| I gave a talk about this recently![0] But, to answer your question directly: - Rust performance is comparable to C/C++, but Bevy has had much less time to get optimized than C/C++. Our ECS is fast, but slower than flecs, and our rendering performance is about Unity level IIRC. - Safety / correctness is a huge benefit. Memory safety is obviously nice for reducing horrible segfaults, but ultimately I end up really loving enums, traits and the ease of unit testing to make refactoring games (and the libraries they rely on). - Talking to experienced game devs, velocity is quite good! Once you're off the ground, a ton of your time comes from a) refactoring b) bug fixing c) adding bog-standard but tedious functionality like localization. I've talked about the first two, but Rust's first class packaging ecosystem (and Bevy's modularity) means that you can actually share work for that, rather than rewriting it at every company like you see in a lot of other game dev. Gameplay features are wildly easy to write, but GUI creation is still miserably tedious with a fragmented ecosystem. On development velocity, I will note that Linux's compilation times for Rust are meaningfully better than Windows, although M1 Macs are compelling too. The lack of visual editor tooling definitely slows things down too, even though good ecosystem options for that are emerging. [0]: https://elk.zone/mastodon.gamedev.place/@alice_i_cecile/1113... |