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CONTRIBUTING.md

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Contributing to SlimeVR

This document describes essential knowledge for contributors to SlimeVR.

How to get started

Getting the code

First, clone the codebase using git. If you don't have git installed, go install it.

# Clone repositories
git clone --recursive https://github.com/SlimeVR/SlimeVR-Server.git

# Enter the directory of the codebase
cd SlimeVR-Server

Now you can open the codebase in your favorite IDE or text editor.

Building the code

The code is built with gradle, a cli tool that manages java projects and their dependencies. You can build the code with ./gradlew build and run it with ./gradlew run.

Code Style

Code is autoformatted with spotless. Code is checked for autoformatting whenever you build, but you can also run ./gradlew spotlessCheck if you prefer.

To autoformat your code from the command line, you can run ./gradlew spotlessApply. We recommend installing support for spotless in your IDE of choice, and formatting whenever you save a file, to make things easy.

If you need to prevent autoformatting for a particular region of code, use // @formatter:off and // @formatter:on

Setting up spotless in VSCode

  • Install the richardwillis.vscode-spotless-gradle extension
  • Add the following to your workspace settings, at .vscode/settings.json:
"spotlessGradle.format.enable": true,
"editor.formatOnSave": true,
"[java]": {
	"editor.defaultFormatter": "richardwillis.vscode-spotless-gradle"
}

Setting up spotless for IntelliJ

Setting up Eclipse autoformatting

Import the formatting settings defined in spotless.xml, like this:

  • Go to File > Properties, then Java Code Style > Formatter
  • Check Enable project specific settings
  • Click Import, then open spotless.xml, then Apply
  • Go to Java Editor > Save Actions
  • Select Enable project specific settings, Perform the selected actions on save, Format source code, Format all lines

Eclipse will only do a subset of the checks in spotless, so you may still want to do ./gradlew spotlessApply if you ever see an error from spotless.

Code Licensing

SlimeVR uses an MIT license, and some parts of the project use a dual MIT/Apache 2.0 license. Be sure that any code that you reference, or dependencies you add, are compatible with these licenses. GPL-v3 for example is not compatible because it requires any and all code that depends on it to also be licensed under GPL-v3.

Discord

We use discord a lot to coordinate and discuss development. Come join us at https://discord.gg/SlimeVR!