private void ProcessLocation(int currentDistance, Entities.Grid grid, Entities.GridLocation startPoint, Entities.GridLocation endPoint)
{
var currentPoint = startPoint;
if (!currentPoint.DistanceFromStart.HasValue ||
currentPoint.DistanceFromStart.Value > currentDistance)
{
currentPoint.DistanceFromStart = currentDistance;
for (int xDelta = -1; xDelta < 2; xDelta++)
for (int yDelta = -1; yDelta < 2; yDelta++)
{
var newLocation = grid.TraversableLocationAtOffset(currentPoint, xDelta, yDelta);
if (newLocation != null)
ProcessLocation(currentDistance + 1, grid, newLocation, endPoint);
}
}
}