/**
* This class models one square on the 2048 board.
* A square can be empty, denoted by 0;
* or it can hold a tile with a number in {2,4,8,16,32,64,...}.
*
* @author Lyndon While
* @version 1.0
*/
public class Square
{
public static void main(String[] args) {
Square sqr1 = new Square(32);
System.out.println(sqr1.getSquare());
}
private int x; // the value of the tile sitting on the square, or 0 for empty
// create a square with the value x, or empty if x is not legal
public Square(int x)
{
try
{
setSquare(x);
}catch (Exception e)
{
System.out.println(e);
}
}
// return the current value of the square
public int getSquare()
{
return x;
}
// return true iff the square is empty
public boolean isEmpty()
{
return x == 0;
}
// put a tile of value x on the square, if x is legal;
// otherwise throw an Exception with a suitable error message
public void setSquare(int x) throws Exception
{
if ((x & (x - 1)) == 0)
{
this.x = x;
}
else
{
throw new Exception("Not valid input");
}
}
}
