import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import java.awt.Color;

/**
 * Write a description of class R here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class Room extends Actor {

    static int count = 0;

    public static final int N=0, E=1, S=2, W=3;
    int myNr;
    String[] vecini;

    public Room(){
        super();
        vecini = new String[4];
        myNr = count++;
        updateImage(myNr);
    }
    public void setWall(int dir){
        vecini[dir] =  "W";
        if (dir == W) updateW();
        if (dir == N) updateN();
        if(dir == S) updateS();
        if(dir == E) updateE();
    }
    /**
     * Act - do whatever the R wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act()
    {
        // Add your action code here.
    }

    private void updateImage(int n)
    {
        GreenfootImage img = new GreenfootImage(50,50);
        img.setColor(Color.GRAY);
        img.fill();
        img.setColor(Color.RED);
        img.drawString(Integer.toString(n),10,15);
        setImage(img);
    }

    private void updateW()
    {
        GreenfootImage img = getImage();
        img.drawLine(1,49,1,1);
        setImage(img);
    }

    private void updateN()
    {
        GreenfootImage img = getImage();
        img.drawLine(49,1,1,1);
        setImage(img);
    }

     private void updateE()
    {
        GreenfootImage img = getImage();
        img.drawLine(49,49,49,1);
        setImage(img);
    }
    private void updateS()
    {
        GreenfootImage img = getImage();
        img.drawLine(1,49,49,49);
        setImage(img);
    }

}