urho3d.UrhoSharp

# UrhoSharp

UrhoSharp is a lightweight Game Engine suitable for using with C# and F# to create games and 3D applications. The game engine is available as a portable class library, allowing your game code to be written once and shared across all platforms. UrhoSharp is powered by Urho3D, a game engine that has been under development for more than a decade. More information can be found in the UrhoSharp documentation. The bindings for Urho3D are licensed under the MIT license, as found on the LICENSE file.

Key advantages:

• Lightweight - ~10mb per platform including basic assets
• Embeddable - can be embedded into any app as a subview (UIView, NSView, Panel, etc).
• Open-source - C# bindings and the underlying C++ engine Urho3D are licensed under the MIT License
• Powerful 3rd parties - Bullet, Box2D, Recast/Detour, kNet, FreeType
• Advanced graphics using physically based rendering (PBR), Skeletal animation, Inverse Kinematics etc
• Simple code-first approach (however, it still supports native Urho3D editor)

Supported platforms:

• Windows, WPF, WinForms
• iOS, tvOS
• macOS
• Android
• UWP
• AR: HoloLens, ARKit, ARCore
• Mixed Reality
• Xamarin.Forms (iOS, Android, UWP)
• Ubuntu
  
  
  

Samples

Sample code lives in https://github.com/xamarin/urho-samples and repository has them as a git submodule. Samples use UrhoSharp via nuget.

Setup

Available on NuGet:

• UrhoSharp - the main package, contains implementations for all platforms including native binaries and basic assets
• UrhoSharp.Tools - contains compiled binaries for AssetImporter and PackageTool for Windows and macOS
• UrhoSharp.WinForms - WinForms control
• UrhoSharp.WPF - WPF control
• UrhoSharp.Cocoa - Cocoa control (macOS)
• UrhoSharp.Forms - Xamarin.Forms support for iOS, Android and UWP
• UrhoSharp.SharpReality - HoloLens and Mixed Reality platforms
• UrhoSharp.HoloLens - deprecated. Was renamed to UrhoSharp.SharpReality

Quick start

To help developers get up and running quickly with UrhoSharp we are providing a solution template for Visual Studio (you can find it in "Online templates" tab). This template consists of PCL+Android+iOS+Mac/Windows with a simple scene and some assets (Xamarin Studio templates will be available soon):

How to build bindings

This is currently a little messy, so YMMV.

In order to compile binaries for all platforms you will need both Windows and OS X environment. Please follow these steps:

Compile UrhoSharp on macOS

• XCode
• Visual Studio for Mac
• CMake (brew install cmake)
• Command Line tools (xcode-select --install)
• Android NDK + ANDROID_NDK_HOME environment variable

1. Clone the repository including submodules

git clone [email protected]:xamarin/urho.git --recursive

2. Compile Urho.pch, SharpieBinder and generate bindigs

The following command will download Clang 3.7.0 if you do not have it installed, and use this to scan the Urho header files, then compile the sources to PCH, parse it via SharpieBinder and generate C# bindings. Additionally there is a perl script to generate bindings to Urho3D events.

make Generated

3. Compile UrhoSharp for Mac (fat dylib)

make Mac

it takes 5-10 minutes.

4. Compile UrhoSharp for iOS (fat dylib: i386, x86_64, armv7, arm64)

make iOS SDK_VER=11.2

5. Compile UrhoSharp for Android (armeabi, armeabi-v7a, arm64, x86, x86_64)

make -j5 Android

-j5 means a job per ABI. Make sure you have installed Android SDK and NDK (see MakeAndroid file) This target can also be executed on Windows.

Compile UrhoSharp on Windows

Obviously you can't do it on OS X so you have to switch to Windows environment. Make sure you have installed:

• Visual Studio 2017
• CMake 3.10
• GNU make (cygwin) - the easiest way to install it is to follow instructions to install mono:
  • Download Cygwin from www.cygwin.com (setup-x86-64.exe)
  • Run the following command in cmd.exe to install the required packages: setup-x86_64.exe -P autoconf,automake,bison,gcc-core,gcc-g++,mingw64-i686-runtime,mingw64-i686-binutils,mingw64-i686-gcc-core,mingw64-i686-gcc-g++,mingw64-i686-pthreads,mingw64-i686-w32api,mingw64-x86_64-runtime,mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pthreads,mingw64-x86_64-w32api,libtool,make,python,gettext-devel,gettext,intltool,libiconv,pkg-config,git,curl,wget,libxslt,bc,patch
  • Execute Cygwin.bat and navigate to the folder where UrhoSharp is located (e.g. cd /cygdrive/c/projects/urho)

Execute:

make Windows

Then, open Urho.sln and compile UrhoSharp.Windows project in Release configuration. By default, Urho on windows uses OpenGL, but you can also use DirectX11. In order order to use it, execute:

make Windows_D3D11

And compile `UrhoSharp.WindowsD3D' project. All compiled binaries could be found in the Bin/{platform} folder.

Compile UrhoSharp for UWP and HoloLens

Execute:

make UWP
make SharpReality

And compile UrhoSharp.UWP and UrhoSharp.SharpRealitys projects in Release configuration.

Compile UrhoSharp on Ubuntu or WSL (Windows Subsystem for Linux)

Special thanks to https://gist.github.com/aktowns
Disclaimer: I am not a linux guy so I am not sure which packages from the following list are required, probably some of them are not:

sudo apt-get install cmake clang-3.7 avr-libc libglew-dev libsdl2-dev libsdl2-image-dev libglm-dev libfreetype6-dev libgl1-mesa-dev libx11-dev

Then just execute:

make Linux

Updating Documentation

Once you have a build, run the refresh-docs target, like this:

make refresh-docs

This will update the documentation based on the API changes. Then you can use a tool like DocWriter [1] on the Mac to edit the contents, or just edit the ECMA XML documentation by hand with an XML editor.

[1] http://github.com/xamarin/DocWriter