/// <summary>
/// Pushes a list of nodes as a new stack frame onto the call stack.
/// </summary>
/// <param name="label">
/// The list of nodes to push onto the call stack.
/// </param>
public void Inject(List <Node> nodes)
{
if (nodes == null)
{
throw new ArgumentNullException(nameof(nodes));
}
Stack.Push(new StackFrame(nodes));
Yield = null;
Continue();
}
public Rumor(SerializationInfo info, StreamingContext context)
{
Nodes = info.GetValue <Dictionary <string, List <Node> > >("nodes");
State = info.GetValue <RumorState>("state");
Scope = info.GetValue <RumorScope>("scope");
Stack = info.GetValue <Stack <StackFrame> >("stack");
FinishCount = info.GetValue <int>("finishCount");
CancelCount = info.GetValue <int>("cancelCount");
Yield = info.GetValue <Yield>("yield");
AutoAdvance = info.GetValue <float>("autoAdvance");
Bindings = new RumorBindings();
}
/// <summary>
/// This should be called after any operation that may allow execution
/// to continue.
/// </summary>
private void Continue()
{
// There is nothing to do
if (Stack.Count == 0)
{
return;
}
while (Stack.Count > 0)
{
// Check if the current yield is finished
if (Yield != null)
{
if (Yield.Finished == true)
{
Yield = null;
}
// Auto-advance, if applicable
else if (Yield is ForAdvance &&
AutoAdvance >= 0 && Yield.Elapsed >= AutoAdvance)
{
Yield = null;
}
// Wait for the current yield to finish
else
{
return;
}
}
// Check if this frame is complete
var frame = Stack.Peek();
if (frame.Done)
{
Stack.Pop();
continue;
}
// Execute the next node in the stack frame
Yield = frame.Execute(this);
if (Yield is ForAdvance && AutoAdvance != 0)
{
OnWaitForAdvance?.Invoke();
return;
}
else if (Yield is ForChoose)
{
OnWaitForChoose?.Invoke(State.GetChoices());
OnWaitForChooseTimeout?.Invoke(
State.GetChoices(),
(Yield as ForChoose).Timeout
);
return;
}
else if (Yield is ForSeconds)
{
return;
}
}
OnFinish?.Invoke();
FinishCount++;
}