Libsixteen provides helper functions for VGA mode 0x13 graphics, BMP loading/saving, mouse pointers, OPL2 music, raw disk access and IPX networking. It was written just for fun using OpenWatcom.
VGA code is based on the 256-Color VGA Programming in C tutorial by David Brackeen
IPX code was developed with the help of the Cylindrix source.
OPL2 code was ported from ArduinoOPL2.
Be warned: the raw disk access code ist mostly untested, use at you own risk!
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+- fonts/ example fonts and a Python script to convert TTF to BMP.
+- lib/ library source files
+- prj01/ showcase for all the implemented functions
+- prj02/ multi player drawing canvas using IPX
+- prj03/ lib16 port of demotune.cpp
+- LICENSE license description for all parts provided
I have included the OpenWatcom project files as a reference. You need to change these if you want to compile the examples yourself because OpenWatcom includes absolute paths in these files.
if defined the SIN/ACOS table for drawing circles is created dynamically when vga_init() is called. If undefined a pre-compiled table is used. Using the pre-compiled table can reduce EXE size when sin()/acos() is not used elsewhere.
If defined the errno functionality in error.h/error.c clone is disabled. This reduces EXE size.
font_converter.py can be used to create BMP fonts for bitmap_render_char() and bitmap_render_string().
It needs at least Python 3.6 and PyGame.
These font are kindly included with permission of DamienG https://damieng.com/typography/zx-origins/ Make sure to check his site for more awesome fonts.
You can find me on Mastodon if you want...