/// <summary>
/// Only to be called in editor to replace the preloaded instance of the behavior tree.
/// </summary>
/// <param name="node"></param>
public void LoadBehavior(NPCNode node)
{
if (!Application.isPlaying)
{
BehaviorTree = node;
}
}
public new static NPCNode CreateInstance(Type nodeType)
{
NPCNode obj = (NPCNode)ScriptableObject.CreateInstance(nodeType);
obj.Children = new List <NPCNode>();
obj.Status = BEHAVIOR_STATUS.PENDING;
return(obj);
}
private void InitBehaviorTree()
{
// Load from asset?
if (BehaviorTree != null)
{
BehaviorTree = LoadTree(BehaviorTree);
}
}
public virtual bool AddChild(NPCNode n)
{
if (Children != null)
{
Children.Add(n);
return(true);
}
return(false);
}
public override bool AddChild(NPCNode node)
{
if (node != null)
{
Children = new List <NPCNode>();
Children.Add(node);
return(true);
}
return(false);
}
public void AddBehavior(NPCNode tree)
{
if (Status == BEHAVIOR_STATUS.INACTIVE)
{
BehaviorTree = tree;
}
else
{
// TODO - check status of behavior here
}
}
protected override IEnumerable <BEHAVIOR_STATUS> Execute()
{
g_Status = BEHAVIOR_STATUS.RUNNING;
// Only a single node will be considered
g_Child = Children[0];
g_Child.Start();
while (!Finished)
{
if (g_Assertion != null)
{
// Only considers the assertion's outcome
g_Assertion.Start();
g_Assertion.UpdateNode();
if (g_Assertion.Status == BEHAVIOR_STATUS.FAILURE)
{
g_Status = g_Assertion.Status;
}
else
{
if (g_Child.Finished)
{
g_Child.Start();
}
g_Child.UpdateNode();
yield return(g_Status);
}
}
else
{
// Keep executing and restaring until failure
g_Child.UpdateNode();
if (g_Child.Finished)
{
if (g_Child.Status == BEHAVIOR_STATUS.FAILURE)
{
g_Status = g_Child.Status;
break;
}
else
{
g_Child.Start();
}
}
yield return(g_Status);
}
}
yield return(g_Status);
}
/// <summary>
/// Loads an asset tree from memory into a runtime copy
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
private NPCNode LoadTree(NPCNode node, NPCBlackboard bb = null)
{
NPCNode parent = Instantiate(node);
parent.Children.Clear();
if (node.Blackboard != null && node.Blackboard.Root == node)
{
bb = node.Blackboard;
}
foreach (NPCNode n in node.Children)
{
NPCNode child = LoadTree(n, bb);
child.Blackboard = bb;
parent.AddChild(child);
}
bb = null;
parent.SetMainAgent(gNPCController);
return(parent);
}
public NPCDecoratorLoop(NPCNode child, NPCAssert assertion) : this(child) {
g_Assertion = assertion;
}
public NPCDecoratorLoop(NPCNode child = null) : base()
{
AddChild(child);
}