import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
public class KukkuvPall2 extends Applet 
         implements MouseListener{
  int r=10;
  double koef=10; //10 punkti=1 meeter
  int maapind=200;
  int ex(double ox){
    return (int)(ox*koef);
  }
  int ey(double oy){
    return (int)(maapind-oy*koef);
  }
  double ox(int ex){
    return ex/koef;
  }
  double oy(int ey){
    return (maapind-ey)/koef;
  }
  public KukkuvPall2(){
    addMouseListener(this);
  }
  
  double kukkumiseYKoordinaat(double aeg){
    return 9.8*aeg*aeg/2;
  }
  public void mousePressed(MouseEvent e){
    maapind=getHeight();
    double ax=ox(e.getX());
    double ay=oy(e.getY());
    Graphics g=getGraphics();
    for(double ky=0, aeg=0; ay>ky; 
         aeg+=0.1, ky=kukkumiseYKoordinaat(aeg)){
      g.setColor(Color.black);
      g.drawOval(ex(ax)-r, ey(ay-ky)-r, 2*r, 2*r);
      try{Thread.sleep(100);}catch(Exception erind){}
      g.setColor(Color.white);
      g.drawOval(ex(ax)-r, ey(ay-ky)-r, 2*r, 2*r);      
    }    
  }
  public void mouseReleased(MouseEvent e){}
  public void mouseClicked(MouseEvent e){}
  public void mouseEntered(MouseEvent e){}
  public void mouseExited(MouseEvent e){}

  public static void main(String[] argumendid){
    Frame f=new Frame();
    f.add(new KukkuvPall2());
    f.setSize(200, 200);
    f.setVisible(true);
  }
}