public class SquareCell extends MazeCell {

    // Code to keep track of how many cells were accessed during the search
    private boolean accessed = false;
    private void    setAccessed() {accessed=true;}
    public  boolean getAccessed() {return accessed;}

    public SquareCell(int cellRow, int cellCol,
		      boolean isStart, boolean isExit,
		      boolean northWall, boolean eastWall, 
		      boolean southWall, boolean westWall) 
    {
	walls = new boolean[] {northWall, eastWall, 
			       southWall, westWall};
	
	numWalls = 0;
	for(int i=0; i < 4; i++) {
	    if(walls[i]) {
		numWalls++;
	    }
	}
	
	isStartCell = isStart;
	isExitCell = isExit;
	
	row = cellRow;
	col = cellCol;
    }
    
    public boolean isStart() {
	setAccessed();
	return isStartCell;
    }
    
    public boolean isExit() {
	setAccessed();
	return isExitCell;
    }
    
    public String toString() {
	return "(" + row + "," + col + ")";
    }
    
    public boolean isWall(Direction d) {
	setAccessed();
	return walls[d.toInt()];
    }
    
    public int getNumWalls() {
	setAccessed();
	return numWalls;
    }
    
    public int getMaxNumWalls() {
	return 4;
    }
    
    public int getRow() {
	setAccessed();
	return row;
    }
    
    public int getCol() {
	setAccessed();
	return col;
    }
    
    private boolean[] walls;
    private int numWalls;
    private boolean isStartCell;
    private boolean isExitCell;
    private int row;
    private int col;
}