Game Center Achievements

[Coopman86]

I am just having an experience trying to use these two objects, I can't seem to get it to work correctly. Would it be possible for someone to walk me through this? Or at least point me to some kind of tutorial as my searching has yielded nothing. Thank you.

[mobichan]

The real hassle is actually setting up the acheivements in the Apple Dev Center. You need to read up on the documentation Apple provides on their site. Once you have done that, it is pretty straight forward. You just send and receive the ID numbers associated with them in the Dev Center Account. Just realize you need to set up your app before you can even begin to create leaderboards and acheivements. It is up to you to decide how the player is informed of the acheivement and also how you store the acheivement game-side.

[Verbage]

Achievement object is a single achievement. Achievements mean you can use it for many achievements. In the iTunes connect section under game center, you must setup each achievement with an identifier (I do game.achievement, ex: Minesweeper.FlagMode). Then, in-game, you must setup events or a chain of events that eventually cause the achievement to unlock, using the identifier as "minesweeper.FlagMode" as the first popup, then % completed as the second. If its a one-time achievement, put 100. If not, use a simple (current/totalneeded)*100 equation to get % completed towards goal (which shows up in the Game Center achievements popup).