Updates

[2006-09-02] Lispbuilder has superceded Corman-SDL. I will add support for Corman Lisp to Lispbuilder in the very near future.
[2004-06-09] Updated Corman-SDL for SDL v1.2.7; See here
[2004-04-16] Corman-SDL is now under the BSD license.
[2004-04-16] The latest development sources for Corman-SDL can now be accessed via CVS, hosted at common-lisp.com.
[2003-12-15] The Corman Lisp, SDL HOWTO is now online.

Introduction

Corman-SDL provides the FFI (Foreign Function Interface) bindings necessary for Corman Common Lisp code to interface with the SDL library.

[2004-06-09] bouncing-ball loads a .bmp and bounces the image around the window. Place the .bmp file somewhere in your path (e.g. the Corman Lisp main directory), or manually change the current directory in Lisp.
[2004-06-09] random-rects is a simple example that blits rectangles of random size and color to random positions on the screen.
[2004-06-09] opengl-gears is the famous OpenGL Gears demo by Brian Paul.
[2004-06-09] rotating-cube demonstrates a multicolored rotating cube implemented in OpenGL.

Running the examples

Download the pre-compiled examples.
Extract the zipfile into a new directory, for example
```
My Documents\dev\corman-sdl
```
Run an example.

If you wish to develop using the SDL FFI definitions

Download and install Corman Common Lisp
Download the latest version of the Corman-SDL FFI bindings.
Extract the zipfile containing the Corman-SDL bindings into a new directory, for example:
```
My Documents\dev\corman-sdl
```
The "corman-sdl\" directory should contain three subdirectories:
```
corman-sdl\examples\ 
corman-sdl\Modules\
corman-sdl\source\
```
Copy the files in the "corman-sdl\Modules\" directory into the "Modules\" directory of the Corman Lisp installation, for example: "C:\Program Files\Corman Technologies\Corman Lisp 2.5\Modules"
Move SDL.dll and SDL_mixer into the base Corman Lisp directory, for example "C:\Program Files\Corman Technologies\Corman Lisp 2.5"
Load an example from the directory, "corman-sdl\examples\" into the Corman Lisp IDE.

Version 0.6: [2003-09-03]

Updated the SDL FFI bindings to support SDL version 1.2.6
Created FFI bindings for SDL_mixer. SDL_mixer is a sample multi-channel audio mixer library. These bindings are included in the 0.6 download.
The FFI bindings are now in a package SDL. This means that all SDL functions must be prefixed with SDL: , for example
```
(sdl:SDL_Init sdl:SDL_INIT_VIDEO)
```
Updated the examples to reflect the new SDL package.
BUG: The only callback that is known to be working is SDL_SetEventFilter.

Version 0.5: [2003-06-22]

Have implemented the headers within sdl_syswm.h so it is now possible to receive Operating System specific events such as cut/paste. An added bonus is that the the SDL_SysWMmsg struct returns a handle to the window, allowing 3D fonts to be easily created and rendered to the screen in OpenGL
The functions SDL_LoadBMP, SDL_SaveBMP, SDL_SaveBMP_RW and SDL_LoadWAV_RW are now defined, allowing bitmaps to be loaded into SDL. An example of this is

Version 0.3: [2003-06-08]

A Major update. Around 90% of SDL is now defined.
SDL Semaphores and Mutexes will work with Windows native Corman Threads. I have uploaded an example of the usage here.

Version 0.2: [2003-05-31]

I have uploaded the new FFI definitions for the SDL header files. This means that the patched C to Lisp parser (parse-c-decls.lisp) is no longer required.
Hopefully, all keys are now supported. [I added the capability to parse ENUM's to the Corman 'C to Lisp' Parser (parse-c-decls.lisp)].
All structures are now properly byte-aligned.

Version 0.1: [2003-05-13]

The previous version of SDL.lisp erroneously had a variable specified as type Unit8, instead of Uint8. Thanks to John Pallister & Carlos Ungil for pointing this out.
Each demo can now be built to an executable. Silly me for not following directions.
Updated the Corman 'C to Lisp' Parser (parse-c-decls.lisp) to handle "packed aligned" structs (see Issues). All structures are now properly byte-aligned. This version of SDL.lisp is not currently available for download due to the dependency on the updated parser file.