GodotJS

This project adds TypeScript/JavaScript Support for Godot 4.x by leveraging the high-performance capabilities of V8 to bring the delightful development experience of TypeScript into Godot. Meanwhile, it also supports switching to QuickJS as an alternative runtime.

[!NOTE] The core functionality is implemented and essentially usable but still under testing.

Features

• [x] Godot ScriptLanguage integration
• [x] Debug with Chrome devtools when using V8
• [x] REPL in Editor
• [x] Hot-reloading
• [x] QuickJS as an alternative runtime (experimental, testing)
• [ ] Asynchronous module loading (import function)
• [ ] Sandboxed scripting (not multi-threading)
• [ ] Worker threads

Get Started

Before initiating, make sure to select the JavaScript runtime you prefer between v8 and QuickJS:

• v8 is proven to be one of the most powerful and high-performance JavaScript runtimes
• QuickJS is a remarkable and lightweight option

Option 1: v8

v8 is used as the default JavaScript runtime. Follow the instructions below to set it up:

STEP 1: Download or clone the repo into the modules directory of your Godot engine source:

cd YourGodotEngineSource/modules
git clone https://github.com/ialex32x/GodotJS.git

STEP 2: Put v8 headers and libraries into GodotJS, or directly download the prebuilt v8 from GodotJS-Dependencies:

# download the archive of prebuilt v8 
curl https://github.com/ialex32x/GodotJS-Dependencies/releases/download/v8_r11/v8_r11.zip --output your/download/path/v8.zip

# extract the zip file into your `GodotJS` directory, 
# NOTE: no white space after the switch `-o`
7z x -o"YourGodotEngineSource/modules/GodotJS" your/download/path/v8.zip 

[!NOTE] Don't forget to put the headers/libraries of v8 into the same directory structure used in prebuilt v8 if you decide to compile it by yourself.

The module directroy structure looks like this:

┗━ godot
    ┗━ modules
        ┣━ ...
        ┣━ gltf
        ┣━ GodotJS
        ┃    ┣━ bridge-quickjs
        ┃    ┣━ bridge-v8
        ┃    ┣━ ...
        ┃    ┣━ lws
        ┃    ┗━ v8
        ┃        ┣━ include
        ┃        ┣━ linux.x86_64.release
        ┃        ┣━ macos.arm64.release
        ┃        ┣━ windows_x86_64_release
        ┃        ┗━ ...
        ┣━ gridmap
        ┣━ ...

The currently used version of v8 is 12.4.254.20.

STEP 3: Compile and launch Godot Editor. Then, install TypeScript/JavaScript presets into a Godot project.

[!NOTE] Since the prebuilt v8 library is built with the windows-latest github runner which uses VS2022, encountering Unresolved external symbol errors during linkage with v8_monolith.lib or libucrt.lib may be addressed by updating to the latest version of the MSVC v143 toolchain, Windows Universal CRT SDK and Visual Studio 2022 itself. See GodotJS-Dependencies README for the version of MSVC C++ Compiler used in different prebuilt library packages.

A prebuilt version of Godot Editor can be downloaded from GodotJS-Build.
Because the GodotJS-Build workflow is currently run manually, it may not be built from the latest commit of GodotJS.

Option 2: QuickJS

[!NOTE] QuickJS support may not be stable enough to use.

To enable QuickJS, please run scons with the parameter use_quickjs=yes.

# An example on Windows:
scons vsproj=yes dev_build=yes p=windows use_quickjs=yes 

Examples

For more information on how to use GodotJS in a project, check out GodotJSExample for examples written in typescript.
And, don't forget to run npm install and npx tsc before opening the example project.

More Details

Scripting

• GodotJS Scripts
• Godot Bindings
• Running code in the editor
• Signals

Utilities

• REPL
• SourceMap
• Debugger

Advanced

• Build V8
• QuickJS
• Dependencies
• Compiler Options
• Unit Testing
• Misc

Auxiliary Repositories

• GodotJSExample: An example godot project for demonstrating how to use GodotJS
• GodotJS-Build: Github workflows for building Godot Editor with GodotJS support
• GodotJS-Dependencies: Github workflows for building dependencies of GodotJS (v8, lws)

Supported Platforms

Android: tested on ndk_platform=android-24
Currently, except for the web, 32-bit platforms are not considered to support.