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Installation

Scelo Atlas is a C++ plugin for Unreal Engine 5.8. It compiles once on first build and needs no further tooling after that.

Prerequisites

  • Unreal Engine 5.8 installed via the Epic Games Launcher
  • A C++ toolchain:
  • Windows — Visual Studio 2022 with the "Game development with C++" workload
  • macOS — Xcode
  • Linux — the clang toolchain
  • A C++ UE project. A Blank C++ project is fine; a Blueprint-only project will prompt to convert when it detects plugin source — accept it.

Install steps

  1. Close the Unreal Editor.
  2. In your project folder, create a Plugins directory if it doesn't exist: MyProject/Plugins/
  3. Unzip the plugin so you get: MyProject/Plugins/SceloAtlas/SceloAtlas.uplugin (plus Source/, Content/, Data/, Docs/ …)
  4. Right-click MyProject.uproject → Generate Visual Studio project files.
  5. Open the generated solution and Build (Development Editor | Win64) — or simply double-click the .uproject and let the editor offer to compile.
  6. In the editor: Edit → Plugins, search "Scelo Atlas", confirm it is enabled. It auto-enables, and the Niagara and Water engine plugins are pulled in automatically as declared dependencies. Restart if prompted.
  7. Verify: the Tools menu now contains Scelo Atlas — Quick Start.

First build notes

v0.2.1 compiles clean on UE 5.8.0 (Windows/MSVC). If you build against a different engine version, minor API drift is possible — read the first error only, fix, rebuild. If a Niagara include fails, confirm the Niagara plugin is enabled in your project.

Smoke test

  1. Press Play in any level — an empty level is fine.
  2. Open the console (~) and run: Scelo.RunMonteCarlo 10000
  3. The Output Log should print: Scelo Atlas: starting Monte Carlo — 60 locations, 20 events, 10000 years. and, a moment later: Scelo Atlas: Monte Carlo complete. Years=10000 AAL=… TVaR99=… AEP250=…

That's the whole engine working: the bundled Florida portfolio, the Atlantic catalog and the vulnerability curves, priced over 10,000 simulated years on a background thread.

Continue to the Quick start.

Uninstall

Delete MyProject/Plugins/SceloAtlas/ and regenerate project files. The plugin stores nothing outside its folder except files you explicitly export.