public void IsLiveCellAt_GivenCoordsWhereThereIsNoLiveCell_ReturnsFalse()
{
// Arrange
var grid = new Grid();
var coords = Coords.Create(12, 13);
// Act
var actual = grid.IsLiveCellAt(coords);
// Assert
Assert.That(actual, Is.False);
}
public static Grid NextGeneration(Grid currentGrid)
{
var nextGrid = new Grid();
currentGrid.IterateLiveCells((coords, cellState) =>
{
if (CurrentlyAliveCellWillStillBeALiveInTheNextGeneration(currentGrid, coords))
{
nextGrid.MarkLiveCellAt(coords);
}
else
{
nextGrid.MarkWasPreviouslyAliveCellAt(coords);
}
foreach (var neighbour in coords.Neighbours())
{
if (!currentGrid.IsLiveCellAt(neighbour))
{
if (CurrentlyDeadCellWillBecomeALiveInTheNextGeneration(currentGrid, neighbour))
{
if (currentGrid.CellWasPreviouslyAliveAt(neighbour))
{
nextGrid.MarkZombieCellAt(neighbour);
}
else
{
nextGrid.MarkLiveCellAt(neighbour);
}
}
}
}
});
return nextGrid;
}
