Module tween 

Tween / animation system.

Provides typed interpolation between values, 30+ easing functions, multi-track keyframe timelines, and composable animation sequences. Every interpolation can be driven by a MathFunction instead of a simple t ∈ [0,1].

Quick start

use proof_engine::tween::{Tween, Easing};
use glam::Vec3;

let tween = Tween::new(Vec3::ZERO, Vec3::ONE, 2.0, Easing::EaseInOutCubic);
let pos = tween.sample(1.0); // halfway through → roughly Vec3(0.5, 0.5, 0.5)

Re-exports

pub use easing::Easing;

pub use sequence::TweenSequence;

pub use sequence::SequenceBuilder;

pub use keyframe::KeyframeTrack;

pub use keyframe::Keyframe;

Modules

easing

40+ easing functions following Robert Penner’s equations.

game_tweens

Game-specific tween presets — ready-to-call functions that wire the tween engine to specific game events: menu navigation, combat, screen transitions, stat changes, level ups, death, victory, and more.

keyframe

Keyframe tracks — time-stamped values with interpolated playback.

sequence

Tween sequences — chains and parallel groups of tweens.

tween_manager

TweenManager — central hub for managing active tweens across the entire game.

Structs

AnimationGroup

Runs multiple f32 tweens in parallel, identified by string key.

Tween

A single interpolation from from to to over duration seconds.

TweenState

A running tween with its own clock.

Tweens

Convenience methods for common tween patterns.

Traits

Lerp

Values that can be linearly interpolated.