org.bitstorm.gameoflife
Class GameOfLifeGrid

java.lang.Object
  org.bitstorm.gameoflife.GameOfLifeGrid

All Implemented Interfaces:

CellGrid

public class GameOfLifeGrid

extends java.lang.Object

implements CellGrid

Contains the cellgrid, the current shape and the Game Of Life algorithm that changes it.

Author:

Edwin Martin

Field Summary

private int	cellCols
private int	cellRows
private java.util.Hashtable	currentShape Contains the current, living shape.
private int	generations
private Cell[][]	grid Every cell on the grid is a Cell object.
private java.util.Hashtable	nextShape
private static Shape[]	shapes

Constructor Summary

GameOfLifeGrid(int cellCols, int cellRows)
Contructs a GameOfLifeGrid.

Method Summary

void	addNeighbour(int col, int row) Adds a new neighbour to a cell.
void	clear() Clears grid.
boolean	getCell(int col, int row) Get value of cell.
java.awt.Dimension	getDimension() Get dimension of grid.
java.util.Enumeration	getEnum() Get enumeration of Cell's
int	getGenerations() Get number of generations.
void	next() Create next generation of shape.
void	resize(int cellColsNew, int cellRowsNew) Resize grid.
void	setCell(int col, int row, boolean c) Set value of cell.

Methods inherited from class java.lang.Object

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

Field Detail

cellRows

private int cellRows

cellCols

private int cellCols

generations

private int generations

shapes

private static Shape[] shapes

currentShape

private java.util.Hashtable currentShape

Contains the current, living shape. It's implemented as a hashtable. Tests showed this is 70% faster than Vector.

nextShape

private java.util.Hashtable nextShape

grid

private Cell[][] grid

Every cell on the grid is a Cell object. This object can become quite large.

Constructor Detail

GameOfLifeGrid

public GameOfLifeGrid(int cellCols,
                      int cellRows)

Contructs a GameOfLifeGrid.

Parameters:

cellCols - number of columns

cellRows - number of rows

Method Detail

clear

public void clear()

Clears grid.

Specified by:

clear in interface CellGrid

next

public void next()

Create next generation of shape.

addNeighbour

public void addNeighbour(int col,
                         int row)

Adds a new neighbour to a cell.

Parameters:

col - Cell-column

row - Cell-row

getEnum

public java.util.Enumeration getEnum()

Get enumeration of Cell's

Specified by:

getEnum in interface CellGrid

Returns:

Enumerator over Cell.

See Also:

CellGrid.getEnum()

getCell

public boolean getCell(int col,
                       int row)

Get value of cell.

Specified by:

getCell in interface CellGrid

Parameters:

col - x-coordinate of cell

row - y-coordinate of cell

Returns:

value of cell

setCell

public void setCell(int col,
                    int row,
                    boolean c)

Set value of cell.

Specified by:

setCell in interface CellGrid

Parameters:

col - x-coordinate of cell

row - y-coordinate of cell

c - value of cell

getGenerations

public int getGenerations()

Get number of generations.

Returns:

number of generations

getDimension

public java.awt.Dimension getDimension()

Get dimension of grid.

Specified by:

getDimension in interface CellGrid

Returns:

dimension of grid

resize

public void resize(int cellColsNew,
                   int cellRowsNew)

Resize grid. Reuse existing cells.

Specified by:

resize in interface CellGrid

Parameters:

cellColsNew - new number of columns.

cellRowsNew - new number of rows.

See Also:

CellGrid.resize(int, int)