Method OnSpawn

Source/Engine/Level/Level.cpp:1189–1247

}

SceneResult SceneLoader::OnSpawn(Args& args)
{
    PROFILE_CPU_NAMED("Spawn");

    // Get any injected children of the scene.
    InjectedSceneChildren = Scene->Children;

    // Allocate scene objects list
    SceneObjects = ActorsCache::SceneObjectsListCache.GetUnscoped();
    const int32 dataCount = (int32)args.Data.Size();
    SceneObjects->Resize(dataCount);
    SceneObjects->At(0) = Scene;
    AsyncJobs &= dataCount > 10;

    // Spawn all scene objects
    Context.Async = AsyncJobs;
    SceneObject** objects = SceneObjects->Get();
    if (Context.Async)
    {
        Level::ScenesLock.Unlock(); // Unlock scenes from Main Thread so Job Threads can use it to safely setup actors hierarchy (see Actor::Deserialize)
        JobSystem::Execute([&](int32 i)
        {
            PROFILE_MEM(Level);
            i++; // Start from 1. at index [0] was scene
            auto& stream = args.Data[i];
            auto obj = SceneObjectsFactory::Spawn(Context, stream);
            objects[i] = obj;
            if (obj)
            {
                if (!obj->IsRegistered())
                    obj->RegisterObject();
#if USE_EDITOR
                // Auto-create C# objects for all actors in Editor during scene load when running in async (so main thread already has all of them)
                if (!obj->GetManagedInstance())
                    obj->CreateManaged();
#endif
            }
            else
                SceneObjectsFactory::HandleObjectDeserializationError(stream);
        }, dataCount - 1);
        Level::ScenesLock.Lock();
    }
    else
    {
        for (int32 i = 1; i < dataCount; i++) // start from 1. at index [0] was scene
        {
            auto& stream = args.Data[i];
            auto obj = SceneObjectsFactory::Spawn(Context, stream);
            objects[i] = obj;
            if (obj)
                obj->RegisterObject();
            else
                SceneObjectsFactory::HandleObjectDeserializationError(stream);
        }
    }

    NextStage();
    return SceneResult::Success;