Implementing the StoreKit framework in SwiftUI — A quick disclaimer: This article is based on iOS 13 and Swift 5.x. I should also mention for beginners in this domain that the StoreKit framework can only be used if you are a registered Apple developer. I put together a more recent one here. StoreKit will not work on…

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 …

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. I don’t present these in any order, preference, or recommendation; I show them in…

Playing qubic against the computer — A continuation of the paper describing how to create a 3D game of tic-tac-toe. Verification Picking up where I left off, I needed to verify that I had all the winning lines. I added some more to the hit-winning method to show me all the possible lines I could come up…

A stab at creating the classic Qubic game — The tic-tac-toe game dates back a long time, with boards Wikipedia tells us turning up in places like ancient Egypt. It is a game that a company called Parker Brothers updated in 1964 with a 3D version called Qubic. In their game, you have a cube that is 4x4x4 squares…

An interactive 3D pie chart — Last month before Apple announced charts in the WWDC 2022, I wrote an article on creating 3D bar charts using SceneKit. It was entirely coincidental, I promise you. A paper that was well received. So it made perfect sense to give the same treatment to building 3D pie charts with…

A second stab at updating Apple’s SceneKit demo — Last week I published an article on rebuilding Apple’s WWDC 2017 SceneKit demo using SwiftUI. A paper that you can find here. Within that article, I rebuilt the controls for the game using SwiftUI, a semi-successful rebuild in which I made one fatal error. I split the SCNSceneRendererDelegate code into…

An attempt at updating Foxy 2 game code — Sadly, the last time Apple talked about SceneKit at any real length was in 2017, although it did make an appearance of a sort in 2018. In 2017 they did an excellent presentation with a rocking demo that looked really good, foxy2. Fortunately, the demo code is still available and…

Creating the missing component of the new Apple Charts library — I started this article before the WWDC 2022, an event with a sexy new framework announced by Apple called Charts. …