Main.java

package com.jnumerical.gameoflife;

import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
import javax.swing.JFrame;

public class Main extends Canvas implements Runnable {
    static String title = "Game of Life";
    private boolean running = false;
    private Thread thread;
    private JFrame frame;
    private Board board;

    static int width = 1900; // pixels width of board
    static int height = 1000; // pixels height of board
    private int cellPixels = 8; // pixels across a cell plus the gap
    private int gridPixels = 2; // pixels between each cell
    private int tick = 500; // milliseconds between ticks
    private int chance = 13; // percent chance each cell will start alive
    private int boardLife = 50; // number of ticks until board randomization
    private int colorLife = 10; // number of ticks until new color chosen

    public Main(){
        setPreferredSize(new Dimension(width, height));
        frame = new JFrame();
        board = new Board(chance, cellPixels, gridPixels, boardLife, colorLife);
    }
    public synchronized void start(){
        running = true;
        thread = new Thread(this, "Thread");
        thread.start();
    }
    public synchronized void stop(){
        running = false;
        try{
            thread.join();
        }catch(InterruptedException e){
            e.printStackTrace();
        }
    }
    public void run(){
        requestFocus();
        long lastTime = 0;
        while(running){
            long time = System.currentTimeMillis();
            if(time - lastTime >= tick){
                lastTime = time;
                update();
                render();
            }
        }
        stop();
    }
    public void update(){
        board.update();
    }
    public void render(){
        BufferStrategy bs = getBufferStrategy();
        if(bs == null){
            createBufferStrategy(3);
            return;
        }
        Graphics g = bs.getDrawGraphics();
        board.render(g);
        g.dispose();
        bs.show();
    }
    public static void main(String[] args){
        Main main = new Main();
        main.frame.setResizable(false);
        main.frame.setTitle(title);
        main.frame.add(main);
        main.frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        main.frame.setLocation(7, 0);
        main.frame.setVisible(true);
        main.frame.requestFocus();
        main.frame.pack();
        main.start();
    }
}