RednaxelaBot: Using .

2010-07-01T08:36:45Z

Using <syntaxhighlight>.

AaronR: I've made a bunch of these, so I figured I'd start a page

2009-08-15T10:31:29Z

I've made a bunch of these, so I figured I'd start a page

New page

Sometimes, you write a bot whose only purpose in life is to test some tiny little detail of another bot's implementation. Some of the [[sample bots]] that come with Robocode fit into this category; for example, [[Walls (robot)|Walls]] is well known as a sanity check for movement (tests avoidance of [[GuessFactor]] 0.0) and targeting (tests hitting GF 1.0).

Here are some other bots like this.

== WallsReverser ==
WallsReverser is a bot that can be used for finding bugs in [[lateral velocity]] calculations in targeting systems. For the first five rounds, it moves like the sample bot Walls; on the sixth round, it switches to moving in the opposite direction. This bot helped to find a bug in [[Horizon]]'s gun.

<pre>
import java.awt.Color;
import robocode.*;

public class WallsReverser extends Robot {
public void run() {
if (getRoundNum() < 5) {
// Set colors
setBodyColor(Color.black);
setGunColor(Color.black);
setRadarColor(Color.orange);
setBulletColor(Color.cyan);
setScanColor(Color.cyan);
} else {
// These are the opposite colors. Clever, huh?
setBodyColor(Color.white);
setGunColor(Color.white);
setRadarColor(Color.blue);
setBulletColor(Color.magenta);
setScanColor(Color.magenta);
}

// turnLeft to face a wall.
// getHeading() % 90 means the remainder of
// getHeading() divided by 90.
turnLeft(getHeading() % 90);

while (true) {
// Move up the wall
ahead(Double.POSITIVE_INFINITY);
// Turn to the next wall
if (getRoundNum() < 5) {
turnRight(90);
} else {
turnLeft(90);
}
}
}
}
</pre>

== SelfDisablingBot ==
Many robots have a special case for dealing with [[disabled]] opponents. This is important, because a gun that ignores the fact that the opponent is disabled could assume that it will continue acting normally and ''miss'', or worse yet, record data based on the opponent being a [[sitting duck]]. This utility bot tests your bot's reaction to a disabled opponent.

<pre>
import robocode.*;

public class SelfDisablingBot extends AdvancedRobot {
@Override
public void run() {
setTurnRadarRightRadians(Double.POSITIVE_INFINITY);
}

@Override
public void onScannedRobot(ScannedRobotEvent e) {
// Generic random movement.
setAhead((Math.random() - 0.5) * 200);
setTurnRightRadians((Math.random() - 0.5) * 2);
}

@Override
public void onStatus(StatusEvent e) {
if (e.getTime() > 100) {
// Stupid self disabling trick.
while (true) {
getX();
}
}
}
}
</pre>

@@ Line 7: / Line 7: @@
 WallsReverser is a bot that can be used for finding bugs in [[lateral velocity]] calculations in targeting systems. For the first five rounds, it moves like the sample bot Walls; on the sixth round, it switches to moving in the opposite direction. This bot helped to find a bug in [[Horizon]]'s gun.
-<pre>
+<syntaxhighlight>
 import java.awt.Color;
 import robocode.*;
@@ Line 46: / Line 46: @@
+	}
+}
-</pre>
+</syntaxhighlight>
@@ Line 52: / Line 52: @@
 Many robots have a special case for dealing with [[disabled]] opponents. This is important, because a gun that ignores the fact that the opponent is disabled could assume that it will continue acting normally and ''miss'', or worse yet, record data based on the opponent being a [[sitting duck]]. This utility bot tests your bot's reaction to a disabled opponent.
-<pre>
+<syntaxhighlight>
 import robocode.*;
@@ Line 78: / Line 78: @@
+	}
+}
-</pre>
+</syntaxhighlight>

User:AaronR/Utility Bots - Revision history

RednaxelaBot: Using .

AaronR: I've made a bunch of these, so I figured I'd start a page