NEW: Join my free 100 Days of SwiftUI challenge today! >>

Setting up

If you already read project 34 you'll know how much I love GameplayKit. In that project we used a new class called GKMinmaxStrategist to produce an AI that can win at Four in a Row games by looking ahead many moves in advance, but the truth is that we only scratched the surface of what GameplayKit can do.

In this technique project we're going to look at another aspect of GameplayKit that is hugely exciting: randomization. This will, I'm certain, strike you as a strange topic to choose: surely randomization is a solved problem – what makes it interesting enough to warrant discussion, never mind to dedicate a whole technique project?

It's true that generating random data – or at least the pseudo-random that most of us consider good enough – is old news, but the GameplayKit implementation goes a step further: Apple thought specifically about random needs for games, and has built a randomization system that I promise you're going to love, and going to use even when you're not making games.

Don't believe me? Fire up Xcode, create a new playground, and let's begin!

LEARN SWIFTUI FOR FREE I have a massive, free SwiftUI video collection on YouTube teaching you how to build complete apps with SwiftUI – check it out!

BUY OUR BOOKS
Buy Pro Swift Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift (Vapor Edition) Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Server-Side Swift (Kitura Edition) Buy Beyond Code

Was this page useful? Let us know!