Function BuildActorRow

Source/URLabEditor/Private/MjLevelOps.cpp:1011–1048

Build the same per-actor row shape ListActorsSync emits. Lifted out so FindActorsSync + SnapshotSceneSync share it.

// Build the same per-actor row shape ListActorsSync emits. Lifted
// out so FindActorsSync + SnapshotSceneSync share it.
TSharedPtr<FJsonObject> BuildActorRow(AActor* A)
{
	TSharedPtr<FJsonObject> Obj = MakeShared<FJsonObject>();
	Obj->SetStringField(TEXT("name"), A->GetName());
#if WITH_EDITOR
	FString Label = A->GetActorLabel();
#else
	FString Label = A->GetName();
#endif
	if (Label.IsEmpty())
		Label = A->GetName();
	Obj->SetStringField(TEXT("label"), Label);
	Obj->SetStringField(TEXT("class"), A->GetClass()->GetName());
	Obj->SetStringField(TEXT("actor_id"), ExtractActorId(A));

	const FVector UELoc = A->GetActorLocation();
	const FQuat UEQ = A->GetActorQuat();
	double MjPos[3], MjQuat[4];
	MjUtils::UEToMjPosition(UELoc, MjPos);
	MjUtils::UEToMjRotation(UEQ, MjQuat);
	TArray<TSharedPtr<FJsonValue>> LocOut;
	for (int i = 0; i < 3; ++i)
		LocOut.Add(MakeShared<FJsonValueNumber>(MjPos[i]));
	Obj->SetArrayField(TEXT("location"), LocOut);
	// Bridge convention: xyzw on the wire, MJ stores wxyz.
	TArray<TSharedPtr<FJsonValue>> QuatOut;
	QuatOut.Add(MakeShared<FJsonValueNumber>(MjQuat[1]));
	QuatOut.Add(MakeShared<FJsonValueNumber>(MjQuat[2]));
	QuatOut.Add(MakeShared<FJsonValueNumber>(MjQuat[3]));
	QuatOut.Add(MakeShared<FJsonValueNumber>(MjQuat[0]));
	Obj->SetArrayField(TEXT("rotation_quat"), QuatOut);

	TArray<TSharedPtr<FJsonValue>> TagsOut;
	for (const FName& Tag : A->Tags)
		TagsOut.Add(MakeShared<FJsonValueString>(Tag.ToString()));
	Obj->SetArrayField(TEXT("tags"), TagsOut);
	return Obj;
}

UWorld* PickWorld(bool bWantPie, bool& bOutChosePie)
{