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Simple Wrapper for Unity Playables API
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| using System; | |
| using System.Collections.Generic; | |
| using UnityEngine; | |
| using UnityEngine.Animations; | |
| using UnityEngine.Playables; | |
| using MEC; // Uses More Effective Coroutines from the Unity Asset Store | |
| public class AnimationSystem { | |
| PlayableGraph playableGraph; | |
| readonly AnimationMixerPlayable topLevelMixer; | |
| readonly AnimationMixerPlayable locomotionMixer; | |
| AnimationClipPlayable oneShotPlayable; | |
| CoroutineHandle blendInHandle; | |
| CoroutineHandle blendOutHandle; | |
| public AnimationSystem(Animator animator, AnimationClip idleClip, AnimationClip walkClip) { | |
| playableGraph = PlayableGraph.Create("AnimationSystem"); | |
| AnimationPlayableOutput playableOutput = AnimationPlayableOutput.Create(playableGraph, "Animation", animator); | |
| topLevelMixer = AnimationMixerPlayable.Create(playableGraph, 2); | |
| playableOutput.SetSourcePlayable(topLevelMixer); | |
| locomotionMixer = AnimationMixerPlayable.Create(playableGraph, 2); | |
| topLevelMixer.ConnectInput(0, locomotionMixer, 0); | |
| playableGraph.GetRootPlayable(0).SetInputWeight(0, 1f); | |
| AnimationClipPlayable idlePlayable = AnimationClipPlayable.Create(playableGraph, idleClip); | |
| AnimationClipPlayable walkPlayable = AnimationClipPlayable.Create(playableGraph, walkClip); | |
| idlePlayable.GetAnimationClip().wrapMode = WrapMode.Loop; | |
| walkPlayable.GetAnimationClip().wrapMode = WrapMode.Loop; | |
| locomotionMixer.ConnectInput(0, idlePlayable, 0); | |
| locomotionMixer.ConnectInput(1, walkPlayable, 0); | |
| playableGraph.Play(); | |
| } | |
| public void UpdateLocomotion(Vector3 velocity, float maxSpeed) { | |
| float weight = Mathf.InverseLerp(0f, maxSpeed, velocity.magnitude); | |
| locomotionMixer.SetInputWeight(0, 1f - weight); | |
| locomotionMixer.SetInputWeight(1, weight); | |
| } | |
| public void PlayOneShot(AnimationClip oneShotClip) { | |
| if (oneShotPlayable.IsValid() && oneShotPlayable.GetAnimationClip() == oneShotClip) return; | |
| InterruptOneShot(); | |
| oneShotPlayable = AnimationClipPlayable.Create(playableGraph, oneShotClip); | |
| topLevelMixer.ConnectInput(1, oneShotPlayable, 0); | |
| topLevelMixer.SetInputWeight(1, 1f); | |
| // Calculate blendDuration as 10% of clip length, | |
| // but ensure that it's not less than 0.1f or more than half the clip length | |
| float blendDuration = Mathf.Clamp(oneShotClip.length * 0.1f, 0.1f, oneShotClip.length * 0.5f); | |
| BlendIn(blendDuration); | |
| BlendOut(blendDuration, oneShotClip.length - blendDuration); | |
| } | |
| void BlendIn(float duration) { | |
| blendInHandle = Timing.RunCoroutine(Blend(duration, blendTime => { | |
| float weight = Mathf.Lerp(1f, 0f, blendTime); | |
| topLevelMixer.SetInputWeight(0, weight); | |
| topLevelMixer.SetInputWeight(1, 1f - weight); | |
| })); | |
| } | |
| void BlendOut(float duration, float delay) { | |
| blendOutHandle = Timing.RunCoroutine(Blend(duration, blendTime => { | |
| float weight = Mathf.Lerp(0f, 1f, blendTime); | |
| topLevelMixer.SetInputWeight(0, weight); | |
| topLevelMixer.SetInputWeight(1, 1f - weight); | |
| }, delay, DisconnectOneShot)); | |
| } | |
| IEnumerator<float> Blend(float duration, Action<float> blendCallback, float delay = 0f, Action finishedCallback = null) { | |
| if (delay > 0f) { | |
| yield return Timing.WaitForSeconds(delay); | |
| } | |
| float blendTime = 0f; | |
| while (blendTime < 1f) { | |
| blendTime += Time.deltaTime / duration; | |
| blendCallback(blendTime); | |
| yield return blendTime; | |
| } | |
| blendCallback(1f); | |
| finishedCallback?.Invoke(); | |
| } | |
| void InterruptOneShot() { | |
| Timing.KillCoroutines(blendInHandle); | |
| Timing.KillCoroutines(blendOutHandle); | |
| topLevelMixer.SetInputWeight(0, 1f); | |
| topLevelMixer.SetInputWeight(1, 0f); | |
| if (oneShotPlayable.IsValid()) { | |
| DisconnectOneShot(); | |
| } | |
| } | |
| void DisconnectOneShot() { | |
| topLevelMixer.DisconnectInput(1); | |
| playableGraph.DestroyPlayable(oneShotPlayable); | |
| } | |
| public void Destroy() { | |
| if (playableGraph.IsValid()) { | |
| playableGraph.Destroy(); | |
| } | |
| } | |
| } |
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