/// execute the current DialogPiece <br/> stops at Text and Choice pieces
private void ExecuteDialog()
{
Dictionary <int, bool> jumped = new Dictionary <int, bool>();
again:
if (dialogIndex >= currentDialog.Length)
{
// no more dialog
inDialog = false;
gameObject.SetActive(false);
if (onDialogComplete != null)
{
onDialogComplete();
}
//erase all active sprites
foreach (GameObject image in currentDialogSprites.Values)
{
GameObject.Destroy(image);
}
currentDialogSprites.Clear();
return;
}
DialogPiece p = currentDialog[dialogIndex];
if (p.type == DialogPieceType.Text)
{
TextDialogPiece piece = p as TextDialogPiece;
speaking = true;
currentLine = piece.text;
letterIndex = 0;
letterTimer = 0;
dialogText.text = "";
continueArrow.SetActive(false);
if (piece.charName != "")
{
nameBox.SetActive(true);
nameText.text = piece.charName;
if (currentDialogSprites.TryGetValue(piece.charName.ToLower(), out GameObject image))
{
if (activeSprite)
{
activeSprite.GetComponent <Image>().CrossFadeAlpha(transparentSpriteAlpha, spriteFadeDuration, true);
}
if (!String.IsNullOrEmpty(piece.expression))
{
SetImageSprite(image, GetCharacterSprite(piece.charName, piece.expression, piece.line));
}
image.GetComponent <Image>().CrossFadeAlpha(1, spriteFadeDuration, true);
activeSprite = image;
}
else
{
if (!String.IsNullOrEmpty(piece.expression))
{
throw new DialogException(piece.line, "character '" + piece.charName + "' doesn't have a sprite");
}
}
}
else
{
nameBox.SetActive(false);
}
}
else if (p.type == DialogPieceType.Choice)
{
ChoiceDialogPiece piece = p as ChoiceDialogPiece;
foreach (Transform oldBtn in choiceContainer.transform)
{
GameObject.Destroy(oldBtn.gameObject);
}
float totalHeight = 0;
for (int i = 0; i < piece.choices.Count; i++)
{
ChoiceTextPositionPair pair = piece.choices[i];
Transform newButton = Instantiate(choiceButtonPrefab, choiceContainer).transform;
newButton.localPosition = new Vector3(0, -i * (choiceButtonHeight + choiceButtonMargin), 0);
newButton.GetChild(0).GetComponent <Text>().text = pair.text;
newButton.GetComponent <DialogOptionButton>().onClick.AddListener(delegate
{
continueArrow.transform.localScale = new Vector3(1, 1, 1);
choiceBox.SetActive(false);
inChoice = false;
dialogIndex = pair.position;
ExecuteDialog();
});
totalHeight += choiceButtonHeight + (i < piece.choices.Count - 1 ? choiceButtonMargin : 0);
}
choiceContainer.transform.localPosition = new Vector3(0, totalHeight / 2, 0);
inChoice = true;
continueArrow.transform.localScale = new Vector3(1, -1, 1);
choiceBox.SetActive(true);
}
else if (p.type == DialogPieceType.Jump)
{
JumpDialogPiece piece = p as JumpDialogPiece;
if (jumped.ContainsKey(piece.jumpTo))
{
throw new DialogException(piece.line, "infinite jump loop");
}
jumped.Add(piece.jumpTo, true);
dialogIndex = piece.jumpTo;
goto again;
}
else if (p.type == DialogPieceType.Sprite)
{
SpriteDialogPiece piece = p as SpriteDialogPiece;
if (piece.filename != "" && !dialogSpriteFilenames.ContainsKey(piece.character.ToLower()))
{
dialogSpriteFilenames.Add(piece.character.ToLower(), piece.filename);
}
Sprite sprite = GetCharacterSprite(piece.character, piece.expression, piece.line);
if (activeSprite)
{
activeSprite.GetComponent <Image>().CrossFadeAlpha(transparentSpriteAlpha, spriteFadeDuration, true);
}
GameObject image;
if (!currentDialogSprites.ContainsKey(piece.character))
{
//create the object if it doesn't exist
image = new GameObject(piece.character + " sprite");
Image newImage = image.AddComponent <Image>();
currentDialogSprites.Add(piece.character, image);
RectTransform rect = image.GetComponent <RectTransform>();
rect.SetParent(this.transform);
rect.SetSiblingIndex(0);
newImage.canvasRenderer.SetAlpha(0);
}
else
{
image = currentDialogSprites[piece.character];
}
activeSprite = image;
image.GetComponent <Image>().CrossFadeAlpha(1, spriteFadeDuration, true);
image.transform.localPosition = SpritePositions[piece.position].localPosition;
SetImageSprite(image, sprite);
dialogIndex++;
goto again;
}
}
/// parses a dialog script into an array of DialogPieces
public static DialogPiece[] ParseDialog(string dialogText, char newLine = '\n')
{
string[] lines = dialogText.Split(newLine);
List <DialogPiece> pieces = new List <DialogPiece>();
Dictionary <string, int> labels = new Dictionary <string, int>();
// stores references to labels that haven't been defined yet, and what should happen when they're defined
Dictionary <string, List <LabelReference> > labelReferences = new Dictionary <string, List <LabelReference> >();
void LabelRef(string label, int line, Action <int> action)
{
//if the label is already defined, execute the action immediately
//otherwise, store it in references for later
if (labels.TryGetValue(label, out int position))
{
action(position);
}
else
{
if (!labelReferences.ContainsKey(label))
{
labelReferences.Add(label, new List <LabelReference>());
}
labelReferences[label].Add(new LabelReference(line, action));
}
}
for (int i = 0; i < lines.Length; i++)
{
string l = lines[i].Trim();
//ignore empty lines
if (String.IsNullOrWhiteSpace(l))
{
continue;
}
if (l[0] == '@')
{
//label
string labelName = l.Substring(1);
if (labels.ContainsKey(labelName))
{
throw new DialogParseException(i, "label '" + labelName + "' is defined more than once");
}
int position = pieces.Count;
if (labelReferences.TryGetValue(labelName, out List <LabelReference> references))
{
foreach (LabelReference labelRef in references)
{
labelRef.action(position);
}
labelReferences.Remove(labelName);
}
labels[labelName] = position;
}
else if (l[0] == '?')
{
//choice
string[] options;
if (l == "?")
{
List <string> opList = new List <string>();
while (true)
{
i++;
string op = lines[i].Trim();
if (op == String.Empty)
{
continue;
}
opList.Add(op[op.Length - 1] == ',' ? op.Substring(0, op.Length - 1) : op);
if (op[op.Length - 1] != ',')
{
break;
}
}
options = opList.ToArray();
}
else
{
options = l.Substring(1).Split(',');
}
List <ChoiceTextPositionPair> choices = new List <ChoiceTextPositionPair>();
for (int o = 0; o < options.Length; o++)
{
string option = options[o].Trim();
string text = option.Substring(0, option.IndexOf(':')).Trim();
string label = option.Substring(option.IndexOf(':') + 1).Trim();
if (label == "next")
{
choices.Add(new ChoiceTextPositionPair(text, pieces.Count + 1));
}
else
{
LabelRef(label, i, position => choices.Add(new ChoiceTextPositionPair(text, position)));
}
}
ChoiceDialogPiece thePiece = new ChoiceDialogPiece(i, choices);
pieces.Add(thePiece);
}
else if (l[0] == '>')
{
//jump
string labelName = l.Substring(1).Trim();
JumpDialogPiece thePiece = new JumpDialogPiece(i, 0);
LabelRef(labelName, i, position => thePiece.jumpTo = position);
pieces.Add(thePiece);
}
else if (l[0] == '!')
{
//misc command
string command = l.Substring(1, l.IndexOf(' ') - 1);
string rest = l.Substring(command.Length + 2).Trim();
if (command == "sprite")
{
int colon = rest.IndexOf(':');
int comma = rest.IndexOf(',');
//comma = comma == -1 ? rest.Length : comma;
string character = rest.Substring(0, colon).Trim().ToLower();
string alias = "";
if (character.Contains("-"))
{
int hyphen = character.IndexOf('-');
alias = character.Substring(hyphen + 1);
character = character.Substring(0, hyphen);
}
string position = rest.Substr(colon + 1, comma == -1 ? rest.Length : comma).Trim().ToLower();
string expression = comma == -1 ? "" : rest.Substring(comma + 1).Trim().ToLower();
pieces.Add(new SpriteDialogPiece(i, character, position, expression, alias));
}
}
else
{
//normal dialog
if (!l.Contains(":"))
{
throw new DialogParseException(i, "invalid line syntax");
}
int colon = l.IndexOf(':');
string charName = l.Substring(0, colon);
string expression = "";
int paren = charName.IndexOf('(');
if (paren != -1)
{
expression = charName.Substr(paren + 1, charName.IndexOf(')'));
charName = charName.Substring(0, paren).Trim();
}
string messageText = l.Substring(colon + 1).Trim();
pieces.Add(new TextDialogPiece(i, charName, messageText, expression));
}
}
//if there are any references still left, it means their labels don't exist
foreach (var kvp in labelReferences)
{
throw new DialogParseException(kvp.Value[0].line, "undefined label '" + kvp.Key + "'");
}
return(pieces.ToArray());
}
