chore: add MarkBehaviour

API-Editor/ComponentInformation.cs

@@ -103,6 +103,20 @@ internal ComponentDependencyCollector()
         [PublicAPI]
         public abstract void MarkEntrypoint();
 
+        /// <summary>
+        /// Marks this component as Behaviour component, which means has some effects to components in the avatars.
+        /// When you mark some components Behaviour component, Avatar Optimizer will generate animation that disables
+        /// the component when entrypoint is not active / enabled.
+        ///
+        /// If your component is not marked as Behaviour, enable-ness / activeness will not changed by Avatar Optimizer.
+        /// If your component have some runtime load and can be skipped if your component is not needed by all
+        /// EntryPoint components, you should mark your component as Behaviour for runtime-load optimization.
+        ///
+        /// For example, VRCPhysBone and Constraints are marked as Behaviour.
+        /// </summary>
+        [PublicAPI]
+        public abstract void MarkBehaviour();
+
         /// <summary>
         /// Adds <see cref="dependency"/> as dependencies of <see cref="dependant"/>.
         /// The dependency will be assumed as the dependant will have dependency if dependant is enabled and

Editor/APIInternal/ComponentInfos.cs

@@ -317,6 +317,7 @@ protected override void CollectDependency(T component, ComponentDependencyCollec
                 .EvenIfDependantDisabled();
             for (var i = 0; i < component.sourceCount; i++)
                 collector.AddDependency(component.GetSource(i).sourceTransform);
+            collector.MarkBehaviour();
         }
     }
 
@@ -484,6 +485,8 @@ void CollectTransforms(Transform bone)
             foreach (var physBoneCollider in component.colliders)
                 collector.AddDependency(physBoneCollider).OnlyIfTargetCanBeEnable();
 
+            collector.MarkBehaviour();
+
             // If parameter is not empty, the PB can be required for Animator Parameter so it's Entrypoint Component
             // https://github.com/anatawa12/AvatarOptimizer/issues/450
             if (!string.IsNullOrEmpty(component.parameter))
@@ -572,6 +575,8 @@ internal class DynamicBoneInformation : ComponentInformation<Component>
     {
         protected override void CollectDependency(Component component, ComponentDependencyCollector collector)
         {
+            collector.MarkBehaviour();
+
             foreach (var transform in GetAffectedTransforms(component))
             {
                 collector.AddDependency(transform, component)

Editor/Processors/TraceAndOptimize/ComponentDependencyCollector.cs

@@ -95,6 +95,8 @@ public MeshInfo2 GetMeshInfoFor(SkinnedMeshRenderer renderer) =>
 
             public override void MarkEntrypoint() => _info.EntrypointComponent = true;
 
+            public override void MarkBehaviour() => _info.BehaviourComponent = true;
+
             private API.ComponentDependencyInfo AddDependencyInternal(
                 [NotNull] GCComponentInfo info,
                 [CanBeNull] Component dependency,

Editor/Processors/TraceAndOptimize/GCComponentInfo.cs

@@ -52,9 +52,14 @@ public GCComponentInfo TryGetInfo(Component dependent) =>
     internal class GCComponentInfo
     {
         /// <summary>
-        /// True if this component has Active Meaning on the Avatar.
+        /// True if this component has Active side-effect Meaning on the Avatar.
         /// </summary>
         public bool EntrypointComponent = false;
+
+        /// <summary>
+        /// True if activeness of this component has meaning and inactive is lighter
+        /// </summary>
+        public bool BehaviourComponent = false;
 
         /// <summary>
         /// Dependencies of this component