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I have a Game Center game with two different entries in App Store Connect (i.e. two different Apps with different Bundle IDs, one for iOS and macOS). I want the game to handle multiplayer across both platforms. Do I need the "App Groups" entitlement for this? Or is it sufficient if both are listed in App Store Connect under App Information / Multiplayer Compatibility?
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this GKAccessPoint code fails on macOS. The AccessPoint button appears, but disappears when clicked -- no modal window. works fine on iOS but not macOS. what am i doing wrong?
import SwiftUI
import GameKit
struct AccessPoint: View {
var body: some View {
ZStack {
Color.clear
Text("GKAccessPoint")
}
.onAppear() {
GKLocalPlayer.local.authenticateHandler = { viewController, error in
GKAccessPoint.shared.isActive = true
}
}
}
}
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wondering if anyone can help clear up an error that i get when calling GKTurnBasedMatch.saveCurrentTurn. this error happens irregularly, but seems to be exacerbated by rapid successive calls to saveCurrentTurn.
Error Domain=GKErrorDomain Code=3 "The requested operation could not be completed due to an error communicating with the server." UserInfo={GKServerStatusCode=5002, NSLocalizedDescription=The requested operation could not be completed due to an error communicating with the server., NSUnderlyingError=0x600002e1f480 {Error Domain=GKServerErrorDomain Code=5002 "status = 5002, Unexpected game state version expectedGameStateVersion='d9a7ea8c-f1de-4d35-8607-bc3c9bc1ebda' foundGameStateId='fc0f793d-4b88-4594-9b52-22ce2c1ae4fc' sessionId='1418932146:390cf165-49fc-40fb-aba7-08ff452d8500'" UserInfo={GKServerStatusCode=5002, NSLocalizedFailureReason=status = 5002, Unexpected game state version expectedGameStateVersion='d9a7ea8c-f1de-4d35-8607-bc3c9bc1ebda' foundGameStateId='fc0f793d-4b88-4594-9b52-22ce2c1ae4fc' sessionId='1418932146:390cf165-49fc-40fb-aba7-08ff452d8500'}}}
is there a way to avoid this error?
here is a unit test that demonstrates the above error -- error happens irregularly but frequently up to 20% of the time.
let total:Int = 100
var fail:Int = 0
func test_StressTest_saveCurrentTurn() {
guard let match = GKTurnBasedMatch_loadMatches()?.first else { return }
for i in 0..<total {
GKTurnBasedMatch_saveCurrentTurn(match, Data([UInt8(i)]))
}
print("failed \(fail) times out of \(total) total")
}
func GKTurnBasedMatch_saveCurrentTurn(_ match:GKTurnBasedMatch, _ payload:Data) {
let expectation = self.expectation(description:"expectation")
print("\(Self.self) \(#function)")
match.saveCurrentTurn(withMatch:payload) { error in
if let error = error {
print("\(error)")
self.fail += 1
}
expectation.fulfill()
}
wait(for:[expectation], timeout: 5)
}
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i'm trying to use exchanges and localization. i'm getting different results on iOS versus on macOS.
i have the following line in my Localizable.strings (English) file
"emote_message_hello" = "hello";
here's my sendExchange function:
gkTurnBasedMatch.sendExchange(to:[opponent],
data:Data(),
localizableMessageKey:"emote_message_hello",
arguments:[],
timeout:TimeInterval(1))
and here is my receivedExchangeRequest function
func player(_ player:GKPlayer, receivedExchangeRequest exchange:GKTurnBasedExchange, for gkTurnBasedMatch: GKTurnBasedMatch) {
print("\(exchange.message)")
}
on macOS this outputs "hello". yet the same code on iOS outputs "emote_message_hello". in other words it appears that macOS is automatically localizing the string, while iOS is not.
am i doing something wrong or is this a bug?
i have a macOS app that uses Game Center. how do i make it available to beta testers?
i understand that TestFlight is available to developers running macOS v12. but my testers are normal users who are running macOS v11.
my first thought was to sign with a Developer ID and let testers download the app. except that Game Center is not supported in Developer ID apps. Can I sign and upload to App Store Connect and somehow offer the binary to testers?
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is it possible to write unit tests that involve game center authentication and match methods? this would help a great deal with debugging. or do i need a mock window/view of some kind for authenticateHandler to trigger?class GameCenterTests: XCTestCase {
override func setUp() {
super.setUp()
GKLocalPlayer.local.authenticateHandler = { viewController, error in
...
}
}
func test_EndTurn() {
GKTurnBasedMatch.load(withID:id) { gkTurnBasedMatch, error in
...
}
}
}
Fault.