Game Center just works great!

pedroluis5 · May 2013

How can i get my score?

local function onLoadScoreComplete(event)
   if event.errorCode ~= nil then
      print("error while loading players: "..event.errorDescription)
   else
		print("here are the details of scores:")
		print(event) -- how can i print?????????
   end
end
 
gamekit:addEventListener("loadScoresComplete", onLoadScoreComplete)
 
gamekit:loadScores("grp.MyGroup")

Where i find the gameKit api?

tks

pedroluis5 · May 2013

How can i get my ID of game center? I need this to get my score.

pedroluis5 · May 2013

already resolved everything

to get my id i use this in onAuthenticateComplete event

print(event.localPlayer.playerID)

and to get score

local function onLoadScoreComplete(event)
	if event.errorCode ~= nil then
	  print("error while loading players: "..event.errorDescription)
	else
		print("here are the details of scores:")
		for i=1, #event.scores do
			print(event.scores[i].playerID, event.scores[i].value,event.scores[i].category)
		end
	end
end

pedroluis5 · May 2013

just to help another users....here is a full example...

GameCenter = gideros.class(Sprite)
 
require "gamekit"
 
local myScore=0
local myID=0
local leaderboardID
 
local function onAuthenticateComplete(event)
   if event.errorCode ~= nil then
      print("error while authentication: "..event.errorDescription)
   else
      print("authentication successful. now loading friends...")
	  print(event.localPlayer.playerID)
	  myID = event.localPlayer.playerID
	  gamekit:loadFriends()
   end
end
 
local function onLoadFriendsComplete(event)
	if event.errorCode ~= nil then
	  print("error while loading friends: "..event.errorDescription)
	else
	  print("here are the friends:")
	  for i=1, #event.friends do
		 print(event.friends[i])
	  end
	  gamekit:loadPlayers(event.friends)
	end
end
 
local function onLoadPlayersComplete(event)
	if event.errorCode ~= nil then
	  print("error while loading players: "..event.errorDescription)
	else
	  print("here are the details of friends:")
	  for i=1, #event.players do
		 print(event.players[i].playerID, event.players[i].alias, event.players[i].isFriend)
	  end
	end
end
 
local function onLoadScoreComplete(event)
	if event.errorCode ~= nil then
	  print("error while loading players: "..event.errorDescription)
	else
		print("here are the details of scores:")
		for i=1, #event.scores do
			print(event.scores[i].playerID, event.scores[i].value)
			if (event.scores[i].playerID == myID) then
				myScore = event.scores[i].value
			end
		end
	end
end
 
--////////////////////Extern functions///////////////////////--
function GameCenter:Login()
	gamekit:authenticate()
end
 
function GameCenter:ShowLeaderBoard()
	gamekit:showLeaderboard(leaderboardID)
end
 
function GameCenter:PostScore(score)
	gamekit:reportScore(score,leaderboardID)
end
 
function GameCenter:LoadScore()
	gamekit:loadScores(leaderboardID)
end
 
function GameCenter:getMyScore()
	return(myScore)
end
 
function GameCenter:setLeaderboardID(id)
	leaderboardID = id
end
 
gamekit:addEventListener("authenticateComplete", onAuthenticateComplete)
gamekit:addEventListener("loadFriendsComplete", onLoadFriendsComplete)
gamekit:addEventListener("loadPlayersComplete", onLoadPlayersComplete)
gamekit:addEventListener("loadScoresComplete", onLoadScoreComplete)

Bill5567 · March 2014

I have added a leaderboard using the gamekit to my game. But when I open the leader board it says 'no items' rather than displaying a leader board with scores.

I have added the game via iTunes connect, and created a leader board.
I call
gamekit:authenticate()
gamekit:reportScore(score,leaderboardID)
gamekit:showLeaderboard(leaderboardID)

The leaderboardID matches the id I gave it in iTunes connect.

I have set the Bundle ID in Xcode to match the Bundle ID in iTunes connect.

Enabled game centre in Xcode and in iTunes connect.

Any idea what Im missing ?

Thanks

unlying · March 2014

Sometimes it shows me "no items" even for app that already has a hunreds of result. I'm not sure, but may be it is iOS bug. Try to close app and open leaderboard again.

ar2rsawseen · March 2014

It think it could show no items when it lost connection to server, or something like that (like no internet connection after authentication ? )

eezing · March 2014

I spent a good portion of yesterday dealing with the same issue.

My fix:

As mentioned in the apple developer docs, login to Game Center using an iTunes test account instead of normal user account. You can create an iTunes test account in iTunes Connect. You can switch users by logging out of Game Center in settings app, then on the following Game Center initiation you'll get a login dialog.

In the past with other SDK's, I've been able to test using my normal user iTunes account, but no dice here. Hope this resolves your issue.

Bill5567 · March 2014

Thank you, I will try and let you know how I get on.

Bill5567 · March 2014

Success.

I added a test account, and now I can see a highscore table.

thanks for the help.

eezing · March 2014

Cool, glad that worked for you.

jdbc · March 2014

Has anyone tested the feature "invite to friend" or "challenge" in Game Center? It is not available in GameCenter plugin but it could be included in this plugin.

ar2rsawseen · March 2014

@jdbc as far as I was reading about challenges, they do not require any specific code and should be automatically supported in games with leaderboards, did I miss something?

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