Class CellLife

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--CellLife

public class CellLife

extends java.applet.Applet

implements java.lang.Runnable

Our main applet class. Draw the creatures and manages their lives. Stores a list of creatures and a list of references to all the cells in the universe, to simplify collision detection. Keeps track of how much time has passed.

See Also:

Serialized Form

Field Summary

protected tjhBuckets	buckets space-partitioning structure to speed collision detection
protected java.util.Vector	creatures A list of the creatures currently alive.
protected long	generations The number of creatures that have been born since the simulation started
protected tjh2dVector	limit The world is a rectangle from (0,0) to (limit.x,limit,y)
protected static int	MAX_CREATURES the maximum number of creatures in the world.

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Constructor Summary

CellLife()
CellLife Class Constructor

Method Summary

void	destroy()
java.lang.String	getAppletInfo() The getAppletInfo() method returns a string describing the applet's author, copyright date, or miscellaneous information.
void	init() first-time initialization
boolean	mouseDown(java.awt.Event evt, int x, int y)
boolean	mouseDrag(java.awt.Event evt, int x, int y)
boolean	mouseUp(java.awt.Event evt, int x, int y)
void	paint(java.awt.Graphics g) CellLife Paint Handler
void	run()
void	start()
void	stop()

Methods inherited from class java.applet.Applet

getAppletContext, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFont, setLayout, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocation, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseEnter, mouseExit, mouseMove, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

MAX_CREATURES

protected static final int MAX_CREATURES

the maximum number of creatures in the world. When the number of creatures alive drops below half this, a new one is created to bring the numbers back up.

creatures

protected java.util.Vector creatures

A list of the creatures currently alive. Stores tjhCreature references.

limit

protected tjh2dVector limit

The world is a rectangle from (0,0) to (limit.x,limit,y)

generations

protected long generations

The number of creatures that have been born since the simulation started

buckets

protected tjhBuckets buckets

space-partitioning structure to speed collision detection

Constructor Detail

CellLife

public CellLife()

CellLife Class Constructor

Method Detail

getAppletInfo

public java.lang.String getAppletInfo()

The getAppletInfo() method returns a string describing the applet's author, copyright date, or miscellaneous information.

Overrides:

getAppletInfo in class java.applet.Applet

init

public void init()

first-time initialization

Overrides:

init in class java.applet.Applet

destroy

public void destroy()

Overrides:

destroy in class java.applet.Applet

paint

public void paint(java.awt.Graphics g)

CellLife Paint Handler

Overrides:

paint in class java.awt.Container

start

public void start()

Overrides:

start in class java.applet.Applet

stop

public void stop()

Overrides:

stop in class java.applet.Applet

run

public void run()

Specified by:

run in interface java.lang.Runnable

mouseDown

public boolean mouseDown(java.awt.Event evt,
                         int x,
                         int y)

Overrides:

mouseDown in class java.awt.Component

mouseDrag

public boolean mouseDrag(java.awt.Event evt,
                         int x,
                         int y)

Overrides:

mouseDrag in class java.awt.Component

mouseUp

public boolean mouseUp(java.awt.Event evt,
                       int x,
                       int y)

Overrides:

mouseUp in class java.awt.Component