public void PopulateNodes()
{
_nodesWithLinksFrom = new Dictionary <string, HashSet <string> >();
_nodesWithLinksTo = new Dictionary <string, HashSet <string> >();
if (_lines != null && _lines.Any())
{
Debug.Log("Deleting lines");
foreach (var line in _lines.Values)
{
line.Destroy();
Destroy(line.gameObject);
}
}
if (_nodeButtons != null && _nodeButtons.Any())
{
Debug.Log("Deleting buttons");
foreach (var button in _nodeButtons.Values)
{
Destroy(button.gameObject);
}
}
if (_floatingNodeButtons != null && _floatingNodeButtons.Any())
{
Debug.Log("Deleting floating buttons");
foreach (var floatingButton in _floatingNodeButtons.Values)
{
Destroy(floatingButton.gameObject);
}
}
_nodeButtons = new Dictionary <string, Button>();
_lines = new Dictionary <string, LineHolder>();
var files = NodeUtil.GetAvailableNodes();
var nodes = new List <Tuple <string, StoryNode> >();
var nodeNames = new HashSet <string>();
foreach (var file in files)
{
var nName = NodeUtil.StripFileExtension(file);
nodes.Add(new Tuple <string, StoryNode>(nName, NodeUtil.GetNodeData <StoryNode>(file)));
if (!nodeNames.Contains(nName))
{
nodeNames.Add(nName);
}
}
// Gets the dictionary of nodes with the nodes that link to it
foreach (var(key, node) in nodes)
{
foreach (var nodeLink in node.nodes)
{
var link = NodeUtil.StripFileExtension(nodeLink.link);
if (!nodeNames.Contains(link))
{
continue;
}
if (!_nodesWithLinksFrom.ContainsKey(link))
{
_nodesWithLinksFrom.Add(link, new HashSet <string>());
}
if (!_nodesWithLinksFrom[link].Contains(key))
{
_nodesWithLinksFrom[link].Add(key);
}
}
}
// Gets the dictionary of nodes with the nodes that it links to
foreach (var(key, node) in nodes)
{
if (!_nodesWithLinksTo.ContainsKey(key))
{
_nodesWithLinksTo.Add(key, new HashSet <string>());
}
var linksToDelete = new List <string>();
foreach (var nodeLink in node.nodes)
{
var link = NodeUtil.StripFileExtension(nodeLink.link);
if (!_nodesWithLinksFrom.ContainsKey(link))
{
linksToDelete.Add(link);
continue;
}
if (!_nodesWithLinksTo[key].Contains(link))
{
_nodesWithLinksTo[key].Add(link);
}
}
// if there are any non-existing links, then update the node data
if (linksToDelete.Any())
{
var correctedNode = new Node
{
text = node.text,
nodes = node.nodes.Where(n => !linksToDelete.Contains(NodeUtil.StripFileExtension(n.link))).ToArray()
};
NodeUtil.WriteNodeData(key, correctedNode);
}
}
_connectedNodes = new HashSet <string>();
_floatingNodeButtons = new Dictionary <string, Button>();
// if there is no entry node then make one
if (!_nodesWithLinksTo.ContainsKey("entry"))
{
_nodesWithLinksTo.Add("entry", new HashSet <string>());
NodeUtil.WriteNodeData("entry", new Node());
}
// This part creates all of the buttons for the tree starting from 'entry'
AddNode("entry");
// Construct the floating nodes list
BuildFloatingNodesList(nodes);
// This parts sets up the lines between nodes and the indicators for them
BuildGraphButtonLinks();
}