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Add preserving local changes to model prefab objects when reimporting

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#2275
This commit is contained in:
Wojtek Figat
2024-09-19 11:18:42 +02:00
parent 87b0cc705e
commit 93d9b9877c
1 changed files with 28 additions and 0 deletions
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28
Source/Engine/ContentImporters/ImportModel.cpp
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@@ -5,6 +5,7 @@
#if COMPILE_WITH_ASSETS_IMPORTER
#include "Engine/Core/Log.h"
#include "Engine/Core/Cache.h"
#include "Engine/Core/Collections/Sorting.h"
#include "Engine/Core/Collections/ArrayExtensions.h"
#include "Engine/Serialization/MemoryWriteStream.h"
@@ -765,6 +766,7 @@ CreateAssetResult ImportModel::CreatePrefab(CreateAssetContext& context, ModelDa
// Link with object from prefab (if reimporting)
if (prefab)
{
rapidjson_flax::StringBuffer buffer;
for (Actor* a : nodeActors)
{
for (const auto& i : prefab->ObjectsCache)
@@ -775,6 +777,32 @@ CreateAssetResult ImportModel::CreatePrefab(CreateAssetContext& context, ModelDa
if (o->GetName() != a->GetName()) // Name match
continue;
// Preserve local changes made in the prefab
{
// Serialize
buffer.Clear();
CompactJsonWriter writer(buffer);
writer.StartObject();
const void* defaultInstance = o->GetType().GetDefaultInstance();
o->Serialize(writer, defaultInstance);
writer.EndObject();
// Parse json
rapidjson_flax::Document document;
document.Parse(buffer.GetString(), buffer.GetSize());
// Strip unwanted data
document.RemoveMember("ID");
document.RemoveMember("ParentID");
document.RemoveMember("PrefabID");
document.RemoveMember("PrefabObjectID");
document.RemoveMember("Name");
// Deserialize object
auto modifier = Cache::ISerializeModifier.Get();
a->Deserialize(document, &*modifier);
}
// Mark as this object already exists in prefab so will be preserved when updating it
a->LinkPrefab(o->GetPrefabID(), o->GetPrefabObjectID());
break;