bevy VS specs

> I hear a few problems with the audio emulation, (mostly clicks that shouldn't be there)

Almost anything WASM+Audio seems to do that in browsers today, unless you're really really careful about what you're doing and leverage multiple threads. I think the issue is mostly around single-thread contexts, where it has to switch between playing audio and other things.

I hit the very same issue myself with Bevy not too long time ago, and tracking this issue which has some further links if you wanna go down a rabbit-hole: https://github.com/bevyengine/bevy/issues/4078

bevy_math also uses glam, re-exported in the prelude: https://github.com/bevyengine/bevy/blob/cc69fdd0c63ea79fda4f...

Since my project is built with Bevy, understanding its core concepts was very important. Bevy's entity-component-system (ECS) architecture makes game development modular and efficient, allowing for highly decoupled systems.

Not a very impressive example yet, it's mainly there for our CI system[1] to ensure that no one accidentally breaks the meshlet feature, but there is an example you can run to get a basic idea of the feature.

You can download Bevy https://github.com/bevyengine/bevy, and run `cargo run --release --examples meshlet --features meshlet`. After it compiles you'll get prompted to download a bunny.meshlet_mesh file. Click the link to download and create and place it in the appropriate folder, and then run the example again.

There's also this video from the Bevy 0.14 release notes demonstrating it, but performance/quality has improved a _lot_ since then: https://bevyengine.org/news/bevy-0-14/many_bunnies.mp4

[1]: https://thebevyflock.github.io/bevy-example-runner

Here, give it a shot - I'm at work so I can't try again right now, but last I did was use claude+context, chatGPT 4o with just chatting, Copilot in Neovim, and Aider w/ claude + uploading all the files as context.

I even went so far as to grab relevant examples from https://github.com/bevyengine/bevy/tree/latest/examples#exam... , adding relevant ones as I saw fit.

It took a long time to get anything that would compile, way longer than just reading + doing, and it was eventually wrong anyway. This is a recurring issue with Rust, and I'd love a workaround since I spend 60+h/week writing it. Probably a skill issue.

https://gist.github.com/jodavaho/8fb042fab33c1aaa95cd67144da...

I was looking through the source code for Bevy's Screen-Space-Ambient-Occlusion (SSAO) implementation and noticed they are using blue noise as well:

https://github.com/bevyengine/bevy/blob/56d559102858d4ce8a5b...

That link takes you to this shadertoy:

https://www.shadertoy.com/view/3tB3z3

Ah yeah pipeline compilation is a very non-trivial problem[1]. Unreal is also struggling with this a lot. I hear you that it's an issue.

The Bevy issue you want to follow is https://github.com/bevyengine/bevy/issues/10871.

[1]: https://therealmjp.github.io/posts/shader-permutations-part1 + https://therealmjp.github.io/posts/shader-permutations-part2

The question arises from seeing a plethora of projects using ECS: hecs , Bevy , specs, legion

Instead, I'm using now the specs Library. It's a pure ECS library and much less powerful, without any visualization capabilities, but its works for me :)

writing an ECS is defined a challenging project, no matter the language or if you're a beginner. although it is entirely possible to write one in Rust, check out specs and bevy_ecs for examples.

specs

The official 3d rendering client uses a custom engine called Voxygen. They use Specs for logic.

Rust has a delightful ECS library, specs, that I absolutely love. It has safe multi-threaded execution built right in, which is fantastic for the pretty parallelizable work I was doing. Concurrency in C++ is nasty business on the best of days, and I've run into so many nasty bugs with the custom system I've had to build out to fit the web's weird threading model.

Man, this Specs [0] library is so strange to me, coming from a Unity background. Is there some sort of comparison as to why one way is better than the other?

[0] https://specs.amethyst.rs/

Hi everyone - I just picked up one of my long-unfinished side project built with Rust and would like to show it to you here. It's a clone of the famous(?) Winterbells game. It's written entirely in Rust and uses OpenGL and an entity-component-system architecture ([the `specs` crate](https://crates.io/crates/specs)) (still learning), no game engine.

Wait did the person at your company write specs or something else because they weren't pleased with it? I don't know much about amethyst and vaguely know about entity component systems but I watched a talk on someone making a game with amethyst and was pretty impressed -- it looked thoroughly approachable and I do not doubt the performance is there (since the whole reason you do ECS is performance).