Implementing new features in StoreKit — Before you read this story, note an updated version [as in code] can be found here. Subscriptions, Receipts, and StoreKit in iOS 14 The gold standard of in-app purchases and subscriptionsmedium.com Much of the buzz at WWDC2020 was given over to SwiftUI 2.0 and ARKit, so you should forgive yourself for missing a seismic change to the StoreKit framework — a change that will make…

A look at some different ways to link a class with a SwiftUI interface — I was playing around with SpriteKit, and it occurred to me that it might be a good exercise to remind myself of how many different ways I could link my SwiftUI code with my SpriteKit scene/class. …

Continuing my investigation into SceneKit — A while back, I wrote a piece about the Swift Algorithms library. A set of code primitives developed by Apple that — well — one day may make it into the core Swift language. Implementations that are probably better pieces of code than you or I would have time to…

Using a fantastic scene from The Alien series This month in 1979, Sigourney Weaver starred in a lead role for a sci-fi horror movie that would create a franchise of films spanning three decades, the Alien series. During the movie, there is a sequence, just 30 seconds of it, that…

Continuing an investigation into SceneKit — The other week, I published this article, a piece looking at quaternions in SceneKit. Within it, I published a very short snippet of code that — well, could almost have come out of Kernighan & Ritchie’s classic C guide, a rough edge in the framework, I feel. Sorry to say…

A journey through the pitfalls of managing the camera — At the end of an article, I published the other week, I gave an example of the gold standard for doing rotations in SceneKit, indeed in most computer graphics coding, namely Quaternions. In this article, I want to take a closer/practical look at using them to manage an equally perplexing…

A look at the different ways to rotate objects in SceneKit within SwiftUI — As with many constructs in coding, there is usually more than one way to do the same thing. Sometimes the differences between them are apparent, a loop the classic case in hand. You can have a repeat/while, a do/while or a for each loop. Of course, the framework within SceneKit…

A how-to for building the popular chess board game — Continuing a journey to investigate SceneKit & SwiftUI, I thought I might try another classic. The goal of this article is to build a 3D chess game. Models I started looking at SceneKit and SwiftUI with a model. …

Part 3 of a series on building a Rubik cube — The final challenge — the goal to try to introduce a more natural way of solving your Rubik cube using gestures and not buttons, as I had ended up with in the last piece. A long journey that took me more than a week to get right. …