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Seth Morabito 2012-05-28 19:22:30 -07:00
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GNU GENERAL PUBLIC LICENSE
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Automata Explorer
=================
Autaomata Explorer was a weekend project of mine after a brief but
passionate interest in cellular automata back in 2003. This project
should therefore _not_ be looked at as an example of my most recent
(or best) work. Nevertheless, I am preserving it here on Github for
historical interest and pure vanity!
These days, if you're interested in a much, much better Cellular
Automata explorer, I would recommend Golly (http://golly.sourceforge.net/)
Building Automata
-----------------
Automata uses the Ant Java build system. To build a JAR file, just type:
% ant
To build a full release, including a versioned ZIP file, type:
% ant release
Building on OS X
----------------
On OS X, this project uses the JarBundler ant task (another weekend
project of mine) to create an executable Java bundle. Type:
% ant release-macosx
Running Automata Explorer
-------------------------
Automata requires the Java Runtime version 1.3 or later.
To run by hand from the command line, just type
UNIX or OS X:
% java -jar bin/automata.jar
WINDOWS
> java -jar BIN\automata.jar
Mac OS X releases will produce a double-clickable bundle, as well.
License
-------
Copyright (c) 2012, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA.

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<project name="Automata" default="build-all" basedir=".">
<property name="id" value="$Id: build.xml,v 1.16 2003/10/13 04:05:41 sethm Exp $"/>
<property name="version" value="1.2.4"/>
<property name="appname" value="automata"/>
<property name="dir.classes" value="${basedir}/classes" />
<property name="dir.release" value="${basedir}/release" />
<property name="dir.resources" value="${basedir}/resources" />
<property name="dir.bin" value="${basedir}/bin" />
<property name="dir.src" value="${basedir}/src" />
<property name="dir.doc" value="${basedir}/javadoc" />
<property name="dir.lib" value="${basedir}/lib" />
<property name="main.class" value="com.loomcom.automata.Launcher" />
<property name="lib.jarbundler" value="${dir.lib}/jarbundler-2.2.0.jar" />
<property name="jar" value="${appname}.jar" />
<property name="zip" value="${appname}-${version}.zip" />
<property name="tar" value="${appname}-${version}.tar" />
<taskdef name="jarbundler"
classpath="${lib.jarbundler}"
classname="net.sourceforge.jarbundler.JarBundler"/>
<target name="jar" depends="compile">
<jar jarfile="${dir.bin}/${jar}"
basedir="${dir.classes}">
<manifest>
<attribute name="Main-Class" value="${main.class}" />
</manifest>
</jar>
</target>
<target name="compile">
<mkdir dir="${dir.classes}"/>
<mkdir dir="${dir.bin}"/>
<javac srcdir="${dir.src}"
destdir="${dir.classes}"/>
</target>
<target name="javadoc">
<javadoc destdir="${dir.doc}"
author="true"
version="true"
use="true"
windowtitle="Automata">
<packageset dir="${dir.src}" defaultexcludes="yes">
<include name="com/loomcom/automata/**" />
<exclude name="CVS" />
</packageset>
</javadoc>
</target>
<target name="release" depends="build-all">
<mkdir dir="${dir.release}"/>
<zip destfile="${dir.release}/${zip}">
<zipfileset dir="${basedir}"
prefix="${appname}-${version}/"
includes="LICENSE.TXT,README.TXT,build.xml,src/**,javadoc/**,bin/**,lib/**"/>
</zip>
<tar destfile="${dir.release}/${tar}">
<tarfileset dir="${basedir}"
prefix="${appname}-${version}/"
includes="LICENSE.TXT,README.TXT,build.xml,src/**,javadoc/**,bin/**,lib/**"/>
</tar>
<!-- Compress the tar -->
<gzip src="${dir.release}/${tar}" zipfile="${dir.release}/${tar}.gz"/>
<!-- Remove the old tar, leave the gzip file -->
<delete file="${dir.release}/${tar}" quiet="true" />
</target>
<!-- Create a Mac OS X application bundle. This will not work on
a non-MacOS X platform. -->
<target name="release-macosx" depends="release">
<jarbundler dir="${dir.release}"
name="Automata ${version}"
jars="${dir.bin}/${jar}"
mainclass="com.loomcom.automata.Launcher"
icon="${dir.resources}/automata.icns"
version="${version}"
infostring="Automata ${version}"
jvmversion="1.4+"
smalltabs="true"
antialiasedgraphics="false"
antialiasedtext="false"
liveresize="false"
growboxintrudes="false"
screenmenu="true" />
</target>
<target name="clean">
<delete includeEmptyDirs="true" quiet="true">
<fileset dir="${basedir}" includes="**/.DS_Store"/>
<fileset dir="${dir.doc}" includes="**" />
<fileset dir="${dir.release}" includes="**" />
<fileset dir="${dir.classes}" includes="**" />
<fileset dir="${dir.bin}" includes="*.jar" />
</delete>
</target>
<target name="build-all" depends="jar,javadoc">
</target>
</project>

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
* Information about the application. A standard "About" box, to stroke ego.
*
* @author Seth Morabito
* @version $Id: AboutDialog.java,v 1.11 2003/10/04 00:37:59 sethm Exp $
*/
public class AboutDialog extends JFrame {
private static String dateString = "October 3, 2003";
private static String versionString = "1.2.4";
/**
* Construct an About Box frame.
*/
public AboutDialog() {
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
JPanel infoPanel = new JPanel();
infoPanel.setBorder(BorderFactory.createEmptyBorder(18,18,18,18));
infoPanel.setLayout(new BoxLayout(infoPanel, BoxLayout.Y_AXIS));
Font largeFont = new Font("SansSerif", Font.BOLD, 18);
Font midFont = new Font("SansSerif", Font.BOLD, 14);
Font textFont = new Font("SansSerif", Font.PLAIN, 14);
Font smallFont = new Font("SansSerif", Font.PLAIN, 10);
JLabel nameLabel = new JLabel("Cellular Automata Explorer");
nameLabel.setFont(largeFont);
nameLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
JLabel authorLabel = new JLabel("Seth Morabito");
authorLabel.setFont(midFont);
authorLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
JLabel companyLabel = new JLabel("Loom Communications");
companyLabel.setFont(textFont);
companyLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
JLabel urlLabel = new JLabel("http://www.loomcom.com/");
urlLabel.setFont(textFont);
urlLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
JLabel versionLabel = new JLabel("Version " + versionString);
versionLabel.setFont(smallFont);
versionLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
JLabel dateLabel = new JLabel(dateString);
dateLabel.setFont(smallFont);
dateLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
JTextArea license =
new JTextArea("Distributed under the terms of the GNU\n" +
"Public License. For details, see the file\n" +
"LICENSE.TXT, or http://www.gnu.org/licenses/gpl.html");
license.setFont(smallFont);
license.setEditable(false);
license.setBackground(getBackground());
license.setAlignmentX(Component.LEFT_ALIGNMENT);
infoPanel.add(nameLabel);
infoPanel.add(Box.createRigidArea(new Dimension(0,10)));
infoPanel.add(authorLabel);
infoPanel.add(companyLabel);
infoPanel.add(urlLabel);
infoPanel.add(versionLabel);
infoPanel.add(dateLabel);
infoPanel.add(Box.createRigidArea(new Dimension(0,10)));
infoPanel.add(license);
JButton okButton = new JButton("OK");
okButton.setSelected(true);
okButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
dispose();
}
});
JPanel buttonBar = new JPanel();
buttonBar.setLayout(new FlowLayout(FlowLayout.CENTER));
buttonBar.add(okButton);
getContentPane().add(infoPanel, BorderLayout.CENTER);
getContentPane().add(buttonBar, BorderLayout.SOUTH);
setResizable(false);
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
/**
* The main Cellular Automata application window.
*
* @author Seth Morabito
* @version $Id: AutomataFrame.java,v 1.14 2003/10/13 04:00:23 sethm Exp $
*/
public class AutomataFrame extends JFrame implements Observer {
// Constants
private static final String FRAME_TITLE = "Automata";
// Pseudo-Constants defined during initialization
private String DEFAULT_SPEED;
private JRadioButtonMenuItem DEFAULT_RULESET;
private JRadioButtonMenuItem DEFAULT_SHAPE;
// The size of our cells, in pixels
int mCellSize;
// Thread which will update the Cell Panel
private UpdateThread mUpdateThread;
// The shape we want to draw, or null for no shape.
private boolean[][] mDrawGlider;
// Cell panel mouse and mousemotion listener
private CellSelectListener mCellSelectListener;
// The cell data model
private CellModel mCellModel;
// Components
private CellPanel mCellPanel;
private ColorChooserDialog mColorChooser;
private AboutDialog mAboutDialog;
private JLabel mGenerationCountLabel;
private JButton mStepButton;
private JToggleButton mStartStopButton;
private JComboBox mSpeedSelector;
// The menu bar and associated menu items
private JMenuBar mMenuBar;
private JMenu mFileMenu;
private JMenuItem mAboutMenuItem;
private JMenuItem mNewAutomataMenuItem;
private JMenuItem mQuitMenuItem;
private JMenu mDrawMenu;
private JCheckBoxMenuItem mShowOutlinesMenuItem;
private JMenuItem mEditColorsMenuItem;
private JCheckBoxMenuItem mShowAgingMenuItem;
private JMenuItem mResetMenuItem;
private JMenu mGliderSubMenu;
private ButtonGroup mGliderButtonGroup;
private JMenu mRulesMenu;
private ButtonGroup mRulesButtonGroup;
// Containers associated with the menu items
private TreeMap mGliderMap;
private TreeMap mRulesMap;
// UI layout containers
private JPanel mCellPanelContainer;
private JPanel mButtonContainer;
private JPanel mUIButtons;
private JPanel mStatusContainer;
/**
* Construct a new frame to hold our automata simulation.
* Just a pass-through to setupUI() at the moment.
*/
public AutomataFrame() {
setupUI();
}
/**
* Add a new cell panel to the main app window.
*/
public void addCells(int cols, int rows, int cellSize) {
mCellSize = cellSize;
mCellModel = new CellModel(cols, rows);
mCellModel.addObserver(this);
// Remove any existing cell panel
if (mCellPanel != null) {
mCellPanelContainer.remove(mCellPanel);
}
mCellPanel = new CellPanel(mCellModel, cellSize);
mCellSelectListener = new CellSelectListener();
mCellPanel.addMouseListener(mCellSelectListener);
mCellPanel.addMouseMotionListener(mCellSelectListener);
mCellPanelContainer.add(mCellPanel);
mUpdateThread = new UpdateThread(mCellModel);
// set initial conditions
setDefaults();
// Register with the color chooser
if (mColorChooser != null) {
mColorChooser.setCellPanel(mCellPanel);
}
// Start the thread which updates the cell model.
mUpdateThread.start();
}
/**
* Remove the current cell panel from the main app window.
*/
public void removeCells() {
mCellSize = 0;
if (mUpdateThread != null) {
mUpdateThread.doStop();
}
if (mCellPanelContainer != null) {
mCellPanelContainer.remove(mCellPanel);
}
if (mCellPanel != null) {
mCellPanel.removeMouseListener(mCellSelectListener);
mCellPanel.removeMouseMotionListener(mCellSelectListener);
}
mCellModel = null;
mCellSelectListener = null;
mCellPanel = null;
}
/**
* Each time a new cell panel is added, reset the UI
* widgets to default values.
*/
private void setDefaults() {
// Make sure the Start/Stop button is reset
stopCellUpdates();
if (mCellSize > 3) {
mShowOutlinesMenuItem.setSelected(true);
mCellPanel.showCellOutlines(true);
} else {
mShowOutlinesMenuItem.setSelected(false);
mShowOutlinesMenuItem.setEnabled(false);
mCellPanel.showCellOutlines(false);
}
mSpeedSelector.setSelectedItem(DEFAULT_SPEED);
// Programatically select the default ruleset
DEFAULT_RULESET.setSelected(true);
DEFAULT_RULESET.doClick();
// Programatically select the default ruleset
DEFAULT_SHAPE.setSelected(true);
DEFAULT_SHAPE.doClick();
mGenerationCountLabel.setText("0");
mShowAgingMenuItem.setSelected(true);
mCellPanel.setCellAging(true);
}
/**
* Implementation of the Observer interface.
*/
public void update(Observable t, Object o) {
mGenerationCountLabel.setText(
Integer.toString(mCellModel.getGeneration()));
}
/**
* Attempt to cleanly shut down the application in a polite way.
*/
private void shutdown() {
if (mUpdateThread != null) {
try {
// Offer a short window to politely join with
// the thread before shutting down, good manners
mUpdateThread.doStop();
mUpdateThread.join(500);
} catch (InterruptedException ex) {
;
}
}
System.exit(0);
}
/**
* Lay out the UI.
*/
private void setupUI() {
setTitle(FRAME_TITLE);
// Components
JComboBox speedComboBox;
JCheckBox cellOutlineSelector;
JLabel cellTypeLabel;
JLabel speedLabel;
// The main menu bar.
mMenuBar = new JMenuBar();
int menuKeyMask =
java.awt.Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
/*
* The "File" Menu
*/
mFileMenu = new JMenu("File");
mFileMenu.setMnemonic(KeyEvent.VK_F);
mAboutMenuItem = new JMenuItem("About");
mAboutMenuItem.setMnemonic(KeyEvent.VK_A);
mAboutMenuItem.addActionListener(new AboutListener());
mNewAutomataMenuItem = new JMenuItem("New Automata...");
mNewAutomataMenuItem.setMnemonic(KeyEvent.VK_N);
mNewAutomataMenuItem.addActionListener(new NewAutomataListener());
mQuitMenuItem = new JMenuItem("Quit", KeyEvent.VK_Q);
mQuitMenuItem.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_Q, menuKeyMask));
mQuitMenuItem.addActionListener(new QuitListener());
// Assemble the menu
mFileMenu.add(mAboutMenuItem);
mFileMenu.add(mNewAutomataMenuItem);
mFileMenu.add(mQuitMenuItem);
/*
* The "Draw" Menu
*/
mDrawMenu = new JMenu("Draw");
mDrawMenu.setMnemonic(KeyEvent.VK_D);
// Show or hide cell outlines
mShowOutlinesMenuItem = new JCheckBoxMenuItem("Show Cell Outlines");
mShowOutlinesMenuItem.setMnemonic(KeyEvent.VK_O);
mShowOutlinesMenuItem.addItemListener(new ShowOutlinesListener());
// Enable or disable the showing of cell "age"
mShowAgingMenuItem = new JCheckBoxMenuItem("Show Cell Aging");
mShowAgingMenuItem.setMnemonic(KeyEvent.VK_A);
mShowAgingMenuItem.addItemListener(new ShowAgingListener());
// Set custom colors...
mEditColorsMenuItem = new JMenuItem("Edit Colors...");
mEditColorsMenuItem.setMnemonic(KeyEvent.VK_C);
mEditColorsMenuItem.addActionListener(new EditColorsListener());
// Clear the panel and reset...
mResetMenuItem = new JMenuItem("Clear Display");
mResetMenuItem.setMnemonic(KeyEvent.VK_L);
mResetMenuItem.addActionListener(new ResetPanelListener());
mGliderSubMenu = new JMenu("Draw Glider");
// A set of shapes we know how to draw...
mGliderButtonGroup = new ButtonGroup();
mGliderMap = setupGliders();
final String noGlider = "None";
ShapeMenuListener shapeMenuListener = new ShapeMenuListener(noGlider);
JRadioButtonMenuItem noGliderItem = new JRadioButtonMenuItem(noGlider);
DEFAULT_SHAPE = noGliderItem;
noGliderItem.addActionListener(shapeMenuListener);
mGliderButtonGroup.add(noGliderItem);
mGliderSubMenu.add(noGliderItem);
for (Iterator i = mGliderMap.keySet().iterator(); i.hasNext(); ) {
String s = (String) i.next();
JRadioButtonMenuItem item = new JRadioButtonMenuItem(s);
item.addActionListener(shapeMenuListener);
mGliderButtonGroup.add(item);
mGliderSubMenu.add(item);
}
// Populate the "Draw" menu
mDrawMenu.add(mShowOutlinesMenuItem);
mDrawMenu.add(mShowAgingMenuItem);
mDrawMenu.addSeparator();
mDrawMenu.add(mEditColorsMenuItem);
mDrawMenu.addSeparator();
mDrawMenu.add(mResetMenuItem);
mDrawMenu.addSeparator();
mDrawMenu.add(mGliderSubMenu);
/*
* The "Rules" Menu
*/
mRulesMap = setupRuleSets();
mRulesMenu = new JMenu("Rules");
mRulesButtonGroup = new ButtonGroup();
// Handle menu events from the Rules menu
RulesMenuListener rulesMenuListener = new RulesMenuListener();
// Populate the "Rules" menu
boolean first = true;
for (Iterator i = mRulesMap.keySet().iterator(); i.hasNext();) {
String s = (String) i.next();
JRadioButtonMenuItem item = new JRadioButtonMenuItem(s);
item.addActionListener(rulesMenuListener);
// We should automatically choose a rule set to start with.
// It should be either the first rule set on the menu, or "Life",
// if it is found.
if (first || "Life".equals(((RuleSet)mRulesMap.get(s)).getShortName())) {
DEFAULT_RULESET = item;
first = false;
}
mRulesButtonGroup.add(item);
mRulesMenu.add(item);
}
// Assembling the menu bar
mMenuBar.add(mFileMenu);
mMenuBar.add(mDrawMenu);
mMenuBar.add(mRulesMenu);
this.setJMenuBar(mMenuBar);
// The "Start/Pause" button
mStartStopButton = new JToggleButton("Start", false);
mStartStopButton.addItemListener(new StartButtonListener());
// Combo Box that determines the generation update speed
mSpeedSelector = new JComboBox();
mSpeedSelector.addItem("1");
mSpeedSelector.addItem("2");
mSpeedSelector.addItem("5");
mSpeedSelector.addItem("10");
mSpeedSelector.addItem("20");
// Set the default speed to be selected when creating a new
// automata cell panel.
DEFAULT_SPEED = "5";
mSpeedSelector.addActionListener(new SpeedSelectorListener());
// "Step" button
mStepButton = new JButton("Step");
mStepButton.addActionListener(new StepButtonListener());
// Container for the Cell Panel
mCellPanelContainer = new JPanel();
mCellPanelContainer.setLayout(new FlowLayout(FlowLayout.CENTER));
// mCellPanelContainer.add(mCellPanel);
// Container for UI buttons and status labels
mButtonContainer = new JPanel();
mUIButtons = new JPanel();
GridBagLayout gridBag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
mUIButtons.setLayout(gridBag);
c.fill = GridBagConstraints.HORIZONTAL;
speedLabel = new JLabel("Generations per second");
c.gridx = 0;
c.gridy = 0;
gridBag.setConstraints(speedLabel, c);
mUIButtons.add(speedLabel);
c.gridx = 0;
c.gridy = 1;
gridBag.setConstraints(mSpeedSelector, c);
mUIButtons.add(mSpeedSelector);
c.gridx = 1;
c.gridy = 1;
gridBag.setConstraints(mStartStopButton, c);
mUIButtons.add(mStartStopButton);
c.gridx = 2;
c.gridy = 1;
gridBag.setConstraints(mStepButton, c);
mUIButtons.add(mStepButton);
// Status label
mStatusContainer = new JPanel();
mGenerationCountLabel = new JLabel("0", JLabel.CENTER);
mGenerationCountLabel.setForeground(Color.red);
mStatusContainer.setLayout(new BorderLayout());
mStatusContainer.add(new JLabel("Generations"), BorderLayout.NORTH);
mStatusContainer.add(mGenerationCountLabel, BorderLayout.SOUTH);
mButtonContainer.add(mUIButtons, BorderLayout.WEST);
mButtonContainer.add(mStatusContainer, BorderLayout.EAST);
getContentPane().add(mCellPanelContainer, BorderLayout.CENTER);
getContentPane().add(mButtonContainer, BorderLayout.SOUTH);
}
/**
* Pause refreshing the cell generations.
*/
private void stopCellUpdates() {
if (mUpdateThread != null) {
mStepButton.setEnabled(true);
mStepButton.doClick();
}
}
/**
* Update one cell generation, then stop.
*/
private void stepCellUpdates() {
if (mCellPanel != null && mUpdateThread.isPaused()) {
mCellModel.transform();
}
}
/**
* A list of built-in shapes we can draw. Most of these are
* gliders in the Life rule set, as well as some others.
*
* @return A map of pattern names and arrays
*/
private TreeMap setupGliders() {
TreeMap gliderMap = new TreeMap();
// "The Glider"
gliderMap.put("The Glider", new boolean[][] {
{true, false, false}, // Row 1
{true, false, true}, // Row 2
{true, true, false} // Row 3
});
// A "Fountain" glider
gliderMap.put("Fountain", new boolean[][] {
{true, true, true, false, false, false},
{true, false, false, false, true, true},
{false, true, true, true, true, true},
{false, false, false, false, false, false},
{false, true, true, true, true, true},
{true, false, false, false, true, true},
{true, true, true, false, false, false}
});
// "The Coe Ship" glider
gliderMap.put("The Coe Ship", new boolean[][] {
{false, true, true, false, false, false, false, false, false, false},
{true, true, false, true, true, false, false, false, false, false},
{false, true, true, true, true, false, false, false, false, false},
{false, false, true, true, false, false, false, false, false, false},
{false, false, false, true, false, false, false, false, false, false},
{false, true, false, false, false, true, false, false, false, false},
{true, false, false, false, false, false, true, false, true, true},
{true, false, false, false, false, false, true, true, false, false},
{true, true, true, true, true, true, false, false, false, false},
});
// "Lightweight Spaceship" glider
gliderMap.put("Lightweight Spaceship", new boolean[][] {
{false, true, true, true},
{true, false, false, true},
{false, false, false, true},
{false, false, false, true},
{true, false, true, false}
});
// More, as time permits...
return gliderMap;
}
/**
* Populate the list of rule sets.
*
* NOTE: To add new rule sets to the application, list 'em here!
* Future versions will allow creation of new rule sets on the fly at
* through a nifty dialog.
*/
private TreeMap setupRuleSets() {
LinkedList rules = new LinkedList();
TreeMap rulesMap = new TreeMap();
// Start with the classic.
rules.add(new RuleSet("Life", new int[]{3}, new int[]{2,3}));
rules.add(new RuleSet("Amoeba", new int[]{3,5,7}, new int[]{1,3,5,8}));
rules.add(new RuleSet("Assimilation", new int[]{3,4,5},
new int[]{4,5,6,7}));
rules.add(new RuleSet("Bacteria", new int[]{3,4}, new int[]{4,5,6}));
rules.add(new RuleSet("Blinkers", new int[]{3,4,5}, new int[]{2}));
rules.add(new RuleSet("Blossom", new int[]{2,3}, new int[]{2,3}));
rules.add(new RuleSet("Bugs", new int[]{3,5,6,7},
new int[]{1,5,6,7,8}));
rules.add(new RuleSet("Coagulations", new int[]{3,7,8},
new int[]{2,3,5,6,7,8}));
rules.add(new RuleSet("Coral", new int[]{3},
new int[]{4,5,6,7,8}));
rules.add(new RuleSet("Day & Night", new int[]{3,6,7,8},
new int[]{3,4,6,7,8}));
rules.add(new RuleSet("Diamoeba", new int[]{3,5,6,7,8},
new int[]{5,6,7,8}));
rules.add(new RuleSet("Gnarl", new int[]{1}, new int[]{1}));
rules.add(new RuleSet("H-trees", new int[]{1},
new int[]{0,1,2,3,4,5,6,7,8}));
rules.add(new RuleSet("HighLife", new int[]{3,6}, new int[]{2,3}));
rules.add(new RuleSet("Holstein", new int[]{3,5,6,7,8},
new int[]{4,6,7,8}));
rules.add(new RuleSet("Iceballs", new int[]{2,5,6,7,8},
new int[]{5,6,7,8}));
rules.add(new RuleSet("Land Rush", new int[]{3,6},
new int[]{2,3,4,5,7,8}));
rules.add(new RuleSet("Life Without Death", new int[]{3},
new int[]{0,1,2,3,4,5,6,7,8}));
rules.add(new RuleSet("LongLife", new int[]{3,4,5}, new int[]{5}));
rules.add(new RuleSet("Majority", new int[]{4,5,6,7,8},
new int[]{5,6,7,8}));
rules.add(new RuleSet("Maze", new int[]{3}, new int[]{1,2,3,4,5}));
rules.add(new RuleSet("Move", new int[]{3,6,8}, new int[]{2,4,5}));
rules.add(new RuleSet("Pseudo Life", new int[]{3,5,7},
new int[]{2,3,8}));
rules.add(new RuleSet("Replicator", new int[]{1,3,5,7},
new int[]{1,3,5,7}));
rules.add(new RuleSet("Seeds", new int[]{2},
new int[]{}));
rules.add(new RuleSet("Serviettes", new int[]{2,3,4},
new int[]{}));
// Rulesets without nicknames
rules.add(new RuleSet(new int[]{2,4,8}, new int[]{2,4,8}));
rules.add(new RuleSet(new int[]{3,4,5}, new int[]{2,4,5}));
rules.add(new RuleSet(new int[]{3,4}, new int[]{2,5}));
rules.add(new RuleSet(new int[]{3,5}, new int[]{2,4}));
// "Probabilistic" rulesets
rules.add(new ChanceRuleSet("Randomized Life", new int[]{3},
new int[]{2,3},
99.0, 99.0));
for (Iterator i = rules.iterator(); i.hasNext(); ) {
RuleSet r = (RuleSet) i.next();
rulesMap.put(r.getName(), r);
}
return rulesMap;
}
/*
* Event Listener Implementations
*/
private final class StartButtonListener implements ItemListener {
public void itemStateChanged(ItemEvent evt) {
JToggleButton b = (JToggleButton) evt.getSource();
if (mUpdateThread != null) {
if (evt.getStateChange() == ItemEvent.SELECTED) {
mStartStopButton.setText("Pause");
mStepButton.setEnabled(false);
mUpdateThread.go();
} else {
mStartStopButton.setText("Start");
mStepButton.setEnabled(true);
mUpdateThread.pause();
}
}
}
}
private final class StepButtonListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
stepCellUpdates();
}
}
private final class SpeedSelectorListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
JComboBox source = (JComboBox) evt.getSource();
String s = (String) source.getSelectedItem();
int gps = Integer.valueOf(s).intValue();
if (gps > 0 && gps < 1000) {
mUpdateThread.setSleepInterval(1000 / gps);
}
}
}
private final class RulesMenuListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
String s = evt.getActionCommand();
RuleSet rs = (RuleSet) mRulesMap.get(s);
mCellModel.setRuleSet(rs);
}
}
private final class ShapeMenuListener implements ActionListener {
private final String noGlider;
private ShapeMenuListener(String noGlider) {
super();
this.noGlider = noGlider;
}
public void actionPerformed(ActionEvent evt) {
String s = evt.getActionCommand();
// Our special case is a single cell. If we're just
// drawing single cells, there's no need to set any
// glider shape.
if (noGlider.equals(s)) {
mDrawGlider = null;
return;
}
mDrawGlider = (boolean[][]) mGliderMap.get(s);
}
}
private final class ResetPanelListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
stopCellUpdates();
mCellModel.reset();
}
}
private final class EditColorsListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
if (mColorChooser == null) {
mColorChooser = new ColorChooserDialog(mCellPanel);
Utilities.centerWindow(mColorChooser);
}
mColorChooser.setVisible(true);
}
}
private final class ShowAgingListener implements ItemListener {
public void itemStateChanged(ItemEvent evt) {
if (evt.getStateChange() == ItemEvent.SELECTED) {
mCellPanel.setCellAging(true);
} else {
mCellPanel.setCellAging(false);
}
mCellPanel.repaint();
}
}
private final class ShowOutlinesListener implements ItemListener {
public void itemStateChanged(ItemEvent evt) {
if (evt.getStateChange() == ItemEvent.SELECTED) {
mCellPanel.showCellOutlines(true);
} else {
mCellPanel.showCellOutlines(false);
}
mCellPanel.repaint();
}
}
private final class QuitListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
shutdown();
}
}
private final class NewAutomataListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
// Hide ourselves...
setVisible(false);
// Remove our cells.
removeCells();
// Show the launcher.
Launcher launcher = Launcher.getLauncher();
launcher.setVisible(true);
}
}
private final class AboutListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
if (mAboutDialog == null) {
mAboutDialog = new AboutDialog();
mAboutDialog.pack();
}
Utilities.centerWindow(mAboutDialog);
mAboutDialog.setVisible(true);
}
}
/**
* Listen for mouse events in the Cell Panel.
*/
private final class CellSelectListener
implements MouseListener, MouseMotionListener {
int mLastCellX = 0;
int mLastCellY = 0;
// MouseListener implementations
/*
*Toggle the clicked-on cell
*/
public void mouseClicked(MouseEvent evt) {
CellPanel source = (CellPanel)evt.getSource();
int x = evt.getX();
int y = evt.getY();
int cellX = x / mCellSize;
int cellY = y / mCellSize;
if (mDrawGlider != null) {
mCellModel.drawShape(cellX, cellY, mDrawGlider);
} else {
mCellModel.flipCell(cellX, cellY);
}
}
public void mouseEntered(MouseEvent evt) {
}
public void mouseExited(MouseEvent evt) {
}
public void mousePressed(MouseEvent evt) {
}
public void mouseReleased(MouseEvent evt) {
}
// MouseMotionListener implementations
/*
* Allow primitive pattern drawing while dragging the mouse.
*/
public void mouseDragged(MouseEvent evt) {
int x = evt.getX();
int y = evt.getY();
int cellX = x / mCellSize;
int cellY = y / mCellSize;
boolean drawOrErase =
!((evt.getModifiers()
& (InputEvent.SHIFT_DOWN_MASK | InputEvent.SHIFT_MASK))
!= 0);
if (cellX != mLastCellX || cellY != mLastCellY) {
mCellModel.setCell(cellX, cellY, drawOrErase);
mLastCellX = cellX;
mLastCellY = cellY;
}
}
public void mouseMoved(MouseEvent evt) {
}
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
/**
* The data model representing the cells. This model represents the
* current state of all the "cells" (boolean bits) in the two-dimensional
* world.
*
* @author Seth Morabito
* @version $Id: CellModel.java,v 1.6 2003/07/09 23:32:49 sethm Exp $
*/
public class CellModel extends java.util.Observable {
private boolean[][] mCells; // The actual data.
private boolean[][] mTempCells; // Temp array used when transforming
private int[][] mCellAges; // Array of cell ages.
private int mCols; // Width of the cell array
private int mRows; // Height of the cell array
private RuleSet mRuleSet; // Rule set to use when transforming
private int mGeneration; // Current "generation"
/**
* Create a new two dimensional cell array with width <tt>x</tt>
* and height <tt>y</tt>.
*
* @param x The number of cell columns
* @param y The number of cell rows
*/
public CellModel(int x, int y) {
this(x, y, null);
}
/**
* Create a new two dimensional cell array with width <tt>x</tt>
* and height <tt>y</tt>, and set the initial rule set.
*
* @param x The number of cell columns
* @param y The number of cell rows
* @param rs The RuleSet to use at creation time
*/
public CellModel(int x, int y, RuleSet rs) {
mCells = new boolean[x][y];
mTempCells = new boolean[x][y];
mCellAges = new int[x][y];
mCols = x;
mRows = y;
mRuleSet = rs;
}
/**
* Return the boolean value of the cell at <tt>(x,y)</tt>
*
* @param x The cell <tt>x</tt> coordinate
* @param y The cell <tt>y</tt> coordinate
* @return True if the cell is alive, false if not
*/
public boolean getCell(int x, int y) {
if (x < 0 || y < 0 || x > (mCols - 1) || y > (mRows - 1))
return false;
return mCells[x][y];
}
/**
* Return the age, in generations, of the cell at <tt>(x,y)</tt>
*/
public int getCellAge(int x, int y) {
if (x < 0 || y < 0 || x > (mCols - 1) || y > (mRows - 1))
return 0;
return mCellAges[x][y];
}
/**
* Toggle the cell at <tt>(x,y)</tt>.
*
* @param x The cell <tt>x</tt> coordinate.
* @param y The cell <tt>y</tt> coordinate.
*/
public void flipCell(int x, int y) {
if (x < 0 || y < 0 || x > (mCols - 1) || y > (mRows - 1))
return;
mCells[x][y] = !mCells[x][y];
setChanged();
notifyObservers();
}
/**
* Set the cell at <tt>(x,y)</tt> with the supplied boolean value.
*
* @param x The cell <tt>x</tt> coordinate.
* @param y The cell <tt>y</tt> coordinate.
* @param b The value to set.
*/
public void setCell(int x, int y, boolean b) {
if (x < 0 || y < 0 || x > (mCols - 1) || y > (mRows - 1))
return;
mCells[x][y] = b;
setChanged();
notifyObservers();
}
/**
* Get the number of columns in this cell field.
*
* @return The number of columns.
*/
public int getCols() {
return mCols;
}
/**
* Get the number of rows in this cell field.
*
* @return The number of rows.
*/
public int getRows() {
return mRows;
}
/**
* Reset the field, clearing the data and setting the generation
* count back to 0.
*/
public void reset() {
for (int i = 0; i < mCols; i++) {
for (int j = 0; j < mRows; j++) {
mCells[i][j] = false;
mCellAges[i][j] = 0;
}
}
mGeneration = 0;
setChanged();
notifyObservers();
}
/**
* Return the current cell generation.
*
* @return Cell generation.
*/
public int getGeneration() {
return mGeneration;
}
/**
* Transform to the next generation of cells.
*/
public void transform() {
if (mRuleSet == null) { return; }
mRuleSet.transform(mCells, mTempCells);
for (int i = 0; i < mCols; i++) {
for (int j = 0; j < mRows; j++) {
if (mCells[i][j] & mTempCells[i][j])
mCellAges[i][j]++;
else
mCellAges[i][j] = 0;
}
}
// Swap the arrays, speedily
boolean[][] b = mCells;
mCells = mTempCells;
mTempCells = b;
b = null;
mGeneration++;
setChanged();
notifyObservers();
}
/**
* Set the RuleSet which will be used when transforming from one
* generation to the next.
*
* @param rs The RuleSet to use when transforming
*/
public void setRuleSet(RuleSet rs) {
mRuleSet = rs;
}
/**
* Return the current rule set used for transforms.
*
* @return The current rule set.
*/
public RuleSet getRuleSet() {
return mRuleSet;
}
/**
* Place a shape into the cell field, centered on point <tt>(x,y)</tt>
*
* @param pattern A 2D array of booleans representing the pattern bits.
*/
public void drawShape(int x, int y, boolean[][] pattern) {
int width = Utilities.getWidth(pattern);
int height = Utilities.getHeight(pattern);
// On the cell panel, the shape will begin at origin
// ((x - width / 2), (y - height / 2))
int originX = (x - width / 2);
int originY = (y - height / 2);
// Set the appropriate bits in the mCells array
int patternX = 0;
outer:
for (int i = originX; i < (originX + width) ; i++, patternX++) {
int patternY = 0;
for (int j = originY; j < (originY + height); j++, patternY++) {
if (i < 0 || i > mCols - 1)
continue;
if (j < 0 || j > mRows - 1)
continue outer;
if (pattern[patternX][patternY])
mCells[i][j] = true;
}
}
setChanged();
notifyObservers();
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
import java.awt.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;
/**
* The visual representation of a two dimensional field of cells. Cells which
* are alive are represented by a colored rectangle on a background field.
*
* @author Seth Morabito
* @version $Id: CellPanel.java,v 1.10 2003/10/03 23:41:03 sethm Exp $
*/
public class CellPanel extends JComponent implements Observer {
private int mCols;
private int mRows;
private int mCellSize;
private Color mOutlineColor; // Outline color
private CellModel mCellModel;
private boolean mShowCellOutlines = true; // Show outlines by default
private boolean mShowAging;
/**
* Construct a new CellPanel.
*
* @param model The cell model for this panel.
* @param cellSize The size of the cells, in pixels.
*/
public CellPanel(CellModel model, int cellSize) {
setDoubleBuffered(true);
mCellModel = model;
model.addObserver(this);
mCols = model.getCols();
mRows = model.getRows();
mCellSize = cellSize;
// Default colors
setForeground(Color.black);
setBackground(Color.white);
setOutline(Color.lightGray);
setSize(mCellSize * mCols, mCellSize * mRows);
setPreferredSize(new Dimension(mCellSize * mCols, mCellSize * mRows));
}
/**
* Set the cell outline color.
*
* @param c The color to use when drawing the cell outlines.
*/
public void setOutline(Color c) {
mOutlineColor = c;
}
/**
* Tell the panel whether to draw cell outlines or not.
*
* @param b True to show outlines, false otherwise.
*/
public void showCellOutlines(boolean b) {
this.mShowCellOutlines = b;
}
/**
* Overridden to remove the default update() behavior,
* which clears the component on each paint call.
*/
public void update(Graphics g) {
return; // do nothing
}
/**
* Implementation of the Observer interface.
*/
public void update(Observable t, Object o) {
repaint();
}
/**
* Produce a lighter version of this color. Not to be confused
* with the Color.brighen() method! This method will return a
* color with a higher alpha value based on the percent parameter.
*/
private Color lightenColor(Color c, int age) {
int red = c.getRed();
int green = c.getGreen();
int blue = c.getBlue();
int alpha = c.getAlpha();
double p = 1.0 - (0.05 * age);
if (p > 0.20) {
alpha = (int)(p * alpha);
} else {
alpha = (int)(0.20 * alpha);
}
return new Color(red, green, blue, alpha);
}
/**
* Draw the cell field.
*/
public void paint(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
int width = getSize().width;
int height = getSize().height;
// Clear the panel.
g2d.setPaint(getBackground());
g2d.fill(new Rectangle(0, 0, width, height));
g2d.setPaint(getForeground());
for (int i = 0; i < mCols; i++) {
for (int j = 0; j < mRows; j++) {
if (mCellModel.getCell(i, j)) {
// If cell aging is enabled, draw aged cells
int age = 0;
if (mShowAging) {
age = mCellModel.getCellAge(i, j);
g2d.setPaint(lightenColor(getForeground(), age));
}
g2d.fillRect(i * mCellSize,
j * mCellSize,
mCellSize,
mCellSize);
if (mShowAging) {
g2d.setPaint(getForeground());
}
}
}
}
// Show outlines if desired
if (mShowCellOutlines) {
drawCellOutlines(g2d);
}
}
/**
* Return the color used to draw the cell outlines.
*
* @return The color used to draw the cell outlines.
*/
public Color getOutline() {
return mOutlineColor;
}
/**
* Enable or disable the display of cell "aging"
*/
public void setCellAging(boolean b) {
mShowAging = b;
}
/**
* Draw a grid showing the outlines of the cells.
*/
private void drawCellOutlines(Graphics2D g2d) {
g2d.setPaint(mOutlineColor);
g2d.setStroke(new BasicStroke(1.0f));
int width = getSize().width;
int height = getSize().height;
// Draw rectangle outlining the entire component
g2d.draw(new Rectangle(0, 0, width - 1, height - 1));
// Draw the vertical lines
for (int i = 0; i < mCols; i++) {
g2d.drawLine(i * mCellSize, 0, i * mCellSize, height);
}
// Draw the horizontal lines
for (int j = 0; j < mRows; j++) {
g2d.drawLine(0, j * mCellSize, width, j * mCellSize);
}
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
/**
* A subclass of RuleSet which adds probability to the rules.
*
* Why? Because.
*
*
* @author Seth Morabito
* @version $Id: ChanceRuleSet.java,v 1.5 2003/07/09 23:32:49 sethm Exp $
*/
public class ChanceRuleSet extends RuleSet {
private double mBp; // "Birth" probability
private double mSp; // "Survival" probability
/**
*
* @param name The displayable name of this rule
* @param born Array of neighbors required for an empty cell to
* come to life.
* @param survive Array neighbors required for a living cell to
* survive.
* @param bp The probability, between 0.0 and 100.0, that new cell
* birth will succeed.
* @param sp The probability, between 0.0 and 100.0, that cell
* survival will succeed.
*/
public ChanceRuleSet(String name, int[] born, int[] survive,
double bp, double sp)
{
super(name, born, survive);
mBp = bp;
mSp = sp;
}
public ChanceRuleSet(int[] born, int[] survive,
double bp, double sp)
{
super(null, born, survive);
mBp = bp;
mSp = sp;
}
public void transform(boolean[][] from, boolean[][] to) {
if (from == null || to == null) { return; }
int cols = Utilities.getWidth(to);
int rows = Utilities.getHeight(to);
for (int i = 0; i < cols; i++) {
for (int j = 0; j < rows; j++) {
// Compute a value between 0.0 and 100.0
double chance = Math.random() * 100.0;
int count = Utilities.getNeighborCount(from, i, j);
boolean val = false;
if (!from[i][j]) {
// "Born" rules
for (int k = 0; k < mBornOn.length; k++) {
val |= (count == mBornOn[k] && chance <= mBp);
}
} else {
// "Survive" rules
for (int k = 0; k < mSurviveOn.length; k++) {
val |= (count == mSurviveOn[k] && chance <= mSp);
}
}
to[i][j] = val;
}
}
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
/**
* Color chooser dialog. This dialog allows the user to set colors for the
* cells, background, and outlines.
*
* @author Seth Morabito
* @version $Id: ColorChooserDialog.java,v 1.6 2003/08/23 21:09:15 sethm Exp $
*/
public class ColorChooserDialog extends JDialog {
private CellPanel mCellPanel;
private JColorChooser mColorChooser;
private JComboBox mElementBox;
// The cell panel we actually update.
private CellPanel mPreviewCells;
private Color mCellColor;
private Color mBackgroundColor;
private Color mOutlineColor;
boolean mSetCellColor;
boolean mSetBackgroundColor;
boolean mSetOutlineColor;
private static final String CELLS_STRING = "Cells";
private static final String BG_STRING = "Background";
private static final String OUTLINE_STRING = "Outline";
/**
* Construct a color chooser dialog.
*
* @param p The cell panel to set colors for.
*/
public ColorChooserDialog(CellPanel p) {
mCellPanel = p;
JPanel bannerPanel = new JPanel();
bannerPanel.setLayout(new FlowLayout());
bannerPanel.setBorder(BorderFactory.
createTitledBorder("Set color for"));
mElementBox = new JComboBox();
mElementBox.addItem(CELLS_STRING);
mElementBox.addItem(BG_STRING);
mElementBox.addItem(OUTLINE_STRING);
mElementBox.addItemListener(new SelectElementListener());
bannerPanel.add(mElementBox);
mColorChooser = new JColorChooser();
// Set the preview panel.
// Cheat! Since we already have this component handy, make a
// small 3x3 one with 20px cells as our preview panel.
JPanel previewPanel = new JPanel();
previewPanel.setLayout(new FlowLayout());
CellModel model = new CellModel(3,3);
mPreviewCells = new CellPanel(model, 20);
model.flipCell(1, 1);
previewPanel.add(mPreviewCells);
// Some VMs seem to require an explicit size setting here in
// order for the preview panel component to be displayed
// properly.
previewPanel.setSize(mPreviewCells.getSize());
previewPanel.setBorder(BorderFactory.createEmptyBorder(0,0,1,0));
mColorChooser.setPreviewPanel(previewPanel);
mColorChooser.getSelectionModel().addChangeListener(
new PreviewListener());
// Dialog OK/Cancel buttons
JPanel buttonBar = new JPanel();
buttonBar.setLayout(new FlowLayout(FlowLayout.RIGHT));
JButton okButton = new JButton("OK");
JButton cancelButton = new JButton("Cancel");
okButton.addActionListener(new SetColorListener());
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
setVisible(false);
}
});
buttonBar.add(okButton);
buttonBar.add(cancelButton);
getContentPane().add(bannerPanel, BorderLayout.NORTH);
getContentPane().add(mColorChooser, BorderLayout.CENTER);
getContentPane().add(buttonBar, BorderLayout.SOUTH);
pack();
setResizable(false);
}
/**
* Target a new cell panel.
*/
public void setCellPanel(CellPanel p) {
mCellPanel = p;
p.setForeground(mCellColor);
p.setBackground(mBackgroundColor);
p.setOutline(mOutlineColor);
}
/**
* Apply the new colors to the CellPanel we're updating, then hide.
*/
final private class SetColorListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
if (mSetCellColor) {
mCellPanel.setForeground(mCellColor);
}
if (mSetBackgroundColor) {
mCellPanel.setBackground(mBackgroundColor);
}
if (mSetOutlineColor) {
mCellPanel.setOutline(mOutlineColor);
}
mCellPanel.repaint();
// Hide, but stick around.
setVisible(false);
}
}
/**
* When the user selects a new element to change the color for,
* update the color chooser's model to reflect the color that's
* already there.
*/
final private class SelectElementListener implements ItemListener {
public void itemStateChanged(ItemEvent evt) {
if (mElementBox.getSelectedItem().equals(CELLS_STRING)) {
mColorChooser.setColor(mPreviewCells.getForeground());
} else if (mElementBox.getSelectedItem().equals(BG_STRING)) {
mColorChooser.setColor(mPreviewCells.getBackground());
} else if (mElementBox.getSelectedItem().equals(OUTLINE_STRING)) {
mColorChooser.setColor(mPreviewCells.getOutline());
}
mPreviewCells.repaint();
}
}
/**
* When the user selects a new color, update the preview panel
* and instance colors appropriately.
*/
final private class PreviewListener implements ChangeListener {
public void stateChanged(ChangeEvent evt) {
if (mElementBox.getSelectedItem().equals(CELLS_STRING)) {
mCellColor = mColorChooser.getColor();
mSetCellColor = true;
mPreviewCells.setForeground(mCellColor);
} else if (mElementBox.getSelectedItem().equals(BG_STRING)) {
mBackgroundColor = mColorChooser.getColor();
mSetBackgroundColor = true;
mPreviewCells.setBackground(mBackgroundColor);
} else if (mElementBox.getSelectedItem().equals(OUTLINE_STRING)) {
mOutlineColor = mColorChooser.getColor();
mSetOutlineColor = true;
mPreviewCells.setOutline(mOutlineColor);
}
mPreviewCells.repaint();
}
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
* Application setup and launch dialog.
*
* @author Seth Morabito
* @version $Id: Launcher.java,v 1.7 2003/10/13 04:00:24 sethm Exp $
*/
public class Launcher extends JFrame {
// Cell panel size, and default values
private int mCellSize = 10; // Size of cells in pixels
private int mRows = 64; // Rows
private int mCols = 64; // Columns
private AutomataFrame mAutomataFrame; // Main window.
private Dimension mScreenSize;
// Containers
private JPanel mIntroPanel;
private JPanel mInputPanel;
private JPanel mButtonPanel;
// Input
private JTextField mColsField;
private JTextField mRowsField;
private JTextField mCellSizeField;
// Labels
private JLabel mIntroLabel;
private JLabel mColsLabel;
private JLabel mRowsLabel;
private JLabel mCellSizeLabel;
private JLabel mPixelLabel;
// Buttons
private JButton mOKButton;
private JButton mCancelButton;
// Static reference to ourself
private static Launcher mLauncher;
private static final String FRAME_TITLE = "Setup";
/**
* Construct a default application launcher.
*/
public Launcher() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setupUI();
pack();
setResizable(false);
Utilities.centerWindow(this);
}
public static Launcher getLauncher() {
if (mLauncher == null) {
mLauncher = new Launcher();
}
return mLauncher;
}
/**
* Lay out the visual look.
*/
private void setupUI() {
setTitle(FRAME_TITLE);
// Set the system look and feel
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
; // Swallow this exception, because there's really no other
// useful action to take here.
}
mScreenSize = Toolkit.getDefaultToolkit().getScreenSize();
mIntroPanel = new JPanel();
mInputPanel = new JPanel();
mButtonPanel = new JPanel();
mButtonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
Font largeFont = new Font("SansSerif", Font.BOLD, 16);
Font smallFont = new Font("SansSerif", Font.PLAIN, 10);
mIntroLabel = new JLabel("Create a New Cellular Automata");
mIntroLabel.setFont(largeFont);
mIntroPanel.add(mIntroLabel);
mCellSizeLabel = new JLabel("Cell size");
mPixelLabel = new JLabel("(in pixels)");
mPixelLabel.setFont(smallFont);
mColsLabel = new JLabel("Columns");
mRowsLabel = new JLabel("Rows");
mColsField = new JTextField(Integer.toString(mCols));
mRowsField = new JTextField(Integer.toString(mRows));
mCellSizeField = new JTextField(Integer.toString(mCellSize));
mOKButton = new JButton("OK");
mOKButton.addActionListener(new CreateCellPanelListener());
mCancelButton = new JButton("Cancel");
mCancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
System.exit(0);
}
});
mColsField.setColumns(4);
mRowsField.setColumns(4);
mCellSizeField.setColumns(2);
GridBagLayout gb = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.insets = new Insets(5,5,5,5);
mInputPanel.setLayout(gb);
c.gridx = 0;
c.gridy = 0;
c.weightx = 0.0;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.EAST;
gb.setConstraints(mColsLabel, c);
mInputPanel.add(mColsLabel);
c.gridx = 1;
c.gridy = 0;
c.weightx = 0.0;
c.gridwidth = 2;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.WEST;
gb.setConstraints(mColsField, c);
mInputPanel.add(mColsField);
c.gridx = 0;
c.gridy = 1;
c.weightx = 0.0;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.EAST;
gb.setConstraints(mRowsLabel, c);
mInputPanel.add(mRowsLabel);
c.gridx = 1;
c.gridy = 1;
c.weightx = 0.0;
c.gridwidth = 2;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.WEST;
gb.setConstraints(mRowsField, c);
mInputPanel.add(mRowsField);
c.gridx = 0;
c.gridy = 2;
c.weightx = 0.0;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.EAST;
gb.setConstraints(mCellSizeLabel, c);
mInputPanel.add(mCellSizeLabel);
c.gridx = 1;
c.gridy = 2;
c.weightx = 0.0;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.WEST;
gb.setConstraints(mCellSizeField, c);
mInputPanel.add(mCellSizeField);
c.gridx = 2;
c.gridy = 2;
c.weightx = 0.0;
c.gridwidth = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
gb.setConstraints(mPixelLabel, c);
mInputPanel.add(mPixelLabel);
mButtonPanel.add(mOKButton);
mButtonPanel.add(mCancelButton);
getContentPane().add(mIntroPanel, BorderLayout.NORTH);
getContentPane().add(mInputPanel, BorderLayout.CENTER);
getContentPane().add(mButtonPanel, BorderLayout.SOUTH);
}
private int getCols() {
try {
return Integer.parseInt(mColsField.getText());
} catch (NumberFormatException ex) {
return mCols;
}
}
private int getRows() {
try {
return Integer.parseInt(mRowsField.getText());
} catch (NumberFormatException ex) {
return mRows;
}
}
private int getCellSize() {
try {
return Integer.parseInt(mCellSizeField.getText());
} catch (NumberFormatException ex) {
return mCellSize;
}
}
/**
* The main application entry point.
*
* @param args Application arguments (not used).
*/
public static void main(String[] args) {
Launcher launcher = Launcher.getLauncher();
launcher.setVisible(true);
}
private final class CreateCellPanelListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
int cols = getCols();
int rows = getRows();
int cellSize = getCellSize();
if (cellSize < 0 || cols < 0 || rows < 0) {
JOptionPane.showMessageDialog(null,
"Please use positive numbers.");
return;
}
if (cellSize * cols > mScreenSize.width ||
cellSize * rows > mScreenSize.height) {
JOptionPane.showMessageDialog(null,
"The values you've chosen would create\n" +
"a window too large to fit on the screen.\n" +
"Please choose smaller values.");
return;
}
if (mAutomataFrame == null) {
mAutomataFrame = new AutomataFrame();
}
mAutomataFrame.addCells(cols, rows, cellSize);
mAutomataFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mAutomataFrame.pack();
mAutomataFrame.setResizable(false);
Utilities.centerWindow(mAutomataFrame);
mAutomataFrame.setVisible(true);
// hide ourselves
setVisible(false);
}
}
}

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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
/**
* Define a set of rules which transform one 2D array into
* another.
*
* @author Seth Morabito
* @version $Id: RuleSet.java,v 1.8 2003/10/13 04:00:24 sethm Exp $
*/
public class RuleSet {
final int[] mBornOn;
final int[] mSurviveOn;
String mName;
String mShortName;
/**
* Create a new ruleset with a nickname.
*
* @param name The displayable name of this rule, i.e. "Life"
* @param born Array of neighbors required for an empty cell to
* come to life.
* @param survive Array of neighbors required for a living cell to
* survive.
*/
public RuleSet(String name, int[] born, int[] survive) {
mBornOn = born;
mSurviveOn = survive;
mShortName = name;
makeDisplayableName(name);
}
/**
* Create a new un-named ruleset.
*
* @param born Array of neighbors required for an empty cell to
* come to life.
* @param survive Array of neighbors required for a living cell to
* survive.
*/
public RuleSet(int[] born, int[] survive) {
this(null, born, survive);
}
/**
* Transform from one generation of cells to the next.
*/
public void transform(boolean[][] from, boolean[][] to) {
if (from == null || to == null) { return; }
int cols = Utilities.getWidth(to);
int rows = Utilities.getHeight(to);
for (int i = 0; i < cols; i++) {
for (int j = 0; j < rows; j++) {
int count = Utilities.getNeighborCount(from, i, j);
boolean val = false;
if (!from[i][j]) {
// "Born" rules
for (int k = 0; k < mBornOn.length; k++) {
val |= (count == mBornOn[k]);
}
} else {
// "Survive" rules
for (int k = 0; k < mSurviveOn.length; k++) {
val |= (count == mSurviveOn[k]);
}
}
to[i][j] = val;
}
}
}
/**
* Get the name of this ruleset.
*
* @return The displayable name of this ruleset.
*/
public String getName() {
return mName;
}
/**
* Get the short name of this ruleset.
*
* @return The displayable name of this ruleset.
*/
public String getShortName() {
return mShortName;
}
/**
* Munge the parameter string into a fancy displayable name.
*/
void makeDisplayableName(String s) {
StringBuffer buf = new StringBuffer();
if (s != null) {
buf.append(s);
buf.append(" (");
}
buf.append("B");
for (int i = 0; i < mBornOn.length; i++) {
buf.append(Integer.toString(mBornOn[i]));
}
buf.append("/S");
for (int i = 0; i < mSurviveOn.length; i++) {
buf.append(Integer.toString(mSurviveOn[i]));
}
if (s != null) {
buf.append(")");
}
mName = buf.toString();
}
}

108
src/com/loomcom/automata/UpdateThread.java Normal file
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@ -0,0 +1,108 @@
/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
/**
* Thread which updates the cell model.
*
* @author Seth Morabito
* @version $Id: UpdateThread.java,v 1.5 2003/10/04 01:23:14 sethm Exp $
*/
public class UpdateThread extends Thread {
CellModel mCellModel;
int mSleepInterval;
boolean mStop = false;
boolean mPause = true;
public UpdateThread(CellModel m) {
mCellModel = m;
}
/**
* Set the delay between each cell data update.
*
* @param i The delay, in milliseconds.
*/
public void setSleepInterval(int i) {
mSleepInterval = i;
}
/**
* Transform the cell model, then wait for a specified time and loop.
*/
public void run() {
while (!mStop) {
while (mPause) {
try {
synchronized(this) {
wait();
mPause = false;
}
} catch (InterruptedException ex) {
System.out.println(ex);
}
}
// Update the cell generation one step.
mCellModel.transform();
try {
Thread.sleep(mSleepInterval);
} catch (InterruptedException ex) {
System.out.println(ex);
}
}
}
/**
* Start updating the cell data if the thread is currently paused.
*/
public synchronized void go() {
this.notifyAll();
}
/**
* Pause the thread. The thread can be started again using
* the <tt>go()</tt> method.
*
*/
public void pause() {
mPause = true;
}
/**
* Stop the thread. The thread cannot be started again once
* it has been stopped.
*/
public void doStop() {
mStop = true;
}
/**
* Returns true of the thread is paused (not updating the model).
*
* @return true if the thread is not currently updating
* the cell data (i.e., in a wait state)
*/
public boolean isPaused() {
return mPause;
}
}

99
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/*
* Automata, a Cellular Automata explorer.
*
* Copyright (c) 2003, Seth J. Morabito <sethm@loomcom.com> All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.loomcom.automata;
import java.awt.*;
/**
* A few useful static utilities.
*
* @author Seth Morabito
* @version $Id: Utilities.java,v 1.4 2003/07/09 23:20:11 sethm Exp $
*/
public class Utilities {
/**
* Center a window on screen.
*
* @param w The window to center.
*/
public static void centerWindow(Window w) {
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
int width = w.getWidth();
int height = w.getHeight();
w.setLocation(d.width/2 - width/2, d.height/2 - height/2);
}
/**
* Determine the number of living neighbor cells for a point in a 2D
* array.
*
* This version unrolls the loop and implements "wrap-around",
* eliminating edge effects. The code is longer and messier, but because
* of unrolling the loop, we actually see about a 2x execution time
* reduction.
*
* @param cells The array to look in.
* @param x The cell's x coordinate.
* @param y The cell's y coordinate.
*/
public static int getNeighborCount(boolean[][] cells, int x, int y) {
int neighborCount = 0;
int cols = cells.length;
int rows = cells[0].length;
int x_right = x < cols-1 ? x+1 : 0;
int x_left = x > 0 ? x-1 : cols-1;
int y_top = y > 0 ? y-1 : rows-1;
int y_bottom = y < rows-1 ? y+1 : 0;
if (cells[x_left][y_top]) neighborCount++;
if (cells[x_left][y]) neighborCount++;
if (cells[x_left][y_bottom]) neighborCount++;
if (cells[x][y_top]) neighborCount++;
if (cells[x][y_bottom]) neighborCount++;
if (cells[x_right][y_top]) neighborCount++;
if (cells[x_right][y]) neighborCount++;
if (cells[x_right][y_bottom]) neighborCount++;
return neighborCount;
}
/**
* Safely return the "width" of a 2D array.
*/
public static int getWidth(boolean[][] array) {
return array.length;
}
/**
* Safely return the "height" of a 2D array.
*/
public static int getHeight(boolean[][] array) {
if (array.length > 0) {
return array[0].length;
} else {
return 0;
}
}
}