Obtaining Entries around user from leaderboard

Question

Hello!

Is there exists some request that will return entries around user (by userId) from leaderboard? For instance

Input: userId and entries count limit (let's call it N)

Output: userId LB entry, N entries before user's entry and N entries after user's entry

 

Such call would be very useful.

 

Thanks!

Answer 1

Hello,

You can easily achieve this by first finding the rank of user in the leader-board by GetUserRanking method. After that you can find the TopNRankers in the game using page offset and max result parameter as described below. Here page offset would be UserRank -N/2, and max result would be N. This will give the rankings of user who are N/2 above user and N/2 below user ranking.

String gameName = "<Enter_your_game_name>";

int max = 10; //Max result in leaderboard

// Page offset is from where you need to fetch the records.

//Lets say user has rank as 15 and you are looking 5 users above and below from this user. Offset would be in this case 15-10/2=10 (UserRank –N/2)

scoreBoardService.setPageOffset(10);  

scoreBoardService.getTopNRankers(gameName, max, new App42CallBack() {

public void onSuccess(Object response) 

{

            Game game = (Game)response;

            System.out.println("Game Name is : "+game.getName());

            for(int i = 0;i<game.getScoreList().size();i++)

            {

                        System.out.println("userName is : " + game.getScoreList().get(i).getUserName());

                        System.out.println("score is : " + game.getScoreList().get(i).getValue());

                        System.out.println("Created On is  :"+game.getScoreList().get(i).getCreatedOn());

                        System.out.println("scoreId is : " + game.getScoreList().get(i).getScoreId());

            }

}

public void onException(Exception ex) 

{

            System.out.println("Exception Message"+ex.getMessage());

}

});

 

Let us know if it helps.

Thanks,

Himanshu Sharma

 

Comments

Thanks!
But anyway it would be cool to do this operation by single request in the future :)

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Thanks for your feedback. We will add this in our backlog and update this thread with timeline.
Thanks,
Himanshu Sharma

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Thanks, I'll see those SetPageOffset methods in Unity/MonoDevelop now. But where is the documentation for this? I've gone through http://api.shephertz.com/app42-docs/leaderboard-service but found nothing about this.

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Hello Info,
 
Thanks for your feedback. We are adding this in doc too and would be live soon.  
Let me know if you have more question for us.

Himanshu Sharma

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I have the same requirement. In fact what would be even greater would be to get the ranking in the response when you post a score (but I understand this might not be feasible reliably in a NoSQL database)