import java.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;

public class canvas extends GameCanvas implements Runnable{

  public LayerManager manager;
  public TiledLayer fon;
  public Thread t;
  public Image img;
 
 public canvas() {
   super( true ); /* zabil? Class nasleduemiy ot Canvas ili GameCanvas dolzhen met super() prichem esli ot canvas to super pustoy esli ot game canvas to v super nado peredat boolevuyu true */
   manager=new LayerManager();
try {
img=Image.createImage("/fon.png");
}
catch( IOException ioe ) {}
   fon=initFon();
   manager.append(fon);
 }

 public void run(){
   Graphics g=getGraphics();
     while(true){
       init(g);
       try{
           Thread.sleep(20); /* staticheskiy method */
       }
       catch(Exception e){
              Form f=new Form("Strange exception");
              main.link.display.setCurrent(f);
       }
    }
 }


 public void init(Graphics g) {
   g.setColor(255,255,255);
   g.fillRect(0,0,128,160);
   manager.paint(g,0,0);
   flushGraphics();
}

 public TiledLayer initFon() { /* imya ne sootvetsvovalo visivaemomu */
 /*  img=Image.createImage("/fon.png"); izobrazheniya zhelatelno sozdavat v bloke try ... catch i v constructore classa */
   TiledLayer tl=new TiledLayer(20,10,img,16,16);
   for(int i=0;i<9;i++){
      for(int j=0;j<20;j++){
         tl.setCell(j,i,0);
      }
   }
   for(int i=0;i<20;i++){
      tl.setCell(i,10,1);
   }
   return tl;
 }

 public void start(){
   t=new Thread(this);
   t.start();
 }

}