public IAction <TActor>?NextAction()
{
if (StoredAction != null)
{
// Return StoredAction and simultaneously set it to null
var temp = StoredAction;
StoredAction = null;
return(temp);
}
if (Routine != null)
{
IAction <TActor>?action = Routine.NextAction();
if (action != null)
{
return(action);
}
else
{
Routine = null;
}
}
IActivity <TActor>?activity = NextActivity();
if (activity == null)
{
return(null);
}
if (activity is IAction <TActor> atomicAction)
{
return(atomicAction);
}
else
{
Routine = activity.AsRoutine();
return(NextAction());
}
}