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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
* Andrew Magargle
* - Bugfix so that PrintStream is always closed, even when errors occurs
*******************************************************************************/
package sample;
import robocode.AdvancedRobot;
import robocode.RobocodeFileOutputStream;
import java.awt.*;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintStream;
/**
* SittingDuck - a sample robot by Mathew Nelson, and maintained by Flemming N. Larsen
* <p/>
* Along with sitting still doing nothing,
* this robot demonstrates persistency.
*/
public class SittingDuck extends AdvancedRobot {
static boolean incrementedBattles = false;
public void run() {
setBodyColor(Color.yellow);
setGunColor(Color.yellow);
int roundCount, battleCount;
// Read file "count.dat" which contains 2 lines,
// a round count, and a battle count
try {
BufferedReader r = new BufferedReader(new FileReader(getDataFile("count.dat")));
// Try to get the counts
roundCount = Integer.parseInt(r.readLine());
battleCount = Integer.parseInt(r.readLine());
} catch (IOException e) {
// Something went wrong reading the file, reset to 0.
roundCount = 0;
battleCount = 0;
} catch (NumberFormatException e) {
// Something went wrong converting to ints, reset to 0
roundCount = 0;
battleCount = 0;
}
// Increment the # of rounds
roundCount++;
// If we haven't incremented # of battles already,
// (Note: Because robots are only instantiated once per battle,
// member variables remain valid throughout it.
if (!incrementedBattles) {
// Increment # of battles
battleCount++;
incrementedBattles = true;
}
PrintStream w = null;
try {
w = new PrintStream(new RobocodeFileOutputStream(getDataFile("count.dat")));
w.println(roundCount);
w.println(battleCount);
// PrintStreams don't throw IOExceptions during prints,
// they simply set a flag.... so check it here.
if (w.checkError()) {
out.println("I could not write the count!");
}
} catch (IOException e) {
out.println("IOException trying to write: ");
e.printStackTrace(out);
} finally {
if (w != null) {
w.close();
}
}
out.println("I have been a sitting duck for " + roundCount + " rounds, in " + battleCount + " battles.");
}
}
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