Guides ​

Each guide builds one real addon from an empty folder, with the finished code, the commands to try it, and what players see when something it needs is missing. The registry pages explain each idea in depth. The guides link to them as they go.

Change what's already there ​

  • A livery: a Red Bull repaint on the stock car for every year, on one year's own car, or as an extra choice in the livery picker.
  • An engine sound pack: a V10 for the Ferrari, in every year or only in Classic Seasons 2017.
  • A what-if history editor: a launcher page where players change each season's grid and driver ratings in Progressive Career, without touching its files.

Add something new ​

  • A track: Hockenheim, offered in every Grand Prix and Time Trial box it fits, and in career calendars.
  • A year pack: a whole 2008 season box, with its cars, teams, drivers, rules and career data.
  • A career mode: a career that runs 2008 to 2012 on year packs, changing the grid at each season break.
  • A HUD element: a dial in the race HUD with a speed text, a gear text, an RPM sweep and an ERS bar, driven by the game's values and the live state.

Bring a system the game doesn't have ​

  • Your own system: F1 1990's six-compound tyre range as its own registry, which other addons extend with a new compound or tweak with a layer.

New to addons? Start with What you can build, then Your first addon.

Moving a big HUD addon over? Moving Project Halo onto the std lib maps each file to its std replacement.

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