/*******************************************
 Pieces applet 1.0 by Tatiana Konstantnova,1999
 *******************************************/

 import java.applet.*;
 import java.awt.*;
 import java.awt.image.*;

 class PiecesFilter extends RGBImageFilter{

   int saturation;
     public PiecesFilter (int saturation) {
  
 canFilterIndexColorModel=true;

 this.saturation=saturation;
	 }

     public int filterRGB (int x,int y,int rgb) {
     
	 int pixcolor=rgb & 0x00FF0000FF;
   int n = (saturation<<24) & 0xFF0000FF;  
	 return (n | pixcolor);

	 }

 }


 public class Pieces extends Applet implements Runnable {
    
	 int halfw;
	 int halfh;
	 
     	 
	int x1=0;
	int x2=51;
	int x3=0;
	int x4=51; 
	int y1=0;
	int y2=0;
	int y3=51;
	int y4=51;

	int oval_x=0;
	int oval_y=0;


	Image p1,p2,p3,p4;
	
	Thread animation=null;

     boolean flag=true;
     boolean filtered=false; 
     int use_filter=1;
	 String tst;
	 	public void init() {
          
  p1=getImage(getCodeBase(),getParameter("ImgLT"));
  p2=getImage(getCodeBase(),getParameter("ImgRT"));
  p3=getImage(getCodeBase(),getParameter("ImgLB"));
  p4=getImage(getCodeBase(),getParameter("ImgRB"));
   halfw=size().width/2;
   halfh=size().height/2;
  
   String s=getParameter("Filter");
  		 	  
   if (s==null) use_filter=1; else
  				  
          use_filter=Integer.parseInt(s);
  
	}



		public boolean mouseDown(Event evt,int x,int y){

		repaint();
		
		if (flag) 
         flag=false;	

		else 
			flag=true;

	return(true);
	}

	public boolean mouseMove (Event evt,int x,int y) {

 
     x1=0;
	 x2=halfw;
	 x3=0;
	 x4=halfw; 
	 y1=0;
	 y2=0;
	 y3=halfh;
	 y4=halfh;

  return(true);
	}

	public void start() {

		if (animation==null) {

 animation=new Thread (this);
 animation.start();


		}

	}

	public void paint (Graphics g) {
        
		int red,green,blue;
        /*get background color */
		String Red=getParameter("Red");
	    String Green=getParameter("Green");
		String Blue=getParameter("Blue");

		if ((Red==null)||(Green==null)||(Blue==null)) {
     /* set default background  if no parameteres entered*/
        red=0;
		green=0;
		blue=4;

		} else {

		
		 red=Integer.parseInt(Red);
		 green=Integer.parseInt(Green);
		 blue=Integer.parseInt(Blue);
		}


		/*draw background*/
		
 Color color=new Color(red,green,blue);// default=0,0,4

  for (int i=0;i<32;i++) {

    g.setColor(color);
    g.fillRect(0,i*5,2*halfw,5);
     color=color.brighter();
  }
   
 /*draw ball*/
  oval_x+=15;
   if (oval_x>2*halfw) oval_x=0;
  oval_y+=10;
   if (oval_y>2*halfh) oval_y=0;

  g.fillOval(oval_x,oval_y,15,15);

  /* draw pieces  */
 g.drawImage(p1,x1,y1,this);
 g.drawImage(p2,x2,y2,this);
 g.drawImage(p3,x3,y3,this);
 g.drawImage(p4,x4,y4,this);
 
   	 if (!flag) {
/* about information when mouse clicked  */
   g.setColor(Color.white);
   g.drawString("welcome.to/lunya",10,10);
   Font default_font=g.getFont();
   g.setColor(  new Color(255,234,10));
  
   Font font =new Font("Helvetica",Font.BOLD,14);
    g.setFont(font);
    g.drawString("Tanya's page",10,50);
	g.setColor(Color.white);
	g.setFont(default_font);
	g.drawString("by Tatiana",10,90);
	g.drawString("Konstantinova",10,100);
		} 
    g.drawString(tst,20,30);
 	}


	public void update(Graphics g){
		paint(g);
	}

	public void run (){
	

		while (animation!=null) {

 
            if (x1<0)
				if (use_filter==1 ) 
				if (filtered) {
				/* use filter  */
	 for (int i=0;i<256;i+=32) {

   ImageFilter f=new PiecesFilter(i);
   ImageProducer producer=new FilteredImageSource(p3.getSource(),f);
   p3=createImage(producer);
 producer=new FilteredImageSource(p2.getSource(),f);
 p2=createImage(producer);
 producer=new FilteredImageSource(p1.getSource(),f);
 p1=createImage(producer);
 producer=new FilteredImageSource(p4.getSource(),f);
 p4=createImage(producer);


	 } 
	 filtered=false;

			} else {
				/* paint without filter  */
			p1=getImage(getCodeBase(),getParameter("ImgLT"));
            p2=getImage(getCodeBase(),getParameter("ImgRT"));
            p3=getImage(getCodeBase(),getParameter("ImgLB"));
            p4=getImage(getCodeBase(),getParameter("ImgRB"));
		
				filtered=true;
			}
			

            /* move pieces  */
			x1-=10;
		  if (x1<-halfw) x1=0;

           y1-=10;
		   if (y1<-halfh) y1=0;

           x2+=10;
		   if (x2>2*halfw) x2=halfw;

		   y2-=10;
		   if (y2<-halfh) y2=0;

           x3-=10;
		  if (x3<-halfw) x3=0;

		  y3+=10;
		  if (y3>2*halfh) y3=halfh;
          
		  x4+=10;
		   if (x4>2*halfw) x4=halfw;

          y4+=10;
		   if (y4>2*halfh) y4=halfh;

	
repaint();
  
try {

 int wait;

 if ((x1==0)&&(x4==halfw)) //pieces united 
	 wait=2000; 
else wait=300;
if (!flag) wait=3000;//clicked for about information

  Thread.sleep(wait);

}
 

catch (InterruptedException e) {}

		}

	}
}