I recently coded a program to stimulate Conway's Game of Life: http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life. Originally, my program just printed an array of 1's and 0's where the 1's represented the "live" cells, but I tried to teach myself some graphics programming to add graphics to the game. Currently, my program draws a black rectangle to represent a live cell and a white one to represent a dead cell in a grid of rectangles. I am looking to improve my implementation of the graphics and do it in a more organized and traditional way.
Here is my code:
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.*;
import java.awt.Dimension;
import java.awt.Graphics;
public class GameofLife {
static JPanel panel;
static JFrame frame;
public static void main(String[] args) throws InterruptedException{
int [][] array = new int [28][28];
/*
* Set the pattern for Conway's Game of Life by manipulating the array below.
*/
/*Acorn
*/
array[19][15]=1;
array[19][16]=1;
array[19][19]=1;
array[19][20]=1;
array[19][21]=1;
array[18][18]=1;
array[17][16]=1;
panel = new JPanel();
Dimension dim = new Dimension(400,400);
panel.setPreferredSize(dim);
frame = new JFrame();
frame.setSize(1000, 500);
Container contentPane = frame.getContentPane();
contentPane.add(panel);
frame.setVisible(true);
/*
* Runs the Game of Life simulation "a" number of times.
*/
int [][] end = new int [array.length][array[0].length];
int a=0;
while(true){
for(int i=1; i<=array.length-2; i++)
{
for(int j=1; j<=array[0].length-2; j++)
{
int counter = surround(array,i,j);
if(array[i][j]==1 && counter<=2)
{
end[i][j]=0;
}
if(array[i][j]==1 && counter==3)
{
end[i][j]=1;
}
if(array[i][j]==1 && counter>4)
{
end[i][j]=0;
}
if(array[i][j]==0 && counter==3)
{
end[i][j]=1;
}
if(array[i][j]==1 && counter==4)
{
end[i][j]=1;
}
}
}
Graphics g = panel.getGraphics();
Graphics(array,g);
a++;
/*
* printArray(array);
System.out.println("");
System.out.println("");
*
*/
for(int i=0; i<array.length; i++)
{
for(int j=0; j<array[0].length; j++)
{
array[i][j]=end[i][j];
end[i][j]=0;
}
}
Thread.sleep(125);
g.dispose();
}
}
/*
* Checks the cells around a specific cell in the initial array and returns the number
* of live cells surrounding it.
*/
public static int surround(int[][] initial, int i, int j){
int[][] surrounding = {{initial[i-1][j-1],initial[i-1][j],initial[i-1][j+1]},
{initial[i][j-1],initial[i][j],initial[i][j+1]},
{initial[i+1][j-1],initial[i+1][j],initial[i+1][j+1]}};
int counter = 0;
for(int a=0; a<=2; a++)
{
for(int b=0; b<=2; b++)
{
if(surrounding[a][b]==1)
{
counter ++;
}
}
}
return counter;
}
/*
* Prints the 2D array.
*/
public static void printArray(int[][] input)
{
for(int x =0; x<input.length; x++)
{
for(int y=0; y< input[0].length; y++)
{
System.out.print(input[x][y]);
}
System.out.println("");
}
}
/*
* Creates the graphic for Conway's game of life.
*/
public static void Graphics(int[][] array, Graphics g)
{
int BOX_DIM=10;
for(int i=0; i<array.length; i++)
{
for(int j=0; j<array[0].length; j++)
{
g.drawRect(i*BOX_DIM, j*BOX_DIM, 10,10);
if(array[i][j]==0)
{
g.setColor(Color.WHITE);
g.fillRect(i*BOX_DIM, j*BOX_DIM, 10, 10);
}
if(array[i][j]==1)
{
g.setColor(Color.BLACK);
g.fillRect(i*BOX_DIM, j*BOX_DIM, 10, 10);
}
}
}
}
}
Thanks for any help!
