Tnua ("motion" in Hebrew) is a floating character controller, which means that instead of constantly touching the ground the character floats above it, which makes many aspects of the motion control simpler.

Tnua can use Rapier or XPBD, and supports both the 2D and 3D versions of both with integration crates:

• For Rapier 2D, add the bevy-tnua-rapier2d crate.
• For Rapier 3D, add the bevy-tnua-rapier3d crate.
• For XPBD 2D, add the bevy-tnua-xpbd2d crate.
• For XPBD 3D, add the bevy-tnua-xpbd3d crate.
• Third party integration crates. Such crates should depend on bevy-tnua-physics-integration-layer and not the main bevy-tnua crate.

• Supports both 2D and 3D versions of Rapier
• Running
• Jumping
• Crouching
• Variable height jumping
• Coyote time
• Jump buffer
• Running up/down slopes/stairs
• Tilt correction
• Moving platforms
• Rotating platforms
• Animation helpers (not the animation itself, but Tnua has facilities that help deciding which animation to play)
• Jump/fall through platforms
• Air actions

• Basic platformer in:
  • Rapier 2D: https://idanarye.github.io/bevy-tnua/demos/platformer_rapier2d
  • Rapier 3D: https://idanarye.github.io/bevy-tnua/demos/platformer_rapier3d
  • XPBD 2D: https://idanarye.github.io/bevy-tnua/demos/platformer_xpbd2d
  • XPBD 3D: https://idanarye.github.io/bevy-tnua/demos/platformer_xpbd3d

Tnua is broken into different crates that update separately, so this is broken into multiple tables. The version of bevy-tnua-physics-integration-layer must be the same for both the main bevy-tnua crate and the integration crates.

The following were used for coding the math and physics of Tnua:

• "Floating capsule" and running mechanics:
  • https://youtu.be/qdskE8PJy6Q
• Jumping mechanics:
  • https://youtu.be/hG9SzQxaCm8
  • https://youtu.be/eeLPL3Y9jjA

• bevy_mod_wanderlust - the original inspiration for this mod, and where I got the floating capsule video from. I ended up creating my own plugin because bevy_mod_wanderlust does not support 2D.
• Rapier itself has a character controller. It's not a floating character controller, but it's integrated with the physics engine itself and uses that privilege to work out some of the problems the floating model is used to address.

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.