API Reference of GS2-SeasonRating SDK for Game Engine

Model

EzSeasonModel

Season Model

GS2 uses Glicko-2 as its rating algorithm. Glicko-2 has several parameters, but GS2-Matchmaking aggregates them into a single parameter, volatility, which represents the totality of the parameters. Volatility is a parameter that expresses the magnitude of change; the larger the value, the greater the change in the rating value.

	Type	Require	Limitation	Description
seasonModelId	string	✓	~ 1024 chars	Season Model GRN
name	string	✓	~ 128 chars	Season Model Name
metadata	string		~ 128 chars	metadata
tiers	List<EzTierModel>	✓	1 ~ 100 items	List of Tier
experienceModelId	string	✓	~ 1024 chars	Experience Model GRN

EzTierModel

Tear model

	Type	Require	Limitation	Description
metadata	string		~ 128 chars	metadata
raiseRankBonus	int	✓	~ 10000	The bonus points added to prevent immediate rank demotion when the rank is promoted.
minimumChangePoint	int	✓	~ -1	Change point minimum value when losing
maximumChangePoint	int	✓	1 ~ 99999999	Change point maximum value when winning

EzGameResult

Match Results

	Type	Require	Default	Limitation	Description
rank	int	✓		~ 2147483646	Rank
userId	string	✓		~ 128 chars	User Id

EzBallot

Ballot Paper

	Type	Require	Limitation	Description
userId	string	✓	~ 128 chars	User Id
seasonName	string	✓	~ 128 chars	Rating name used for rating calculations
sessionName	string	✓	~ 128 chars	Name of MatchSession to be voted
numberOfPlayer	int	✓	2 ~ 10	Number of participants

EzSignedBallot

Ballot with signatures

	Type	Require	Default	Limitation	Description
body	string	✓		~ 1024 chars	Data for ballot signature targets
signature	string	✓		~ 256 chars	Signature

Methods

getSeasonModel

Get a rating model by specifying a rating name

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
seasonName	string	✓		~ 128 chars	Season Model Name

Result

	Type	Description
item	EzSeasonModel	Season Model

Implementation Example

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).SeasonModel(
        seasonName: "mode1"
    );
    var item = await domain.ModelAsync();

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).SeasonModel(
        seasonName: "mode1"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    )->SeasonModel(
        "mode1" // seasonName
    );
    const auto Future = Domain->Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

Value change event handling

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).SeasonModel(
        seasonName: "mode1"
    );
    
    // 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.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).SeasonModel(
        seasonName: "mode1"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    )->SeasonModel(
        "mode1" // seasonName
    );
    
    // Start event handling
    const auto CallbackId = Domain->Subscribe(
        [](TSharedPtr<Gs2::SeasonRating::Model::FSeasonModel> 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.

listSeasonModels

Get list of rating models

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name

Result

	Type	Description
items	List<EzSeasonModel>	List of Season Model

Implementation Example

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var items = await domain.SeasonModelsAsync(
    ).ToListAsync();

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var it = domain.SeasonModels(
    );
    List<EzSeasonModel> items = new List<EzSeasonModel>();
    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->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    );
    const auto It = Domain->SeasonModels(
    );
    TArray<Gs2::UE5::SeasonRating::Model::FEzSeasonModelPtr> Result;
    for (auto Item : *It)
    {
        if (Item.IsError())
        {
            return false;
        }
        Result.Add(Item.Current());
    }

Value change event handling

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

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

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var it = domain.SeasonModels(
    );
    List<EzSeasonModel> items = new List<EzSeasonModel>();
    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->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    );
    
    // Start event handling
    const auto CallbackId = Domain->SubscribeSeasonModels(
        []() {
            // Called when an element of the list changes.
        }
    );

    // Stop event handling
    Domain->UnsubscribeSeasonModels(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.

createVote

Prepare a ballot

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
seasonName	string	✓		~ 128 chars	Season Model Name
sessionName	string	✓	UUID	~ 128 chars	Session Name
accessToken	string	✓		~ 128 chars	User Id
numberOfPlayer	int	✓		2 ~ 10	Number of participants
keyId	string	✓	“grn:gs2:{region}:{ownerId}:key:default:key:default”	~ 1024 chars	encryption key GRN

Result

	Type	Description
item	EzBallot	Ballot
body	string	Data to be signed
signature	string	Signature

Implementation Example

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Ballot(
        seasonName: "rating-0001",
        sessionName: "gathering-0001",
        numberOfPlayer: 4,
        keyId: "key-0001"
    );
    var item = await domain.ModelAsync();

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Ballot(
        seasonName: "rating-0001",
        sessionName: "gathering-0001",
        numberOfPlayer: 4,
        keyId: "key-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Ballot(
        "rating-0001", // seasonName
        "gathering-0001", // sessionName
        4, // numberOfPlayer
        "key-0001" // keyId
    );
    const auto Future = Domain->Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

Value change event handling

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Ballot(
        seasonName: "rating-0001",
        sessionName: "gathering-0001",
        numberOfPlayer: 4,
        keyId: "key-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.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Ballot(
        seasonName: "rating-0001",
        sessionName: "gathering-0001",
        numberOfPlayer: 4,
        keyId: "key-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;

    const auto Domain = Gs2->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Ballot(
        "rating-0001", // seasonName
        "gathering-0001", // sessionName
        4, // numberOfPlayer
        "key-0001" // keyId
    );
    
    // Start event handling
    const auto CallbackId = Domain->Subscribe(
        [](TSharedPtr<Gs2::SeasonRating::Model::FBallot> 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.

vote

Vote on the results of the matchups.

Voting must take place within 5 minutes of the first vote being cast. This means that the results will not be reflected immediately, but approximately 5 minutes after the start of voting or when all players have cast their votes. If all ballots are not collected within 5 minutes, the result will be determined by a majority vote based on the votes cast at that time. If the number of votes for each result is the same, the result will be discarded (the behavior can be changed by script).

If you want to reflect the result immediately, the representative player of the winning side can collect ballots from each player and call voteMultiple to reflect the result immediately.

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
ballotBody	string	✓		~ 1024 chars	Data for ballot signature targets
ballotSignature	string	✓		~ 256 chars	Signature
gameResults	List<EzGameResult>			~ 10 items	List of Results
keyId	string	✓	“grn:gs2:{region}:{ownerId}:key:default:key:default”	~ 1024 chars	encryption key GRN

Result

	Type	Description
item	EzBallot	Ballot

Implementation Example

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var result = await domain.VoteAsync(
        ballotBody: "ballotBody",
        ballotSignature: "ballotSignature",
        gameResults: new List<Gs2.Unity.Gs2SeasonRating.Model.EzGameResult> {
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 1,
                UserId = "user-0001",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0002",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0003",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 3,
                UserId = "user-0004",
            },
        },
        keyId: "key-0001"
    );
    var item = await result.ModelAsync();

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var future = domain.VoteFuture(
        ballotBody: "ballotBody",
        ballotSignature: "ballotSignature",
        gameResults: new List<Gs2.Unity.Gs2SeasonRating.Model.EzGameResult> {
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 1,
                UserId = "user-0001",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0002",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0003",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 3,
                UserId = "user-0004",
            },
        },
        keyId: "key-0001"
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    var future2 = future.Result.Model();
    yield return future2;
    if (future2.Error != null)
    {
        onError.Invoke(future2.Error, null);
        yield break;
    }
    var result = future2.Result;

    const auto Domain = Gs2->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    );
    const auto Future = Domain->Vote(
        "ballotBody", // ballotBody
        "ballotSignature", // ballotSignature
        []
        {
            auto v = MakeShared<TArray<TSharedPtr<Gs2::UE5::SeasonRating::Model::FEzGameResult>>>();
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(1))
                ->WithUserId(TOptional<FString>("user-0001"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(2))
                ->WithUserId(TOptional<FString>("user-0002"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(2))
                ->WithUserId(TOptional<FString>("user-0003"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(3))
                ->WithUserId(TOptional<FString>("user-0004"))
            );
            return v;
        }(), // gameResults
        "key-0001" // keyId
    );
    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();

voteMultiple

Vote on the results of the matchups together.

The side that wins the game collects the ballots of other players and uses them to vote collectively. We say ’the winning side’ because there is an incentive for the losing side to report that they won, but not vice versa. It is possible that the losing side will not hand in their ballots, but even in that case, if there is a majority of ballots, the results can still be passed.

Request

	Type	Require	Default	Limitation	Description
namespaceName	string	✓		~ 32 chars	Namespace name
signedBallots	List<EzSignedBallot>			~ 10 items	List of Ballot with signatures
gameResults	List<EzGameResult>			~ 10 items	List of Results
keyId	string	✓	“grn:gs2:{region}:{ownerId}:key:default:key:default”	~ 1024 chars	encryption key GRN

Result

	Type	Description
item	EzBallot	Ballot

Implementation Example

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var result = await domain.VoteMultipleAsync(
        signedBallots: new List<Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot> {
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
        },
        gameResults: new List<Gs2.Unity.Gs2SeasonRating.Model.EzGameResult> {
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 1,
                UserId = "user-0001",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0002",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0003",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 3,
                UserId = "user-0004",
            },
        },
        keyId: "key-0001"
    );
    var item = await result.ModelAsync();

    var domain = gs2.SeasonRating.Namespace(
        namespaceName: "namespace-0001"
    );
    var future = domain.VoteMultipleFuture(
        signedBallots: new List<Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot> {
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzSignedBallot() {
                Body = "aaa",
                Signature = "bbb",
            },
        },
        gameResults: new List<Gs2.Unity.Gs2SeasonRating.Model.EzGameResult> {
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 1,
                UserId = "user-0001",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0002",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 2,
                UserId = "user-0003",
            },
            new Gs2.Unity.Gs2SeasonRating.Model.EzGameResult() {
                Rank = 3,
                UserId = "user-0004",
            },
        },
        keyId: "key-0001"
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    var future2 = future.Result.Model();
    yield return future2;
    if (future2.Error != null)
    {
        onError.Invoke(future2.Error, null);
        yield break;
    }
    var result = future2.Result;

    const auto Domain = Gs2->SeasonRating->Namespace(
        "namespace-0001" // namespaceName
    );
    const auto Future = Domain->VoteMultiple(
        []
        {
            auto v = MakeShared<TArray<TSharedPtr<Gs2::UE5::SeasonRating::Model::FEzSignedBallot>>>();
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzSignedBallot>()
                ->WithBody(TOptional<FString>("aaa"))
                ->WithSignature(TOptional<FString>("bbb"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzSignedBallot>()
                ->WithBody(TOptional<FString>("aaa"))
                ->WithSignature(TOptional<FString>("bbb"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzSignedBallot>()
                ->WithBody(TOptional<FString>("aaa"))
                ->WithSignature(TOptional<FString>("bbb"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzSignedBallot>()
                ->WithBody(TOptional<FString>("aaa"))
                ->WithSignature(TOptional<FString>("bbb"))
            );
            return v;
        }(), // signedBallots
        []
        {
            auto v = MakeShared<TArray<TSharedPtr<Gs2::UE5::SeasonRating::Model::FEzGameResult>>>();
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(1))
                ->WithUserId(TOptional<FString>("user-0001"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(2))
                ->WithUserId(TOptional<FString>("user-0002"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(2))
                ->WithUserId(TOptional<FString>("user-0003"))
            );
            v->Add(
                MakeShared<Gs2::UE5::SeasonRating::Model::FEzGameResult>()
                ->WithRank(TOptional<int32>(3))
                ->WithUserId(TOptional<FString>("user-0004"))
            );
            return v;
        }(), // gameResults
        "key-0001" // keyId
    );
    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();