public long CountNumberOfD3Cubes()
{
for (var iteration = 0; iteration < 6; iteration++)
{
IterateCubes();
}
return(D3Cubes.Count(x => x.IsActive));
}
private void IterateCubes()
{
var grid = new List <D3Cube>();
foreach (var neighbour in D3Cubes
.Where(c => c.IsActive)
.Select(cube => cube.GetNeighbours())
.SelectMany(neighbours => neighbours))
{
if (grid.Any(x => x.Location == neighbour))
{
continue;
}
var current = D3Cubes.Any(c => c.Location == neighbour)
? D3Cubes.FirstOrDefault(c => c.Location == neighbour)
: new D3Cube(neighbour);
var activeNeighbours = D3Cubes
.Count(c =>
current.GetNeighbours().Contains(c.Location) &&
c.Location != current.Location &&
c.IsActive
);
if (activeNeighbours == 3 || (current.IsActive && activeNeighbours == 2))
{
current.IsActive = true;
}
else
{
current.IsActive = false;
}
grid.Add(current);
}
D3Cubes = grid;
}