From e8e04b666d5b3ca70ff94746fb1bd16838e9a8e7 Mon Sep 17 00:00:00 2001
From: Nico de Poel <ndepoel@gmail.com>
Date: Fri, 23 Apr 2021 01:05:17 +0200
Subject: [PATCH] Allow run-time switching between lerped animations and
 keyframe-only animation, and made the playback speed configurable

---
 Assets/Scripts/Modules/AliasModelAnimator.cs | 26 ++++++++++++++------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/Assets/Scripts/Modules/AliasModelAnimator.cs b/Assets/Scripts/Modules/AliasModelAnimator.cs
index aad728b..66efa66 100644
--- a/Assets/Scripts/Modules/AliasModelAnimator.cs
+++ b/Assets/Scripts/Modules/AliasModelAnimator.cs
@@ -4,15 +4,22 @@ using UnityEngine;
 public class AliasModelAnimator : MonoBehaviour
 {
     public AliasModel aliasModel;
+
+    [SerializeField]
+    private bool lerpMove = true;
+
+    [SerializeField]
+    [Range(1, 20)]
+    private float animateFps = 5f;
     
-    //private int frameNumber = 0;
     private float frameNumber = 0;
 
     IEnumerator Start()
     {
         var meshRenderer = GetComponent<SkinnedMeshRenderer>();
-        if (!meshRenderer)
+        if (!meshRenderer || meshRenderer.sharedMesh == null || meshRenderer.sharedMesh.blendShapeCount == 0)
         {
+            Debug.LogWarning($"Unexpected AliasModelAnimator on non-animated object '{name}'");
             Destroy(this);
             yield break;
         }
@@ -25,11 +32,16 @@ public class AliasModelAnimator : MonoBehaviour
             meshRenderer.sharedMesh = mesh;
             meshRenderer.SetBlendShapeWeight(0, blendWeight);
 
-            //yield return new WaitForSeconds(0.1f); // Animate at 10 fps
-            yield return null;
-
-            //frameNumber = (frameNumber + 1) % numFrames;
-            frameNumber = (frameNumber + Time.deltaTime * 5) % numFrames;
+            if (lerpMove)
+            {
+                yield return null;
+                frameNumber = (frameNumber + Time.deltaTime * animateFps) % numFrames;
+            }
+            else
+            {
+                yield return new WaitForSeconds(1.0f / animateFps);
+                frameNumber = (frameNumber + 1) % numFrames;
+            }
         }
     }
 }