/* Checks if the position FROM is valide\
* throws GameBoardException
* @param Position pos
*/
public void ValidateFromPosition(Position pos)
{
Piece p = this.Board.GetPiece(pos);
if (p == null)
{
throw new GameBoardException("There is no piece in the chosen position!");
}
if (p.Color != this.CurrentPlayer)
{
throw new GameBoardException("The piece chosen is not yours!");
}
if (!p.HasPossibleMoves())
{
throw new GameBoardException("You cannot move the chosen piece!");
}
}
