// EkenFire.java
// Welcome to Eken Animation Applet
// by nagatani@eken.phys.nagoya-u.ac.jp

import java.awt.*;

public class EkenFire extends EkenFireSub implements Runnable {

	Thread		thread;
	Image		imImage;		// double buffering image
	Graphics	gImage;
	int		interval;		// interval (m.sec.)
	
	public void init () {
		
		Color	bg = getColorParameter ("bgcolor");
		if (bg != null)
			setBackground (bg);
		else
			setBackground (
				new Color (Integer.parseInt ("000080", 16)));
		
		interval = 100;
		String	sValue = getParameter ("interval");
		if (sValue != null)
			interval = Integer.parseInt (sValue);
		if (interval < 0)
			interval = 0;
		
		imImage = createImage (size().width, size().height);
		gImage = imImage.getGraphics ();
		
		super.init();
	}
	
	public void paint (Graphics g) {
		
		super.paint (gImage);
		g.drawImage (imImage, 0, 0, this);
	}
	public void update (Graphics g) {
 	
		this.paint (g);
	}
	public void run () {
	
		while (thread.isAlive ()) {
			repaint ();
			super.move ();
			try {
				Thread.sleep (interval);	// Delay Time
			} catch (InterruptedException e) {}
		}
	}
	public void start () {
		
		if (thread == null) {
			thread = new Thread (this);
			thread.start();		// starting thread
		}
	}
	public void stop () {
	
		if (thread != null) {
			thread.stop ();		// stop thread
			thread = null;		// destroy thread
		}
	}
	
	public boolean mouseDown (Event e, int x, int y) {
	
		if (thread != null)
			this.stop();
		else
			this.start();
		return true;
	}
	
	public Color getColorParameter (String name) {
		
		String	value = getParameter (name);
		int	nColor;
		try {nColor = Integer.parseInt (value, 16);}
		catch (NumberFormatException e) {
			return	null;
		}
		return	new Color (nColor);
	}
	
	public String[][] getParameterInfo () {
		
		String info[][] = {
			{"Dynamical", "(existence of this)",
				"Dynamical Fire Image"},
			{"Grid", "(existence of this)",
				"Grid Image"},
			{"interval", "integer",
				"flush interval (mili second)"},
			{"bgcolor", "rrggbb (HEX)",
				"background RGB color"}
		};
		return	info;
	}
	public String getAppletInfo () {
		
		return	"EkenFire Applet\n" +
			"Copyright(C) 1997,1998 Y.Nagatani\n" +
			"nagatani@eken.phys.nagoya-u.ac.jp";
	}
}