cl-sdl2 is a Common Lisp wrapper for the SDL 2.0 C Library, with many contributors, maintained primarily by the following:
- Chip Collier
- Ryan Pavlik
- Peter Keller
It is licensed under the MIT license.
sdl2 is in Quicklisp, see below for instructions.
SDL 2.0 C Library Install
On Linux, you can probably find SDL2 in your distribution's package set. For other platforms, or for building manually, download the source.
Debian based: Ubuntu, Mint etc
sudo apt-get install libsdl2-2.0
sudo pacman -S sdl2
If you need to compile from source for your Linux platform:
- Download source code
cd /tmp wget https://www.libsdl.org/release/SDL2-2.0.4.tar.gz tar -xzvf SDL2-2.?.?.tar.gz cd SDL2-2.?.? ./configure make sudo make install
This will install the SDL-2.0.x C Library into your /usr/local location.
It's generally a good idea to install at a minimum the version of SDL2 that was wrapped; however, sub revisions should not introduce binary incompatibility and should be fine. If you install a different version, certain features may not be available or may not work correctly.
sdl2 is best installed via QuickLisp, though for cutting-edge changes, you may want to install from github as below.
If you don't have Quicklisp, then follow the directions to install it. We assume you placed the Quicklisp repository in the default place as indicated by the directions and have added it to your lisp init file.
cd $HOME/quicklisp/local-projects git clone https://github.com/rpav/cl-autowrap.git git clone https://github.com/lispgames/cl-sdl2.git
Then, use quicklisp to install the libraries required by cl-sdl2:
Start your lisp. Then, just:
sdl2 enables certain restarts for friendly interaction with SLIME or Sly if you have either properly installed. "Proper installation" in this case means
slynk.asd is linked such that ASDF can find and load it.
Note this is easily achieved even if you have installed them from github or some other non-Quicklisp repository:
- Symlink the directory to
- Symlink the
Similarly you could just clone into
~/quicklisp/local-projects as well; this should work on Windows as well. There are numerous other options for configuring and managing ASDs, as well.
Running the sdl2 examples
Start your lisp:
(ql:quickload :sdl2/examples) (sdl2-examples:basic-test)
This example will open a window with an opengl primitive in it. Any mouse movements or keystrokes are recorded in the terminal (or emacs SLIME output buffer
*inferior-lisp*). Hitting the ESCAPE key will terminate the example.
Newer versions of OSX have had some difficulties as calls which require
nextEventMatchingMask must be called from the main thread of your program.
This is especially relevant to SBCL, although issues have also been noticed in CCL.
Currently, initialisation must take place on your main thread:
(ql:quickload :sdl2/examples) ;; We should be able to run examples as normal on CCL #-sbcl (sdl2-examples:basic-test) ;; SBCL requires that we initialise in the main thread #+sbcl (sdl2:make-this-thread-main #'sdl2-examples:basic-test)
Thank you for using sdl2!