59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
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# libDGL
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libDGL is a "retro coding" C library aimed at MS-DOS [VGA Mode 13h](https://en.wikipedia.org/wiki/Mode_13h) game development. It is developed with DJGPP with 486 DX2 systems as a baseline target for performance.
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### Why?
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Because it's fun.
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If you were looking for something for "retro" MS-DOS game development that is fully featured, really performant and bug-tested that's ready right now, have a look at Allegro 3.x or possibly 4.x depending on what hardware you're targetting.
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### Status
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This library is currently under early development and is lacking many things and probably chock-full of bugs.
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**Done / Mostly Done**
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* Primitive drawing support
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* Text rendering
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* Blitting
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* Graphics clipping
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* Keyboard input
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* Mouse input
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* PCX loading/saving
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* Math library (general helpers, 2D vector, 3x3 matrix)
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* Basic error handling / results
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**TODO**
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* Scaled/rotated blitting support
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* Blending
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* "Mode 7" like support
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* Custom font loading (BIOS-like format?)
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* Joystick / Gravis GamePad support
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* PC speaker sounds
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* Sound Blaster compatible sound/music
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* Gravis Ultrasound compatible sound/music
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* Fixed point math
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* Sine/cosine lookup table optimizations
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* BMP, LBM, GIF image loading (and saving?)
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### DJGPP Toolchain
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Along the same theme as this library itself, I am using an older version of DJGPP from the late 90's. I have not tested with any other versions of the DJGPP toolchain other than:
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```
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15 Jan 1998 bnu281b.zip
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24 Oct 1997 csdpmi4b.zip
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31 Oct 1996 djdev201.zip
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18 Jan 1997 faq210b.zip
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6 Jun 1998 gcc281b.zip
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18 Oct 1996 gdb416b.zip
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6 Jun 1998 gpp281b.zip
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1 Mar 1998 mak3761b.zip
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30 Sep 1997 rhide14b.zip
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```
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This is a pretty arbitrary selection that was based on a cut-off of about 1998 (which was when I first came across DJGPP when I was younger).
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