sodna: A C repository from rsaarelm

Sodna is a lightweight virtual console library for text mode games.

Current implementation uses SDL 2.0 from http://libsdl.org/ as a backend.

To build the demo application, use premake:

$ premake4 gmake
$ make

Linux users will want to have premake4 and SDL2 installed using their system package manager. Windows versions are included with Sodna.

Files

include/sodna.h: The base Sodna API header. Also what passes for API documentation at the moment. Implementations of Sodna, like the initial SDL2 one, are written against this.
include/sodna_util.h: Header for non-essential utility methods that are implemented on top of the base API.
src/sodna_sdl2.c: SDL2 implementation of the base Sodna API.
src/sodna_default_font.inc: Embedded binary for the default Sodna font. Needed by sodna_sdl2.c.
src/sodna_util.c: Implementation for the non-essential Sodna utilities.
src/stb_image.h, src/stb_image_write.h: STB image library by Sean Barrett, used by sodna_util.c
src_demo/demo.c: Messy example program.

Use tools/bake_font.sh to create your own baked-in font include file from a 16 columns by 16 rows left-to-right bitmap font sheet. Eg.
```
$ ./tools/bake_font.sh my_font.png > my_font.inc
```
The tool requires that you have ImageMagick installed and in your command line path.
See codepage_437.txt for making your own font sheet image.

sodna_util.c can't read font sheet pngs processed with optipng due to limits in stb_image.
Due to bug in SDL2, pressing caps lock when Sodna window is out of focus can make the caps lock state reported by Sodna inconsistent with the actual keyboard state.