fix: MergeDirectBlendTree overwrites animator default parameters with zeroes (#689)

Editor/MergeBlendTreePass.cs

@@ -1,8 +1,9 @@
 #if MA_VRCSDK3_AVATARS
 
+#region
+
 using System;
 using System.Collections.Generic;
-using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
 using nadena.dev.modular_avatar.animation;
 using nadena.dev.ndmf;
 using nadena.dev.ndmf.util;
@@ -10,6 +11,8 @@ using UnityEditor.Animations;
 using UnityEngine;
 using VRC.SDK3.Avatars.Components;
 
+#endregion
+
 namespace nadena.dev.modular_avatar.core.editor
 {
     internal class MergeBlendTreePass : Pass<MergeBlendTreePass>
@@ -19,6 +22,7 @@ namespace nadena.dev.modular_avatar.core.editor
 
         private AnimatorController _controller;
         private BlendTree _rootBlendTree;
+        private GameObject _mergeHost;
         private HashSet<string> _parameterNames;
 
         protected override void Execute(ndmf.BuildContext context)
@@ -34,27 +38,33 @@ namespace nadena.dev.modular_avatar.core.editor
             }
 
             List<AnimatorControllerParameter> parameters = new List<AnimatorControllerParameter>(_parameterNames.Count + 1);
-            if (_controller != null)
+            if (_mergeHost != null)
             {
                 _parameterNames.Remove(ALWAYS_ONE);
 
                 parameters.Add(new AnimatorControllerParameter()
                 {
-                    defaultFloat = 1,
                     name = ALWAYS_ONE,
-                    type = AnimatorControllerParameterType.Float
+                    type = AnimatorControllerParameterType.Float,
+                    defaultFloat = 1
                 });
-
+                
                 foreach (var name in _parameterNames)
                 {
                     parameters.Add(new AnimatorControllerParameter()
                     {
                         name = name,
-                        type = AnimatorControllerParameterType.Float
+                        type = AnimatorControllerParameterType.Float,
+                        defaultFloat = 0
                     });
                 }
 
-                _controller.parameters = parameters.ToArray();
+                var paramsAnimator = new AnimatorController();
+                paramsAnimator.parameters = parameters.ToArray();
+
+                var paramsComponent = _mergeHost.AddComponent<ModularAvatarMergeAnimator>();
+                paramsComponent.animator = paramsAnimator;
+                paramsComponent.layerPriority = Int32.MaxValue;
             }
         }
 
@@ -167,6 +177,8 @@ namespace nadena.dev.modular_avatar.core.editor
             mergeObject.transform.SetParent(context.AvatarRootTransform, false);
             mergeObject.transform.SetSiblingIndex(0);
 
+            _mergeHost = mergeObject;
+
             return _rootBlendTree;
         }
     }

Runtime/ModularAvatarParameters.cs

@@ -36,7 +36,7 @@ namespace nadena.dev.modular_avatar.core
 
         internal bool OverrideAnimatorDefaults
         {
-            get => m_overrideAnimatorDefaults || syncType == ParameterSyncType.NotSynced && hasExplicitDefaultValue;
+            get => m_overrideAnimatorDefaults || syncType == ParameterSyncType.NotSynced && HasDefaultValue;
             set => m_overrideAnimatorDefaults = value;
         }
 

UnitTests~/DirectBlendTreeParameters/DirectBlendTreeParameters.prefab

@@ -25,12 +25,13 @@ Transform:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 358086172465847897}
+  serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
   m_Children: []
   m_Father: {fileID: 4724854421498416451}
-  m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!114 &8166779794048720401
 MonoBehaviour:
@@ -50,8 +51,11 @@ MonoBehaviour:
     internalParameter: 0
     isPrefix: 0
     syncType: 0
+    localOnly: 0
     defaultValue: 0
     saved: 0
+    hasExplicitDefaultValue: 0
+    m_overrideAnimatorDefaults: 0
 --- !u!114 &3545031262107578409
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -69,6 +73,9 @@ MonoBehaviour:
   deleteAttachedAnimator: 0
   pathMode: 0
   matchAvatarWriteDefaults: 0
+  relativePathRoot:
+    referencePath: 
+  layerPriority: 0
 --- !u!1 &6524782399038551043
 GameObject:
   m_ObjectHideFlags: 0
@@ -95,13 +102,14 @@ Transform:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 6524782399038551043}
+  serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
   m_LocalPosition: {x: 4.1121078, y: 0.04631436, z: -0.7135619}
   m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
   m_Children:
   - {fileID: 4301418309833736947}
   m_Father: {fileID: 0}
-  m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!114 &2239338889414089943
 MonoBehaviour:
@@ -129,6 +137,7 @@ MonoBehaviour:
   unityVersion: 
   portraitCameraPositionOffset: {x: 0, y: 0, z: 0}
   portraitCameraRotationOffset: {x: 0, y: 1, z: 0, w: -0.00000004371139}
+  networkIDs: []
   customExpressions: 0
   expressionsMenu: {fileID: 0}
   expressionParameters: {fileID: 0}
@@ -371,7 +380,7 @@ MonoBehaviour:
   fallbackStatus: 0
 --- !u!95 &5629002289773137650
 Animator:
-  serializedVersion: 3
+  serializedVersion: 5
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
@@ -384,7 +393,9 @@ Animator:
   m_UpdateMode: 0
   m_ApplyRootMotion: 0
   m_LinearVelocityBlending: 0
+  m_StabilizeFeet: 0
   m_WarningMessage: 
   m_HasTransformHierarchy: 1
   m_AllowConstantClipSamplingOptimization: 1
-  m_KeepAnimatorControllerStateOnDisable: 0
+  m_KeepAnimatorStateOnDisable: 0
+  m_WriteDefaultValuesOnDisable: 0

UnitTests~/MergeDBT.meta

@@ -0,0 +1,8 @@
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+folderAsset: yes
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UnitTests~/MergeDBT/DBT_DoesNotOverwriteParameters.prefab

@@ -0,0 +1,374 @@
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UnitTests~/MergeDBT/DBT_DoesNotOverwriteParameters.prefab.meta

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UnitTests~/MergeDBT/MergeDBT.asset

@@ -0,0 +1,17 @@
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+--- !u!206 &20600000
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+  m_PrefabAsset: {fileID: 0}
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UnitTests~/MergeDBT/MergeDirectBlendTreeTests.cs

@@ -0,0 +1,26 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using modular_avatar_tests;
+using nadena.dev.ndmf;
+using NUnit.Framework;
+using UnityEditor.Animations;
+using UnityEngine;
+
+public class MergeDirectBlendTreeTests : TestBase
+{
+    [Test]
+    public void DoesNotOverwriteBaseParameters()
+    {
+        var prefab = CreatePrefab("DBT_DoesNotOverwriteParameters.prefab");
+        
+        AvatarProcessor.ProcessAvatar(prefab);
+
+        var fx = FindFxController(prefab);
+        var ac = (AnimatorController)fx.animatorController;
+        var parameters = ac.parameters.ToImmutableDictionary(i => i.name, i => i.defaultFloat);
+        
+        Assert.AreEqual(123, parameters["ABC"]);
+        Assert.AreEqual(0, parameters["DEF"]);
+    }
+}

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UnitTests~/MergeDBT/controller.controller

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+    m_IKPass: 0
+    m_SyncedLayerAffectsTiming: 0
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UnitTests~/MergeDBT/controller.controller.meta

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