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/*******************************************************************************
* Copyright (c) 2001, 2008 Mathew A. Nelson and Robocode contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://robocode.sourceforge.net/license/cpl-v10.html
*
* Contributors:
* Mathew A. Nelson
* - Initial implementation
* Flemming N. Larsen
* - Maintainance
*******************************************************************************/
package sample;
import robocode.DeathEvent;
import robocode.Robot;
import robocode.ScannedRobotEvent;
import static robocode.util.Utils.normalRelativeAngleDegrees;
import java.awt.*;
/**
* Corners - a sample robot by Mathew Nelson, and maintained by Flemming N. Larsen
* <p/>
* This robot moves to a corner, then swings the gun back and forth.
* If it dies, it tries a new corner in the next round.
*/
public class Corners extends Robot {
int others; // Number of other robots in the game
static int corner = 0; // Which corner we are currently using
// static so that it keeps it between rounds.
boolean stopWhenSeeRobot = false; // See goCorner()
/**
* run: Corners' main run function.
*/
public void run() {
// Set colors
setBodyColor(Color.red);
setGunColor(Color.black);
setRadarColor(Color.yellow);
setBulletColor(Color.green);
setScanColor(Color.green);
// Save # of other bots
others = getOthers();
// Move to a corner
goCorner();
// Initialize gun turn speed to 3
int gunIncrement = 3;
// Spin gun back and forth
while (true) {
for (int i = 0; i < 30; i++) {
turnGunLeft(gunIncrement);
}
gunIncrement *= -1;
}
}
/**
* goCorner: A very inefficient way to get to a corner. Can you do better?
*/
public void goCorner() {
// We don't want to stop when we're just turning...
stopWhenSeeRobot = false;
// turn to face the wall to the "right" of our desired corner.
turnRight(normalRelativeAngleDegrees(corner - getHeading()));
// Ok, now we don't want to crash into any robot in our way...
stopWhenSeeRobot = true;
// Move to that wall
ahead(5000);
// Turn to face the corner
turnLeft(90);
// Move to the corner
ahead(5000);
// Turn gun to starting point
turnGunLeft(90);
}
/**
* onScannedRobot: Stop and fire!
*/
public void onScannedRobot(ScannedRobotEvent e) {
// Should we stop, or just fire?
if (stopWhenSeeRobot) {
// Stop everything! You can safely call stop multiple times.
stop();
// Call our custom firing method
smartFire(e.getDistance());
// Look for another robot.
// NOTE: If you call scan() inside onScannedRobot, and it sees a robot,
// the game will interrupt the event handler and start it over
scan();
// We won't get here if we saw another robot.
// Okay, we didn't see another robot... start moving or turning again.
resume();
} else {
smartFire(e.getDistance());
}
}
/**
* smartFire: Custom fire method that determines firepower based on distance.
*
* @param robotDistance the distance to the robot to fire at
*/
public void smartFire(double robotDistance) {
if (robotDistance > 200 || getEnergy() < 15) {
fire(1);
} else if (robotDistance > 50) {
fire(2);
} else {
fire(3);
}
}
/**
* onDeath: We died. Decide whether to try a different corner next game.
*/
public void onDeath(DeathEvent e) {
// Well, others should never be 0, but better safe than sorry.
if (others == 0) {
return;
}
// If 75% of the robots are still alive when we die, we'll switch corners.
if ((others - getOthers()) / (double) others < .75) {
corner += 90;
if (corner == 270) {
corner = -90;
}
out.println("I died and did poorly... switching corner to " + corner);
} else {
out.println("I died but did well. I will still use corner " + corner);
}
}
}
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