// Helene Martin, CSE 142
// Draws squares of random color and position on a DrawingPanel
// until 20 red squares are drawn.

import java.util.*;
import java.awt.*;

public class RandomRects {
	public static final int SIZE = 500;
	public static final int SIDE = 10;
	
	public static void main(String[] args) {
		Random r = new Random();		
		DrawingPanel p = new DrawingPanel(SIZE, SIZE);
		Graphics g = p.getGraphics();
		Point center = new Point(SIZE / 2, SIZE / 2);
		
		int redCounter = 0;
		int rects = 0;
		
		while(redCounter < 20) {
			int col = randomRect(g, r, center);
			p.sleep(50);
			rects++;
			
			if(col == 0) {
				redCounter++;
			}
		}
		System.out.println("Got 20 red rectangles in " + rects + " tries");
	}
	
	// draws a randomly colored rectangle at a random location
	// prints its location and distance from center
	public static int randomRect(Graphics g, Random r, Point center) {
		int x = r.nextInt(SIZE - SIDE + 1);
		int y = r.nextInt(SIZE - SIDE + 1);
		Point rect = new Point(x, y);
				
		int col = r.nextInt(3);
		if(col == 0) {
			g.setColor(Color.RED);
		} else if(col == 1) {
			g.setColor(Color.BLUE);
		} else { // 2
			g.setColor(Color.GREEN);
		}
		
		g.fillRect(rect.x, rect.y, SIDE, SIDE);
		System.out.println("Drawing square at (" + rect.x + ", " + rect.y + ")");
		System.out.println("\tdistance from center: " + rect.distance(center));	
		
		return col;
	}
}