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ink-Unity integration

This Unity package allows you to integrate inkle's ink narrative scripting language with Unity and provides tools to compile, play and debug your stories.

Overview

  • Using ink in your game: Allows running and controlling ink files in Unity via the C# runtime API.

  • ink player: Provides a powerful Ink Player Window for playing and debugging stories.

  • Auto compilation: Instantly creates and updates a JSON story file when a .ink is updated.

  • Inspector tools: Provides an icon for ink files, and a custom inspector that provides information about a file.

Getting started

📥 Downloading the package

As a UPM Package (Recommended)

  • Navigate to OpenUPM and click "Get installer.unitypackage".
  • Open the downloaded file. The installer will do the rest!
  • The project will have installed at Packages > Ink Unity Integration.
  • Demo projects can be imported from Packages > Ink Unity Integration > Examples

As a .UnityPackage

This will import the source into your Assets folder. This is a good option if you intend to edit the source for your own needs.

Via the Asset Store

For convinience a .UnityPackage is hosted at the Unity Asset Store. This version is updated rarely, and so is not recommended. This will import the source into your Assets folder. This is a good option if you intend to edit the source for your own needs.

From GitHub

You can fork the project on GitHub.

🎮 Demos

This project includes a demo scene, providing a simple example of how to control an ink story with C# code using Unity UI.

(If you imported this package as a UPM (recommended), then you must first import the demos from Packages > Ink Unity Integration > Examples)

To run a demo, double-click the scene file at the root of the demo folder to open it, and press the Play button at the top of the screen to start it.

📄 C# API

The C# API provides all you need to control ink stories in code; advancing your story, making choices, diverting to knots, saving and loading, and much more. It is documented in the main ink repo For convenience, the package also creates an (Help > Ink > API Documentation) menu option.

✏️ Writing ink

For more information on writing with ink, see the documentation in the main ink repo. For convenience, the package also creates an (Help > Ink > Writing Tutorial) menu option.

Further Help

For assistance with writing or code, Inkle's Discord forum is full of lovely people who can help you out!

To keep up to date with the latest news about ink sign up for the mailing list.

Features

Compilation

Ink files must be compiled to JSON before they can be used in-game. This package compiles all edited ink files automatically. By default, compiled files are created next to their ink file.

Editor Compilation

This package provides tools to automate this process when a .ink file is edited.

Disabling auto-compilation: You might want to have manual control over ink compilation. If this is the case, you can disable "Compile ink automatically" in the InkSettings file or delete the InkPostProcessor class.

Manual compilation: If you have disabled auto-compilation, you can manually compile all ink files using the Assets > Recompile Ink menu item, individually via the inspector of an ink file, or via code using InkCompiler.CompileInk().

Play mode delay: By default, ink does not compile while in play mode. This can be disabled in the InkSettings file.

In-game Compilation

The compiler is included in builds (See WebGL best practices for information on removing it), enabling you to allow the editing of ink files as part of your game.

Ink Player Window

The Ink Player Window (Window > Ink Player) allows you to play stories in an editor window, and provides functionality to edit variables on the fly, test functions, profile performance, save and load states, and divert.

To play a story, click the "play" button shown on the inspector of a compiled ink file, or drag a compiled ink story TextAsset into the window.

Editor Attaching: Attaching the InkStory instance used by your game to the Ink Player window allows you to view and edit your story as it runs in game.

See BasicInkExampleEditor.cs in the Examples folder for an example of how to:

  • Show an attach/detach button on an inspector
  • Automatically attach on entering play mode

More information on using and extending Ink Player Window

Inspector tools

This package replaces the icon for ink files to make them easier to spot, and adds a custom inspector for a selected ink file.

The Inspector: Selecting an ink file displays its last compile time; lists any include files; and shows any errors, warnings or todos. It also shows a Play button which runs the story in the Ink Player Window.

Visual Scripting Support

Bolt

There is currently no support for Bolt, Unity's official visual scripting tool. If you're interested in building one, we'd love to see it!

PlayMaker

There's unofficial support for PlayMaker here.

We'd love to see this supported more if you'd like to assist the effort!

Source control tips

When you edit ink files, the compiler will also update the corresponding compiled .json file. If no compiled file existed before, Unity will also create a meta file for it. It is recommended that you always commit both ink and json files at the same time to avoid the file being re-compiled by your team members.

Adding or removing ink files will also make changes to the InkLibrary file, and we could recommend authors also commit this file for the same reasons.

WebGL best practices

WebGL builds should be as small as possible. The ink compiler is included in builds, but is typically only used in the editor. If your game doesn't require compiling ink at runtime we recommend adding a .asmdef at Ink Unity Integration > InkLibs > InkCompiler that only functions in the editor.

FAQ

  • Is the Linux Unity Editor supported?

    Yes!

  • What versions of Unity are supported?

    We officially support 2018 LTS and above, but it should work going back to at least Unity 5.

Support us!❤️

Ink is free, forever; but we'd really appreciate your support! If you're able to give back, generous donations at our Patreon mean the world to us.

License

ink and this package is released under the MIT license. Although we don't require attribution, we'd love to know if you decide to use ink a project! Let us know on Twitter or by email.

The MIT License (MIT)

Copyright (c) 2016 inkle Ltd.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Unity integration for the open source ink narrative scripting language.

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