import java.awt.*;

public class example2 extends BufferedApplet
{
   int BR = 20;
   int w = 0, h = 0;
   int mx = 0, my = 0;
   double bx = 0, by = 0;
   double time0 = 0, time = 0;
   Font font = new Font("Helvetica", Font.BOLD, 30);

   double deltaX = 0.0;
   double deltaY = 2.0;

   int level = 0;

   public void render(Graphics g) {
      if (w == 0) {
	 w = bounds().width;
	 h = bounds().height;
	 time0 = System.currentTimeMillis() / 1000.0;
      }

      time = System.currentTimeMillis() / 1000.0;
      double elapsed = (time - time0);

      g.setColor(Color.black);
      g.fillRect(0, 0, w, h);

      g.setColor(Color.white);
      g.fillRect(mx - 25, h - 50, 50, 10);

      g.setColor(Color.red);
      g.fillOval((int)bx - BR, (int)by - BR, 2*BR, 2*BR);

      g.setColor(Color.white);
      g.fillOval((int)bx + BR/4, (int)by - 2*BR/3, 3*BR/5, 3*BR/5);

      if (bx >= BR && bx + deltaX < BR)
	 deltaX = -deltaX;

      if (bx < w-BR && bx + deltaX >= w-BR)
	 deltaX = -deltaX;

      if (bx >= mx - 25 && bx < mx + 25 && by + BR >= h - 50)
	 deltaY = -2;

      bx += deltaX;
      by += deltaY;

      deltaY += 0.01;

      animating = true;
   }

   public boolean mouseUp(Event e, int x, int y) { 
      bx = x;
      by = 0;
      deltaX = 4 * (-1.0 + 2 * (time % 1.0));
      deltaY = 2;
      return true;
   }

   public boolean mouseMove(Event e, int x, int y) { 
      mx = x;
      my = y;
      return true;
   }
}