add smoother demo

UnityProject/Assets/Scenes/Examples/Smoother/Smoother.unity

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-  releaseTime: 0.5
-  holdTime: 0.2
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UnityProject/Assets/Scripts/Math/Smoother.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Timers;
 using UnityEngine;
 using UnityEngine.Events;
 
@@ -9,89 +10,23 @@ public class UnitySmoothEvent : UnityEvent<float>
 
 public class Smoother : MonoBehaviour
 {
-    [SerializeField] private float threshold;
+    [SerializeField, Range(1f, 10f)] private float attackSmooth = 1f;
-    [SerializeField] private float attackTime;
+    [SerializeField, Range(1f, 10f)] private float releaseSmooth = 1f;
-    [SerializeField] private float releaseTime;
+
-    [SerializeField] private float holdTime;
     [SerializeField] private UnitySmoothEvent onSmoothProcessed;
 
-    enum State
+    private float input_;
-    {
+    private float previous_;
-        StandBy,
-        Attack,
-        Hold,
-        Release
-    };
-    
-    private State state_ = State.StandBy;
-    private float attackStart_ = 0f;
-    private float holdStart_ = 0f;
-    private float releaseStart_ = 0f;
-    private float attackValue_ = 0f;
-    private bool releaseReady_ = false;
 
     public void OnValueChanged(float value)
     {
-        if (CanStartAttackPhase(value))
+        input_ = value;
-        {
-            state_ = State.Attack;
-            Debug.Log("Attack");
-            attackStart_ = Time.time;
-            attackValue_ = value;
-        }
-        else if (CanStartReleasePhase(value))
-        {
-            state_ = State.Release;
-            Debug.Log("Release");
-            releaseStart_ = Time.time;
-            releaseReady_ = false;
-        }
     }
 
     private void Update()
     {
-
+        var distance = input_ - previous_;
-        var now = Time.time;
+        previous_ += distance > 0f? (1f/attackSmooth) * distance : (1f/releaseSmooth) * distance;
-        switch (state_)
+        onSmoothProcessed.Invoke(previous_);
-        {
-            case State.Attack:
-            {
-                var timeSinceAttackStart =  now - attackStart_;
-                onSmoothProcessed.Invoke(attackValue_ * (timeSinceAttackStart / attackTime));
-
-                if (timeSinceAttackStart >= attackTime)
-                {
-                    state_ = State.Hold;
-                    Debug.Log("Hold");
-                }
-                break;
-            }
-            case State.Hold:
-            {
-                releaseReady_ = (now - holdStart_) > holdTime;
-                onSmoothProcessed.Invoke(attackValue_);
-                break;
-            }
-            case State.Release:
-            {
-                var timeSinceReleaseStart =  now - releaseStart_;
-                onSmoothProcessed.Invoke(attackValue_ * (1.0f - (timeSinceReleaseStart / releaseTime)));
-                if (timeSinceReleaseStart >= releaseTime)
-                {
-                    state_ = State.StandBy;
-                }
-                break;
-            }
-        }
-    }
-    
-    private bool CanStartAttackPhase(float value)
-    {
-        return value < threshold && state_ == State.StandBy;
-    }
-
-    private bool CanStartReleasePhase(float value)
-    {
-        return state_ == State.Hold && value < threshold && releaseReady_;
     }
 }