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https://github.com/rbaltrusch/rbaltrusch

Software engineer, enjoying building stuff in Python.
https://github.com/rbaltrusch/rbaltrusch

batch batest bullet-sudoku game-development gui matlab music-generation python simulink

Last synced: 2 months ago
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Software engineer, enjoying building stuff in Python.

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README 

          
# Hello World :ok_hand:



I am Richard Baltrusch, a German software engineer that likes to build all kinds of stuff, with a faible for Python.



You can contact me using the following links:



- Email: [richard@baltrusch.net](mailto:richard@baltrusch.net?subject=[Github])

- [LinkedIn](https://www.linkedin.com/in/richard-baltrusch-aa809a131/)

- [YouTube](https://www.youtube.com/channel/UCBB1v2nSWPvX_9Km-AMGkGQ)



## Languages



- Professionally mostly Python, Java and Javascript.

- In the past, I have professionally worked with MATLAB/Simulink on numerical computing.

- Currently:

  - Developing a full stack web application using Java (Spring Boot) and Javascript.

  - Refining a lazily-computed iterator-chaining library for Lua: [stream.lua](https://github.com/rbaltrusch/stream.lua). 

  - Tinkering with Lua and Haskell.

- Interested in Rust, Go and Scala.



## Interests



- Games: I wrote a game engine and used it to develop a full game release, [Bullet Sudoku](https://github.com/rbaltrusch#bullet-sudoku), a 2D top-down platformer.

- Languages: I am interested in constructed languages and [custom programming languages](https://github.com/rbaltrusch/natscript).

- Music: I compose and [procedurally generate music](https://github.com/rbaltrusch/music_generation). The music generated by my neural network [Bach generator](https://github.com/rbaltrusch/bach_generator) is at least "interesting" :)



## Games



I released a number of games, including a full release, and [pygaja](https://github.com/rbaltrusch/pygaja), a small open-source Python game engine for game jams.



### Bullet Sudoku



Bullet Sudoku is a small game I wrote in summer 2020 using my custom made game engine written in Python. A free demo of the game is available on [itch.io](https://richardbaltrusch.itch.io/bullet-sudoku). It is currently sitting at almost 100 downloads!



![Short GIF of Bullet Sudoku gameplay](/media/bullet_sudoku2.gif)



The source code is currently not open-source, but I plan on releasing a condensed open-source version of the game engine in the near future.



### Game jam submissions



Since 2023 I published multiple game jam submissions, with open source code, to try out new technology and new ideas:



[**Unicast Network Sim**](https://github.com/rbaltrusch/unicast_network_sim): an action-puzzler game where you deliver network packets (Python). Placed 16th out of 500 for innovation due to the creative input system.



Unicast network simulator gameplay



[**Myrkur**](https://github.com/rbaltrusch/myrkur): a dungeon exploration game written with Love2D in Lua.



Myrkur gameplay



[**Fungal Whimsy**](https://github.com/rbaltrusch/fungal_whimsy): a 2D precision platformer set in a dense mushroom forest.



Fungal Whimsy gameplay



[**Uncaved**](https://github.com/rbaltrusch/uncaved-gmtk): a reverse cave-exploring game where you control a cave full of traps, written in Java with libGDX.



Uncaved gameplay



#### Closed source game jam submissions



I have also published some game jam entries with closed source code:



[**City of London 1923**](https://richardbaltrusch.itch.io/city-of-london-1923): A frantic landlord game in which you continually have to fix problems in rental units.



Fungal Whimsy gameplay



[**Desert Ranger**](https://richardbaltrusch.itch.io/desert-ranger): A run-and-gun shootem-up game set in a blazing hot desert. Developed in a team of 4.



Fungal Whimsy gameplay



### Pygame examples



I have a number of small / medium size pygame examples that illustrate a certain technique or explore game concepts, such as particle effects, lighting, events and networking, in more detail. Source code is available [here](https://github.com/rbaltrusch/pygame_examples).



![Gif of the particle effects](https://github.com/rbaltrusch/pygame_examples/blob/master/media/particle_effects.gif?raw=true "Gif of the particle effects")

![Gif of the lighting system](https://github.com/rbaltrusch/pygame_examples/blob/master/media/lighting_system.gif?raw=true "Gif of the lighting system")

![Gif of the hexagonal tile map](https://github.com/rbaltrusch/pygame_examples/blob/master/media/hexagons.gif?raw=true "Gif of the hexagonal tile map")

![Gif of a red light source](https://github.com/rbaltrusch/pygame_examples/blob/master/media/red_light.gif?raw=true "Gif of a red light source")

![Gif of an evolution simulation](media/evolution_sim.gif?raw=true "Gif of an evolution simulation")

![Gif of the cloth simulation](media/cloth_sim2.gif?raw=true "Gif of the cloth simulation")



### Chess engine(s)



I have developed a semi-complete [chess-engine in Python](https://github.com/rbaltrusch/chess_ng) from scratch and done a fair amount of optimization, until realizing a fully optimized chess engine likely would require more speed than Python can offer, so I started work on an [implementation in C](https://github.com/rbaltrusch/thcc_engine). The C-code looks less beautiful, but already runs around 70 times faster :)



Here is an AI playing chess against itself using a minimax algorithm (depth 4) using the Python version:



![Chess artificial intelligence playing a game](https://github.com/rbaltrusch/chess_ng/blob/master/media/chess_ai.gif?raw=true "Chess artificial intelligence playing a game")



## Music



### Music analysis



Here's my [music analysis tool](https://github.com/rbaltrusch/music_mood_analysis), which I started building in 2018 and recently built a fancy user interface for:



![Screenshot of the analysis GUI](https://github.com/rbaltrusch/music_mood_analysis/blob/master/music_mood_analysis/gui/media/screenshot2.png?raw=true "Screenshot of the analysis GUI")



### Music generators



Over the years, I have worked on multiple procedural music generators, two of which are open-sourced on Github and available on pypi:

- My [Bach generator](https://github.com/rbaltrusch/bach_generator) generates a transformed version of music input (via midi files) using a machine-learning algorithm optimizing for correlation of the output with the input. This ensures the produced musical transformations are internally consistent.

- [Continuo](https://github.com/rbaltrusch/continuo) is a pypi package that procedurally generates music based on a provided set of input parameters.



## AI and Machine Learning



I have worked on a few AI and machine learning projects, including:

- [A chess engine](https://github.com/rbaltrusch/chess_ng) including a minimax AI.

- [Bach generator](https://github.com/rbaltrusch/bach_generator), a data-driven music generator that uses a neural network to generate Bach-like music.

- [Game ML](https://github.com/rbaltrusch/gameML), a repository of various machine learning algorithms, such as reinforcement learning, applied to simple games.



## Tools



### Batest



[Batest](https://github.com/rbaltrusch/batest) is a lightweight unit testing framework for Windows batchfile scripts. As no testing framework existed when I was learning [Batch](https://github.com/rbaltrusch/batch), I wrote my own :+1:.



It generates simple HTML test reports like this:



![Screenshots of the test reports](https://github.com/rbaltrusch/batest/blob/master/batest/media/screenshot.png?raw=true)



## Meta-programming



### Natscript



[Natscript](https://github.com/rbaltrusch/natscript) is an interpreted programming language with a natural syntax resembling English:



```powershell

define function main as {

    set squares to []

    for each number in range from 0 to 5 not equal to 3 {

        multiply it by itself, then append it to squares

    }

    return squares

}



# This will output [0, 1, 4, 16] to the console

print result of call main

```



Although a bit slow, due to its current main implementation being in Python, it is a fully functional language that support procedural and functional programming. Performance issues may be addressed in the future with the [C++ version](https://github.com/rbaltrusch/cpp-natscript) (currently still WIP), or by implementing a LLVM JIT-compiler for the language.



### Interpreters



I have written a collection of simple interpreters in various languages (including Python, Java and C), available [here](https://github.com/rbaltrusch/simple_interpreters).



### Object oriented batch



For people unfortunate enough to come to Batch with an object oriented background, I wrote an [object oriented framework for Batch](https://github.com/rbaltrusch/objectbatch/wiki), including classes and instances, methods and attributes, inheritance, encapsulation, polymorphism and object composition.



As can be seen in the code examples below, the batch OOP syntax is surprisingly clean (for batch):



Simple use of a class instance:

```batch

::instantiate new object obj of type MyClass

call new MyClass obj construct



::calling method myMethod of instance obj

call # obj myMethod



::reading obj attribute myAttr

echo !%obj%.myAttr!



::writing obj attribute myAttr

set %obj%.myAttr=1

```



Simple class definition:

```batch

::boilerplate

call class %*

%class%



::this is the constructor, adding one custom attribute attr

:public-construct

    call super %*

    set %self%.attr=0

exit /b

```



It's probably not very useful, but at least it was fun to make :100::100:



## Apps



- I wrote a small [shop application](https://github.com/rbaltrusch/desktop_shop) to solidify my understanding of SQL and handling confidential data securely in databases.

- I also made a small [chat application](https://github.com/rbaltrusch/pychatter) to get a good grasp of networking using websockets. The application can be run on a local network.



![Gif of the application GUI](https://github.com/rbaltrusch/pychatter/blob/master/pychatter/gui/media/gif1.gif?raw=true "Gif of the application GUI")



## Stats



[![rbaltrusch's GitHub stats](https://github-readme-stats.vercel.app/api?username=rbaltrusch&theme=holi&show_icons=true)](https://github.com/anuraghazra/github-readme-stats)