S³ - Seton's Special Sauce

An umbrella "everything mod" for Railroader, built on Unity Mod Manager.

S³ is a thin core that hosts independent, optional modules, each disabled by default. Open the S³ settings page in the UMM in-game menu and expand a module's foldout to enable and configure it. Module enable/disable applies on the next game launch.

I originally planned on releasing individual mods, but considering my workflow of just making what I want when I want it, I figured a unified platform for all my tweaks and additions would be more convenient for myself (one repo to manage) and the community.

Modules

Module	What it does
Physics Optimizer	Cuts CPU spent on train physics (LOD fast-path + auto-freeze), with a profiler overlay and debug car tinting. Console: /rpf
Map Popout	Detaches the in-game map into a separate resizable window for a second monitor. Optional MapEnhancer integration.

Both are disabled by default - You must enable them per-module from the S³ settings page, a game restart is required for this to take effect. More modules will follow - S³ is designed to grow.

Migrating from the standalone mods

S³ replaces the separate Physics Optimizer (RailroaderPhysicsOverhaul) and PopOut Windows (RRPopout) mods. Uninstall those before installing S³. Settings do not carry over, so re-configure each module from the S³ settings page.

If these mods are detected you will be prompted to disable them in the S³ settings page.

Building

Requires the .NET SDK (dotnet). The native module additionally needs CMake + the MSVC toolchain.

• Local test install: .\dist\build-local.ps1 builds and copies into the game's Mods\S3\ folder.
• Release zip: .\dist\build-release.ps1 produces dist\SetonsSpecialSauce-<version>.zip for upload.

The game install path is set once in Directory.Build.props (GameDir); override per-build with /p:GameDir=... or the build script's -GameDir parameter.

Layout

src/            single managed assembly (S3.dll, netstandard2.1)
  Main.cs       UMM entry point
  Core/         module framework: IModule, registry, settings, settings panel
  Modules/      one folder per module
native/         shared Win32 + D3D11 + Dear ImGui external-window UI engine
dist/           build + packaging scripts