import java.awt.*;
import java.util.*;
public class CopyOfPongette {

   public static void main(String[] args) {
      Random r = new Random();
      int width = 150;
      int height = 237;
      DrawingPanel2 panel = new DrawingPanel2(width, height);
      Graphics g = panel.getGraphics();
      panel.setBackground(Color.red);

      int nMoves = 2000;
      int dx = 2;
      int dy = 1;

      Circle c1 = new Circle(40, 40, 25);

      for ( int i = 0; i < nMoves; i++)
      {
          c1.draw(g);
          panel.sleep(25);                                // pause
          c1.erase(g, Color.white);

          if (c1.hitsVerticalWall(width))
              dx = -dx;
          c1.move(dx, dy);
          g.setColor(new Color(r.nextInt(256),  r.nextInt(256), r.nextInt(256)));

          if (c1.hitsHorizontalWall(height))
              dy = -dy;
          c1.move(dx, dy);
          g.setColor(new Color(r.nextInt(256),  r.nextInt(256), r.nextInt(256)));

      }
      c1.draw(g);
   }
}