API Reference of GS2-Showcase SDK for Game Engine

Model

EzSalesItem

Showcase

Set the price required to purchase the product and the reward earned for the purchase of the product.

	Type	Require	Limitation	Description
name	string	✓	~ 128 chars	Product Name
metadata	string		~ 2048 chars	metadata
consumeActions	List<EzConsumeAction>		~ 10 items	List of Consumption Action
acquireActions	List<EzAcquireAction>	✓	1 ~ 100 items	List of Acquire Action

EzSalesItemGroup

Product Group

A product group is an entity for display on a showcase. The first product that is determined to be available for purchase is actually displayed on the shelves. This can be used for products that are discounted only for the first time, or for a system in which the contents of products change depending on the number of times they are purchased, such as a step-up gacha.

	Type	Require	Limitation	Description
name	string	✓	~ 128 chars	Product Group Name
metadata	string		~ 2048 chars	metadata
salesItems	List<EzSalesItem>	✓	2 ~ 10 items	Products to be included in the product group

EzShowcase

Showcase

The sales period can be set for the display shelf.

	Type	Require	Limitation	Description
name	string	✓	~ 128 chars	Showcase Name
metadata	string		~ 2048 chars	metadata
displayItems	List<EzDisplayItem>	✓	1 ~ 1000 items	List of Products on display

EzDisplayItem

Displayed Item

	Type	Require	Default	Limitation	Description
displayItemId	string	✓	UUID	~ 128 chars	Displayed Item ID
type	enum [‘salesItem’, ‘salesItemGroup’]	✓		~ 128 chars	Type
salesItem	EzSalesItem	{type} == “salesItem”			Products to be displayed
salesItemGroup	EzSalesItemGroup	{type} == “salesItemGroup”			Product group to be displayed

EzRandomDisplayItem

Random displayable items on the Random Showcase

	Type	Require	Default	Limitation	Description
name	string	✓	UUID	~ 128 chars	Random Displayed Item ID
metadata	string			~ 2048 chars	metadata
consumeActions	List<EzConsumeAction>			~ 10 items	List of Consumption Action
acquireActions	List<EzAcquireAction>	✓		1 ~ 100 items	List of Acquire Action
currentPurchaseCount	int	✓		1 ~ 2147483646	Current purchase count
maximumPurchaseCount	int	✓		1 ~ 2147483646	Maximum purchase count

EzConfig

	Type	Require	Default	Limitation	Description
key	string	✓		~ 64 chars	Name
value	string			~ 51200 chars	Value

EzConsumeAction

	Type	Require	Default	Limitation	Description
action	enum []	✓		~ 128 chars	Types of actions to be performed in the stamp task
request	string	✓		~ 1048576 chars	JSON of the obtain request

EzAcquireAction

	Type	Require	Default	Limitation	Description
action	enum []	✓		~ 128 chars	Types of actions to be performed in the stamp sheet
request	string	✓		~ 1048576 chars	JSON of request

Methods

buy

Buy Product

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
showcaseName	string	✓		~ 128 chars	Showcase Name
accessToken	string	✓		~ 128 chars	User Id
displayItemId	string	✓	UUID	~ 128 chars	Displayed Item ID
quantity	int	✓	1	1 ~ 1000	Purchase Quantity
config	List<EzConfig>		[]	~ 32 items	Set values to be applied to stamp sheet variables

Result

	Type	Description
item	EzSalesItem	Product
transactionId	string	Transaction ID of the stamp sheet issued
stampSheet	string	Stamp sheets used to execute the purchase process
stampSheetEncryptionKeyId	string	Cryptographic key GRN used for stamp sheet signature calculations
autoRunStampSheet	bool	Is stamp sheet auto-execution enabled?

Implementation Example

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Showcase(
        showcaseName: "showcase-0001"
    ).DisplayItem(
        displayItemId: "display-item-0001"
    );
    var result = await domain.BuyAsync(
        quantity: null,
        config: null
    );
    // 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().

    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(
        AccessToken
    )->Showcase(
        "showcase-0001" // showcaseName
    )->DisplayItem(
        "display-item-0001" // displayItemId
    );
    const auto Future = Domain->Buy(
        nullptr, // quantity
        nullptr // config
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

getShowcase

Retrieve showcase

Request

	Type	Require	Limitation	Description
namespaceName	string	✓	~ 32 chars	Namespace name
accessToken	string	✓	~ 128 chars	User Id
showcaseName	string	✓	~ 128 chars	Showcase Name

Result

	Type	Description
item	EzShowcase	Showcase

Implementation Example

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Showcase(
        showcaseName: "showcase-0001"
    );
    var item = await domain.ModelAsync();

    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(
        AccessToken
    )->Showcase(
        "showcase-0001" // showcaseName
    );
    const auto Future = Domain.Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

Value change event handling

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Showcase(
        showcaseName: "showcase-0001"
    );
    
    // 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);

    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(
        AccessToken
    )->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);

Warning

This event is called when the value in the local cache that the SDK has is changed.

The local cache will only be changed by executing the SDK’s API, or by executing a stamp sheet via GS2-Distributor with GS2-Gateway notification enabled, or by executing a GS2-JobQueue with GS2-Gateway notification enabled. GS2-Gateway notification enabled.

Therefore, callbacks will not be invoked if the value is changed in any other way.

getRandomShowcaseDisplayItem

Get random showcase display item

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
accessToken	string	✓		~ 128 chars	User Id
showcaseName	string	✓		~ 128 chars	Random Showcase Name
displayItemName	string	✓	UUID	~ 128 chars	Random Displayed Item ID

Result

	Type	Description
item	EzRandomDisplayItem	Displayed item

Implementation Example

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    ).RandomDisplayItem(
        displayItemName: "display-item-0001"
    );
    var item = await domain.ModelAsync();

    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(
        AccessToken
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    )->RandomDisplayItem(
        "display-item-0001" // displayItemName
    );
    const auto Future = Domain.Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

Value change event handling

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

    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(
        AccessToken
    )->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);

Warning

This event is called when the value in the local cache that the SDK has is changed.

Therefore, callbacks will not be invoked if the value is changed in any other way.

listRandomShowcaseDisplayItems

Retrieve random showcase display items

Request

	Type	Require	Limitation	Description
namespaceName	string	✓	~ 32 chars	Namespace name
accessToken	string	✓	~ 128 chars	User Id
showcaseName	string	✓	~ 128 chars	Random Showcase Name

Result

	Type	Description
items	List<EzRandomDisplayItem>	Displayed items

Implementation Example

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    );
    var items = await domain.RandomDisplayItemsAsync(
    ).ToListAsync();

    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(
        AccessToken
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    );
    const auto It = Domain->RandomDisplayItems(
    );
    for (auto Item : *It)
    {

    }

Value change event handling

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    );
    
    // Start event handling
    var 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"
    );
    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(
        AccessToken
    )->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);

Warning

This event is called when the value in the local cache that the SDK has is changed.

Therefore, callbacks will not be invoked if the value is changed in any other way.

randomShowcaseBuy

Buy Product from random showcase

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
showcaseName	string	✓		~ 128 chars	Random Showcase Name
accessToken	string	✓		~ 128 chars	User Id
displayItemName	string	✓	UUID	~ 128 chars	Random Displayed Item ID
quantity	int	✓	1	1 ~ 1000	Purchase Quantity
config	List<EzConfig>		[]	~ 32 items	Set values to be applied to stamp sheet variables

Result

	Type	Description
item	EzRandomDisplayItem	Displayed item
transactionId	string	Transaction ID of the stamp sheet issued
stampSheet	string	Stamp sheets used to execute the purchase process
stampSheetEncryptionKeyId	string	Cryptographic key GRN used for stamp sheet signature calculations
autoRunStampSheet	bool	Is stamp sheet auto-execution enabled?

Implementation Example

    var domain = gs2.Showcase.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).RandomShowcase(
        showcaseName: "showcase-0001"
    ).RandomDisplayItem(
        displayItemName: "display-item-0001"
    );
    var result = await domain.RandomShowcaseBuyAsync(
        quantity: 1,
        config: null
    );
    // 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().

    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(
        AccessToken
    )->RandomShowcase(
        "showcase-0001" // showcaseName
    )->RandomDisplayItem(
        "display-item-0001" // displayItemName
    );
    const auto Future = Domain->RandomShowcaseBuy(
        1, // quantity
        nullptr // config
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }