How to Contribute to open.mp Development

Updated

open.mp is a multiplayer mod for Grand Theft Auto: San Andreas that is fully backwards compatible with San Andreas Multiplayer (SA:MP). Its server is fully open source, and the project welcomes all contributions, big or small. You can contribute by reporting bugs, helping write the next version, or getting involved through the project's GitHub organization. The main entry points are the GitHub organization for general contributions and the SDK repository if you want to work with the C++ API.

Ways to contribute

The project describes community-driven development as a core part of how it operates. Based on the site's own description, contributions can take several forms:

  • Report problems. The site states that despite attempts to have perfect code, bugs happen, and user feedback is valuable. If you find an issue, posting about it is a legitimate contribution.
  • Help write the next version. The project explicitly invites people to help write the next version of the server.
  • Contribute code or fixes. Because the server is fully open source, code contributions of any size are welcome.
  • Improve the server through the C++ API. Once you have mastered the extensible C++ API, the site suggests helping improve the server via the open contribution process on GitHub.

Where to start

Goal Where to go
General contributions, issues, and discussion The open.mp GitHub organization
Working with the C++ API / server internals The SDK repository
Learning the scripting system before contributing The project's docs

The site points to a GitHub organization for community contributions and to an SDK repository for the C++ side. If your interest is in scripting, the docs are the place to learn about the improved scripting system before you start changing code.

What you can build on

Understanding the project's technical surface helps you decide where your contribution fits:

  • Scripting system. The project kept pawn but introduced a new compiler engineered to make code more robust, along with more functions to manipulate the server and client. If you write or maintain scripts, improvements and fixes in this area are directly relevant.
  • Backwards compatibility. Existing scripts and clients remain compatible. An old AMX can be loaded on the open.mp server out of the box, and players can join using the SA:MP client. This means contributions generally do not need to break existing SA:MP scripts to be useful.
  • Extensible C++ API. The C++ API exposes all the server features available in pawn, plus the broader universe of C++ libraries and frameworks. This is the path for contributors who want to extend the server itself rather than write scripts.

A practical approach

  1. Decide which layer you want to work on: scripts (pawn), the server core, or the C++ API.
  2. Read the docs for the scripting system if your contribution touches scripts, so your changes match the current compiler and function set.
  3. Go to the GitHub organization, look at open issues, and pick something that matches your skill level — the project states that contributions big or small are welcome.
  4. If you are extending server features, check the SDK repository for the C++ API.
  5. Submit your change or report through GitHub, following the project's open contribution process.

Common sticking points

  • Assuming you need to rewrite everything. Backwards compatibility is a stated feature, so you can often improve or extend without breaking existing SA:MP scripts.
  • Skipping the docs. The scripting system uses a new compiler and additional functions; contributing without reading the docs risks working against the current design.
  • Thinking contributions must be large. The project explicitly welcomes small contributions, including simply posting about problems you find.

If you are unsure where you fit, start by reporting an issue or reading the docs, then move to code once you understand the area you want to improve.