AAoETerrainActor* Descriptor = World->SpawnActor<AAoETerrainActor>();
    Descriptor->SetActorLabel(TEXT("Frontier - baked gameplay terrain"));
    Descriptor->SetIsSpatiallyLoaded(false);
    Descriptor->bEnableAutoLODGeneration = false;
    Descriptor->bUseBakedLandscape = true;
    Descriptor->Seed = Seed; Descriptor->Resolution = N; Descriptor->ExtentCm = Extent;
    Descriptor->HeightScaleCm = 26000;
    Descriptor->BakedHeights.SetNumUninitialized(N*N);
    Descriptor->BakedBiomes.SetNumUninitialized(N*N);
    for (int32 Y = 0; Y < N; ++Y) for (int32 X = 0; X < N; ++X)
    {
        Descriptor->BakedHeights[Y*N+X] = uint16(FMath::Clamp(FMath::RoundToInt(Field.HeightAtWorld(-Extent+X*Step, -Extent+Y*Step)), 0, 65535));
    }
    TArray<uint16> Sorted = Descriptor->BakedHeights;
    Sorted.Sort();
    Descriptor->LastWaterZ = Sorted[FMath::FloorToInt(Sorted.Num()*0.18)];
    Descriptor->LastMinZ = Sorted[0]; Descriptor->LastMaxZ = Sorted.Last();
    Descriptor->LastVertexCount = N*N;

    TArray<FLandscapeImportLayerInfo> Layers;
    TArray<int32> BiomeCounts; BiomeCounts.Init(0, 8);
    const FString AssetRoot = FPackageName::GetLongPackagePath(MapPackage) / FPackageName::GetShortName(MapPackage) + TEXT("_Assets");