import java.applet.*;
import java.awt.*;
import java.util.*;
import java.math.*;

public class Ball extends Applet implements Runnable
{
	
	int x_pos = 590, y_pos = 100, radius = 20, appletsize_x = 800, appletsize_y = 600, x_speed=0, y_speed=0;
	
	int x_pos1 = 100, y_pos1 = 100, x_speed1, y_speed1;
	
	int limit = 100;
	
	Random rnd = new Random();
		
	private Image dbImage;
	private Graphics dbg;

	public void init()
	{
		setBackground (Color.blue);
	}

	public void start ()
	{
		
		Thread th = new Thread (this);
		
		th.start ();
	}

	public void stop()
	{

	}

	public void destroy()
	{

	}

	public void run ()
	{
		
			Thread.currentThread().setPriority(Thread.MIN_PRIORITY);

		
		while (true)
		{
			if (x_pos > appletsize_x - radius)
			{
				x_speed = -10; 
			}
	
			else if (x_pos < radius)
			{
				x_speed = +10; 
			}
			
			else if (y_pos > appletsize_y - radius)
			{
				y_speed = -10;  
			}
			
			else if (y_pos < radius)
			{
				y_speed = +10;
			}
			
			else if (x_pos < x_pos1-50)///////////////////////////
			{
				x_pos = 590;
				y_pos = rnd.nextInt(600);
			}
			
			x_pos += x_speed;
			y_pos += y_speed;
			
			
			
			
			
			
			if (x_pos1 > appletsize_x - radius)
			{
				x_speed1 = -10;
			
			}
	
			else if (x_pos1 < radius)
			{
				x_speed1 = +10; 
			}
			
			else if (y_pos1 > appletsize_y - radius*4)
			{
				y_speed1 = -10;  
			}
			
			else if (y_pos1 < radius)
			{
				y_speed1 = +10;
			}
			
			
			x_pos1 += x_speed1;
			y_pos1 += y_speed1;

			
			repaint();

			try
			{
				Thread.sleep (20);
			}
			
			catch (InterruptedException ex)
			{
				
			}

			Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
		}
	}

	
	public void update (Graphics g)
	{
		
		if (dbImage == null)
		{
			dbImage = createImage (this.getSize().width, this.getSize().height);
			dbg = dbImage.getGraphics ();
		}

		
		dbg.setColor (getBackground ());
		dbg.fillRect (0, 0, this.getSize().width, this.getSize().height);

		
		dbg.setColor (getForeground());
		paint (dbg);

		
		g.drawImage (dbImage, 0, 0, this);
	}

	public void paint (Graphics g)
	{
		g.setColor  (Color.red);

		g.fillOval  (x_pos - radius, y_pos - radius, 2 * radius, 2 * radius);
		
		g.setColor  (Color.green);

		g.fillRect  (x_pos1 - radius, y_pos1 - radius, 2 * radius, 2 * radius+50);
	}
	
	public boolean keyDown (Event e, int key)
{

      if (key == Event.LEFT)
      {
            x_speed = -10;
            y_speed = 0;
      }
      
      else if (key == Event.RIGHT)
      {
            x_speed = 10;
            y_speed = 0;
      }
      
      else if (key == Event.DOWN)
      {
      		y_speed = 10;
      		x_speed = 0;
      }
      
      else if (key == Event.UP)
      {
      		y_speed = -10;
      		x_speed = 0;
      }
      
      else if (key == 32)
      {
            x_speed = -10;
            y_speed = +10;
      }
      else
      {
            System.out.println ("Character: " + (char)key + " Integer Value: " + key);
      }
      
      if (key == 113)
      {
            x_speed1 = 0;
            y_speed1 = -10;
      }
      
      else if (key == 97)
      {
            x_speed1 = 0;
            y_speed1 = +10;
      }
      
      //else if (key == 32)
      //{
      //      x_speed1 = 0;
      //      y_speed1 = 0;
      //}
      else
      {
            System.out.println ("Character: " + (char)key + " Integer Value: " + key);
      }

      return true;

}
}