Offline stuff

Software clients and games


I began working on Ragnar in 1989, a 3D isometric game for the Sinclar ZX Spectrum home computer. Equipped with 48 kB of RAM (including 6 KB for the 256x192 pixels video memory), this popular 8-bit computer housed a Z80 processor running at 3.5 MHz. Coded in pure machine code (Z80 assembler), I did the 3d engine from scratch, creating a buffered solution to reduce animation flicker. Gameplay consisted of navigating the labyrinth, solving puzzles to pass doors. Project was put on hold when I went into the army around 1991.

I commenced working on Ragnar again in 2004. Using the ZX Snap emulator, I redesigned the graphics and rewrote the code base, all using emulated tools on the Spectrum platform. (As in the first version, the blue border is from a cross-stitched thingie my dear grandma once made). I plan to have Ragnar finished when Im 70 something.

World of SpectrumMore Ragnar

ZX Spectrum coding in general

Having found my stash of old ZX Spectrum tapes, I am slowly building up a dedicated web site for my ZX Spectrum stuff. Recovering gold nuggets faster than Jet Set Willy can collect glasses and bottles, one of the gems I found was my own playable implementation of Sword of Fargoal. Full source code and download options available!

My ZX Spectrum stuff

Unity games (and grown-up stuff)

Unity is a fantastic framework that works really well with C# - and its very much prepared for a host of different target platforms. Although I am very much a beginner here, slow-cooking two different Unity game projects, my particular interest in Unity is to explore how it potentially could be used in scientific contexts. Apart from my two game projects, I am also exploring how Unity could be used to create immersive network visualizations - e.g. as a mean to navigate and explore relational data using AR/VR googles.

XNA games

Using the now deprecated XNA framework for C#, I have developed a bunch of different games, mostly working prototypes but also playable ones. Demesteroids is a classic Asteroids clone where I used real-world radar imaging models for the in-game asteroids. For more peaceful gaming, try the relaxing and equally network-educational CNS XMAS Game.

I also wrote an article series about XNA for Datormagazin, where I guided the reader through the process of producing a simple arcade game. In this case, it was DMZone, where you drive your tank around, avoiding the tanks sent out by the almighty Cute Puppy.

Assorted C# clients

I like C# - which is pretty weird in academia, where most people work in R or Python. But for making stable and easy things that work, it is fantastic.

In the pre-push-era of community, I created a little software that resides in the task manager, checking events on the community. For my PhD dissertation party, I created a spring-embedding visualizer for all my guests. And I have created an assortment of various useful tools, ranging from sprite sheet creators to text parsers and data converters.