Using Credits

Credits are a numeric attribute of each game user. It is a simple integer value that you can add manually.

Credits are automatically detracted upon store item purchases.

What you find in the example below is a script that demonstrates the full lifecycle of credits of a signed-in user. the Start function executes these operations in order:

1. prints the credits your signed in user has
2. prints the cost of the first store item
3. adds credits to your user

Because the third operation syncs with the server it requires a callback.

Upon success you will see that the user now has more credits when logged.

Finally you can run the purchase store item function successfully.

Example

void UMyObject::UsingCredits()
{
    FUserCallback CompletionCallback;
    CompletionCallback.BindDynamic(this, &UMyObject::OnCreditAddedCallback);

    UGameFuseUser* GameFuseUser = GEtgaMeinstance()->getsubsysTEm < uGameFuseuser > ();
    TArray < UGameFuseStoreItem* > StoreItems = UGameFuseManager::GetGameStoreItems();

    UE_LOG(LogTemp, Error, TEXT("current credits : %d"), GameFuseUser->GetCredits());
    UE_LOG(LogTemp, Error, TEXT("first store item price : %d"), (UGameFuseManager::GetGameStoreItems().Top()->GetCost()));

    GameFuseUser->AddCredits(50, CompletionCallback);
}

void UMyObject::OnCreditAddedCallback(bool bSuccess, const FString& Response)
{
    if(bSuccess)
    {
        UE_LOG(LogTemp, Display, TEXT("Game Connected Successfully"));
        UE_LOG(LogTemp, Display, TEXT("Result : %s"), *Response);

        FUserCallback CompletionCallback;
        CompletionCallback.BindDynamic(this, &UMyObject::OnPurchaseStoreItemCallback);

        UGameFuseUser* GameFuseUser = GEtgaMeinstance()->getsubsysTEm < uGameFuseuser > ();
        GameFuseUser->PurchaseStoreItem(UGameFuseManager::GetGameStoreItems().Top(), CompletionCallback);
    }
    else
    {
        UE_LOG(LogTemp, Error, TEXT("Error connecting game"));
        UE_LOG(LogTemp, Error, TEXT("Result : %s"), *Response);
    }
}

void UMyObject::OnPurchaseStoreItemCallback(bool bSuccess, const FString& Response)
{
    if(bSuccess)
    {
        UE_LOG(LogTemp, Display, TEXT("Game Connected Successfully"));
        UE_LOG(LogTemp, Display, TEXT("Result : %s"), *Response);

    }
    else
    {
        UE_LOG(LogTemp, Error, TEXT("Error connecting game"));
        UE_LOG(LogTemp, Error, TEXT("Result : %s"), *Response);
    }
}

Function return values

UGameFuseUser->AddCredits

HTTP status code	Description
200	OK
400	Credits parameter missing
500	Unknown server error