public static int[,] RunAutomataTimestep(int[,] grid, int[] born, int[] survive)
{
var newgrid = new int[grid.GetLength(0), grid.GetLength(1)];
var neighbors = CellularAutomata.Convolve(grid, FeatureFilters.NeighborCount);
Debug.WriteLine(neighbors.Total());
for (int x = 0; x < grid.GetLength(0); x++)
{
for (int y = 0; y < grid.GetLength(1); y++)
{
if (grid[x, y] == 1 && survive.Contains(neighbors[x, y]))
{
newgrid[x, y] = 1;
}
else if (grid[x, y] == 0 && born.Contains(neighbors[x, y]))
{
newgrid[x, y] = 1;
}
else
{
newgrid[x, y] = 0;
}
}
}
return(newgrid);
}
public void ConvoleTest()
{
var grid = CellularAutomata.RandomFill(10, 15);
var conv = CellularAutomata.Convolve(grid, FeatureFilters.Identity);
var gTotal = grid.Total();
var cTotal = conv.Total();
Assert.AreEqual(gTotal, cTotal);
}
public static int[,] GenerateCaves(int width, int height, double density = 0.45)
{
// caves B678/S345678
var grid = CellularAutomata.RandomFill(width, height, density);
int[] born = new[] { 6, 7, 8 };
int[] survive = new[] { 3, 4, 5, 6, 7, 8 };
for (int i = 0; i < 5; i++)
{
grid = CellularAutomata.RunAutomataTimestep(grid, born, survive);
}
return(grid);
}
public void TimeSteptest()
{
var w = 100;
var h = 150;
var grid = CellularAutomata.RandomFill(w, h, 0.45);
// caves B678/S345678
int[] born = new[] { 6, 7, 8 };
int[] survive = new[] { 3, 4, 5, 6, 7, 8 };
for (int i = 0; i < 5; i++)
{
grid = CellularAutomata.RunAutomataTimestep(grid, born, survive);
Debug.WriteLine(grid.ToRowString(asMap: true));
}
}
public void RandomFillTest()
{
var w = 10;
var h = 10;
var total = 0;
for (int i = 0; i < 100; i++)
{
var result = CellularAutomata.RandomFill(h, w);
total += result.Total();
}
var expected = w * h / 2;
var avg = total / 100;
var epsilon = w * h / 4;
Assert.AreEqual(expected, avg, epsilon);
}