Fix boe importing not changing the parent index

Switch_FileFormatsMain/FileFormats/BFRES/Bfres Structs/SubFiles/FMDL/FSKL.cs

@@ -259,6 +259,7 @@ namespace Bfres.Structs
                         {
                             ResU.Bone bone = new ResU.Bone();
                             bone.Import(FileName, GetResFileU());
+                            bone.ParentIndex = -1;
 
                             BfresWiiU.ReadBone(bn, bone, false);
                         }
@@ -266,6 +267,7 @@ namespace Bfres.Structs
                         {
                             Bone bone = new Bone();
                             bone.Import(FileName);
+                            bone.ParentIndex = -1;
 
                             BfresSwitch.ReadBone(bn, bone, false);
                         }
@@ -541,10 +543,12 @@ namespace Bfres.Structs
                     BoneU = new ResU.Bone();
                     BoneU.Import(ofd.FileName, GetResFileU());
                     BoneU.Name = CheckDuplicateBoneNames(BoneU.Name);
-
                     BfresWiiU.ReadBone(bn, BoneU, false);
+
                     Nodes.Add(bn);
                     skeletonParent.bones.Add(bn);
+
+                    BoneU.ParentIndex = (short)bn.parentIndex;
                     ((FSKL)skeletonParent).AddBone(BoneU);
                 }
                 else
@@ -552,10 +556,12 @@ namespace Bfres.Structs
                     Bone = new Bone();
                     Bone.Import(ofd.FileName);
                     Bone.Name = CheckDuplicateBoneNames(Bone.Name);
-
                     BfresSwitch.ReadBone(bn, Bone, false);
+
                     Nodes.Add(bn);
                     skeletonParent.bones.Add(bn);
+
+                    BoneU.ParentIndex = (short)bn.parentIndex;
                     ((FSKL)skeletonParent).AddBone(Bone);
                 }
             }

Switch_Toolbox_Library/FileFormats/Assimp/Assimp.cs

@@ -13,6 +13,8 @@ namespace Switch_Toolbox.Library
 {
     public class AssimpData
     {
+        public bool UseTransformMatrix = true;
+
         public Scene scene;
 
         public List<STGenericObject> objects = new List<STGenericObject>();
@@ -78,11 +80,15 @@ namespace Switch_Toolbox.Library
             }
         }
         private void BuildNode(Node parent, ref Matrix4x4 rootTransform)
+        {
+            Matrix4x4 world = rootTransform;
+            Matrix4 worldTK = Matrix4.Identity;
+            if (UseTransformMatrix)
             {
                 Matrix4x4 trafo = parent.Transform;
-            Matrix4x4 world = trafo * rootTransform;
-            Matrix4 worldTK = AssimpHelper.TKMatrix(world);
-
+                world = trafo * rootTransform;
+                 worldTK = AssimpHelper.TKMatrix(world);
+            }
 
             if (parent.MeshCount > 0)
             {