Rephidock.AtomicAnimations

Basic callback-based user-controlled animations and coroutines written in vanilla C#.

Quick summary

The package provides:

• Animation 'atoms', which mutate float values via addition or overwriting using callbacks.
• AnimationRunner and AnimationQueue to run given animations.
• Waves for animations that can be interpreted as moving waves (curves).
• Coroutines – animations based on IEnumerable<T>, allowing for state and logic.

This package does not create additional clocks or threads to be transparent about control flow. Use the Update(TimeSpan deltaTime) to provide time flow to animations, runners and queues.

Additionally queues and coroutines account for excess time since each atom finishes for better accuracy when chaining animations together.

Contents

The package provides the following animations out of the box:

Animation	Summary
Shift1D, 2D, 3D, 4D	Changes 1 to 4 values by adding differences between updates
Move1D, 2D, 3D, 4D	Changes 1 to 4 values by setting values directly
.Waves.WaveEase	Calls an update delegate with a moving Wave (curve)
.Coroutines.CoroutineAnimation	Structures others animations, timing, state and logic

To control the easing of values use the static methods in the Easing class. All easing functions are normalized. EasingCurve delegate is included.

Use a queue or a runner to execute multiple animations. Animations can be added to both during their runtime (fire-and-forget).

Runner	Summary
AnimationRunner	Runs animations in parallel. Stats animations the moment they are added
AnimationQueue	Runs animations in series. Supports Lazy<Animation>

For creating animations from scratch you can use the following classes in the .Base namespace:

Abstract Class	Summary
Animation	Base class for all animations
TimedAnimation	Animation with a known Duration
Ease	TimedAnimation with defined easing and progress value

.Waves namespace

The .Waves namespaces allows for animations that can be interpreted as a moving wave.

Use the WaveBuilder to scale and join multiple EasingCurves together, forming a more complex Wave. The waves do not have to start and end at the same value and extend infinitely out of bounds as flat lines.

The WaveEase.CreateRunthrough will create an animation atom that moves a given wave through a span of known width calling a delegate with a ShiftedWave each update.

.Coroutines namespace

The CoroutineAnimation allows for building more complex animations. It is based on IEnumerable<CoroutineYield>, which can hold state and logic if made using a custom iterator/generator.

A single CoroutineYield holds either

• an animation that is to play the moment it is returned or
• a separate delay instruction

The following delays are possible:

• (static) CoroutineYield.WaitPrevious: Waiting for the previous animation to finish
• (static) CoroutineYield.Join: Waiting for all previous animations to finish
• (static) CoroutineYield.Sleep: Waiting for a delay of specified time
• CoroutineYield.WaitUntil: Waiting until a timestamp (since the animation has begun)
• CoroutineYield.WaitUntilPredicate: Waiting until a condition is satisfied
• (static) CoroutineYield.Suspend: Suspending an update without influencing the flow of time

This allows mixing both serial and parallel execution.