This repo houses bullet 2, the physics engine used within Stride, its C++ / C# wrapper and build scripts for the different supported platforms.

• bullet => Official bullet repo
• libbulletc => C++ wrapper
• BulletSharp => C# wrapper around C++ wrapper
• src => build scripts

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MAKE SURE YOU PULLED SUBMODULES WITH THIS REPO

Building bullet and its C++ wrapper:

• Windows x64 / x86 / Store / UWP / ARM msbuild:
  • Install Visual Studio 2015+ with C++, cmake and Windows Store/UWP requirements.

  • msbuild_winstore.bat

  • If you run into any issue (which you most likely will) good luck, CMakeLists wants to build everything, you'll have to fiddle around with it.
• Unix:

  • sudo apt install make

  • sudo apt install clang

  • cd /src

  • make

• Mac:

  • xcode-select --install

  • cd /src

  • make

• iOS:

  • xcode-select --install

  • Install xcode
  • Make sure that your terminal is in dev mode, look at xcode's preferences to change that

  • cd /src/iOS/bulletc

  • ./build.sh

• Android under Windows:
  • AndroidNDK

  • cd to C:\android-ndk-r19c or wherever you installed it

  • ndk-build -C path_to\BulletSharpPInvoke\src\Android\jni

  • (building is slow af, see those build files for more info)

Building BulletSharpPInvoke:

• Install latest .Net Standard
• Set BulletSharp.NetStandard.sln 's configuration to Release or ReleaseiOS if building for iOS
• Build through dotnet or your C# IDE

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Original README content:

BulletSharp

BulletSharp is a .NET wrapper for the Bullet physics library.

This version uses Platform Invoke. There is also an equivalent version written in C++/CLI: https://github.com/AndresTraks/BulletSharp

libbulletc is a C interface to Bullet. It compiles into a .dll or .so file that exports Bullet functions.

BulletSharpPInvoke is a .NET library that proxies calls from .NET to libbulletc.

The benefit of P/Invoke over C++/CLI is that it runs on all platforms that support P/Invoke into shared user-mode libraries (Windows, Unix, Mac OS). See also Supported platforms.