internal List <Location> FindAdjacent(List <int> allowedDelta, List <Location> excludedComb, List <Location> excludedOddRowComb, List <Location> excludedEvenRowComb, bool wrap, List <int> gridSize)
{
// for every dimension, we must allow for -1, 0, +1 states
// this is really a variations / repitition problem, for the mapping (-1,0,-1) select "dimensions" of them
List <Location> outList = new List <Location>();
JPD.Combinatorics.Variations <int> var = new Variations <int>((uint)index.Count, 3, true, allowedDelta);
for (var.First(); !var.AtEnd; var.Next())
{
bool exclude = (excludedComb != null && excludedComb.Contains(new Location(var.Current.ToList()))) ||
((index[0] % 2 == 1) && excludedOddRowComb != null && excludedOddRowComb.Contains(new Location(var.Current.ToList()))) ||
((index[0] % 2 == 0) && excludedEvenRowComb != null && excludedEvenRowComb.Contains(new Location(var.Current.ToList())));
if (!exclude)
{
Location l = new Location();
for (int d = 0; d < index.Count; d++)
{
int target = index[d] + var.Current[d];
if (wrap)
{
target = (target + gridSize[d]) % gridSize[d];
}
l.Add(d, target);
}
outList.Add(l);
}
}
return(outList);
}