//
//	This code was written by Ariel Dolan
//	Site	http://www.aridolan.com
//	Email	aridolan@netvision.net.il
//
//	You are welcome to do whatever you wish with this code, as long as you
//	add appropriate credits.
//


import java.applet.*;
import java.awt.*;
import java.net.*;



class FloyCanvas extends Canvas
{
	Image image;
	Color color;
	boolean first;
	boolean reset;

	public FloyCanvas(Image img)	{

		super();
 		image = img;
		color = Color.white;
		setBackground(Color.black);
		setForeground(Color.white);
		first = true;
		reset = false;

	}

	public FloyCanvas(Color c)	{

		super();
 		image = null;
		setBackground(Color.black);
		setForeground(Color.white);
		color = c;
		first = true;
		reset = false;

	}

	public void Clear() {

		reset = true;
		repaint();

	}


	public void paint(Graphics g) {

		int i;
		Floy floy;

		if (reset) {
			g.setColor(Color.black);
			g.fillRect(0,0,size().width,size().height);
			reset = false;
			return;
		}

		if (image != null)
			g.drawImage(image,0,0,this);
		else {
		}

		for (i=0;i<Floys.floys.length;i++)
	 	{
			floy = Floys.floys[i];
			floy.GetNeighbors();
	 		floy.Process();
			floy.Draw(g);
	 	}


	}

	Graphics GetGra() {

		return this.getGraphics();
	}
}

public class Floys extends Applet implements Runnable {

	Thread runner;
	FloyCanvas canvas;
	FloyControl fcontrol;
	static Floy[] floys;
	Button Start;
	Button Pause;
	Button Stop;
	Button Control;
	Button Kick;
	Button Slower;
	Button Faster;
	Button Default;
	Button Test;
	Button Quit;
	Graphics gra;
	Panel ControlPanel;
	URL MainPage;
	Font ButtonFont;

	int wa,ha,wc,hc;
	int CurrentBehavior;
	boolean running;
	static boolean First;

	static int NF;
	static int REVDIST;
	static float ACC;
	static float ACCTOMID;	
	static float MAXSPEED;
	static float BOUNCESPEED;
	static float V0;
	static float KICK;
	static int SLEEP;
	static int MARGIN;
	static int NUMNB;
	static int TYPE;

	static AudioClip joy;
	static AudioClip beep;
    static Image picture;
    static AppletContext appcontext;


	public void init() {
		int i;
		Float temp;
		String s;

		ButtonFont = new Font("TimesRoman",Font.PLAIN,12);
		reset();

		s=getParameter("NF");
		if (s==null)
			NF=15;
		else NF = Integer.parseInt(s);
		s=getParameter("REVDIST");
		if (s==null)
			REVDIST=200;
		else REVDIST = Integer.parseInt(s);
		s=getParameter("ACCTOMID");
		if (s==null)
			ACCTOMID=0.1f;
		else {
				temp=new Float(s);
				ACCTOMID = temp.floatValue();
			}
		s=getParameter("ACC");
		if (s==null)
			ACC=0.3f;
		else {
				temp=new Float(s);
				ACC = temp.floatValue();
			}
		s=getParameter("MAXSPEED");
		if (s==null)
			MAXSPEED=5f;
		else {
				temp=new Float(s);
				MAXSPEED = temp.floatValue();
			}
		s=getParameter("BOUNCESPEED");
		if (s==null)
			BOUNCESPEED=.8f;
		else {
				temp=new Float(s);
				BOUNCESPEED = temp.floatValue();
		}

		setLayout(new BorderLayout());

		Panel bot = new Panel();
		Start = new Button(" Start ");
		Pause = new Button(" Pause ");
		Stop = new Button(" Stop ");
		Control = new Button(" Properties ");
		Kick = new Button(" Behavior ");
		Slower = new Button(" Slower ");
		Faster = new Button(" Faster ");
		Default = new Button(" Default ");
		Test = new Button(" Stranger ");
		Quit = new Button(" Quit ");

		bot.setFont(ButtonFont);

		bot.add(Start);
		bot.add(Pause);
		bot.add(Stop);
		bot.add(Control);
		bot.add(Slower);
		bot.add(Faster);
		bot.add(Default);
		bot.add(Test);
		//bot.add(Quit);
		add("South",bot);

	    appcontext = getAppletContext();
		picture = getImage(getCodeBase(),"floys1.gif");
		joy = getAudioClip(getCodeBase(), "joy.au");
		beep = getAudioClip(getCodeBase(), "Beep.au");

		canvas = new FloyCanvas(Color.red);
		//canvas = new FloyCanvas(picture);
		add("Center",canvas);
		canvas.repaint();
		gra = canvas.GetGra();

		CurrentBehavior = 0;
		First = true;

	}

	public void start()
	{
		if (runner == null)
		{
			runner= new Thread(this);
			runner.start();
			running = true;
		}
	}
	
	public void stop()
	{
		if (runner!=null)
		{
			runner.stop();
			runner=null;
			running = false;
		}
	}

	public void run() {

		int i;
		Floy floy;

		if (First) {
			hc = canvas.size().height;
			wc = canvas.size().width;
			ha = this.size().height;
			wa = this.size().width;
			floys = new Floy[NF];
			for (i=0;i<NF;i++) {
				floys[i] = new Floy("EBGHIJ",i, wc,hc,0,200,Color.green);
			}
		
			randemize();
			First = false;
		}
	
		gra.setColor(Color.white);
		while (true) {
			/*
			for (i=0;i<NF;i++)
		 	{
				floy = floys[i];
				floy.GetNeighbors();
		 		floy.Process();
				floy.Draw(gra);
				showStatus("x= "+floy.x+" y = "+floy.y+" vx= "+floy.vx+" vy= "+floy.vy);
		 	}
			*/
		 	if (Math.random()< (double) KICK) randemize();
		 	canvas.repaint();
		 	try { Thread.sleep(SLEEP);}
		 	catch (InterruptedException e) {
			}
		}
		


	}

	public void randemize()
	{
		int i,j,k,n;

		for (k=0;k<NF;k++) {
			Floy ng = floys[k];
			for (j=0;j<ng.numnb;j++) {
				n =(int) (Math.random()*NF);
				//if (n == k) {
				//	if (n == 0) n++;
				//	else n--;
				//}
				ng.neighbors[j] = floys[n];
			}
		}
	}


	static public void reset() {

		NF = 15;
		REVDIST = 200;
		ACC = 0.3f;
		ACCTOMID = 0.1f;	
		MAXSPEED = 5f;
		BOUNCESPEED = 0.8f;
		V0 = 4;
		KICK = (float) 0.05;
		SLEEP = 10;
		MARGIN = 30;
		NUMNB = 2;
		TYPE = 0;

		//showStatus("Default Behavior");

	}


	private void ChangeBehavior(int num) {

		switch (num) {
			case 0:	{
				REVDIST = 200;
				ACC = 0.3f;
				ACCTOMID = 0.1f;	
				MAXSPEED = 5f;
				BOUNCESPEED = 0.8f;
				V0 = 4;
				KICK = (float) 0.05;
				SLEEP = 10;
				MARGIN = 30;
				NUMNB = 2;
				showStatus("Default Behavior");
				break;
			}
			case 1:	{
				REVDIST = 200;
				ACC = 0.05f;
				ACCTOMID = 0.05f;	
				MAXSPEED = 3f;
				BOUNCESPEED = 0.5f;
				V0 = 4;
				KICK = (float) 0.05;
				SLEEP = 10;
				MARGIN = 30;
				NUMNB = 2;
				showStatus("Calm Behavior");
				break;
			}
			case 2:	{
				REVDIST = 200;
				ACC = 0.6f;
				ACCTOMID = 0.2f;	
				MAXSPEED = 5f;
				BOUNCESPEED = 0.8f;
				V0 = 4;
				KICK = (float) 0.05;
				SLEEP = 10;
				MARGIN = 30;
				NUMNB = 2;
				showStatus("Busy Behavior");
				break;
			}
			case 3:	{
				REVDIST = 100;
				ACC = 0.9f;
				ACCTOMID = 0.4f;	
				MAXSPEED = 10f;
				BOUNCESPEED = 2.0f;
				V0 = 4;
				KICK = (float) 0.05;
				SLEEP = 10;
				MARGIN = 30;
				NUMNB = 2;
				showStatus("Frantic Behavior");
				break;
			}

		}

	}

	public boolean action(Event evt, Object o) {

		int i;
		Floy floy;
		boolean rt = false;

		if(evt.target == Quit) {
			showStatus("Quit");
			//destroy();
			//System.exit(0);
			try {
				MainPage = new URL("JavaFloys.html");
				appcontext.showDocument(MainPage);
			}
			catch (MalformedURLException e){
			}
			rt=true;
		}
		else if (evt.target == Start) {
			start();
			//gra.setColor(Color.red);
			//gra.fillRect(10,10,wc-20,hc-20);
			//showStatus("gra color = "+gra.getColor().toString());
			//canvas.repaint();
			rt = true;
		}

		else if (evt.target == Pause) {

			if (running) {
				stop();
				running = false;
				Pause.setLabel("Continue");
			}
			else {
				start();
				running = true;
				Pause.setLabel("Pause");
			}
			rt = true;
		}

		else if (evt.target == Stop) {
			
			stop();
			canvas.Clear();

		}

		else if (evt.target == Control) {
			
			stop();
			canvas.Clear();
			//First = false;
			fcontrol = new FloyControl(floys);
			showStatus("Custom Behavior");
			//start();
		}

		else if (evt.target == Test) {
			
			floys[0].type =1;
			floys[0].color = Color.magenta;
			floys[0].energy = 100;
			floys[0].x = 0;
			floys[0].y = 0;

		}

		else if (evt.target == Default) {
			

			floys[0].type = 0;
			floys[0].color = Color.green;
			floys[0].energy = 100;

			reset();
			stop();
			First = true;
			showStatus("Default Behavior");
			start();

		}

		else if (evt.target == Kick) {
			
			joy.play();
			if (CurrentBehavior == 3)
				CurrentBehavior = 0;
			else
				CurrentBehavior++;
			ChangeBehavior(CurrentBehavior);

			stop();
			First = true;
			start();
		}

		else if (evt.target == Slower) {
			if (SLEEP < 10)
				SLEEP++;
			else if (SLEEP < 150)
				SLEEP += 10;
		}

		else if (evt.target == Faster) {
			if (SLEEP > 10)
				SLEEP -= 10;
			else if (SLEEP > 1)
				SLEEP--;
		}


		else {
			rt = true;
		}

		//showStatus("evt.target= "+evt.target.toString());
		return rt;
	}

	public boolean handleEvent(Event evt) {

		if(evt.id == Event.WINDOW_DESTROY) {
			showStatus("Window Distroy");
			destroy();
			System.exit(0);
		}

		return super.handleEvent(evt);
	}


	private void ScrollbarPanel() {
		ControlPanel = new Panel();
		ControlPanel.setLayout(new GridLayout(2,4));
		Label l1 = new Label("Number of Floys");
		Label l2 = new Label("Collision Distance");
		Label l3 = new Label("Acceleration");
		Label l4 = new Label("Adhesion");
		Label l1a = new Label("");
		Label l2a = new Label("");
		Label l3a = new Label("");
		Label l4a = new Label("");
		Scrollbar b1 = new Scrollbar(Scrollbar.HORIZONTAL);
		Scrollbar b2 = new Scrollbar(Scrollbar.HORIZONTAL);
		Scrollbar b3 = new Scrollbar(Scrollbar.HORIZONTAL);
		Scrollbar b4 = new Scrollbar(Scrollbar.HORIZONTAL);
		ControlPanel.add(l1);
		ControlPanel.add(l2);
		ControlPanel.add(l3);
		ControlPanel.add(l4);
		ControlPanel.add(b1);
		ControlPanel.add(b2);
		ControlPanel.add(b3);
		ControlPanel.add(b4);
		add("North",ControlPanel);
	}


}