public static void SelectChoice_PrologKBChanges(object sender, SelectChoiceEventArgs eventArgs)
{
Unit selectedChoice = eventArgs.SelectedChoice;
var prologKBQuery = from unit in eventArgs.Blackboard.LookupUnits <Unit>()
where unit.HasComponent <KC_PrologKB>()
select unit;
// Currently only support one global KB.
Debug.Assert(prologKBQuery.Count() == 1);
KC_PrologKB prologKB = prologKBQuery.First().GetComponent <KC_PrologKB>();
// If there are any facts to retract, retract them
if (selectedChoice.HasComponent <KC_PrologFactDeleteList>())
{
selectedChoice.GetComponent <KC_PrologFactDeleteList>().DeleteFacts(prologKB);
}
// If there are any facts to add, add them
if (selectedChoice.HasComponent <KC_PrologFactAddList>())
{
selectedChoice.GetComponent <KC_PrologFactAddList>().AddFacts(prologKB);
}
}
/*
* Given an array of choices and a 0-indexed choice selection, adds the appropriate query to the blackboard.
*/
public void SelectChoice(ContentUnit[] choices, uint choiceMade)
{
if (choiceMade < choices.Length)
{
// Add a U_IDQuery to blackboard for the target content unit associated with the choice.
ContentUnit selectedChoice = choices[choiceMade];
m_blackboard.AddUnit(new U_IDSelectRequest((string)selectedChoice.Metadata[TargetContentUnitID]));
SelectChoiceEventArgs eventArgs = new SelectChoiceEventArgs(selectedChoice, m_blackboard);
OnSelectChoice(eventArgs);
}
else
{
throw new ArgumentOutOfRangeException(nameof(choiceMade), choiceMade, $"choiceMade must be between 0 and the number of choices - 1 {choices.Length - 1}");
}
}
/*
* Given an array of choices and a 0-indexed choice selection, activates the KC_IDSelectionRequest on the selected choice and
* call any actions registered on PresenterSelectChoice.
*/
public void SelectChoice(Unit[] choices, uint choiceMade)
{
if (choiceMade < choices.Length)
{
// Activate the KC_IDSelectionRequest associated with the choice.
Unit selectedChoice = choices[choiceMade];
selectedChoice.SetActiveRequest(true);
// Do any actions that have been registered on PresenterSelectChoice.
SelectChoiceEventArgs eventArgs = new SelectChoiceEventArgs(selectedChoice, m_blackboard);
OnSelectChoice(eventArgs);
}
else
{
throw new ArgumentOutOfRangeException(nameof(choiceMade), choiceMade, $"choiceMade must be between 0 and the number of choices - 1 {choices.Length - 1}");
}
}
protected virtual void OnSelectChoice(SelectChoiceEventArgs eventArgs)
{
PresenterSelectChoice?.Invoke(this, eventArgs);
}
