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;
}