private void Walk(Point p)
{
//< Get all the cardinal directions that need checking
var pointsToCheck = GetPointsToCheck(p);
foreach (var point in pointsToCheck)
{
if (this.PointMap.ContainsKey(point.Item1))
{
continue;
}
//< Get the movement result and add that point to the PointMap
var moveRes = MoveInDirection(point.Item2);
this.PointMap.Add(point.Item1, moveRes);
//< If non-zero movement result, handle
if (moveRes != 0)
{
//< Walk new point, then take back the movement
Walk(point.Item1);
//< Get the opposite direction to our present movement, move that way
var oppositeDir = CardinalDirections.GetOppositeDirection(point.Item2);
MoveInDirection(oppositeDir);
if (moveRes == 2)
{
PointMap[point.Item1] = 1;
Target = new Point(point.Item1.X, point.Item1.Y);
}
}
}
}
private void FloodFill(Point start)
{
var toProc = new Stack <Point>();
toProc.Push(start);
while (toProc.Count > 0)
{
var p = toProc.Pop();
var cardinals = CardinalDirections.GetCardinalPointsAround(p).Select(c => c.Item1);
foreach (var point in cardinals)
{
if (Maze[point.Y, point.X] != 0)
{
//< If un-explored, fill it in
if (Explored[point.Y, point.X] == false)
{
//< Set the flood value to 1 more than the the previous point
FloodLevels[point.Y, point.X] = FloodLevels[p.Y, p.X] + 1;
//< Add this point to be filled
toProc.Push(point);
}
}
}
//< Set the current point as seen
Explored[p.Y, p.X] = true;
}
}
private List <Tuple <Point, long> > GetPointsToCheck(Point p)
{
//< Get all the cardinal positions around this point
var cardinals = CardinalDirections.GetCardinalPointsAround(p);
//< Return those that ain't been explored
return(cardinals.Where(c => IsUnexplored(c.Item1)).ToList());
}
