Hi all, I'm following a tutorial on SceneKit, which sets up a few nodes, a camera, and some keyboard capturing to let the user arrow around the sceene. The author of the code says it works on his mac

I have a general question about memory management of a panel shown as a sheet. As a general design pattern, I often have a class method that returns a new instance of a NSWindowController subclass

Here we go again… another memory management issue. I have a fairly simple situation where I instantiate a window controller (NSWindowController subclass), which loads its window from a nib file. Th

Hi All, In the following code, does it *need* to use the dispatch_async function? dispatch_async(dispatch_get_main_queue(), ^{ if ([[self delegate] respondsToSelector:@selector(gameCenterManager:a

Hi, I’m trying to understand how to use the GKTurnBasedMatch facility in Game Kit. From reading the documentation, I’m not quite sure how make it work with the rules of the game I am developing.

Hi all, I have a property "velocity" that returns a custom object representing a 2D vector. That vector object has properties "x" and "y". From time to time, the value of velocity to be displayed wil

I have an application that presents a window to the user which floats above all other windows. It must be running at all times when any user is logged in. I achieve this with a launchd.plist ins

Hi All, Using the Simulator, how can I log off from Game Centre? I’ve logged on ok once, but now I want to test it again from not being logged in. Thanks a lot Dave

Hi All, I’m developing a game and want to use Game Centre, the game is for 2 to 9 Human or AI players, by AI I mean that that program itself makes a move on behalf of one or more AI Players. So, in

Hi, I’m getting a warning on this method: [GKPlayer loadPlayersForIdentifiers:theMatch.playerIDs withCompletionHandler:^(NSArray* thePlayerArray,NSError* theErrorInfo) It says to replace it with “

Hi, So my to-do list is almost done, and I have one problem, I imbedded my table view controller in a navigation controller and all is well, until I try to add a row to the table view, o we have a pro

I just switched on: Implicit ownership types on out parameters = CLANG_WARN_OBJC_EXPLICIT_OWNERSHIP_TYPE and now I get complaints about stuff like: - (BOOL)isNiceAndHas: (NSArray **)friends; Method

Hi All, I have a Question about GKSession and about turn based games in GC in general. Firstly, do I *need* to use GKSession in order to create a Turn Based Game? If so, then it looks like I will al

On Sierra, I’m getting the following posted when I open a window that hosts a drawer: 2017-07-18 10:06:31.546972+1000 Ortelius 2[10080:3577648] [General] ERROR: Setting <NSOutlineView: 0x10182d140> a

This works: - (void)showPreferences: (NSMenuItem *)sender; { (void)sender; // if ( self.prefController == nil ) // this line should not be commented out { self.prefController = [ [ NSWindowControll

I have two apps: one in Objective-C, the other one in Swift. Both have: PrefWindow.xib PrefWindow.xib (Base) PrefWindow.strings (German) … The problem is: 1. The Objective-C version just ignores P

On certain iDevices, we have a UIAlertController that refuses to display the text of the only button, the OK button. This has been a problem for the past year and of course it only appears in the ale

Hi, There used to a a web page that had a list of all the Apple Sample Apps, does anyone know if this still exists and if so, where? I can’t seem to find it any more. Thanks a lot All the Best Dav

Hi All, I’m about to add some animations to my game and was wondering if any could give me some advice on the implementation given my App. This is for iOS Landscape only at present but I am intending

My iOS app has 2 custom UTIs declared in the Imported UTIs section, and 3 Document Types (those 2, plus pdf). When I try to share a file (doesn't matter if the URL's UTI is one of the custom types or