Achievements with different users

[Renatos]

Basically I have on my game the achievements that are triggered when you reach a certain goal. It sends to apple, then saves a global value stating you've achieved that goal, so it doesn't keep firing to apple all the time. BUT if I switch users on game center, the achievements won't fire up simply because they have been fired up by the other user, how did you get that to work on your games? I was wondering if on the ini object, using the group name as the player ID so that is different from each user, but I am afraid of that not working, I'd love to get your advice on this matter...



thanks in advance

[Olivier]

I'm just reading Apple's doc and the MMF Help about achievements. From my understanding you should not need to use a Global Value and save it into a INI file. If you use such a custom system, then your game cannot make the distinction between different players (switching accounts) on the same device. Unless if you use a different group name per player in the INI file like you wrote.
I think that the safest and easiest way to know if an achievement has been completed, is to retrieve its completion percentage via the expression of the "Game Center Achievement" object. Like it's stated in the object's Help, for that object to function the local player must have been authenticated. That player authentication guarantees that different players each have their own achievements progress.

[Renatos]

Makes sense. I was going to save it under a different Group per user, but I can`t get that to work. I was going to set the group name to the user ID but at least it fails to wrok with me. I will do as you said, and just get the percentage of the achievement.

Thank you Oliver