Add additional bone proxy validation

Closes: #85

Packages/nadena.dev.modular-avatar/Editor/BoneProxyProcessor.cs

@@ -28,13 +28,20 @@ namespace nadena.dev.modular_avatar.core.editor
 {
     internal class BoneProxyProcessor
     {
+        internal enum ValidationResult
+        {
+            OK,
+            MovingTarget,
+            NotInAvatar
+        }
+
         internal void OnPreprocessAvatar(GameObject avatarGameObject)
         {
             var boneProxies = avatarGameObject.GetComponentsInChildren<ModularAvatarBoneProxy>(true);
 
             foreach (var proxy in boneProxies)
             {
-                if (proxy.target != null)
+                if (proxy.target != null && ValidateTarget(avatarGameObject, proxy.target) == ValidationResult.OK)
                 {
                     var oldPath = RuntimeUtil.AvatarRootPath(proxy.gameObject);
                     Transform transform = proxy.transform;
@@ -51,5 +58,25 @@ namespace nadena.dev.modular_avatar.core.editor
                 Object.DestroyImmediate(proxy);
             }
         }
+
+        internal static ValidationResult ValidateTarget(GameObject avatarGameObject, Transform proxyTarget)
+        {
+            var avatar = avatarGameObject.transform;
+            var node = proxyTarget;
+
+            while (node != null && node != avatar)
+            {
+                if (node.GetComponent<ModularAvatarMergeArmature>() != null ||
+                    node.GetComponent<ModularAvatarBoneProxy>() != null)
+                {
+                    return ValidationResult.MovingTarget;
+                }
+
+                node = node.parent;
+            }
+
+            if (node == null) return ValidationResult.NotInAvatar;
+            else return ValidationResult.OK;
+        }
     }
 }

Packages/nadena.dev.modular-avatar/Editor/Inspector/BoneProxyEditor.cs

@@ -55,6 +55,15 @@ namespace nadena.dev.modular_avatar.core.editor
                 var virtObj = new SerializedObject(objRefs);
                 var virtProp = virtObj.FindProperty(nameof(TempObjRef.target));
 
+                if (virtProp.objectReferenceValue is Transform targetTransform)
+                {
+                    var validationResult = BoneProxyProcessor.ValidateTarget(parentAvatar, targetTransform);
+                    if (validationResult != BoneProxyProcessor.ValidationResult.OK)
+                    {
+                        EditorGUILayout.HelpBox(S("boneproxy.err." + validationResult), MessageType.Error);
+                    }
+                }
+
                 EditorGUI.BeginChangeCheck();
 
                 EditorGUILayout.PropertyField(virtProp, G("boneproxy.target"));
@@ -65,7 +74,9 @@ namespace nadena.dev.modular_avatar.core.editor
                     {
                         var t = (ModularAvatarBoneProxy) targets[i];
                         Undo.RecordObjects(targets, "Set targets");
-                        t.target = ((TempObjRef) objRefs[i]).target;
+                        var xform = ((TempObjRef) objRefs[i]).target;
+                        if (RuntimeUtil.FindAvatarInParents(xform)?.gameObject != parentAvatar) continue;
+                        t.target = xform;
                     }
                 }
             }

Packages/nadena.dev.modular-avatar/Editor/Localization/en.json

@@ -45,5 +45,7 @@
   "blendshape.mesh": "Mesh",
   "blendshape.source": "Source blendshape",
   "blendshape.target": "Target blendshape",
-  "hint.not_in_avatar": "This component needs to be placed inside your avatar to work properly."
+  "hint.not_in_avatar": "This component needs to be placed inside your avatar to work properly.",
+  "boneproxy.err.MovingTarget": "You cannot specify a target object that will be moved by other Modular Avatar components",
+  "boneproxy.err.NotInAvatar": "You must specify an object that is in the avatar"
 }

Packages/nadena.dev.modular-avatar/Editor/Localization/ja.json

@@ -45,5 +45,7 @@
   "blendshape.mesh": "メッシュ",
   "blendshape.source": "元メッシュのブレンドシェープ",
   "blendshape.target": "このメッシュのブレンドシェープ",
-  "hint.not_in_avatar": "このコンポーネントが正しく動作するには、アバター内に配置する必要があります。"
+  "hint.not_in_avatar": "このコンポーネントが正しく動作するには、アバター内に配置する必要があります。",
+  "boneproxy.err.MovingTarget": "他のモジュラーアバターコンポーネントで移動されるオブジェクトを指定できません。",
+  "boneproxy.err.NotInAvatar": "アバター内のオブジェクトを指定してください。"
 }