import java.util.LinkedList;
import java.util.Queue;

public class GOLThread extends Thread {

	public GOLThread(GameOfLife gol) {
		this.gol = gol;
	}
	
	GameOfLife gol;
	
	Queue<Point> work = new LinkedList<>();
	
	boolean exiting = false;
	
	boolean pointsProcessed = false;
	
	public void exiting() {
		exiting = true;
	}
	
	public Environment getEnv() {
		return gol.env;
	}
	
	public void pointsProcessed() {
		pointsProcessed = true;
	}
	
	public void addPoint(Point p) {
		work.add(p);
	}
	
	@Override
	public void run() {
		while (true) {
			while (!work.isEmpty() && !exiting) {
				Point point = work.poll();
				for (Point p : point.neighbours()) {
					getEnv().increment(p);
				}
			}
			if (exiting) {
				return;
			}
			if (pointsProcessed) {
				gol.threadFinished();
				pointsProcessed = false;
			}
			try {
				sleep(100);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
	
}