import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class Kukkumine2 extends Applet 
    implements Runnable, MouseListener{
  double px=100;
  double py=100;
  double sammx=2;
  double sammy=0;
  double vajutusx, vajutusy;
  int pr=10;
  int tx=150;
  int ty=100;
  int tr=20;
  boolean tpihtas=false;
  boolean veel=true;
  public Kukkumine2(){
    new Thread(this).start();
    addMouseListener(this);
  }
  public void mousePressed(MouseEvent e){
    sammx=0;
    sammy=0;
    vajutusx=e.getX();
    vajutusy=e.getY();
  }
  public void mouseReleased(MouseEvent e){
    px=e.getX();
    py=e.getY();
    sammx=px-vajutusx;
    sammy=py-vajutusy;
  }
  public void mouseClicked(MouseEvent e){}
  public void mouseEntered(MouseEvent e){}
  public void mouseExited(MouseEvent e){
    tpihtas=false;
    repaint();
  }
  
  public void paint(Graphics g){
     g.drawOval((int)(px-pr), (int)(py-pr), 2*pr, 2*pr);
     if(tpihtas){
       g.setColor(Color.red);
     }
     g.drawOval(tx-tr, ty-tr, 2*tr, 2*tr);
  }
  public void run(){
    while(veel){
      sammy=sammy+0.98;
      if(py+sammy<getHeight()){
        if(py<0 && sammy<0){
          py=-py;
          sammy=-sammy;
        }
        px=px+sammx;
        py=py+sammy;
        double dx=px-tx;
        double dy=py-ty;
        double kaugus=Math.sqrt(dx*dx+dy*dy);
        if(kaugus<pr+tr){tpihtas=true;}
      }
      try{Thread.sleep(100);}catch(Exception e){}
      repaint();
    }
  }
  
  
  public static void main(String[] arg){
     Frame f=new Frame("Kukkumine");
     f.add(new Kukkumine2());
     f.setSize(300, 300);
     f.setVisible(true);
  }
}