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Questions tagged [game-center]

The inner workings and use of Apple's GameCenter API in your apps.

1852 questions
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How do I send data from a GKPlayer to another in a match?

I would like to send NSData from a GKPlayer to another in a match. Therefore, the method sendDataToAllPlayers(_:withDataMode:error:) would be the most ideal. func sendDataToAllPlayers(data: Int, withDataMode Reliable: GKMatchSendDataMode, …
Cesare
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GameCenter: endTurnWithNextParticipants not advancing

In the sandbox environment, I'm having trouble advancing a turnbased match to the next player. Initial conditions: Player A and Player B on Device A and Device B, respectively. Both logged into the sandbox Both players can see each other's GC…
Thunk
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Several Leaderbords in sandbox mode

I have created 4 leaderboards for my app. One of them is default. I am using 3 different sandbox users. Scores are uploaded without errors. But there is a strange issue. Only default leaderboard contains all 3 scores from 3 users. Others contain 1…
mres
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While am I getting an error while setting up GKMatchmakerViewControllerDelegate in Swift?

I would like like to set up the matchmaking viewController of my game. To do so, I add the GKMatchmakerViewControllerDelegate delegate to my main UIViewController called Home, so that it looks like: class Home: UIViewController,…
Cesare
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don't know what I have to do to add Game Center leaderboard

I tried to add a Game Center leaderboard, first setting it on iTunes Connect but when I have to write the code in Xcode I don't know what I have to do. I want to open the leaderboard with a shake gesture and for that I will use this code in the…
Facundo Schiavoni
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reporting (small) achievements, then loading them returns none

I am reporting several GKAchievements with reportAchievements:withCompletionHandler: to Game Server and receive no errors. However, when I request them immediately afterwards with loadAchievementsWithCompletionHandler: I receive an empty array of…
Drux
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Missing Game Center Localisation choice for Irish language

I wish to use Game center with my ios app but the app is written in Irish. On Apple's documentation it states that you can choose a language for Game center but unfortunately the list of languages is very limited and does not include Irish. How…
Linda Keating
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Not finding players on Game Center. Am I testing my game wrong?

I have the game running on the Xcode simulator and also my iPhone. When I hit search they are both put into separate games, instead of one player joining the existing one. It is a turn based game, a player can take their first turn while Game Center…
George
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NSURLErrorDomain code=-1005 from GKLeaderboard loadScoresWithCompletionHandler:

I am receiving the following error in a callback to loadScoresWithCompletionHandler: Error Domain=NSURLErrorDomain Code=-1005 "The operation couldn’t be completed. (NSURLErrorDomain error -1005.)" Other calls to Game Center both before and…
Drux
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Game Center Unavailable Alert View not showing anymore?

In my previous SpriteKit games, when the player accesses the game center view controller, he/she is presented with an alert view saying "Game Center Unavailable. Player is not signed in" if he/she is not signed in to Game Center. This alert view…
aresz
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Game Center GKLeaderboard initializer failable?

I'm working on Game Center now. In Apple's Game Center Programming Guide (Listing 4-11), there is example code to retrieve the top scores of a leaderboard: GKLeaderboard *leaderboardRequest = [[GKLeaderboard alloc] init]; if (leaderboardRequest !=…
zavié
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How to present data provided by asynchronous call on UI in Swift?

I have manage to scrape up the following code to my GameCenterHelper-class. However I'm completely lost with Swift's blocks and completionHandlers. Could someone post a code example how to access the data provided by the asyncronous…
user3673836
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Maximum number of outstanding loadLeaderboardsWithCompletionHandler: from a single iOS client?

I am trying to fill a table that shows leaderboard sets along with their titles and numbers of contained leaderboards. (Similar to what the Game Center app also does.) In order to fill the table, I send off many…
Drux
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Make a JTextArea appear in my game view

I am developing a simple game where have to write words. So I taught to make a TextArea where the words typed goes, to this I need a scroll to can see all words. But i have a render method that have this: public void onRender(Graphics2D g) { …
user1258260
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Game Center Leaderboard scores delayed and wrong time

I'm currently testing various sandbox accounts for Game Center. I only use leaderboards from Game Center in my app. If I get a new high score, that new scores doesn't appear as soon as I go to look at leaderboards, it appears a few seconds and…
Bergy
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