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Orion

Orion is a hobby 3D game engine project. It currently supports Linux and Windows (64-bit).

License

Orion is licensed under the ISC license, see license.txt for details.

Prerequisites

Linux

You must also install the following requirements (including their development packages):

  • SCons
  • LLVM/clang
  • SDL (2.x)
  • freetype2
  • Bullet (2.x)
  • GLEW (when building GL support)
  • Vulkan SDK (when building Vulkan support)

Windows

Building on Windows requires Visual Studio and SCons to be installed. All other library dependencies are pre-built and included in the repository. SCons needs to be added to your PATH.

Currently, SCons (2.5.1) does not properly support VS2017. However, it works if you run "vcvarsall.bat x64" from the Visual Studio developer command prompt.

To build Vulkan support, the LunarG Vulkan SDK must be installed.

Building

After cloning the repository you first need to clone submodules containing some external libraries:

$ git submodule update --init

You can then build by running SCons:

$ scons

And finally run the test game (Cubes) with:

$ build/release/cubes

A number of options can be passed to SCons to configure the build, which will be saved until the next time they are specified. The following options are supported:

  • APP: Selects the application to build, look in the apps directory for what's available. Defaults to cubes (the test game).
  • BUILD: Either debug or release. The built program will be in build/$BUILD. Debug builds disable optimisation and include many more checks.
  • GPU_API: Either gl or vulkan. Selects the GPU backend to use.

Example:

$ scons BUILD=debug GPU_API=vulkan

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Hobby game engine project (discontinued)

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