import java.io.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.net.*;

public class FastCode extends Applet implements KeyListener {

    String code = "";
    String text = "";
    int cur = 0;
    int shift = 0;
    int lines = 0;
    
    Graphics buf;
    Image mem;

    String line = "";
    int x = 40, y = 60;

    Image bg = null;
    
    
    public void init() {
	
	
	try {
	    
	    String s = null;
	    URL file = new URL(getCodeBase(), "FastCode.java");
	    DataInputStream dis = new DataInputStream(file.openStream());
	    while((s=dis.readLine()) != null)
		code += s+"\n#";
	    
	    dis.close();
	    dis = null;

	} catch(IOException ioe) {
	    
	    ioe.printStackTrace();

	}
	
	MediaTracker mt = new MediaTracker(this);
	bg = getImage(getCodeBase(), "bg.jpg");
	mt.addImage(bg, 1);
	
	try {
	    mt.waitForAll();
	} catch(InterruptedException ie) {
	    ie.printStackTrace();
	}
	
	addKeyListener(this);
	
	mem = createImage(640, 480);
	buf = mem.getGraphics();
	
	buf.drawImage(bg, 0, 0, this);
	repaint();
	
    }
    
    
    public void paint(Graphics g) {

	update(g);

    }


    public void update(Graphics g) {

	g.drawImage(mem, 0, 0, this);

    }
    

    public void keyPressed(KeyEvent ke) {
	
	text += code.substring(cur, cur+1);
	
	y = 60+shift;
	x = 40;

	buf.drawImage(bg, 0, 0, this);
	
	StringTokenizer st = new StringTokenizer(text, "#");
	lines = st.countTokens();
	
	shift = (25-lines)*15;
	if(shift > 0) shift = 0;
	
	while(st.hasMoreTokens()) {
	    
	    line = st.nextToken();
	    x = 40;
	    
	    int ind = 0;
	    while(line.substring(ind, ind+1).equals("\t") && ind < line.length() - 1) {
		x += 30;
		ind++;
	    }
	    
	    
	    if(y >= 60) {
		
		line = line.substring(ind);
		
		if(line.endsWith("\n"))
		    line = line.substring(0, line.length()-1);
		
		buf.setColor(new Color(255, 235, 205));
		buf.drawString(line, x, y);
		
		repaint();

	    }
	    
	    y += 15;
	    
	}
	
	cur++;
	
	if(cur >= code.length()) { 
	    cur = 0;
	    y += 45;
	}
	
    }

    public void keyReleased(KeyEvent ke) {}
    public void keyTyped(KeyEvent ke) {}

}