Blazingly fast path based retained layout engine for Bevy entities, built around vanilla Bevy ECS. It gives you the ability to make your own custom UI using regular ECS like every other part of your app.

• Resizable: Lunex is designed to support ALL window sizes out of the box without deforming. The built in layout types react nicely and intuitively to aspect ratio changes.

• Retained mode: Unlike immediate mode GUI systems, Bevy_Lunex is a retained layout engine. This means the layout is calculated and stored, reducing the need for constant recalculations and offering potential performance benefits, especially for static or infrequently updated UIs.

• ECS friendly: Since it's built with ECS, you can extend or customize the behavior of your UI by simply adding or modifying components. The interactivity is done by regular systems and events.

• 2D + 3D UI: One of the features of Bevy_Lunex is its support for both 2D and 3D UI elements, leveraging Bevy's Transform component. This opens up a wide range of possibilities for developers looking to integrate UI elements seamlessly into both flat and spatial environments. Diegetic UI is no problem.

• Cursor styling: Lunex offers a cursor API so you can style your cursor however you want! For interactions, we intagrate with bevy_mod_picking, which is getting upstreamed into Bevy. Lunex also provides custom picking backend, you just need add "picking" feature.

^ A recreation of Cyberpunk UI in Bevy. (Source code here).

Documentation

For detailed read refer to Bevy Lunex book.

For real-life example check out Bevypunk source code.

Versions

Bevy	Bevy Lunex
0.13.2	0.1.0 - latest
0.12.1	0.0.10 - 0.0.11
0.12.0	0.0.7 - 0.0.9
0.11.2	0.0.1 - 0.0.6

Any version below 0.0.X is EXPERIMENTAL and is not intended for practical use

Contributing

Any contribution submitted by you will be dual licensed as mentioned below, without any additional terms or conditions. If you have the need to discuss this, please contact me.

Licensing

Released under both APACHE and MIT licenses. Pick one that suits you the most!