// (c) 1998 Ekkehard Kraemer (ekraemer@pluto.camelot.de)

import java.awt.*;

/**
 * Sorry, not documented yet.
 * <p>
 * <a href="Stats.txt">Source</a>
 */
class Stats extends Canvas implements Runnable
{
    Stats()
    {
	super();
	resize(0,Images.ball.getHeight(null)*2);
	setBackground(Color.black);
	thread.start();
    }

    public void run()
    {
	try
        {
	    while (!stopNow)
	    {
		synchronized(this)
		{
		    if (addPoints>0)
		    {
			int transfer=addPoints/8;
			if (transfer<1) transfer=1;
			if (transfer>addPoints) transfer=addPoints;
			points+=transfer;
			addPoints-=transfer;

			Graphics g=getGraphics();
			g.setColor(Color.black);
			g.fillRect(10,5,10*ledtext.skip,100);
			drawPoints(g);		
			g.dispose();
		    }
		    else wait();
		}
		Thread.sleep(50);
	    }
	} catch (Exception e) { e.printStackTrace(System.err); }	
    }
    
    synchronized public void paint(Graphics g)
    {
	super.paint(g);

	int w=size().width;
	int h=size().height;
	if (w!=width || h!=height) 
	    {
		width=w;
		height=h;
		repaint();
		return;
	    }

	drawBalls(g);
	drawPoints(g);
	drawBullets(g);
    }

    synchronized void drawBalls(Graphics g)
    {
	if (ballWidth<0)
	    {
		ballWidth=Images.ball.getWidth(null);
		ballHeight=Images.ball.getHeight(null);
		if (ballHeight<=0) return;
	    }
	

	for (int t=0; t<balls; t++)
	    g.drawImage(Images.ball,
			width-ballWidth*(t+2),
			ballY,null);
    }

    synchronized void drawPoints(Graphics g)
    {
	g.setColor(Color.yellow);
	ledtext.draw(g,10,5,""+points);
    }

    synchronized void drawBullets(Graphics g)
    {
	g.setColor(Color.lightGray);
	for (int t=0; t<maxBullets; t++)
	{
	    if (t==bullets) g.setColor(Color.black);
	    g.drawLine(width-ballWidth-t*4,height-4,
		       width-ballWidth-t*4,height-8);
	}
    }

    synchronized boolean decBalls()		// false -> no balls left
    {
	if (balls>0)
	    {
		Graphics g=getGraphics();
		g.setColor(Color.black);
		g.fillRect(width-ballWidth*(balls+1),
			   ballY,ballWidth,ballHeight);
		g.dispose();
		balls--;
	    }
	return balls>0;
    }

    synchronized void incBalls()
    {
	Graphics g=getGraphics();
	g.drawImage(Images.ball,
		    width-ballWidth*(balls+2),
		    ballY,null);
	g.dispose();
	balls++;
    }

    synchronized void setBalls(int b)
    {
	balls=b;
	repaint();
    }

    boolean noBallLeft()
    {
	return balls<1;
    }

    synchronized void addPoints(int p)
    {
	addPoints+=p;
	notifyAll();
    }

    synchronized void addBullets()
    {
	bullets+=5;
	Graphics g=getGraphics();
	drawBullets(g);
	g.dispose();
    }

    synchronized boolean killBullet()
    {
	if (bullets>0)
	    {
		bullets--;
		Graphics g=getGraphics();
		drawBullets(g);
		g.dispose();
		return true;
	    }
	return false;
    }

    int width=-1,height=-1;
    int ballWidth=-1,ballHeight=-1,ballY=5;
    int balls=3;
    int points=0,addPoints=0;
    LEDText ledtext=new LEDText();
    Thread thread=new Thread(this);
    boolean stopNow=false;
    int bullets=10,maxBullets=50;
}