public static Node BuildReturnNodeFor(
List <ReturnArrow> returnArrows)
{
if (returnArrows == null)
{
throw new ArgumentNullException(nameof(returnArrows));
}
var result = new Node("returnNode", "returnNode", new CodeTree("", "returnNode", new Dictionary <string, Setting>()));
foreach (var returnArrow in returnArrows)
{
var mergeArrow = new MergeArrow(returnArrow.TargetNode, returnArrow.Code, "returnArrow", "returnArrow");
result.Arrows.Add(mergeArrow);
}
return(result);
}
public World(
string sourceDirectory)
{
// Load all the graphml files in the source directory.
var sourcePaths = Directory.GetFiles(sourceDirectory, "*.graphml");
if (sourcePaths.Length < 1)
{
throw new InvalidOperationException(string.Format($"no .graphml files in directory {sourceDirectory}"));
}
Node?hopefullyFirstNode = null;
Settings = LoadSettings(sourceDirectory);
NodesByUniqueId = new Dictionary <string, Node>();
ReactionArrowsByUniqueId = new Dictionary <string, ReactionArrow>();
// Create a temporary list of actions from the nodes in the graphml that have scene IDs, so we can link merges to them in this routine later.
var nodesBySceneId = new Dictionary <string, Node>();
// Create a temporary list of merges that need to be linked to actions by scene ID.
var mergeFixups = new List <MergeArrow>();
var settingsReportWriter = new StreamWriter("settings.csv", false);
settingsReportWriter.WriteLine("SETTING,OPERATION,VALUE,FILE");
foreach (var sourcePath in sourcePaths)
{
var sourceName = Path.GetFileName(sourcePath);
// Create a temporary list of actions from the nodes in the graphml, so we can link arrows to them in this routine later.
var nodesByNodeId = new Dictionary <string, Node>();
var graphml = new Graphml(File.ReadAllText(sourcePath));
foreach (var(nodeId, label) in graphml.Nodes())
{
Node node = new Node(sourceName, nodeId, new CodeTree(label, sourceName, Settings));
NodesByUniqueId[sourceName + ":" + nodeId] = node;
EvaluateSettingsReport(node.ActionCode, sourceName, settingsReportWriter);
nodesByNodeId.Add(nodeId, node);
// Check if there's a [scene ID] declaration.
var declaredSceneId = EvaluateScene(node.ActionCode);
if (declaredSceneId != null)
{
if (nodesBySceneId.ContainsKey(declaredSceneId))
{
throw new InvalidOperationException(string.Format($"{sourceName}: Scene '{declaredSceneId}' declared twice"));
}
nodesBySceneId.Add(declaredSceneId, node);
if (declaredSceneId == "start")
{
if (hopefullyFirstNode != null)
{
throw new InvalidOperationException(string.Format($"{sourceName}: More than one start scene"));
}
hopefullyFirstNode = node;
}
}
}
// Create and attach merges and reactions to the actions we just created.
foreach (var(edgeId, sourceNodeId, targetNodeId, label) in graphml.Edges())
{
// Point the arrow to its target action.
if (!nodesByNodeId.TryGetValue(targetNodeId, out var targetNode))
{
throw new InvalidOperationException(string.Format($"{sourceName}: Internal error: no node declaration for referenced target node '{targetNodeId}'"));
}
var code = new CodeTree(label, sourceName, Settings);
EvaluateSettingsReport(code, sourceName, settingsReportWriter);
var(isMerge, referencedSceneId, isReturn) = EvaluateArrowType(code);
Arrow arrow;
if (isMerge)
{
var mergeArrow = new MergeArrow(targetNode, code, referencedSceneId, sourceName);
if (referencedSceneId != null)
{
mergeFixups.Add(mergeArrow);
}
arrow = mergeArrow;
}
else if (isReturn)
{
arrow = new ReturnArrow(targetNode, code);
}
else
{
var reactionArrow = new ReactionArrow(targetNode, code, sourceName, edgeId);
ReactionArrowsByUniqueId[reactionArrow.UniqueId] = reactionArrow;
arrow = reactionArrow;
}
// Add the arrow to the source action's arrows.
if (!nodesByNodeId.TryGetValue(sourceNodeId, out var sourceNode))
{
throw new InvalidOperationException(string.Format($"{sourceName}: Internal error: no node declaration for referenced source node '{sourceNodeId}'"));
}
sourceNode.Arrows.Add(arrow);
}
}
// Make a second pass to point merges that reference scenes to the scene's first action.
foreach (var mergeArrow in mergeFixups)
{
if (mergeArrow.DebugSceneId == null)
#pragma warning disable CA1303 // Do not pass literals as localized parameters
{
throw new InvalidOperationException("Internal error: unexpected null scene ID");
}
#pragma warning restore CA1303 // Do not pass literals as localized parameters
if (!nodesBySceneId.TryGetValue(mergeArrow.DebugSceneId, out var targetSceneNode))
{
throw new InvalidOperationException(string.Format($"No scene declaration for referenced scene ID '{mergeArrow.DebugSceneId}'"));
}
mergeArrow.TargetSceneNode = targetSceneNode;
}
settingsReportWriter.Close();
if (hopefullyFirstNode == null)
#pragma warning disable CA1303 // Do not pass literals as localized parameters
{
throw new InvalidOperationException("No start scene found.");
}
#pragma warning restore CA1303 // Do not pass literals as localized parameters
FirstNode = hopefullyFirstNode;
// Some helper functions.
Dictionary <string, Setting> LoadSettings(
string sourceDirectory)
{
var result = new Dictionary <string, Setting>();
// This is just a quick, cheesy way to load this.
foreach (var words in
File.ReadLines(Path.Combine(sourceDirectory, "settings.txt"))
.Select(line => line.Split(' ')))
{
switch (words[0])
{
case "score":
// ex. 'score brave'
result.Add(words[1], new ScoreSetting());
break;
case "flag":
// ex. 'flag tvOn'
result.Add(words[1], new BooleanSetting(false));
break;
case "string":
result.Add(words[1], new StringSetting(""));
break;
// Ignore anything else as comments.
}
}
return(result);
}
string?EvaluateScene(
CodeTree codeTree)
{
return(codeTree.Traverse()
.OfType <SceneCode>()
.Select(sceneCode => sceneCode.SceneId)
.Cast <string?>()
.DefaultIfEmpty(null)
.First());
}
(bool, string?, bool) EvaluateArrowType(
CodeTree codeTree)
{
bool isMerge = false;
bool isReturn = false;
string?referencedSceneId = null;
foreach (var code in codeTree.Traverse())
{
switch (code)
{
case MergeCode mergeCode:
if (isReturn)
{
throw new InvalidOperationException(string.Format($"Can't return and merge in the same arrow in\n{codeTree.SourceText}."));
}
isMerge = true;
referencedSceneId = mergeCode.SceneId;
break;
case ReturnCode returnCode:
if (isMerge)
{
throw new InvalidOperationException(string.Format($"Can't merge and return in the same arrow in\n{codeTree.SourceText}."));
}
isReturn = true;
break;
}
}
return(isMerge, referencedSceneId, isReturn);
}
void EvaluateSettingsReport(
CodeTree codeTree,
string sourceName,
StreamWriter writer)
{
var sourceNameWithoutExtension = Path.GetFileNameWithoutExtension(sourceName);
foreach (var code in codeTree.Traverse())
{
switch (code)
{
case SetCode setCode:
Write("set", setCode.Expressions);
break;
case WhenCode whenCode:
Write("when", whenCode.Expressions);
break;
case IfCode ifCode:
Write("if", ifCode.Expressions);
break;
//case ScoreCode scoreCode:
// Write("score", scoreCode.Ids.Select(id => new Expression(false, id, null)));
// break;
}
}
void Write(
string operation,
IEnumerable <Expression> expressions)
{
foreach (var expression in expressions)
{
var line = "";
line += expression.LeftId;
line += ",";
line += operation;
if (expression.Not)
{
line += " not";
}
line += ",";
if (expression.RightId != null)
{
line += expression.RightId;
}
line += ",";
line += sourceNameWithoutExtension;
writer.WriteLine(line);
}
}
}
}