Add **skeleton retargeting** to play animations on different skeletons

Source/Engine/Graphics/Models/ModelData.cpp

@@ -782,6 +782,9 @@ bool ModelData::Pack2SkinnedModelHeader(WriteStream* stream) const
         return true;
     }
 
+    // Version
+    stream->WriteByte(1);
+
     // Min Screen Size
     stream->WriteFloat(MinScreenSize);
 
@@ -792,7 +795,6 @@ bool ModelData::Pack2SkinnedModelHeader(WriteStream* stream) const
     for (int32 materialSlotIndex = 0; materialSlotIndex < Materials.Count(); materialSlotIndex++)
     {
         auto& slot = Materials[materialSlotIndex];
-
         stream->Write(slot.AssetID);
         stream->WriteByte(static_cast<byte>(slot.ShadowsMode));
         stream->WriteString(slot.Name, 11);
@@ -878,6 +880,11 @@ bool ModelData::Pack2SkinnedModelHeader(WriteStream* stream) const
         }
     }
 
+    // Retargeting
+    {
+        stream->WriteInt32(0);
+    }
+
     return false;
 }
 

Source/Engine/Graphics/Models/SkeletonData.h

@@ -112,7 +112,7 @@ public:
         Bones.Swap(other.Bones);
     }
 
-    int32 FindNode(const StringView& name)
+    int32 FindNode(const StringView& name) const
     {
         for (int32 i = 0; i < Nodes.Count(); i++)
         {
@@ -122,7 +122,7 @@ public:
         return -1;
     }
 
-    int32 FindBone(int32 nodeIndex)
+    int32 FindBone(int32 nodeIndex) const
     {
         for (int32 i = 0; i < Bones.Count(); i++)
         {

Source/Engine/Graphics/Models/SkinnedMesh.cpp

@@ -331,6 +331,7 @@ bool SkinnedMesh::DownloadDataCPU(MeshBufferType type, BytesContainer& result, i
         MemoryReadStream stream(chunk->Get(), chunk->Size());
 
         // Seek to find mesh location
+        byte version = stream.ReadByte();
         for (int32 i = 0; i <= _index; i++)
         {
             // #MODEL_DATA_FORMAT_USAGE

Source/Engine/Graphics/Models/SkinnedModelLOD.cpp

@@ -15,6 +15,7 @@ bool SkinnedModelLOD::HasAnyMeshInitialized() const
 bool SkinnedModelLOD::Load(MemoryReadStream& stream)
 {
     // Load LOD for each mesh
+    byte version = stream.ReadByte();
     for (int32 i = 0; i < Meshes.Count(); i++)
     {
         auto& mesh = Meshes[i];