public CharactersTreeNode()
{
_id = Guid.NewGuid().ToString();
_parent = null;
_childred = new HashSet <CharactersTreeNode>();
_path = new HashSet <string>();
_path.Add(_id);
}
public CharactersTreeNode()
{
_id = Guid.NewGuid().ToString();
_parent = null;
_childred = new HashSet<CharactersTreeNode>();
_path = new HashSet<string>();
_path.Add(_id);
}
public CharactersTreeNode(string id, CharactersTreeNode parent, IEnumerable <CharactersTreeNode> children)
{
_id = id;
_parent = parent;
_childred = new HashSet <CharactersTreeNode>(children);
_path = new HashSet <string>();
if (parent != null)
{
foreach (string pathNode in parent.Path)
{
_path.Add(pathNode);
}
}
_path.Add(_id);
}
public CharactersTreeNode(string id, CharactersTreeNode parent, IEnumerable<CharactersTreeNode> children)
{
_id = id;
_parent = parent;
_childred = new HashSet<CharactersTreeNode>(children);
_path = new HashSet<string>();
if (parent != null)
{
foreach (string pathNode in parent.Path)
{
_path.Add(pathNode);
}
}
_path.Add(_id);
}
/// <summary>
/// Implements BFS to find all the path from the start node to the end node.
/// NOTE: Needs Character-Characters data to be loaded.
/// </summary>
/// <param name="characterStartId"></param>
/// <param name="characterEnd"></param>
/// <returns></returns>
private List<HashSet<string>> FindAllPaths(string characterStartId, string characterEndId)
{
if (_characterCharactersData == null) return null;
List<HashSet<string>> allPaths = new List<HashSet<string>>();
HashSet<CharactersTreeNode> nodesToExplore = new HashSet<CharactersTreeNode>();
CharactersTreeNode nodeStart = new CharactersTreeNode(characterStartId, null);
nodesToExplore.Add(nodeStart);
CharactersTreeNode curNode = null;
while (nodesToExplore.Count > 0)
{
foreach (CharactersTreeNode node in nodesToExplore)
{
curNode = node;
break;
}
if (curNode.ID.Equals(characterEndId) && (curNode.PathLength() > 1))
{
allPaths.Add(curNode.Path);
}
else if (curNode.PathLength() < LEGTH_THRESHOLD)
{
curNode.LoadChildren(GetConnections(curNode.ID));
foreach (CharactersTreeNode child in curNode.Children)
{
nodesToExplore.Add(child);
}
}
nodesToExplore.Remove(curNode);
}
return allPaths;
}