API Reference of GS2-Buff SDK for Game Engine

    var domain = gs2.Buff.Namespace(
        namespaceName: "namespace-0001"
    ).BuffEntryModel(
        buffEntryName: "character-level"
    );
    var future = domain.ModelFuture();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->Buff->Namespace(
        "namespace-0001" // namespaceName
    )->BuffEntryModel(
        "character-level" // buffEntryName
    );
    const auto Future = Domain->Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

    var domain = gs2.Buff.Namespace(
        namespaceName: "namespace-0001"
    ).BuffEntryModel(
        buffEntryName: "character-level"
    );
    
    // Start event handling
    var callbackId = domain.Subscribe(
        value => {
            // Called when the value changes
            // The "value" is passed the value after the change.
        }
    );

    // Stop event handling
    domain.Unsubscribe(callbackId);

    const auto Domain = Gs2->Buff->Namespace(
        "namespace-0001" // namespaceName
    )->BuffEntryModel(
        "character-level" // buffEntryName
    );
    
    // Start event handling
    const auto CallbackId = Domain->Subscribe(
        [](TSharedPtr<Gs2::Buff::Model::FBuffEntryModel> value) {
            // Called when the value changes
            // The "value" is passed the value after the change.
        }
    );

    // Stop event handling
    Domain->Unsubscribe(CallbackId);

    var domain = gs2.Buff.Namespace(
        namespaceName: "namespace-0001"
    );
    var it = domain.BuffEntryModels(
    );
    List<EzBuffEntryModel> items = new List<EzBuffEntryModel>();
    while (it.HasNext())
    {
        yield return it.Next();
        if (it.Error != null)
        {
            onError.Invoke(it.Error, null);
            break;
        }
        if (it.Current != null)
        {
            items.Add(it.Current);
        }
        else
        {
            break;
        }
    }

    const auto Domain = Gs2->Buff->Namespace(
        "namespace-0001" // namespaceName
    );
    const auto It = Domain->BuffEntryModels(
    );
    TArray<Gs2::UE5::Buff::Model::FEzBuffEntryModelPtr> Result;
    for (auto Item : *It)
    {
        if (Item.IsError())
        {
            return false;
        }
        Result.Add(Item.Current());
    }

    var domain = gs2.Buff.Namespace(
        namespaceName: "namespace-0001"
    );
    
    // Start event handling
    var callbackId = domain.SubscribeBuffEntryModels(
        () => {
            // Called when an element of the list changes.
        }
    );

    // Stop event handling
    domain.UnsubscribeBuffEntryModels(callbackId);

    const auto Domain = Gs2->Buff->Namespace(
        "namespace-0001" // namespaceName
    );
    
    // Start event handling
    const auto CallbackId = Domain->SubscribeBuffEntryModels(
        []() {
            // Called when an element of the list changes.
        }
    );

    // Stop event handling
    Domain->UnsubscribeBuffEntryModels(CallbackId);

    var domain = gs2.Buff.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Buff(
    );
    var future = domain.ApplyBuffFuture(
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    var future2 = future.Result.ModelFuture();
    yield return future2;
    if (future2.Error != null)
    {
        onError.Invoke(future2.Error, null);
        yield break;
    }
    var result = future2.Result;

    const auto Domain = Gs2->Buff->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Buff(
    );
    const auto Future = Domain->ApplyBuff(
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

    // obtain changed values / result values
    const auto Future2 = Future->GetTask().Result()->Model();
    Future2->StartSynchronousTask();
    if (Future2->GetTask().IsError())
    {
        return Future2->GetTask().Error();
    }
    const auto Result = Future2->GetTask().Result();