/// <summary>
/// Finds the number of neighbours of a given cell that meet the passed in specification.
/// </summary>
/// <param name="cell">Cell whose neighbours have to be found.</param>
/// <param name="specification">The specification that should be met by the neighbouring cells.</param>
/// <returns>Returns the collection of cells that meet the passed in specification.</returns>
public ICollection<Cell> FindNeighbours(Cell cell, ISpecification<Cell> specification)
{
List<Cell> cells = new List<Cell>();
if (cell == null)
{
throw new ArgumentNullException(paramName:"Cell");
}
int column = cell.ColumnNumber;
int row = cell.RowNumber;
int startrow;
int startcol;
int endcol;
int endrow;
GetValidStartRowAndColumn(row, column, out startrow, out startcol);
GetValidEndRowAndColumn(row, column, out endrow, out endcol);
for (int xcoord = startrow; xcoord <= endrow; xcoord++)
{
for (int ycoord = startcol; ycoord <= endcol; ycoord++)
{
if (!(xcoord == row && ycoord == column))
{
if (specification == null)
cells.Add(grid[xcoord, ycoord]);
else
if(specification.IsSatisfiedBy(grid[xcoord, ycoord]))
cells.Add(grid[xcoord, ycoord]);
}
}
}
return cells;
}
/// <summary>
/// Evolves the cell by applying the evolution rules.
/// </summary>
/// <param name="cell">Cell to evolve.</param>
/// <returns>Returns the evolved cell.</returns>
public Cell EvolveCell(Cell cell)
{
if(cell == null)
{
throw new ArgumentNullException(paramName:"Cell");
}
Cell evolvedcell = new Cell(cell.RowNumber, cell.ColumnNumber, false);
int aliveneighbours = neighbourRule.FindNeighbours(cell, aliveSpecification).Count;
if ((cell.IsAlive && (aliveneighbours == 2 || aliveneighbours == 3)) || (!cell.IsAlive) && aliveneighbours == 3)
{
evolvedcell.IsAlive = true;
}
return evolvedcell;
}
public Grid(int rowCount, int columnCount)
{
if ((rowCount <= 0 || columnCount <= 0) && (rowCount> 100000 || columnCount> 100000))
{
throw new ArgumentOutOfRangeException("The rowCount and columnCount should be greater than 0 and less than 100000.");
}
this.rowCount = rowCount;
this.columnCount = columnCount;
cells = new Cell[rowCount][];
for (int i = 0; i < rowCount; i++)
{
cells[i] = new Cell[columnCount];
for (int j = 0; j < columnCount; j++)
{
cells[i][j] = new Cell(i, j, false);
}
}
}
public static void MyClassInitialize(TestContext testContext)
{
alivecell = new Cell(0, 0, true);
deadcell = new Cell(0, 0, false);
}