public static Page TryLoad(
StreamReader reader,
Dictionary <string, Unit> unitsByUniqueId,
Dictionary <string, ReactionArrow> reactionArrowsByUniqueId)
{
var result = new Page();
result.ActionText = null;
result.Reactions = new Dictionary <string, ScoredReactionArrow>();
// End of file right at the beginning (maybe after an 'x' operation) indicates a valid end of the file.
var line = reader.ReadLine();
if (line == null)
{
return(null);
}
while (true)
{
var parts = line.Split(SaveFileDelimiter);
switch (parts[0])
{
case "s":
Setting setting;
switch (parts[2])
{
case "s":
setting = new StringSetting(parts[3]);
break;
case "c":
if (!int.TryParse(parts[3], out var chosen))
{
throw new InvalidOperationException(string.Format($"Can't parse int chosen '{parts[3]}'."));
}
if (!int.TryParse(parts[4], out var opportunity))
{
throw new InvalidOperationException(string.Format($"Can't parse int opportunity '{parts[4]}'."));
}
setting = new ScoreSetting(chosen, opportunity);
break;
case "b":
switch (parts[3])
{
case "0":
setting = new BooleanSetting(false);
break;
case "1":
setting = new BooleanSetting(true);
break;
default:
throw new InvalidOperationException(string.Format($"Unexpected boolean value '{parts[3]}'."));
}
break;
default:
throw new InvalidOperationException(string.Format($"Unexpected setting type '{parts[2]}'."));
}
result.Settings.Add(parts[1], setting);
break;
case "n":
result.NextTargetUnitOnReturn.Push(unitsByUniqueId[parts[1]]);
break;
case "a":
result.ActionText = parts[1];
break;
case "r":
if (!double.TryParse(parts[2], out var score))
{
throw new InvalidOperationException(string.Format($"Can't parse double score '{parts[2]}'."));
}
result.Reactions.Add(parts[3], new ScoredReactionArrow(score, reactionArrowsByUniqueId[parts[1]]));
break;
case "x":
// Flip the stack so it's going the right way. When you copy a stack, it flips it.
result.NextTargetUnitOnReturn = new Stack <Unit>(result.NextTargetUnitOnReturn);
return(result);
default:
throw new InvalidOperationException(string.Format($"Unexpected operation '{parts[0]}'."));
}
line = reader.ReadLine();
if (line == null)
{
throw new InvalidOperationException(string.Format($"Unexpected end of save file."));
}
}
}
public TokenList(
string sourceText,
string sourceNameForErrorMessages,
Dictionary <string, Setting> settings)
{
// Tokens only get created as part of this list of tokens.
char pushedLetter = '\0';
char gottenLetter;
int letterIndex;
var specialIds = new List <string> {
"John", "Jane", "Smith", "he", "He", "him", "Him", "his", "His", "himself", "Himself", "man", "Man", "boy", "Boy", "Mr", "Mrs", "she", "She", "her", "Her", "hers", "Hers", "herself", "Herself", "woman", "Woman", "girl", "Girl", "Ms"
};
TheList = new List <Token>();
string textAccumulator = "";
int lineNumber = 1;
letterIndex = 0;
// This outer loop is for accumulating text strings
while (true)
{
if (!GetLetter())
{
if (textAccumulator.Length != 0)
{
TheList.Add(new Token(TokenType.Characters, textAccumulator, lineNumber));
}
TheList.Add(new Token(TokenType.EndOfSourceText, "", lineNumber));
return;
}
switch (gottenLetter)
{
case '\n':
// @ lets you explicitly put in a paragraph break. We'll clean up any extra spaces later. This lets you break contiguous text up into multiple lines within 'if' groups without having it affect formatting.
textAccumulator += "\n";
++lineNumber;
break;
case '\r':
// Ignore the CR in CRLF.
break;
case '\t':
textAccumulator += "\t";
break;
// Didn't want to put this way at the bottom--gets lost.
default:
textAccumulator += gottenLetter;
break;
case '[':
if (!GetLetter())
{
TheList.Add(new Token(TokenType.EndOfSourceText, "", lineNumber));
return;
}
// Check for a [[ comment starter.
if (gottenLetter != '[')
{
// No comment--pretend this never happened.
UngetLetter();
}
else
{
// [[ This is an example comment. ]]
if (!GetComment())
{
// If it returns false, it means you've reached the end.
TheList.Add(new Token(TokenType.EndOfSourceText, "", lineNumber));
return;
}
// We got a text mode comment, so we break back out to the outer loop.
break; // switch
}
// If we have accumulated a text string, record it as the next token before going into code mode.
if (textAccumulator.Length != 0)
{
TheList.Add(new Token(TokenType.Characters, textAccumulator, lineNumber));
textAccumulator = "";
}
// This inner loop is for breaking out control codes
for (bool gotClosingBracket = false; !gotClosingBracket;)
{
if (!GetLetter())
{
TheList.Add(new Token(TokenType.EndOfSourceText, "", lineNumber));
return;
}
switch (gottenLetter)
{
case ' ':
case '\r':
break;
case '\n':
++lineNumber;
break;
case ']':
// Leave code mode
gotClosingBracket = true;
break;
case '=':
TheList.Add(new Token(TokenType.Equal, "=", lineNumber));
break;
case '.':
TheList.Add(new Token(TokenType.Period, ".", lineNumber));
break;
case ',':
TheList.Add(new Token(TokenType.Comma, ",", lineNumber));
break;
case '[':
// Must be a comment.
if (!GetLetter())
{
TheList.Add(new Token(TokenType.EndOfSourceText, "", lineNumber));
return;
}
if (gottenLetter != '[')
{
throw new InvalidOperationException(string.Format($"file {sourceNameForErrorMessages} line {lineNumber}: expected '[[' but got '[{gottenLetter}' in\n{sourceText}"));
}
if (!GetComment())
{
// If it returns false, it means you've reached the end.
TheList.Add(new Token(TokenType.EndOfSourceText, "", lineNumber));
return;
}
// Done skipping comment. Move on to the next token.
break;
default:
if (!char.IsLetterOrDigit(gottenLetter) || gottenLetter == '_')
{
throw new InvalidOperationException(string.Format($"file {sourceNameForErrorMessages} line {lineNumber}: unexpected character '{gottenLetter}' in\n{sourceText}"));
}
string id = "";
do
{
id += gottenLetter;
if (!GetLetter())
{
break;
}
} while (Char.IsLetterOrDigit(gottenLetter) || gottenLetter == '_' || gottenLetter == '.');
UngetLetter();
if (id == "if")
{
TheList.Add(new Token(TokenType.If, id, lineNumber));
}
else if (id == "else")
{
TheList.Add(new Token(TokenType.Else, id, lineNumber));
}
else if (id == "or")
{
TheList.Add(new Token(TokenType.Or, id, lineNumber));
}
else if (id == "not")
{
TheList.Add(new Token(TokenType.Not, id, lineNumber));
}
else if (id == "end")
{
TheList.Add(new Token(TokenType.End, id, lineNumber));
}
else if (id == "when")
{
TheList.Add(new Token(TokenType.When, id, lineNumber));
}
else if (id == "set")
{
TheList.Add(new Token(TokenType.Set, id, lineNumber));
}
else if (id == "score")
{
TheList.Add(new Token(TokenType.Score, id, lineNumber));
}
else if (id == "sort")
{
TheList.Add(new Token(TokenType.Sort, id, lineNumber));
}
else if (id == "text")
{
TheList.Add(new Token(TokenType.Text, id, lineNumber));
}
else if (id == "merge")
{
TheList.Add(new Token(TokenType.Merge, id, lineNumber));
}
else if (id == "return")
{
TheList.Add(new Token(TokenType.Return, id, lineNumber));
}
else if (id == "scene")
{
TheList.Add(new Token(TokenType.Scene, id, lineNumber));
}
else if (specialIds.Contains(id))
{
TheList.Add(new Token(TokenType.SpecialId, id, lineNumber));
}
else
{
var type = settings.ContainsKey(id) ?
settings[id] switch
{
ScoreSetting _ => TokenType.ScoreId,
StringSetting _ => TokenType.StringId,
BooleanSetting _ => TokenType.BooleanId,
_ => throw new NotImplementedException(), // Just making the compiler happy. There is no other case.
}
:
TokenType.Id;
TheList.Add(new Token(type, id, lineNumber));
}
break;
}
}
break;
}
public void Build(
Unit firstUnit,
string startingTrace)
{
// Starting with the current unit box, a) merge the texts of all units connected below it into one text, and b) collect all the reaction arrows.
var accumulatedReactions = new Dictionary <string, ScoredReactionArrow>();
// The action text will contain all the merged action texts.
var accumulatedActionTexts = startingTrace;
// If there were no reaction arrows, we've reached an end point and need to return to
var gotAReactionArrow = false;
// Reactions are sorted by score, which is a floating point number. But some reactions may have the same score. So add a small floating-point sequence number to each one, to disambiguate them.
double reactionScoreDisambiguator = 0;
// Scores use this to compute whether you are above average in a score. Set it now, before creating the page, so it can be used in conditions evaluated throughout page creation.
ScoreSetting.Average = Settings.Values.Where(setting => setting is ScoreSetting).Select(setting => (setting as ScoreSetting).ScoreValue).DefaultIfEmpty().Average();
if (Game.DebugMode)
{
accumulatedActionTexts += String.Format($"@{Game.PositiveDebugTextStart}average = {ScoreSetting.Average:0.00}%{Game.DebugTextStop}");
}
// This recursive routine will accumulate all the action and reaction text values in the above variables.
Accumulate(firstUnit);
while (!gotAReactionArrow)
{
// We got to a dead end without finding any reaction options for the player. So pop back to a pushed location and continue merging from there.
if (!NextTargetUnitOnReturn.Any())
{
throw new InvalidOperationException(string.Format($"Got to a dead end with no place to return to."));
}
var unit = NextTargetUnitOnReturn.Pop();
if (Game.DebugMode)
{
accumulatedActionTexts += "@" + Game.PositiveDebugTextStart + "pop " + unit.UniqueId + Game.DebugTextStop;
}
Accumulate(unit);
}
ActionText = FixPlus(accumulatedActionTexts);
Reactions = accumulatedReactions;
void Accumulate(
Unit unit)
{
// First append this action box's own text and execute any settings.
if (accumulatedActionTexts.Length == 0)
{
accumulatedActionTexts = EvaluateText(unit.ActionCode);
}
else
{
accumulatedActionTexts += " " + EvaluateText(unit.ActionCode);
}
EvaluateSettingsAndScores(unit.ActionCode, out string trace1);
accumulatedActionTexts += trace1;
// Next examine all the arrows for the action.
var allWhensFailed = true;
var whenElseArrows = new List <Arrow>();
var returnArrows = new List <ReturnArrow>();
foreach (var arrow in unit.GetArrows())
{
if (arrow is ReturnArrow returnArrow)
{
// We'll deal with these return arrows at the end of the loop.
returnArrows.Add(returnArrow);
}
else if (EvaluateWhenElse(arrow.Code))
{
// Save 'when else' arrows for possible later execution.
whenElseArrows.Add(arrow);
}
else
{
// If conditions in the arrow are false, then just ignore the arrow completely. This includes all types of arrows.
(var succeeded, var hadWhen) = EvaluateWhen(arrow.Code, out string trace2);
accumulatedActionTexts += trace2;
if (!succeeded)
{
continue;
}
if (hadWhen)
{
allWhensFailed = false;
}
AccumulateArrow(arrow);
}
}
if (allWhensFailed)
{
// If none of the 'when EXPRESSIONS' arrows succeeded, execute the 'when else' arrows now.
foreach (var arrow in whenElseArrows)
{
AccumulateArrow(arrow);
}
}
if (returnArrows.Any())
{
// Create a unit on the fly and push it on the stack for execution on return. This converts the return arrows to merge arrows.
var returnUnit = Unit.BuildReturnUnitFor(returnArrows);
NextTargetUnitOnReturn.Push(returnUnit);
}
}
void AccumulateArrow(
Arrow arrow)
{
switch (arrow)
{
case MergeArrow mergeArrow:
// There may be 'set' parameters for a referential merge.
EvaluateSettingsAndScores(arrow.Code, out string trace);
accumulatedActionTexts += trace;
if (Game.DebugMode)
{
accumulatedActionTexts += "@" + Game.PositiveDebugTextStart + "merge" + (mergeArrow.DebugSceneId != null ? " " + mergeArrow.DebugSceneId : "") + Game.DebugTextStop;
}
// There are two kinds of merge arrows.
Unit targetUnit;
if (mergeArrow.TargetSceneUnit != null)
{
targetUnit = mergeArrow.TargetSceneUnit;
// When we finish the jump to the other scene, we will continue merging with the action this arrow points to.
NextTargetUnitOnReturn.Push(mergeArrow.TargetUnit);
}
else
{
// It's a local merge arrow. Merge the action it points to.
// It should be impossible for it to have no target. Let it crash if that's the case.
targetUnit = mergeArrow.TargetUnit;
}
// Call this routine again recursively. It will append the target's text and examine the target's arrows.
Accumulate(targetUnit);
break;
case ReactionArrow reactionArrow:
gotAReactionArrow = true;
double highestScore = 0;
var reactionText = EvaluateText(reactionArrow.Code);
// There's a little trickiness with links here...
if (reactionText.Length > 0 && reactionText[0] == '{')
{
// If it's in braces, it refers to a hyperlink already in the text. Don't make a new hyperlink for it. Just take off the braces. When the user clicks on the link, it won't have braces.
reactionText = reactionText.Substring(1);
var end = reactionText.IndexOf("}");
if (end != -1)
{
reactionText = reactionText.Substring(0, end);
}
// -1 tells the UI to not put embedded hyperlinks on the list on the screen.
highestScore = -1;
}
else
{
// Sort by scores.
var highestScoreIdPlusSpace = "";
reactionArrow.Code.Traverse((code, originalSourceText) =>
{
if (!(code is ScoreCode scoreCode))
{
return(true);
}
foreach (var id in scoreCode.Ids)
{
ScoreSetting scoreSetting;
if (Settings.TryGetValue(id, out Setting setting))
{
scoreSetting = setting as ScoreSetting;
}
else
{
scoreSetting = new ScoreSetting();
Settings.Add(id, scoreSetting);
}
var value = scoreSetting.ScoreValue;
if (value > highestScore)
{
highestScore = value;
highestScoreIdPlusSpace = id + " ";
}
}
return(true);
});
if (Game.DebugMode)
{
reactionText =
Game.PositiveDebugTextStart +
highestScoreIdPlusSpace +
((int)(highestScore * 100)).ToString() +
"% " +
Game.DebugTextStop +
reactionText;
}
}
accumulatedReactions[reactionText] = new ScoredReactionArrow(highestScore, reactionArrow);
reactionScoreDisambiguator += 0.00001;
break;
}
}
}
public static Page?TryLoad(
TextReader reader,
World world)
{
// Loads saved story state data and links it to the static world description. Either loads and returns a valid Page or returns null if it reaches the end of the reader. Run this multiple times to read multiple Pages from the reader.
var settings = new Dictionary <string, Setting>(world.Settings);
string actionText = "";
var reactions = new Dictionary <string, ScoredReactionArrow>();
var nextTargetNodeOnReturn = new Stack <Node>();
// End of file right at the beginning (maybe after an 'x' operation) indicates a valid end of the file. That means we're done reading all the pages in the file.
var line = reader.ReadLine();
if (line == null)
{
return(null);
}
while (true)
{
var parts = line.Split(SaveFileDelimiter);
switch (parts[0])
{
case "s":
Setting setting;
switch (parts[2])
{
case "s":
setting = new StringSetting(parts[3]);
break;
case "c":
if (!int.TryParse(parts[3], out var chosen))
{
throw new InvalidOperationException(string.Format($"Can't parse int chosen '{parts[3]}'."));
}
if (!int.TryParse(parts[4], out var opportunity))
{
throw new InvalidOperationException(string.Format($"Can't parse int opportunity '{parts[4]}'."));
}
setting = new ScoreSetting(chosen, opportunity);
break;
case "b":
switch (parts[3])
{
case "0":
setting = new BooleanSetting(false);
break;
case "1":
setting = new BooleanSetting(true);
break;
default:
throw new InvalidOperationException(string.Format($"Unexpected boolean value '{parts[3]}'."));
}
break;
default:
throw new InvalidOperationException(string.Format($"Unexpected setting type '{parts[2]}'."));
}
settings[parts[1]] = setting;
break;
case "n":
nextTargetNodeOnReturn.Push(world.NodesByUniqueId[parts[1]]);
break;
case "a":
actionText = parts[1];
break;
case "r":
if (!double.TryParse(parts[2], out var score))
{
throw new InvalidOperationException(string.Format($"Can't parse double score '{parts[2]}'."));
}
reactions.Add(parts[3], new ScoredReactionArrow(score, world.ReactionArrowsByUniqueId[parts[1]]));
break;
case "x":
// Flip the stack so it's going the right way. When you copy a stack, it flips it.
nextTargetNodeOnReturn = new Stack <Node>(nextTargetNodeOnReturn);
return(new Page(actionText, reactions, settings, nextTargetNodeOnReturn));
default:
throw new InvalidOperationException(string.Format($"Unexpected operation '{parts[0]}'."));
}
line = reader.ReadLine();
if (line == null)
{
throw new InvalidOperationException(string.Format($"Unexpected end of save file."));
}
}
}