1. DotRecast is a port of C++'s [recastnavigation](https://github.com/recastnavigation/recastnavigation) and Java's [recast4j](https://github.com/ppiastucki/recast4j) to the C# language.
Recast is accompanied by Detour, a path-finding and spatial reasoning toolkit. You can use any navigation mesh with Detour, but of course the data generated with Recast fits perfectly.
Detour offers a simple static navmesh data representation which is suitable for many simple cases. It also provides a tiled navigation mesh representation, which allows you to stream of navigation data in and out as the player progresses through the world and regenerate sections of the navmesh data as the world changes.
You can find a comprehensive demo project in the `DotRecast.Recast.Demo` folder. It's a kitchen sink demo showcasing all the functionality of the library. If you are new to Recast & Detour, check out [SoloNavMeshBuilder.cs](/src/DotRecast.Recast.Demo/Builder/SoloNavMeshBuilder.cs) to get started with building navmeshes and [TestNavmeshTool.cs](/src/DotRecast.Recast.Demo/Tools/TestNavmeshTool.cs) to see how Detour can be used to find paths.
1.`DotRecast.Recast.Demo` uses [dotnet 8](https://dotnet.microsoft.com/) to build platform specific projects. Download it and make sure it's available on your path, or specify the path to it.
It is recommended to add the source directories `DotRecast.Core`, `DotRecast.Detour.Crowd`, `DotRecast.Detour.Dynamic`, `DotRecast.Detour.TitleCache`, `DotRecast.Detour.Extras` and `DotRecast.Recast` into your own project depending on which parts of the project you need. For example your level building tool could include `DotRecast.Core`, `DotRecast.Recast`, and `DotRecast.Detour`, and your game runtime could just include `DotRecast.Detour`.
