Exemple #1
0
    public List <PathNode> FindPath(string startSystem, string endSystem)
    {
        ClearPathData();

        PathNode start = nodes[startSystem],
                 end   = nodes[endSystem];

        AddToOpenSet(start, null, end, 0.0f);

        while (openSet.Count > 0)
        {
            // Take the node off the top of the open set and add it to the closed set
            PathNode current = openSet[0];
            openSet.RemoveAt(0);
            current.Closed = true;

            if (current == end)
            {
                List <PathNode> path = new List <PathNode>();
                while (current != null)
                {
                    path.Insert(0, current);
                    current = current.Parent;
                }
                return(path);
            }

            // Add its neighbors to the open list
            if (current.Neighbors == null)
            {
                current.ComputeNeighbors(nodes.Values.ToList(), jump);
            }
            foreach (KeyValuePair <PathNode, float> pair in current.Neighbors)
            {
                if (pair.Key.Closed)
                {
                    continue;
                }
                AddToOpenSet(pair.Key, current, end, pair.Value);
            }
        }
        return(null);
    }