/// <summary>Move empty cell.</summary>
/// <exception cref="ArgumentNullException"> Thrown when one or more required arguments are
/// null.</exception>
/// <exception cref="IndexOutOfRangeException">Thrown when the index is outside the required
/// range.</exception>
/// <param name="emptyPoint" type="Point">The empty point.</param>
/// <param name="newPoint" type="Point">The new point.</param>
/// <param name="matrix" type="int[,]">The matrix.</param>
public static void MoveEmptyCell(Point emptyPoint, Point newPoint, int[,] matrix)
{
if (matrix == null)
{
throw new ArgumentNullException("The matrix cannot be null");
}
if (emptyPoint == null)
{
throw new ArgumentNullException("The empty point position cannot be null");
}
if (newPoint == null)
{
throw new ArgumentNullException("The new empty point position cannot be null");
}
int matrixSize = matrix.GetLength(0);
bool isNewPointInRange = OutOfMatrixChecker.CheckIfOutOfMatrix(newPoint, matrixSize);
if (isNewPointInRange)
{
throw new IndexOutOfRangeException("The new empty point position is outside the matrix");
}
bool isEmptyPointInRange = OutOfMatrixChecker.CheckIfOutOfMatrix(emptyPoint, matrixSize);
if (isEmptyPointInRange)
{
throw new IndexOutOfRangeException("The new empty point position is outside the matrix");
}
int swapValue = matrix[newPoint.Row, newPoint.Col];
matrix[newPoint.Row, newPoint.Col] = CommonConstants.INITIAL_EMPTY_CELL;
matrix[emptyPoint.Row, emptyPoint.Col] = swapValue;
emptyPoint.Row = newPoint.Row;
emptyPoint.Col = newPoint.Col;
}