public static IEnumerable <MapCoordinate> NeighboursWithinDistance(this MapCoordinate origo, int manhattanDistance)
{
if (manhattanDistance <= 0)
{
throw new ArgumentOutOfRangeException(nameof(manhattanDistance));
}
for (var i = 1; i <= manhattanDistance; i++)
{
foreach (var coordinate in origo.NeighboursOfDistance(i))
{
yield return(coordinate);
}
}
}
public static IEnumerable <MapCoordinate> Neighbours(this MapCoordinate mapCoordinate)
{
return(mapCoordinate.NeighboursOfDistance(1));
}
