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.
Elk in prj04 is original from Cesanta Software. It was ported to OpenWatcom and hex number literals were added.
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
+- prj04/ example code using the [Elk](https://github.com/cesanta/elk) scripting engine
+- 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.
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