Stack Overflow
Stack Overflow

Questions tagged [game-center]

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

1852 questions
18
votes
1 answer

Problems with GKLocalPlayer and saveGameData

I want to save game data with GKLocalPlayer and saveGameData method. [localPlayer saveGameData:playerData withName:@"SolarFlares" completionHandler:^(GKSavedGame *savedGame, NSError *error) { if (savedGame != nil) { NSLog(@"Player data…
user3032732
  • 221
  • 2
  • 4
17
votes
1 answer

Game Center Challenges in iOS 10

I've implemented Game Center features like achievements and leaderboards, and now I'm working on the challenges. I was under the impression that I didn't have to add any additional code - if I had achievements or leaderboards, players would be able…
claassenApps
  • 1,137
  • 7
  • 14
17
votes
5 answers

Removing a GKTurnBasedMatch which is in an invalid state

I am doing some experimentation to try to learn about GameKit and I made a simple game and an interface which lists my player's matches. I am trying to add the ability to remove games using the removeWithCompletionHandler: method on the match, but I…
Zach
  • 2,441
  • 1
  • 16
  • 20
17
votes
3 answers

IOS Game Center Achievement Upload

Is anybody aware of a way of uploading all the Achievements into Game Center within iTunes Connect? I have about 30 achievements in 10 languages. That's a whole bunch of clicking, cutting and pasting to get the data from my source file into…
Nosy Wombat
  • 173
  • 1
  • 6
16
votes
6 answers

Remove glossy from my game icon in GameCenter app

How to do it? UIPrerenderedIcon removes glossiness only for springboard icons.
brigadir
  • 6,874
  • 6
  • 46
  • 81
16
votes
1 answer

iOS Development: Strange problem with authenticating Game Center user

I'm building an iPhone game that supports Game Center (GC). When the app launches, I try to authenticate the local player... if([GKLocalPlayer localPlayer].authenticated == NO) { [[GKLocalPlayer localPlayer]…
BeachRunnerFred
  • 18,070
  • 35
  • 139
  • 238
16
votes
3 answers

Game Center Achievement Issue

I have recently decided to add achievements to a game that has been on the App Store for years now, and I'm having issues with making them work. I am using the following code to post the achievements: GKAchievement *achievement = [[GKAchievement…
user513064
16
votes
4 answers

Testing Multiplayer Game Center game

I've read varying/conflicting answers, and I need some definite answers. I'm currently at the start of developing a turn-based multiplayer game with Game Center. I've been following a tutorial @rayWenderlich.com, and I've got the player being…
Phil
  • 2,995
  • 6
  • 40
  • 67
15
votes
5 answers

Avoid Leaderboard Hacking on Game Center

Has anyone found a way to avoid leaderbaord hacking on Game Center or at least make it more complicated? You can see a video of HackCenter, a Cydia app that lets you submit any score you want here: Hack Center Even though that application is not…
elibud
  • 8,119
  • 2
  • 21
  • 21
14
votes
6 answers

the game is not recognized by game center

Hi I am trying to add game center to my iphone app. I have done the following steps 1) I have added an app to my itnuesAccount 2) I assigned the Bundle ID as net.myCompany.myGameCenter 3) I am using the same "net.myCompany.myGameCenter" as Bundle…
yunas
  • 4,143
  • 1
  • 32
  • 38
14
votes
4 answers

Setting up third-party server to interact with Game Center

I'm thinking of adding a feature to my iOS game to allow players to create their own game levels, share them with other players, rate them, etc. There'd be a public repository of user-created levels, sortable by creation date, rating, difficulty, or…
Andrew Clark
  • 721
  • 7
  • 15
12
votes
2 answers

Update a score already submitted to Game Center

Right now I am working on a Black Jack game for iOS and would like to have a leader board that shows which players currently have the most "money". So if they get a high score and then lose "money" it would update their high score to match the users…
Skyler Saleh
  • 3,961
  • 1
  • 22
  • 35
12
votes
7 answers

"This game is not recognized by game center." iPhone Development

There are already a couple of questions on this but I followed their steps to solve it and it doesn't seem to work for me. Here's what I have done: 1. I double checked to have the bundle identifier in the xcode project to be the exact same as the…
ninjaneer
  • 6,951
  • 8
  • 60
  • 104
12
votes
7 answers

GameCenter login alert

In a game I am developing using GameCenter, I want to handle the following scenario: the user starts up the game. He is shown the system alert that prompts him to log on GameCenter. He ignores it for now. after a while, the user wants to log in…
Alex
  • 919
  • 2
  • 7
  • 16
12
votes
1 answer

Correct response to remote player quit in Game Center

I have a turn-based match with two participants, A and B. It is currently A's turn. B quits out of turn by calling: [match participantQuitOutOfTurnWithOutcome:GKTurnBasedMatchOutcomeQuit ... etc. As far as A's Game Center app is concerned, the…
jnic
  • 8,695
  • 3
  • 33
  • 47
1
2
3
…
99 100