import java.applet.Applet;
import java.awt.event.*;
import java.awt.*;
import java.util.Vector;
import java.lang.Math.*;

public class Eksam2b extends Applet implements Runnable,KeyListener{
 int x=10;
 int y=10;
 double sammx, sammy;
 int a, b;
 double nurk=0;
 double raadius=50;
 double samm=0.05;

 boolean veel=true;

 boolean ikka=false;
  public Eksam2b(){
    addKeyListener(this);
}
public void paint(Graphics g){
    int a=x-(int)(raadius*Math.cos(nurk));
    int b=y+(int)(raadius*Math.sin(nurk));

   g.drawLine(x, y, a, b);

}
	

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

  public void run(){
    while(veel){
        repaint();
      try{Thread.sleep(10); }catch(Exception e){}
    }
  }
  public void stop(){
    veel=false;
  }

   public void keyPressed(KeyEvent e){
    Graphics p= this.getGraphics();
    p.setColor(Color.white);
    p.drawLine(x, y, x+50, y);

    int kood=e.getKeyCode();
    if(x>0){
    	if(kood==KeyEvent.VK_NUMPAD4)x=x-5;
    	//System.out.println(x);
    }
    if(x<240){
    	if(kood==KeyEvent.VK_NUMPAD6)x=x+5;
    	//System.out.println(x);
    }
    if(y>0){
    	if(kood==KeyEvent.VK_NUMPAD8)y=y-5;
        //System.out.println(y);
    }
    if(y<270){
    	if(kood==KeyEvent.VK_NUMPAD2)y=y+5;
    	//System.out.println(y);
    }

    p.setColor(Color.black);
    p.drawLine(x, y, x+50, y);
    repaint();

    if(kood==KeyEvent.VK_NUMPAD9){
    a=x-(int)(raadius*Math.cos(nurk));
    b=y-(int)(raadius*Math.sin(nurk));    
    nurk=nurk+samm;
    p.setColor(Color.black);
    p.drawLine(x, y, a, b);
    repaint();
}   

    if(kood==KeyEvent.VK_NUMPAD7){
    int a=x+(int)(raadius*Math.cos(nurk));
    int b=y-(int)(raadius*Math.sin(nurk));
    nurk=nurk+samm;
    p.setColor(Color.black);
    p.drawLine(x, y, a, b);
    repaint();
}   
    if(kood==KeyEvent.VK_NUMPAD3){
    int a=x-(int)(raadius*Math.cos(nurk));
    int b=y+(int)(raadius*Math.sin(nurk));
    nurk=nurk+samm;
    p.setColor(Color.black);
    p.drawLine(x, y, a, b);
    repaint();
}   
    if(kood==KeyEvent.VK_NUMPAD1){
    int a=x+(int)(raadius*Math.cos(nurk));
    int b=y+(int)(raadius*Math.sin(nurk));
    nurk=nurk+samm;
    p.setColor(Color.black);
    p.drawLine(x, y, a, b);
    repaint();
}   
   if(kood==KeyEvent.VK_K){
      sammx=15*Math.cos(nurk);
      sammy=15*Math.sin(nurk);
      //System.out.println(sammx+" "+sammy+" "+nurk);
      x=x+(int)sammx;
      y=y-(int)sammy;
      repaint();
    }
   if(kood==KeyEvent.VK_L){
      sammx=15*Math.cos(nurk);
      sammy=15*Math.sin(nurk);
      //System.out.println(sammx+" "+sammy+" "+nurk);
      x=x-(int)sammx;
      y=y+(int)sammy;
      repaint();
    }
}    
  public void keyReleased(KeyEvent e){}
  public void keyTyped(KeyEvent e){}

public static void main(String argumendid[]){
	Frame f=new Frame("Autosőit");
	f.setSize(300, 300);
	f.add(new Eksam2b());
	f.setVisible(true);
	f.addWindowListener(new Raami2kuular());
	}		
}

class Raami2kuular extends WindowAdapter{
	public void windowClosing(WindowEvent e){
		System.exit(0);
	}
}