/// <summary>Randomizes the given matrix.</summary>
/// <exception cref="ArgumentNullException">Thrown when one or more required arguments are null.</exception>
/// <param name="matrix" type="int[,]">The matrix.</param>
/// <returns>A Point.</returns>
public Point Randomize(int[,] matrix)
{
if (matrix == null)
{
throw new ArgumentNullException("The matrix cannot be null or empty");
}
Point emptyPoint = new Point(matrix.GetLength(0) - 1, matrix.GetLength(1) - 1);
if (matrix.GetLength(0) <= 1 && matrix.GetLength(1) <= 1)
{
return(emptyPoint);
}
int randomizeMoves = RandomGenerator.GetRandomNumber(CommonConstants.MIN_MOOVES_RANDOM_NUMBER, CommonConstants.MAX_MOOVES_RANDOM_NUMBER);
for (int i = 0; i < randomizeMoves; i++)
{
int randomDirection = RandomGenerator.GetRandomNumber(MAX_RANDOM_DIRECTION_INDEX);
Point direction = Directions.GetDirection[randomDirection];
Point newEmptyPoint = new Point(emptyPoint.Row + direction.Row, emptyPoint.Col + direction.Col);
if (OutOfMatrixChecker.CheckIfOutOfMatrix(newEmptyPoint, matrix.GetLength(0)))
{
i--;
continue;
}
else
{
EmptyCellMover.MoveEmptyCell(emptyPoint, newEmptyPoint, matrix);
}
}
return(emptyPoint);
}
private void ExecuteMooveCommand(ref int number, int[,] currentMatrix, Point emptyPoint)
{
Point[] directions = Directions.GetDirection;
int directionsCount = directions.GetLength(0);
int matrixLength = currentMatrix.GetLength(0);
Point newPoint = new Point(0, 0);
for (int i = 0; i <= directionsCount; i++)
{
if (i == matrix.GetLength(0))
{
renderer.PrintLine(CommonConstants.INVALID_MOVE);
break;
}
newPoint.Row = emptyPoint.Row + directions[i].Row;
newPoint.Col = emptyPoint.Col + directions[i].Col;
if (OutOfMatrixChecker.CheckIfOutOfMatrix(newPoint, matrixLength))
{
continue;
}
if (currentMatrix[newPoint.Row, newPoint.Col] == number)
{
EmptyCellMover.MoveEmptyCell(emptyPoint, new Point(newPoint.Row, newPoint.Col), currentMatrix);
this.IsPlayerMoved = true;
break;
}
}
}
/// <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;
}
