@dev.timjen.net
Contributing to @bevyengine.org and other open-source projects.
An example of mirrors in the Bevy game engine. A low-poly fox looks at a reflection of itself in a mirror.
I dusted off an old patch and landed the infrastructure for portals and mirrors in Bevy for 0.18: github.com/bevyengine/bevy/pull/13797
This builds the Lengyel oblique clip plane technique into the engine, which is the fastest way to do the clipping necessary for mirrors to work.
The Bevy Metrics dashboard is now live at metrics.bevy.org!
For each Bevy commit this tracks compile times, binary size, and runs stress tests on standardized, real gaming hardware. These are all graphed to identify historical trends and track down commits that improve or regress the state of Bevy!
Avian finally has built-in move and slide, the movement and collision algorithm at the heart of kinematic character controllers! #bevy #gamedev #physics #kcc
PR: github.com/avianphysics...
I'm late, but I finally finished by blog post!
It goes over the web features of the #bevy CLI prototype, how we got there and what we still plan to do:
dev.timjen.net/blog/bevy-fi...
I just released version 0.4 of Avian, an ECS-driven physics engine for @bevy.org.
This is the biggest release yet, featuring 3x performance(!), overhauled forces and joints, voxel colliders, Bevy 0.17 support, and much more.
As always, release notes can be found here:
joonaa.dev/blog/09/avia...
Bevy 0.17 is out now! It features Raytracing, Improved Observers / Events, UI Widgets, Rust Hotpatching, Light Textures, DLSS, Tilemap Chunks, Web Assets, Reflect Auto-Registration, UI Gradients, Raymarched Atmosphere, Virtual Geometry BVH Culling, and more!
bevy.org/news/bevy-0-17
Today, I finally merged simulation islands for Avian!
Islands are graph-like structures where bodies are connected via contacts or joints. They are used for sleeping and waking, which is crucial for reducing CPU overhead for large scenes with many dynamic bodies.
github.com/Jondolf/avia...
New blog post: "Realtime Raytracing in Bevy 0.17 (Solari)"
jms55.github.io/posts/2025-0...
Iβm Not a Robot, a game about solving CAPTCHAs, is out now!
good luck :)
> neal.fun/not-a-robot/
#GodotEngine 4.5 has finally arrived! π
With this new release, we made meticulous efforts in order to amplify what is possible to do with our engine, guided by our goal of making gaming and game development for everyone!
godotengine.org/releases/4.5/
Some Bevy Birthday thoughts
www.christopherbiscardi.com/bevy-5th-bir...
We received reports of a phishing campaign targeting cratesβ.io users. Do not click on links asking to authenticate to protect your account. More information: blog.rust-lang.org/2025/09/12/c...
12.09.2025 14:22 β π 113 π 58 π¬ 0 π 2I added a replay system and camera controls to my game and I'm having too much fun now #bevyengine
05.09.2025 17:13 β π 78 π 11 π¬ 4 π 0New blog post: "Bevy's Fifth Birthday - Progress and Production Readiness"
jms55.github.io/posts/2025-0...
We're excited to announce our new Bevy Merch store: merch.bevy.org. You can now show your support for Bevy in style!
25.08.2025 22:09 β π 51 π 12 π¬ 2 π 1It would certainly be interesting if the editor was just one crate in your game's workspace. Initially with default plugins, but then you could expand it with plugins depending on your use cases.
Then, cargo could be our plugin manager for the editor :)
hot take: talking about "the" bevy editor is a trap... we should focus on building composable, modular tools that deliver incremental value, just like everything else we do in @bevy.org www.charlotte.fyi/posts/toward...
26.08.2025 01:43 β π 63 π 10 π¬ 6 π 2
My latest coding adventure is now up on YT -- some experiments with ray-tracing glass and water, and the cool caustics they can cause
youtu.be/wA1KVZ1eOuA?...
Finally, remember that this feature doesn't make your app multi-threaded by itself!
It just simplifies the process of building and running already multi-threaded apps.
Try out bevy_seedling with firewheel_web_audio to get started with multi-threading, which uses it for audio. No more stutters!
This is all not very accessible, so the CLI prototype automates it for you!
It also adds the rustflags gracefully without overwriting existing rustflags in the project (which would happen if you specified them manually).
Hopefully this will accelerate development of Wasm multi-threading in Bevy.
First, you need to manually enable the Wasm multi-threading features, then also rebuild std with those features (which requires nightly).
But when you run the app, it still wouldn't work!
Turns out, security is important. So browsers require you to enable cross-origin isolation headers.
Currently, Bevy runs everything on a single thread when you are targeting the web.
This leaves a lot of performance on the table and can lead to issues like stuttering audio.
Some third-party plugins are adding support for running some parts in different threads, but it makes them quite hard to run!
We just added experimental support to the #bevy CLI prototype to build and run multi threaded web apps!
github.com/TheBevyFlock...
wrote about some of the work i've done in the past year and what i'm hoping to accomplish next year in bevy! β¨
www.charlotte.fyi/posts/bevys-...
Today is Bevy's fifth birthday! As always, I've used this as a chance to reflect on the past year and outline my hopes and dreams for the next year of #bevy:
bevy.org/news/bevys-f...
2. github.com/TheBevyFlock...
This allows you to specify additional response headers for the local web server used for `bevy run web`.
It was already possible to pass them directly in the command via `--headers`, but with this PR you can also persist them in the `Cargo.toml` via our config system.
We initially only accounted for the directory to not be a Cargo workspace, but there can be multiple other failure cases that turn out to come up more in practice.
We now ensure that the user can see the original error message by `cargo metadata` to diagnose the issue.
We landed two improvements for the #bevy CLI alpha today.
1. github.com/TheBevyFlock...
This improves the error message when `cargo metadata` fails. We run this at the start of _every_ CLI command, to understand the structure of the workspace.
So a good UX is crucial here!
I'm so happy to share that the stairs update is liiiiiive. This is by far our biggest update that we've been cooking since *checks calendar* omg, since March x_x Huge thanks to everyone who helped us test it while in beta <3
Now lemme walk you through some of the new shinies π§΅
The image of the post above, showing pure black.
The image is all black for me, is that intended? :D
I guess rendering a black square could also improve rendering times a lot though, we should consider it!
