# BackroomsNoise C++ Plugin

This native plugin provides high-performance noise generation for the Backrooms map system using **FastNoiseLite**.

## Files
- `BackroomsNoise.cpp`: C wrapper for Unity P/Invoke.
- `FastNoiseLite.h`: The noise library (ensure you have the full version from [GitHub](https://github.com/Auburn/FastNoiseLite)).

## How to Build (Windows MSVC)

1. Open **Developer Command Prompt for VS**.
2. Navigate to this directory.
3. Run:
   ```cmd
   cl /LD /O2 /EHsc BackroomsNoise.cpp /Fe:BackroomsNoise.dll
   ```
4. Copy `BackroomsNoise.dll` to the `Assets/Plugins/` folder in Unity.

## How to Build (Cross-platform with CMake)

1. Create a `CMakeLists.txt`:
   ```cmake
   cmake_minimum_required(VERSION 3.10)
   project(BackroomsNoise)
   add_library(BackroomsNoise SHARED BackroomsNoise.cpp)
   ```
2. Build as usual.

## Usage in Unity
The `NativeNoiseProvider.cs` script will automatically attempt to load `BackroomsNoise.dll`. If it fails, it will fall back to Unity's built-in `Mathf.PerlinNoise`.