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README.md

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+# VisualScript module for Godot
+
+This repository contains the implementation of the "VisualScript" visual
+scripting language which used to be included directly in
+[Godot Engine](https://godotengine.org/) from Godot 3.0 until its removal in
+Godot 4.0.
+
+[See this blog post](https://godotengine.org/article/godot-4-will-discontinue-visual-scripting)
+for details on why the VisualScript implementation was removed from Godot 4.0.
+
+This repository has two aims:
+
+- Initially, this is a straight copy of the `modules/visual_script/` folder in
+  the Godot source tree, and can still be compiled as such to restore this
+  functionality in Godot 4.0.
+- Ideally, if there is community interest and participation, we would like this
+  module (which needs to be compiled together with the engine in a custom build)
+  converted to use GDExtension via [godot-cpp](https://github.com/godotengine/godot-cpp),
+  allowing it to be distributed as a compiled library that can add this
+  functionality back to a stock Godot build. As an extension, this feature could
+  also evolved more freely, attracting new contributors with innovative ideas,
+  and thus become a better visual scripting solution than what we had in the
+  Godot 3.x era.
+
+## Compiling
+
+For now this is still a C++ module, so it needs to be compiled together with
+Godot as a custom build.
+
+[See the Godot documentation](https://docs.godotengine.org/en/latest/development/compiling/)
+for instructions on how to compile the engine.
+
+To add this module, it should be cloned or copied as the `modules/visual_script/`
+folder in the Godot source tree.
+
+For example:
+
+```
+git clone https://github.com/godotengine/godot
+cd godot/modules
+git clone https://github.com/godotengine/godot-visual-script visual_script
+cd ..
+scons
+```
+
+Note that a custom `visual_script` name is given for this repository's clone, so
+that the final structure looks like `modules/visual_script/` and not
+`modules/godot-visual-script/`.
+
+## Contributing
+
+If you're interested in working on porting this C++ module to GDExtension,
+please join the `#scripting` (to discuss VisualScript) and `#gdextension` (to
+discuss GDExtension and `godot-cpp`) on the [Godot Contributors Chat](https://chat.godotengine.org).