Mibo.Raylib 1.3.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer prerelease version of this package available.
See the version list below for details. 
dotnet add package Mibo.Raylib --version 1.3.0
                    


                    

                
NuGet\Install-Package Mibo.Raylib -Version 1.3.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Mibo.Raylib" Version="1.3.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Mibo.Raylib" Version="1.3.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Mibo.Raylib" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Mibo.Raylib --version 1.3.0
                    


                    

                
#r "nuget: Mibo.Raylib, 1.3.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Mibo.Raylib@1.3.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Mibo.Raylib&version=1.3.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Mibo.Raylib&version=1.3.0
                    


                            Install as a Cake Tool

Mibo.Raylib

Install the templates:

dotnet new install Mibo.Raylib.Templates
dotnet new mibo-2d -o MyGame
cd MyGame
dotnet run

NOTE for ADVENTURERS: raylib is a programming library to enjoy videogames programming; no fancy interface, no visual helpers, no debug button... just coding in the most pure spartan-programmers way.

Following that spirit, Mibo.Raylib keeps it lean, just F# and the Elmish loop with a handful of commodities to get out of your way and let you enjoy the craft.

Mibo.Raylib is a port of my first attempt at this Mibo micro-framework from MonoGame to raylib-cs, designed to allow F# developers to write games using familiar Elmish patterns for all kinds of game genres and sizes.

Mibo aims to solve 80/20 of use cases for enabling developers to focus on game logic rather than boilerplate code, providing guidelines and architecture for structuring game code, handling input, rendering, asset management, and time management among others.

What's in the box?

  • Elmish runtime (MVU loop) with Cmd, Sub, optional fixed timestep, and frame-bounded dispatch
  • Input — raw input (Keyboard, Mouse) + semantic mapping via InputMap / ActionState
  • Assets — texture, font, sound, and model loading caches
  • Rendering — Command buffer based rendering:
    • 2D batch renderer with layers and multi-camera support
    • 3D batch renderer with opaque/transparent passes and custom shader switching
    • Escape hatches for custom GPU work
  • Camera helpers with screen-to-world, orbit, and ray casting
  • Layout — 2D procedural grid layout (CellGrid2D) with platformer, top-down, and geometric primitives
  • Layout3D — 3D voxel-style grid layout (CellGrid3D) with terrain, interior rooms, corridors, stairs, and procedural generation
  • Animation — sprite sheet slicing, AnimatedSprite state machines, and grid-based animation definitions
  • Input Mapper — Listen to raw input and map it to semantic actions

Getting started

Prerequisites:

  • .NET SDK 8 or later
  • A working OpenGL setup
dotnet --version
dotnet tool restore
dotnet restore
dotnet build
dotnet test

To build the docs site locally:

dotnet tool restore
dotnet fsdocs build
# or for live editing:
dotnet fsdocs watch

Run the samples

2D Platformer:

dotnet run --project samples/PlatformerSample

Controls: WASD / Arrows to move, Space to jump, R to respawn.

3D Platformer:

dotnet run --project samples/ThreeDSample

Controls: WASD (camera-relative), Space to jump.

License

Mibo.Raylib is distributed under the zlib/libpng License.

Built on

Mibo.Raylib is built on top of:

  • raylib — the cross-platform graphics library that powers the rendering, input, and audio layers
  • raylib-cs — the C# bindings that make raylib accessible from .NET

Feedback

Issues and PRs are very welcome. If you're interested in using F# for game development beyond simple 2D games, Mibo.Raylib aims to be a practical, batteries-included framework that scales with your ambition.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.0.0-rc-003 31 7/7/2026
2.0.0-rc-002 40 7/7/2026
2.0.0-rc-001 50 7/2/2026
1.3.0 113 6/13/2026
1.2.0 101 6/8/2026
1.1.0 114 6/1/2026
1.0.0 103 5/31/2026

### Added

- `HeadlessProgram` and `HeadlessRunner` for running the Elmish update loop without graphics, input polling, or Raylib initialization. Use for unit testing, server-side simulation, and CLI debugging.
- `HeadlessProgram.mkHeadless init update` — creates a headless program with the same `Init`/`Update` signatures as `Program`.
- `HeadlessProgram` builder DSL: `withSubscribe`, `withTick`, `withFixedStep`, `withDispatchMode`, `withObserver`.
- `HeadlessProgram.observe` — helper that creates a `System.IObserver<'T>` from an `onNext` callback, hiding the `OnError`/`OnCompleted` boilerplate.
- `HeadlessRunner` with explicit frame control: `Step(TimeSpan)`, `StepN(count, TimeSpan)`, `StepUntil(predicate, TimeSpan, ?maxFrames)`.
- `HeadlessRunner.Dispatch(msg)` and `DispatchMany(msgs)` for sending messages from outside the update loop.
- `HeadlessRunner.Model`, `GameTime`, `ShouldQuit` for accessing simulation state.
- `HeadlessRunner.Run(interval, ?ct)` — returns `seq<struct(GameTime * 'Model)>`, a paced synchronous sequence of simulation frames. Uses spin-wait with `Thread.Sleep(1)` for timing.
- `HeadlessRunner.RunAsync(interval, ct)` — returns `IAsyncEnumerable<struct(GameTime * 'Model)>`, a paced async sequence of simulation frames. Uses `PeriodicTimer` for efficient timing.
- Observer support: `HeadlessProgram.Observers` field and `withObserver` DSL for registering `System.IObserver<struct(GameContext * 'Model * GameTime)>` factories. Observers fire every frame after the update loop, receiving the current model and game time. Observers implementing `IDisposable` are disposed when the runner is disposed.
- 27 unit tests for new features: step return values, observer lifecycle, observer correctness (post-update model, GameTime accumulation, multiple observers, window dimensions, subscription interaction), Run/RunAsync enumeration, cancellation, and ShouldQuit behavior. 47 total headless tests.
- XML documentation for `HeadlessProgram.withTick`, `withFixedStep`, and `withDispatchMode`.
- Headless mode documentation: Observers section (`withObserver`/`observe`), `Run`/`RunAsync` section with pacing and cancellation examples, server simulation example using observer-based broadcast.