/**
 * Controls the stack of sticks used in GameEngine. Contains methods to
 *   manipulate the stack of sticks.
 *
 * @author belinus & timmyt
 * @version 0.1
 */
public class Sticks
{
  // Instance variables
  private int maxNoOfSticks;
  private int sticksLeft;

  // Constructors
  public Sticks( int n )
  {
    maxNoOfSticks = n;
  }
  public Sticks()
  {
    this(21);
  }

  // Methods
  public void newGame()
  {
    sticksLeft = maxNoOfSticks;
  }

  public int sticksLeft()
  {
    return sticksLeft;
  }

  public int take( int n )
  {

        if( n == 1 || n == 2 )
    {
      sticksLeft = sticksLeft - n;
      return sticksLeft;
    }
    else
    {
      // Invalid move
      return -1;
    }
  }
}