private void ReconcilePassageReferences(TwisonStory story)
{
foreach (var passage in story.passages)
{
foreach (var link in passage.links)
{
var matchingPassage = story.passages.FirstOrDefault(i => i.pid == link.pid);
if (matchingPassage == null)
{
throw new TwisonValidationError($"No passage to match link PID {link.pid}", link);
}
link.passage = matchingPassage;
}
}
// Try to resolve start node, if one is set
if (!string.IsNullOrWhiteSpace(story.startnode))
{
story.startNodePassage = story.passages.FirstOrDefault(i => i.pid == story.startnode);
if (story.startNodePassage == null)
{
throw new TwisonValidationError($"No passage to match startnode PID {story.startnode}", story);
}
}
}
/// <summary>
/// Remove newlines around the edges of passages.
/// </summary>
public void TrimPassages(TwisonStory story)
{
foreach (var passage in story.passages)
{
passage.text = passage.text.Trim();
}
}
private void Default(TwisonStory story, Func <TwisonStory, bool> condition, Action <TwisonStory> applyDefault)
{
if (!condition(story))
{
applyDefault(story);
}
}
/// <summary>
/// Unity can't really render [[foo->bar]] as clickable links.
/// The link data is already saved in the links object.
/// This function removes any links in the text for each passage.
/// </summary>
public void RemoveLinksFromPassages(TwisonStory story)
{
var regex = new Regex("\\[\\[[^\\]]+\\]\\]");
foreach (var passage in story.passages)
{
passage.text = regex.Replace(passage.text, "");
}
}
private void OnStartRuntime(TwisonStory story, bool enterDefaultStartNode)
{
_active = null;
_activeLinks = ResolveActiveLinks();
if (enterDefaultStartNode)
{
GoToPassage(story.startNodePassage, false);
}
}
/// <summary>
/// When pruning links in a story, it is common to end up with a fragment like:
/// Hello\n[[foo->bar]]\n[[foo2->bar2]]\n...
///
/// Which maps as:
/// Hello\n\n\n...
///
/// This function will trim out duplicate line sequences and replace them.
/// Sequences longer than maxNewLineChain are reduced to that length. Sequences
/// shorter are ignored.
/// </summary>
public void CollapseNewLines(TwisonStory story, int maxNewLineChain)
{
var pattern = "";
for (var i = 0; i < maxNewLineChain; i++)
{
pattern += "\n";
}
var regex = new Regex($"{pattern}\n*");
foreach (var passage in story.passages)
{
passage.text = regex.Replace(passage.text, pattern);
}
}
private void ApplyOptions(TwisonStory story, TwisonLoaderOptions options)
{
var utility = new TwisonUtility();
if (options.removeLinkTextFromPassages)
{
utility.RemoveLinksFromPassages(story);
}
if (options.collapseNewLines)
{
utility.CollapseNewLines(story, options.maxNewLineChain);
}
if (options.trimPassages)
{
utility.TrimPassages(story);
}
}
private void ValidateStory(TwisonStory story)
{
Default(story, (s) => s.passages != null, (s) => s.passages = new List <TwisonPassage>());
Default(story, (s) => s.name != null, (s) => s.name = Guid.NewGuid().ToString());
Default(story, (s) => s.creator != null, (s) => s.creator = "");
Default(story, (s) => s.ifid != null, (s) => s.ifid = Guid.NewGuid().ToString());
Default(story, (s) => s.creatorVersion != null, (s) => s.creatorVersion = "");
Default(story, (s) => s.startnode != null, (s) => s.startnode = "");
foreach (var passage in story.passages)
{
Default(passage, (p) => p.name != null, (p) => p.name = Guid.NewGuid().ToString());
Default(passage, (p) => p.text != null, (p) => p.text = "");
Default(passage, (p) => p.tags != null, (p) => p.tags = new List <string>());
Default(passage, (p) => p.links != null, (p) => p.links = new List <TwisonLink>());
Guard(passage, (p) => !string.IsNullOrWhiteSpace(p.pid), (p) => $"Invalid passage, no PID for {p.name}");
foreach (var link in passage.links)
{
Default(link, (l) => l.name != null, (l) => l.name = "");
Default(link, (l) => l.link != null, (l) => l.link = "");
Guard(link, (l) => !string.IsNullOrWhiteSpace(l.pid), (l) => $"Invalid passage in link, no PID for {l.name}");
}
}
}
public TwisonRuntime(TwisonStory story, ITwisonRuntimeBehaviour runtimeBehaviour, bool enterDefaultStartNode)
{
_story = story;
_runtimeBehaviour = runtimeBehaviour;
OnStartRuntime(story, enterDefaultStartNode);
}
