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 shows even if I don't have it in my code. I think it is built-in.
Currently I am working on a new project but am using Swift and Xcode 6.1 this time (as opposed to Objective C and Xcode 6.0).
Now, I noticed that this alert does not show anymore when the player is not signed in when accessing the game center view controller. Did Apple remove it? Do I have to manually code that now?