OpenIGSB

My attempt to reverse engineer the game engine for I've Got Some Balls by Sebastian Aaltonen and reimplement it for modern systems.

Current Status

I am still going through disassembly to find out the level file format, once this is done, I will start working on the de-facto implementation.

Docs on the file formats, etc. IGSB uses will be uploaded here as I learn more about how they work.

TODO List

• [ ] Document level format and make a viewer tool
  • [ ] Potentially make a level editor?
• [ ] Get title screen showing
• [ ] Reverse engineer the collission response and marble handling code
• [ ] Get the rest of the game working as close to original as possible.

Want to do

• [ ] Add optional real-time shadow mapping
• [ ] Add optional elongated marble bug fix
• [ ] Add optional rigid body physics system
• [ ] Increase allowed geometry density of maps
• [ ] Allow maps to use PBR (via extended format or glTF)