Difference between revisions of "Ocnirp/Source Code"
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Latest revision as of 09:30, 1 July 2010
- Ocnirp Sub-pages:
- Ocnirp - Version History - Source Code
package nat.nano;
import robocode.AdvancedRobot;
import robocode.HitWallEvent;
import robocode.ScannedRobotEvent;
import robocode.util.Utils;
/**
* Ocnirp - a robot by Nat Pavasant
*
* "Battle for the one-on-one nano-bot crown!"
*
* @version 1.4
* @author Nat Pavasant
*/
public final class Ocnirp extends AdvancedRobot {
package nat.nano;
import robocode.AdvancedRobot;
import robocode.HitWallEvent;
import robocode.ScannedRobotEvent;
import robocode.util.Utils;
/**
* Ocnirp - a robot by Nat Pavasant
*
* "Battle for the one-on-one nano-bot crown!"
*
* @version 1.61
* @author Nat Pavasant
*/
@SuppressWarnings("unused")
public final class Ocnirp extends AdvancedRobot {
/**
* Size of pattern to match. 45 is the maximum value or robot will skip a
* turn in unacceptable rate. 30 is a standard value.
*/
private static final int PATTERN_DEPTH = 30;
/**
* If Math.random() exceed this number, the robot will change the direction.
*/
private static final double CHANGE_INTERVAL = 0.92;
/**
* Preferred distance between this robot and enemy.
*/
private static final double PREFERRED_DISTANCE = 180d;
/**
* Fire power, it used to be 2.5, but my crazy part of my brain told me to
* reduce this a bit.
*/
private static final double FIRE_POWER = 2.4433565d;
/**
* Bullet velocity. It should be {@code 20 - 3 * FIRE_POWER}, but my crazy
* part of my brain told me to leave this 12.5
*/
private static final double BULLET_VELOCITY = 12.5d;
/**
* Distance offset to turn
*/
private static final double DISTANCE_OFFSET = 0.38435d;
/**
* Distance offset to turn
*/
private static final double DISTANCE_CONTROLLER = 237.5;
/**
* Velocity trick multiplier, make this higher will make more change that
* robot will move at max velocity
*/
private static final double VELOCITY_MULTIPILER = 17.78456345d;
/**
* Hard-coded bullet fight time make a code much smaller since my distance
* controller control all the distance.
*/
private static final int BFT = (int) (PREFERRED_DISTANCE / BULLET_VELOCITY + 2);
/**
* A static variable to keep which direction it is moving.
*/
private static int dir = 100;
/**
* Main robot method. For nanobot, this contains only radar control.
*/
public void run() {
/*
* Performance Enhancing Bug! Have this cost 10 bytes and make me lose
* score.
*/
setAdjustGunForRobotTurn(true);
// setAdjustRadarForGunTurn(true);
turnRadarRightRadians(Double.POSITIVE_INFINITY);
}
/**
* What to do when you see another robot.
*
* Main robot operation method for almost all nano/micro/mini robots.
*/
public void onScannedRobot(ScannedRobotEvent e) {
/*
* Variable order here is important. We can save ~3-4 bytes here. since
* all math operation must be done on registers. Java virtual machine
* has 4 register slot. First register will be taken by {@code this}
* object. Then each parameters will take the rest of registers. If
* there are any registers left, the variables defined in the method is
* filled the register until it full. Every type will take 1 registers
* except double, which take 2. If double is the fourth variable
* defined, it will overflow to the extra fifth register.
*
* So, the most
* used variable should define first, which will be enemy absolute
* bearing in most cases. In this case, we define most used int before
* and make double overflow its register.
*/
int matchLen = PATTERN_DEPTH; // PM Stuff
double angle; // enemy absolute bearing
double dist; // enemy distance
int matchPos; // PM Stuff
// ///////////////////////////////////////////////////////////////////////////////
// Radar
//
// Do infinity lock
setTurnRadarLeftRadians(getRadarTurnRemaining());
// ///////////////////////////////////////////////////////////////////////////////
// ///////////////////////////////////////////////////////////////////////////////
// Movement (Perpendicular and Random with distance control)
//
// Turn perpendicular to an enemy, and add/deduct the angle a bit to
// control the distance
//
// setTurnRightRadians(
// Math.cos(angle = e.getBearingRadians())
// - Math.signum(
// getVelocity() * ((dist = e.getDistance()) - PREFERRED_DISTANCE)
// ) * DISTANCE_OFFSET);
// setTurnRightRadians(Math.cos(
// (angle = e.getBearingRadians())
// - ((dist = e.getDistance()) - PREFERRED_DISTANCE)
// * getVelocity() / DISTANCE_CONTROLLER
// ));
// No distance controller
setTurnRightRadians(Math.cos(angle = e.getBearingRadians()));
//
// Move ahead
//
setAhead(dir);
//
// If random() exceed the change interval
//
if (Math.random() > CHANGE_INTERVAL) {
//
// Reverse direction
// Optimize to
//
onHitWall(null);
//
// Velocity trick
//setMaxVelocity(Math.random() * VELOCITY_MULTIPILER + 1);
//
}
//
// ///////////////////////////////////////////////////////////////////////////////
// ///////////////////////////////////////////////////////////////////////////////
// Eric Simonton's Lateral Velocity Pattern Matching Gun
//
// Define counter
//
int i;
//
// Append enemy log
//
enemyHistory = String.valueOf(
(char) Math.round( 2 * (e.getVelocity() * Math.sin(e
.getHeadingRadians()
- (angle += getHeadingRadians()))))).concat(
enemyHistory);
//
// Match the history
//
while ((matchPos = enemyHistory.indexOf(enemyHistory.substring(0,
matchLen--), i = (int) (((dist = e.getDistance()) / 12.5D) - 1))) < 0)
;
//
// Get the firing angle
//
do
angle +=
Math.asin
((short) enemyHistory.charAt(--matchPos) / dist
/ 2d );
while (--i > 0);
//
// Turn the gun
//
setTurnGunRightRadians(Utils.normalRelativeAngle(angle
- getGunHeadingRadians()));
//
// Fire
//
//if (dist < 100) setFire(3d);
//else
setFire(FIRE_POWER);
//
// ///////////////////////////////////////////////////////////////////////////////
}
/**
* When hit wall, reverse direction
*/
public void onHitWall(HitWallEvent e) {
dir = -dir;
}
/**
* Enemy history string. Preload to prevent StringIndexOutOfBoundException.
*/
private static String enemyHistory = "" + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 1 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
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+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
+ (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0 + (char) 0
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+ (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) 0 + (char) 2
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+ (char) 2 + (char) 1 + (char) 0;
}
