/// <summary> Use kruskals to find the minimum spanning tree plus a few extra edges. </summary>
/// <param name="basePaths"> All possible paths. </param>
/// <param name="objects"> All rooms. </param>
/// <returns> The final set of paths for this floor. </returns>
private List <FloorPath> Kruskals(List <FloorPath> basePaths, List <Room> objects)
{
List <FloorPath> paths = new List <FloorPath>();
List <FloorPath> extraPaths = new List <FloorPath>();
DisjointSets <Room> disjointSets = new DisjointSets <Room>(objects);
basePaths.Sort((x, y) => x.Distance.CompareTo(y.Distance));
foreach (FloorPath path in basePaths)
{
if (!disjointSets.IsSameSet(path.Start, path.End))
{
disjointSets.Merge(path.Start, path.End);
paths.Add(path);
}
else
{
extraPaths.Add(path);
}
}
int center = (int)(extraPaths.Count * .75f);
if (center + 2 < extraPaths.Count)
{
FloorPath p1 = extraPaths[center];
FloorPath p2 = extraPaths[center + 1];
FloorPath p3 = extraPaths[center + 2];
extraPaths.Remove(p1);
extraPaths.Remove(p2);
extraPaths.Remove(p3);
extraPaths.Insert(0, p1);
extraPaths.Insert(1, p2);
extraPaths.Insert(2, p3);
}
List <FloorPath> finalPaths = new List <FloorPath>();
foreach (FloorPath e in paths)
{
finalPaths.Add(e);
}
int numToAdd = (int)(extraPaths.Count * this.edgeAmount);
for (int i = 0; i < numToAdd; i++)
{
finalPaths.Add(extraPaths[i]);
}
return(finalPaths);
}
private void TryAddPath(Room r1, Room r2, List <FloorPath> basePaths, Floor floor, MiddleLayer upperLayer, MiddleLayer lowerLayer)
{
if (!CheckPathBlocked(r1.Position, r2.Position, r1, r2, 0, floor, upperLayer, lowerLayer))
{
bool duplicate = false;
foreach (FloorPath e in basePaths)
{
if ((e.Start == r1 || e.End == r1) && (e.Start == r2 || e.End == r2))
{
duplicate = true;
}
}
if (!duplicate)
{
List <Edge> edges = FindPath(
r1.Position, r2.Position, r1, r2, new List <Edge>(), 0, floor, upperLayer, lowerLayer);
float dist = 0;
foreach (Edge e in edges)
{
dist += e.Distance;
}
FloorPath path = new FloorPath
{
Start = r1,
End = r2,
Distance = dist,
Width = this.pathWidth,
Edges = edges.ToArray()
};
basePaths.Add(path);
}
}
}