This repo contains my silly projects from the time when I was attending the high school (Gymnázium, Vídeňská 47) where I finished my Upper Secondary education. I am keeping these here out of pure nostalgia (Turbo/Borland Pascal, beginning programming experience and for other memories during these life changing years...).
Most of the code I managed to salvage is pure garbage :) I am data junkie so I don't want to delete anything - but in this repo is only stuff which I cherish for some reason.
I may rewrite/refactor/fix some of it in the future and port it so I can build it with Free Pascal. As of now though the status of the code is as it was during my school years.
So far only the projects below are worthy of keeping, more can be added once I find time to go through the code:
- Starsdat (third year project - "database" application)
- SDKgen (graduation project - Sudoku generator/solver)
DISCLAIMER: Content of this repo is only for my own amusement - the code is horrible and probably buggy (I was really a programming novice then). Also variable names, function names and comments are mix of Czech and English. You can play with it, but I do not warrant or guarantee anything...
Install dosbox (preffered) or at least dosemu and then you can use the prepared shell wrapper:
% git clone https://github.com/ospalax/gympl.git% cd gympl% ./rundos.sh -h
My student programs ran much smoother and faster in the school setup (MS Windows/DOS environment). Many of those projects which I have written are quite unusable in any dos emulator (text based "graphics"). Only the presented here somewhat behave well (using 2D drawing library with EGA/VGA support) - but still you should not try to emulate it on any old hardware.
From manpages of dosbox:
At present, dosbox run on a 1.7 Gigahertz PC is roughly the equivalent of a 25MHz 386 PC.
Also for reference there is a speed comparison table in the dosbox wiki: emulated CPU equivalency
This is my biggest school project - I wrote it during the third year when the Sudoku was all the rage. I actually did not like to solve the puzzles (it was boring and mechanical) but I saw it as a perfect problem to be solved by a computer. I found many tricks to speed up the solver (deterministic elimination methods and my backtrack algorithm) - it was finished in my third year even before my final graduation year. SDKgen was much more quicker then any competition I tried (opensource and freeware) and also it always delivers a puzzle with exactly one solution - which was not true for the other programs I tested... The code in dosudoku is the original codebase (year 2007) before I hacked in to it the save/load feature which is sadly broken as I found out now :)
For many reasons I used it as my graduation project - the teacher just demanded to add a file support - so I did that and graduated. Actually that extra added file feature is the only buggy thing in this application (I just injected it without much testing) - it is very much broken, so don't store/restore puzzle until I fix it.
Currently it is exactly the same as it was handed to my teacher - I made only dosbox.conf, changed email to my current one and relabeled the buggy function in menu to EXPERIMENTAL !.
Make sure that dosbox/dosemu is installed:
% ./rundos.sh sdkgen
This was the mandatory third year project - making some database application. Database is a very fancy word for this silly program doing basic operation on a binary file... I was, if I remember well, the only one implementing the interface in the real graphic mode of Turbo/Borland Pascal - the rest of the class was just making yet another text application. And only thanks to that choice I can share it here now because any text based version (simulating UI) would not run well in the emulator.
Make sure that dosbox/dosemu is installed:
% ./rundos.sh starsdat
