public override ILifeBoard NextGeneration(ILifeBoard initial)
{
if (initial == null)
{
throw new ArgumentNullException(nameof(initial));
}
initial.GenerationCount++;
ILifeBoard newCells = new LifeBoardBool(initial.RowCount, initial.ColumnCount, initial.GenerationCount, null);
for (int i = 0; i < initial.RowCount; i++)
{
for (int j = 0; j < initial.ColumnCount; j++)
{
int countNeighbors = CountNeighbors(initial, i, j);
newCells[i, j] = initial[i, j] ?
(countNeighbors == 2 || countNeighbors == 3)
: (countNeighbors == 3);
}
}
return(newCells);
}
static public ILifeBoard FromPattern(IEnumerable <string> initialRows)
{
if (initialRows == null)
{
throw new ArgumentNullException(nameof(initialRows));
}
if (initialRows.Any(l => l == null))
{
throw new ArgumentOutOfRangeException(nameof(initialRows));
}
int rowCount = initialRows.Count();
if (rowCount == 0)
{
throw new ArgumentOutOfRangeException(nameof(initialRows));
}
int colCount = initialRows.Max(l => l.Length);
if (colCount == 0)
{
throw new ArgumentOutOfRangeException(nameof(initialRows));
}
if (rowCount > GetMaxRows() || colCount > GetMaxColumns())
{
throw new ArgumentOutOfRangeException(nameof(initialRows));
}
ILifeBoard cells = new LifeBoardBool(rowCount, colCount, 0, null);
int rowNum = 0;
foreach (var row in initialRows)
{
var l = row;
if (l.Length < colCount)
{
l = l + new string('0', colCount - l.Length);
}
for (int c = 0; c < colCount; c++)
{
cells[rowNum, c] = l[c] == '1' || l[c] == 'X';
}
rowNum++;
}
return(cells);
}
