Initializing Class Properties In Swift - swift

Question

So I'm trying to create a Playground that functions as a 'presentation', meaning that I have multiple slides and it's interactive-ish. I'm new to Swift, so would really use some help.
This is my main code
import UIKit
import SpriteKit
import PlaygroundSupport
let frame = CGRect(x: 0, y: 0, width: 640, height: 480)
let view = SKView(frame: frame)
view.showsDrawCount = true
view.showsNodeCount = true
view.showsFPS = true
let scene = MainScene(size: CGSize(width: 640, height: 480))
view.presentScene(scene) //error here, explained below
PlaygroundPage.current.liveView = view
This is my MainScene.swift code -
import UIKit
import SpriteKit
import PlaygroundSupport
public class Slide: SKView {
public var title: SKLabelNode!
public var info: UITextView!
public func setter() {
self.title = SKLabelNode(fontNamed: "Chalkduster")
self.title.verticalAlignmentMode = .center
self.title.color = SKColor.white
self.title.position = CGPoint(x: frame.midX, y: 440)
let framer = CGRect(x: 40, y: 60, width: 560, height: 360)
self.info = UITextView(frame: framer)
self.info.font = UIFont(name: "Chalkduster", size: 20)
self.info.textAlignment = .center
self.info.textColor = UIColor.white
self.info.backgroundColor = UIColor.black
}
}
public class MainScene: SKScene {
public var button1 = SKSpriteNode(imageNamed: "Next")
public var button2 = SKSpriteNode(imageNamed: "Previous")
public var scene1: Slide?
public override func didMove(to view: SKView) {
backgroundColor = SKColor.black
scene1?.setter()
setScene1()
}
public func setScene1() {
scene1?.title = SKLabelNode(fontNamed: "Chalkduster")
scene1?.title.text = "Title."
scene1?.title.position = CGPoint(x: frame.midX, y: frame.midY)
scene1?.info.text = "Text."
addChild(scene1?.title)
addButtons()
}
public func addButtons() {
self.button1.position = CGPoint(x: 600, y: 40)
self.button2.position = CGPoint(x: 40, y: 40)
addChild(self.button1)
addChild(self.button2)
}
}
Basically, I was tying to setup multiple slides through functions that would change the previous slide's title/info. However, I thought it would be much better to have an SKView class defined for my slides in order to use SKTransition.
However, with my current code, I'm running into an execution interrupted error. Also, when I change stuff around, the error kind of followed me into either Expected Declaration or no Class Initializers for MainScene.swift.
Really, I just want to fix up my declaration of the class Slide and then use that class to make multiple slides.

Answer 1

Here's an example without SpriteKit. You should really review some basic Swift and UIKit lessons to get a good foundation on the language
import UIKit
import PlaygroundSupport
public class Slide: UIView {
public var title: UILabel
public var info: UITextView
required public override init(frame:CGRect) {
self.title = UILabel()
self.title.font = UIFont(name: "Chalkduster", size: 20)
self.title.textColor = UIColor.white
self.title.backgroundColor = UIColor.red
self.title.center = CGPoint(x: frame.midX, y: 440)
self.info = UITextView()
self.info.font = UIFont(name: "Chalkduster", size: 20)
self.info.textAlignment = .center
self.info.textColor = UIColor.white
self.info.backgroundColor = UIColor.blue
super.init(frame: frame)
addSubview(title)
addSubview(info)
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
public class MainScene: UIView {
public var scene1: Slide
required public override init(frame: CGRect) {
scene1 = Slide()
super.init(frame: frame)
scene1.title.text = "Title."
scene1.title.sizeToFit()
scene1.title.center = CGPoint(x: frame.midX, y: frame.midY - 20)
scene1.info.text = "Text."
scene1.info.sizeToFit()
scene1.info.center = CGPoint(x: frame.midX, y: frame.midY + scene1.title.frame.height + 20)
addSubview(scene1)
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
let frame = CGRect(x: 0, y: 0, width: 640, height: 480)
let view = UIView(frame: frame)
let scene = MainScene(frame: frame)
view.addSubview(scene)
PlaygroundPage.current.liveView = view