You will need the following libraries installed:

• sdl2
• sdl2-image
• sdl2-ttf
• libffi
• chipmunk

You will need installed and working quicklisp for it.

• Clone our patched cl-sdl2-ttf wrapper:

  git clone https://github.com/pkulev/cl-sdl2-ttf.git ~/quicklisp/local-projects/cl-sdl2-ttf
      

• Clone our chipmunk wrapper:

  git clone https://github.com/vaartis/cl-chipmunk.git ~/quicklisp/local-projects/cl-chipmunk
      

• Let quicklisp know about o2 system:

  # clone directly to local-projects
  git clone https://github.com/pkulev/o2.git ~/quicklisp/local-projects/o2
  # or create symlink
  ln -s /path/to/o2 ~/quicklisp/local-projects/o2
      

• Load system into the running REPL and run the game:

  (ql:quickload :o2-game)
  (o2-game:main)  ; run the game
      

(ql:quickload :o2/examples)
(o2/examples::main)

The source code is provided under the MIT license, you can find a copy in LICENSE.

The assets are provided under the CC-BY-SA-4.0 license, you can find a copy in CC-BY-SA-4.0.