int w = 8;

int cols, rows;

int[][] board;

public void settings() {

size(800, 800);

cols = width/w;

rows = height/w;

board = new int[cols][rows];

for (int x = 0; x < cols; x++) {

for (int y = 0; y < rows; y++) {

board[x][y] = (int) (Math.random() * 2);

}

}

}

public void generate() {

int[][] next = new int[cols][rows];

for (int x = 0; x < cols; x++) {

for (int y = 0; y < rows; y++) {

int neighbors = 0;

for (int i = -1; i <= 1; i++) {

for (int j = -1; j <= 1; j++) {

neighbors += board[(x + i + cols) % rows][(y + j + rows) % rows];

}

}

neighbors -= board[x][y];

if ((board[x][y] == 1) && (neighbors < 2)) next[x][y] = 0;

else if ((board[x][y] == 1) && (neighbors > 3)) next[x][y] = 0;

else if ((board[x][y] == 0) && (neighbors == 3)) next[x][y] = 1;

else next[x][y] = board[x][y];

}

}

board = next;

}

public void display() {

for ( int i = 0; i < cols;i++) {

for ( int j = 0; j < rows;j++) {

if ((board[i][j] == 1)) fill(0);

else fill(255);

stroke(0);

rect(i*w, j*w, w, w);

}

}

}

public void draw() {

background(255);

generate();

display();

}

public void mousePressed() {

settings();

}

public static void main(String... args){

PApplet.main("GameOfLife");

}