rectpack2D

GitHub: https://github.com/TeamHypersomnia/Hypersomnia I wrote a multiplayer shooter in C++ without a game engine (~170k LoC). The entire simulation is fully deterministic across Windows, Linux, MacOS and the Web built via Emscripten, recently even aarch64. Compared to e.g. state snapshots, this is arguably the hardest networking strategy that's mainly used by RTS games to synchronize hundreds of units without bloating traffic. The goal is to be the one free and open-source Esports game. Hypersomnia was recently played on a massive LAN tournament: https://store.steampowered.com/news/app/2660970/view/4186736... - The atlas packer I wrote for the game was reused in Assassin's Creed, Skydio and received 2 scientific references: https://github.com/TeamHypersomnia/rectpack2D - There were significant challenges in making Box2D suitable for this

GitHub: https://github.com/TeamHypersomnia/Hypersomnia - The netcode relies on full simulation determinism - this includes Box2D physics. I'm using standard floating-point calculations and rely on IEEE754 compliance. I also use STREFLOP for portable math function implementations. This is commonly done for RTS games with a lot of synchronized units, however this technique is rarely if ever seen in games with complex physics, esp. shooters. - The atlas packer I wrote for the game was reused in Assassin's Creed, Skydio and received 2 scientific references: https://github.com/TeamHypersomnia/rectpack2D - You can play ranked matches in the browser after signing in with Discord. Your MMR is based on the OpenSkill library. - Browser clients and native clients (Windows, Linux, MacOS) can play on the same servers thanks to libdatachannel and datac

Same here. I still find it a bit misleading too. The game didn’t make it to AC:Valhalla, a texture-packing library that was made during its creation did[1] (not wanting to downplay that achievement, it’s worthy of a post in its own right, IMO). It’s also a bit of a stretch to claim it was the source of the ECS system used in Unity. I was using a game engine which used ECS prior to 2010. In the game engine world it seems to originate with Operation Flashpoint[2] (post from 2007). [1] https://github.com/TeamHypersomnia/rectpack2D [2] https://t-machine.org/index.php/2007/09/03/entity-systems-ar...