/* Copyright (C) 2003  Pehr Johansson <pehr@mcats.net> */
import java.awt.Graphics;
import java.awt.Font;
import java.awt.Color;
import java.awt.Image;
import java.awt.image.MemoryImageSource;
import java.util.Random;
import java.awt.image.IndexColorModel;

public class Fire extends java.applet.Applet {

	public void paint(Graphics g) {
		long startTime = System.currentTimeMillis();
		System.out.println("Start: " + startTime);
		Image img;
		Random rnd = new Random();
		setBackground(Color.black);

		int w = 640;
		int h = 480;
		int pix[] = new int[(w * h) + w*7];
		int index = 0;

		for( int i=0; i < w; i++) {
				pix[(w*h)-w-h+i] = rnd.nextInt(50)+200;
		}

		/* Start main loop */
		for(int loop=0; loop < 250000; loop++) {

			for( int i=0; i < w; i++) {
				pix[(w*h)-w-h+i] = (255 << 24) | ( rnd.nextInt(150)+100 << 16 ) | 0;
			}

			int loop2=0;
			while( loop2++ < h*w )
			{
				int red = ((((pix[loop2+w-1] & 0x00ff0000) >> 16) + ((pix[loop2+w] & 0x00ff0000) >> 16) + ((pix[loop2+w+1] & 0x00ff0000) >> 16) + ((pix[loop2+w*2] & 0x00ff0000) >> 16)) >> 2);
				if( red > 0 )
					red--;
				pix[loop2] = (255 << 24) | ( red << 16 ) | 0;
			}



			img = createImage(new MemoryImageSource(w, h, pix, 0, w));

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

		}
		long endTime = System.currentTimeMillis();
		System.out.println("End: " + endTime);
		System.out.println("TotalTime: " + (endTime-startTime) + "ms (" + (endTime-startTime)/1000 + "s)");
		System.out.println("FPS: " + 25/((endTime-startTime)/1000));
	}
}