#186 in Game dev

1,258 downloads per month
Used in bevy_tween

MIT/Apache

86KB
1.5K SLoC

bevy_lookup_curve 📈

Editable lookup curve for Bevy that can be used for many things, for example:

Animation
Gameplay progressiom (control different aspects over time or other variables)
Physics (for example: tweakable feel on a character controller)
Probability control (for item drops etc)
Shaders
... just about anything where you need a formula (x -> y) that you can fine tune, with a GUI instead of diving into math

If you have used AnimationCurve in Unity, this would be an attempt at something similar for Bevy.

Features

LookupCurve type with modifiable knots and tangents. Three types of interpolation: Constant, Linear, and Cubic
LookupCurve implements bevy_math::Curve<f32> to fit into the ecosystem, giving access to resampling and other conveniences.
Asset loader and save functionality
egui-based editor
Integration with bevy-inspector-egui for quick and easy tweaking

See examples for now

Feature	Default	Description
serialize	Yes	Enable serde serialization/deserialization for the LookupCurve
ron	Yes	Enable loading/saving the curve as a ron file
bevy_reflect	Yes	Implement Reflect on most types in the crate
bevy_asset	Yes	Implement AssetLoader for LookupCurve
editor_egui	Yes	Enables the egui-based editor
editor_bevy	Yes	ECS component for convenient spawning of editor windows inside Bevy
inspector-egui	No	Integration with bevy-inspector-egui

This crate can be used without Bevy as well (except for bevy_math which is a core dependency).

Just set default-features = false. And enable serialize, ron, and/or editor_egui if needed.

See the egui_only example. It can also be used as a standalone curve editor.

Contributions are welcome. Feel free to make a PR!

Dual-licensed under either:

~11–54MB
~1M SLoC