private void Guard(TwisonPassage passage, Func <TwisonPassage, bool> condition, Func <TwisonPassage, string> error)
{
if (!condition(passage))
{
throw new TwisonValidationError(error(passage), passage);
}
}
private void Default(TwisonPassage passage, Func <TwisonPassage, bool> condition, Action <TwisonPassage> applyDefault)
{
if (!condition(passage))
{
applyDefault(passage);
}
}
private void OnStartRuntime(TwisonStory story, bool enterDefaultStartNode)
{
_active = null;
_activeLinks = ResolveActiveLinks();
if (enterDefaultStartNode)
{
GoToPassage(story.startNodePassage, false);
}
}
public void GoToPassage(TwisonPassage passage, bool recordHistory = true)
{
if (passage == null)
{
return;
}
if (_active != null)
{
_runtimeBehaviour.OnExitState(_active);
if (recordHistory)
{
PushHistoryEntry(_active);
}
}
_runtimeBehaviour.OnEnterState(_active);
_active = passage;
_activeLinks = ResolveActiveLinks();
}
private void PushHistoryEntry(TwisonPassage active)
{
_history.Push(active);
}
