdvancedRobot
{
//Global variables.
static double direction;
static double enemyEnergy;
static int deathCount;
//En garde!
public void run()
{
//setAdjustGunForRobotTurn(true);
//Start spinning radar and initialize direction to infinity.
setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
}
public void onScannedRobot(ScannedRobotEvent e)
{
//Local variables.
int integer = 30;
double absoluteBearing;
double distance;
int matchPosition;
//Oscillating/Random movement.
if( (char) ((enemyEnergy - 1.09999 - (enemyEnergy = e.getEnergy()))) <= 1)
{
direction *= (chancesOfReversing.charAt(deathCount) - 2*Math.random());
}
setAhead(direction);
//Stay perpendicular to the enemy.
setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
//Pattern Matching.
enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
// search for a match
while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
integer = (int)(distance);
// calculate aim offset
do {
absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) / distance;
} while ((integer -= 12) > 0);
//Aim at the predicted target.
setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
//Fire!
setFire(2.6666666666666);
//Infinite radar lock.
setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
}
public void onDeath(DeathEvent e)
{
deathCount++;
}
public void onHitWall(HitWallEvent e)
{
//Reverse direction when the bot hits a wall.
direction = -direction;
}
//chance out of 3 for given number of deaths, 'final' saves a few bytes
private static final String chancesOfReversing = ""
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//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
static String enemyHistory = ""
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+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 7 + (char) 6 + (char) 5 + (char) 4
+ (char) 3 + (char) 2 + (char) 1 + (char) 1;
}Version 1.0.1
/*
Yatagan 1.0.1 by Sheldor & Skilgannon
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
Credits:
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
and a general thanks to all open source bot authors and contributors to the RoboWiki.
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
see license here: http://robowiki.net/wiki/RWPCL
*/
package sheldor.jk;
import robocode.*;
import robocode.util.Utils;
public class Yatagan extends AdvancedRobot
{
//Global variables.
static double direction;
static double enemyEnergy;
static int deathCount;
//En garde!
public void run()
{
//setAdjustGunForRobotTurn(true);
//Start spinning radar and initialize direction to infinity.
setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
}
public void onScannedRobot(ScannedRobotEvent e)
{
//Local variables.
int integer = 30;
double absoluteBearing;
double distance;
int matchPosition;
//Oscillating/Random movement.
if( (char) ((enemyEnergy - 1 - (enemyEnergy = e.getEnergy()))) <= 1)
{
direction *= (chancesOfReversing.charAt(deathCount) - 2*Math.random());
}
setAhead(direction);
//Stay perpendicular to the enemy.
setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
//Pattern Matching.
enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
// search for a match
while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
integer = (int)(distance);
// calculate aim offset
do {
absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) / distance;
} while ((integer -= 12) > 0);
//Aim at the predicted target.
setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
//Fire!
setFire(2.6666666666666);
//Infinite radar lock.
setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
}
public void onDeath(DeathEvent e)
{
deathCount++;
}
public void onHitWall(HitWallEvent e)
{
//Reverse direction when the bot hits a wall.
direction = -direction;
}
//chance out of 3 for given number of deaths, 'final' saves a few bytes
private static final String chancesOfReversing = ""
+ (char) 2 + (char) 0 + (char) 2 + (char) 0
+ (char) 2 + (char) 0 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
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+ (char) 1 + (char) 1 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1;
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
static String enemyHistory = ""
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
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+ (char) 7 + (char) 6 + (char) 5 + (char) 4
+ (char) 3 + (char) 2 + (char) 1 + (char) 1;
}Version 1.0.0
/*
Yatagan 1.0.0 by Sheldor & Skilgannon
The yatagan is a short sabre which was used extensively in the Ottoman Empire.
Credits:
Pattern Matching code from simonton.WeekendObsession_S and mld.Moebius, heavily modified,
and a general thanks to all open source bot authors and contributors to the RoboWiki.
Yatagan is open source and released under the terms of the RoboWiki Public Code License (RWPCL) - Version 1.1
see license here: http://robowiki.net/wiki/RWPCL
*/
package sheldor.jk;
import robocode.*;
import robocode.util.Utils;
public class Yatagan extends AdvancedRobot
{
//Global variables.
static double direction;
static double enemyEnergy;
static int deathCount;
//En garde!
public void run()
{
// setAdjustGunForRobotTurn(true);
//Start spinning radar and initialize direction to infinity.
setTurnRadarRightRadians(direction = Double.POSITIVE_INFINITY);
}
public void onScannedRobot(ScannedRobotEvent e)
{
//Local variables.
int integer = 30;
double absoluteBearing;
double distance;
int matchPosition;
//Oscillating/Random movement.
if( (char) ((enemyEnergy - 1.0999 - (enemyEnergy = e.getEnergy()))) < 2)
{
direction *= (chancesOfReversing.charAt(deathCount) - 3*Math.random());
}
setAhead(direction);
//Stay perpendicular to the enemy.
setTurnRightRadians(Math.cos(absoluteBearing = e.getBearingRadians()) + ((160.0 - (distance = e.getDistance())) * (getVelocity() *4e-4)));
//Pattern Matching.
enemyHistory = String.valueOf((char) (e.getVelocity() * (Math.sin(e.getHeadingRadians() - (absoluteBearing += getHeadingRadians()))))).concat(enemyHistory);
// search for a match
while((matchPosition = enemyHistory.indexOf(enemyHistory.substring(0, integer--), 64)) < 0);
integer = (int)(distance);
// calculate aim offset
do {
absoluteBearing += ((short) enemyHistory.charAt(--matchPosition)) / distance;
} while ((integer -= 12) > 0);
//Aim at the predicted target.
setTurnGunRightRadians(Utils.normalRelativeAngle(absoluteBearing - getGunHeadingRadians()));
//Fire!
setFire(2.6666666666666666666666666666);
//Infinite radar lock.
setTurnRadarLeftRadians(getRadarTurnRemainingRadians());
}
public void onDeath(DeathEvent e)
{
deathCount++;
}
public void onHitWall(HitWallEvent e)
{
//Reverse direction when the bot hits a wall.
direction = -direction;
}
//chance out of 3 for given number of deaths, 'final' saves a few bytes
private static final String chancesOfReversing = ""
+ (char) 3 + (char) 0 + (char) 3 + (char) 0
+ (char) 3 + (char) 0 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
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+ (char) 1 + (char) 1 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1;
//Preloaded log of enemy movements for pattern matcher so it doesn't need error checking
static String enemyHistory = ""
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
+ (char) 1 + (char) 1 + (char) 1 + (char) 1
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+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 8 + (char) 8 + (char) 8 + (char) 8
+ (char) 7 + (char) 6 + (char) 5 + (char) 4
+ (char) 3 + (char) 2 + (char) 1 + (char) 1;
}
