GameCenter [Read Leaderboard Integer] Latency?

Development Programming & Scripting
1

On a physical iPhone4/iPad2 I am logged into GameCenter as a tester using a non-live leaderboard.

I’ve noticed that during testing, after the [Show External Login UI] has displayed the “Welcome back” banner,
calling [Read Leaderboard Integer] doesn’t always return the latest highscore that is shown in my sandbox leaderboard. However, the returned result is quite random.

E.g. my leaderboard currently has a highscore of 592.

After uninstalling/installing my app on a device, after the “Welcome back” banner [Read Leaderboard Integer]
sometimes returns 592, but 70% of the time it returns 0 or a score like ‘32’ which happens to be
a previous [Write leaderboard Integer] call from a prior test. (I am definitely logged in successfully using iPhone->Settings).

I’ve even confirmed tests where I re-run the same app test (no changes)
an hour or so later and [Read Leaderboard Integer] returns 592 as expected.

Whenever I encounter issues like this I always do a test with the TappyChicken uproject
using my dev-provisioning-cert (to check if the issue is local to my app) but the result is generally the same
on both projects.

I don’t seem to have any control over when the correct highscore is returned so hope this is just a dev server
anomaly and doesn’t happen for live leaderboards.

Is this normal behaviour for Sandbox GameCenter Leaderboards?

Example Scenario:

The Leaderboard is currently showing a highscore of 592.

I do a new install on my iPad and play a test game. I get a new score of 87.
This score of 87 is correctly written to the GameCenter leaderboard because if I do a fresh install
of the same game on my iPhone it show the latest highscore of 87 before I even start the game.

So presumably everything is (99%) working as expected.

However, I don’t understand why [Read Leaderboard Integer] thinks the latest server highscore is 87 and not 592.
No doubt if I run the same test tomorrow morning then both devices will eventually show a highscore of 592.

I will confirm…

UPDATE:
High score after log in on both devices was still 87.
GameCenter leaderboard is still 592.
Yes, I could clear the leaderboard data, but that won’t give any closure as to why
the 87 is being returned instead of 592.

2

Hi ash22,

Doing a quick Google search shows that this is not uncommon and not tied specifically to UE4. The following link shows other developers discussing this problem, the last post on the following link in particular sounds very close to what you are experiencing:

iOS GameCenter leaderboard shows only my score in sandbox mode

The following link provides some troubleshooting steps:

Game Center is not showing scores in Leaders-board iPhone

If you feel that the issue you are describing is not related to the links above, please describe how you have set this up in UE4 so we can reproduce the issue on our end.

Thanks,

.

3

Thanks , the first link seems to describe my issue.
It sounds like switching GameCenter accounts on same device and/or not waiting
long enough for the server to update may confuse the highscore log.

If you feel that the issue you are describing is not related to the links above, please describe how you have set this up in UE4 so we can reproduce the issue on our end.

Not much to describe in any case, I’m using the same basic calls that
Tappy Chicken makes, i.e. the synchronous (blocking)[Show External Login UI]
and ensuring synchronous calls to [Read Leaderboard Integer] or [Write Leaderboard Integer] return success before attemping another call.