/// <summary>
/// Sets the position of a <see cref="NodeObject"/> in the world, and all its children, recursively <para/>
/// This method is an <see cref="IEnumerator"/> so the tree is given time to be created, instead of the program freezing whilst it creates the tree in one frame
/// </summary>
/// <param name="node">The starting node to set the position of</param>
IEnumerator SetNodePosition(NodeObject node)
{
node.SetPosition(visualisationType);
nodesGenerated++;
foreach (Node child in node.Children)
{
yield return(new WaitForSeconds(.1f));
StartCoroutine(SetNodePosition((NodeObject)child));
}
}
/// <summary>
/// If the user has started running MCTS, then display information about it to the UI whilst it generates <para/>
/// When the MCTS has finished generating, set the position of each <see cref="NodeObject"/> so that they can be rendered on-screen <para/>
/// When each nodes position has been set, switch to the tree navigation UI
/// </summary>
void Update()
{
//Don't do anything until the user has started running the MCTS
if (mcts == null)
{
return;
}
//While the MCTS is still running, display progress information about the time remaining and the amounts of nodes created to the user
if (!mcts.Finished)
{
timeLeft -= Time.deltaTime;
if (timeLeft <= 0)
{
mcts.Finish();
}
TreeUIController.UpdateProgressBar((1 - (timeLeft / timeToRunFor)) / 2, "Running MCTS " + mcts.UniqueNodes + " nodes " + timeLeft.ToString("0.0") + "s/" + timeToRunFor.ToString("0.0") + "s");
}
//Return if the MCTS has not finished being created
if (!mcts.Finished)
{
return;
}
//If the MCTS has finished being computed, start to create gameobjects for each node in the tree
if (!startedVisualisation)
{
rootNodeObject = (NodeObject)mcts.Root;
rootNodeObject.SetPosition(visualisationType);
StartCoroutine(SetNodePosition(rootNodeObject));
startedVisualisation = true;
}
//Display information on the progress bar about how many node objects have been created, until every node in the tree has its own gameobject
if (!allNodesGenerated)
{
if (nodesGenerated < mcts.UniqueNodes)
{
TreeUIController.UpdateProgressBar(0.5f + ((float)nodesGenerated / mcts.UniqueNodes / 2), "Creating node objects: " + nodesGenerated + "/" + mcts.UniqueNodes);
}
else if (nodesGenerated == mcts.UniqueNodes)
{
//If every node has had a gameobject created for it, then switch to the navigation UI and start to render the game tree
TreeUIController.SwitchToNavigationUI();
Camera.main.GetComponent <LineDraw>().linesVisible = true;
Camera.main.GetComponent <TreeCameraControl>().CurrentNode = rootNodeObject;
TreeUIController.DisplayNodeInfo(mcts.Root);
allNodesGenerated = true;
LineDraw.SelectNode(rootNodeObject);
}
}
}