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The friendly tool for writing game dialogue, in and for Godot

Getting Started | Documentation | Tutorial | Follow me 🐦!


Wol is a tool for creating interactive dialogue for games. Its based on YarnSpinner and it's Yarn language.

Write your conversations in Yarn, a simple programming language that's designed to be easy for writers to learn, while also powerful enough to handle whatever you need.

Yarn's similar in style to Twine, so if you already know that, you'll be right at home! If you don't, that's cool - Yarn's syntax is extremely minimal, and there's not much there to learn.

Wol is actively maintained by Bram Dingelstad, if you need a programmer or designer for your next (Godot) project, you can hire him!

Getting Started

This repo contains the source code for the Wol compiler. If you want to use it in a game engine other than Godot, you should get the appropriate package for your game engine. Check out YarnSpinner-Unity for a Unity version of this project.

Download from AssetLib

Unfortunately, this option isn't available yet. Stay tuned!

Clone this repository / download the zip

  1. Extract the repository in a folder of your choice.
  2. Import the project in Godot.
  3. Run the scene to get a taste of Wol!
  4. Move the addons folder to your Godot project.
  5. Enable the plugin in your Project Settings.
  6. Setup the Wol node using the documentation or tutorial!

Roadmap

There are few things that need to be ironed out to be 100% feature compatible with the original YarnSpinner.

  • Integration with Godot's translation/localization system.
  • Full support for format functions.
  • In-editor dialogue editor with preview.
  • Fully extend the documentation of this project.
    • Document the Option object.
    • Write the method descriptions for the Wol node.
    • Write a basic "Hello World"-esque tutorial.
    • Provide helpful anchors in the documentation.
  • Porting to usable signals in Godot.
  • Providing helpful errors when failing to compile.
  • Having a working repository with example code.

On request

If for whatever reason a lot of people want more documentation or certain features, here's some additional stuff I'll do:

  • Write a more advanced "Custom Wol Node" tutorial.
  • Perhaps write a little bit about the internals 🤷 (?).

Getting Help

There are several places to get help with Wol, and stay up to date with what's happening.

  • Follow me on Twitter or @ me!
  • Open an issue on Github!
  • Email bram [at] dingelstad.works for more indepth questions or inqueries for consultancy. You can also email me to hire me for all your Godot needs!

License

Wol is available under the MIT License. This means that you can use it in any commercial or noncommercial project. The only requirement is that you need to include attribution in your game's docs. A credit would be very, very nice, too, but isn't required. If you'd like to know more about what this license lets you do, tldrlegal.com have a very nice write up about the MIT license that you might find useful.

Made by Bram Dingelstad, kyperbelt & Secret Lab

Yarn Spinner was originally created by Secret Lab, an Australian game dev studio. Say hi to them for me!!

Started on Godot by kyperbelt (thank you so much for the initial work!) and completed by Bram Dingelstad. Say hi to me as well!

Help Me Make Wol & Secret Lab's Yarn Spinner!

Wol & Yarn Spinner needs your help to be as awesome as it can be! You don't have to be a coder to help out - we'd love to have your help in improving this or YarnSpinner's documentation, in spreading the word, and in finding bugs.

Documentation

Wol

Inherits from Node

Node for all interaction with Wol.

Description

Godot's Nodes as building blocks work really well. That's why this plugin gives you access to a simple node that does all the heavy lifting for you. It has several properties that you can change either in-editor or using GDScript (or any other compatible language) and signals you can use to listen to events coming from your dialogue.

Properties

Type Property Default value
String path ''
String starting_node 'Start'
bool auto_start false
bool auto_show_options false
bool auto_substitute true
Dictionary variable_storage {}

Methods

Return value Method name
void start ( String starting_node = 'Start' )
void pause ( )
void resume ( )
void select_option ( int id )

Signals

  • started ( )

    Emitted when the dialogue is started.

  • finished ( )

    Emitted when the dialogue is came to a stop, either through running out of dialogue or by using the <<stop>> command.

  • node_started ( String node )

    Emitted when a dialogue node is started. Has the node name as a parameter so you can see which node was started.

  • node_finished ( String node )

    Emitted when a dialogue node is started. Has the node name as a parameter so you can see which node was started.

  • line ( Line line )

    Emitted when a Line is emitted from the dialogue. line holds relevant information.

  • options ( Array options )

    Emitted when the dialogue runs into a set of options. Is emitted with an Array of Options.

  • command ( String command )

    Emitted when the dialogue executes a command. Use this signal to provide interactivity with your game world.

Property Descriptions

  • String path

    Default ''

    The path to your .yarn or .wol file. Must be a valid Yarn file otherwise the compiler will throw an error.

  • String starting_node

    Default 'Start'

    The node that is the starting point of the dialogue. Will automatically be the default for the start() function as well. The string should be a valid name for a Yarn node and be available in the file or an error will be thrown. You can always start from a different node by calling start('OtherStartingNode') for instance.

  • bool auto_start

    Default false

    If enabled, will automatically start the dialogue using the starting_node as the entrypoint.

  • bool auto_show_options

    Default false

    If enabled, will automatically show you options when they're available, rather than waiting for the player to resume to the line that has options.

  • bool auto_substitude

    Default false

    If enabled, will automatically substitute format functions and inline expressions for you. It's recommended to leave enabled, but if you want to manually do this for whatever reason, you can turn it off.

  • Dictionary variable_storage

    Default {}

    A Dictionary that holds all of the variables of your of your dialogue. All of the entries of this dictionary are accesible in your dialogue with a $ prefix. (e.g a_variable would be $a_variable). If you set a variable from within your dialogue, this dictionary will also be updated.

    In the future there'll be a signal added for when the variable_storage is updated.

Method Descriptions

  • start ( String starting_node = 'Start')

    Starts the dialogue at the starting_node (defaults to the value of self.starting_node which is Start) When the dialogue comes to a full stop through reaching the end or reaching a <<stop> command, you need to explicitly call this function instead of resume ( ).

  • pause ( )

    Pauses the dialogue until resume ( ) is called.

  • resume ( )

    Resumes the dialogue. Won't work when the dialogue comes to a full stop by reaching the end or reaching a <<stop>> command. You need to call start ( starting_node ) instead.

  • select_option ( int id )

    When getting an option from the options signal, use this function to let Wol node which option you want to select. Use Option.id for the id parameter.

Line

Inherits from Object

An object holding all information related to a line in your dialogue.

Description

The Line object is the object that you're gonna be interacting with the most. This object holds all of the information of the actual lines of dialogue. The most important property is text, but it has some additional properties you can make use of for debugging or holding of metadata (no support for that yet however).

Properties

Type Property
String text
String node_name
String file_name
Array substitutions
Array meta

Property Descriptions

  • String text

    A line of dialogue that's been processed by Wol. You can use this to set a Label in a text bubble above your character, add to a RichTextLabel for more dynamic stuff (Wol fully supports bbcode). Look at this repository's Dialogue.tscn and Dialogue.gd for some inspiration ;)

  • String node_name

    The name of the dialogue node this piece of dialogue came from.

  • String file_name

    The filename of the file where this piece of dialogue came from.

  • Array substitutions

    An Array of Strings that the result of Wol proccessing statements. Use this array if you disabled auto_substitutions and want to manually substitute your dialogue.

  • Array meta

    Currently unimplemented.

Option

Inherits from Object

An object holding information of an option in your dialogue.

Description

The Option object is anoter object that you're gonna be interacting with a lot. This object holds the information of a choice in your dialogue. It has a reference to a Line with it's line property so you can show the appropriate text to your player!

Properties

Type Property
int id
Line line
String destination

Property Descriptions

  • int id

    A unique identifier that you can use to communicate your option choice with select_option ( id ).

  • Line line

    A line of dialogue that's been processed by Wol. See Line for more details.

  • String destination

    The node that you will jump to when this option is selected. (Only relevant for jump questions, not inline ones).

Tutorial

The tutorial is currently under construction, stay tuned!