API Reference of GS2-Showcase SDK for Game Engine

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Showcase(
        showcaseName: "showcase-0001"
    ).DisplayItem(
        displayItemId: "display-item-0001"
    );
    var future = domain.BuyFuture(
        quantity: null,
        config: null
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    // New Experience ではスタンプシートはSDKレベルで自動的に実行されます。
    // エラーが発生すると TransactionException がスローされます。
    // TransactionException::Retry() でリトライが可能です。
    // In New Experience, stamp sheets are automatically executed at the SDK level.
    // If an error occurs, a TransactionException is thrown.
    // you can retry with TransactionException::Retry().

    const auto Domain = Gs2->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Showcase(
        "showcase-0001" // showcaseName
    )->DisplayItem(
        "display-item-0001" // displayItemId
    );
    const auto Future = Domain->Buy(
        // quantity
        // config
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Showcase(
        showcaseName: "showcase-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

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

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Showcase(
        showcaseName: "showcase-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Showcase(
        "showcase-0001" // showcaseName
    );
    
    // Start event handling
    const auto CallbackId = Domain->Subscribe(
        [](TSharedPtr<Gs2::Showcase::Model::FShowcase> value) {
            // Called when the value changes
            // The "value" is passed the value after the change.
        }
    );

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

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    ).RandomDisplayItem(
        displayItemName: "display-item-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    )->RandomDisplayItem(
        "display-item-0001" // displayItemName
    );
    const auto Future = Domain->Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    ).RandomDisplayItem(
        displayItemName: "display-item-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    )->RandomDisplayItem(
        "display-item-0001" // displayItemName
    );
    
    // Start event handling
    const auto CallbackId = Domain->Subscribe(
        [](TSharedPtr<Gs2::Showcase::Model::FRandomDisplayItem> value) {
            // Called when the value changes
            // The "value" is passed the value after the change.
        }
    );

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

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    );
    var it = domain.RandomDisplayItems(
    );
    List<EzRandomDisplayItem> items = new List<EzRandomDisplayItem>();
    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->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    );
    const auto It = Domain->RandomDisplayItems(
    );
    TArray<Gs2::UE5::Showcase::Model::FEzRandomDisplayItemPtr> Result;
    for (auto Item : *It)
    {
        if (Item.IsError())
        {
            return false;
        }
        Result.Add(Item.Current());
    }

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    );
    var it = domain.RandomDisplayItems(
    );
    List<EzRandomDisplayItem> items = new List<EzRandomDisplayItem>();
    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->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    );
    
    // Start event handling
    const auto CallbackId = Domain->SubscribeRandomDisplayItems(
        []() {
            // Called when an element of the list changes.
        }
    );

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

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    ).RandomDisplayItem(
        displayItemName: "display-item-0001"
    );
    var future = domain.RandomShowcaseBuyFuture(
        quantity: 1,
        config: null
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    // New Experience ではスタンプシートはSDKレベルで自動的に実行されます。
    // エラーが発生すると TransactionException がスローされます。
    // TransactionException::Retry() でリトライが可能です。
    // In New Experience, stamp sheets are automatically executed at the SDK level.
    // If an error occurs, a TransactionException is thrown.
    // you can retry with TransactionException::Retry().

    const auto Domain = Gs2->Showcase->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    )->RandomDisplayItem(
        "display-item-0001" // displayItemName
    );
    const auto Future = Domain->RandomShowcaseBuy(
        1 // quantity
        // config
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }