139 lines
3.9 KiB
Swift
139 lines
3.9 KiB
Swift
//
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// ViewController.swift
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// ESP Tester
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//
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// Created by Brian Sipple on 3/5/19.
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// Copyright © 2019 Brian Sipple. All rights reserved.
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//
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import UIKit
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class HomeViewController: UIViewController {
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@IBOutlet var cardContainer: UIView!
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enum CardState {
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case allFlat
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case flipping
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}
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// MARK: - Instance Properties
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var currentCardState = CardState.allFlat
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var cardViewControllers: [CardViewController] = []
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lazy var cardPositions = makeCardPositions()
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lazy var cardImages = makeCardImages()
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// MARK: - Lifecycle
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override func viewDidLoad() {
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super.viewDidLoad()
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// Do any additional setup after loading the view, typically from a nib.
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loadCards()
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}
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// MARK: - Methods
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@objc func loadCards() {
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removeCardsInView()
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cardImages.shuffle()
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for (index, position) in cardPositions.enumerated() {
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let cardViewController = CardViewController()
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let cardImage = cardImages[index]
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cardViewController.delegate = self
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// use view controller containment...
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addChild(cardViewController)
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// ...AND add the VC's view to our container view
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cardContainer.addSubview(cardViewController.view)
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cardViewController.didMove(toParent: self)
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cardViewController.view.center = position
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cardViewController.frontImageView.image = cardImage
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// if the new card is a star, mark is as "correct"
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if cardImage.accessibilityIdentifier == "star" {
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cardViewController.isCorrect = true
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}
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cardViewControllers.append(cardViewController)
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}
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currentCardState = .allFlat
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}
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func removeCardsInView() {
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for card in cardViewControllers {
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card.view.removeFromSuperview()
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card.removeFromParent()
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}
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cardViewControllers.removeAll(keepingCapacity: true)
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}
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// MARK: - Event handling
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func cardTapped(_ tappedCard: CardViewController) {
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guard currentCardState == .allFlat else { return }
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currentCardState = .flipping
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for card in cardViewControllers {
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if card == tappedCard {
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card.flipToReveal()
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card.perform(#selector(card.fadeAway), with: nil, afterDelay: 1)
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} else {
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card.fadeAway()
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}
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}
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perform(#selector(loadCards), with: nil, afterDelay: 2)
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}
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// MARK: - Private functions
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private func makeCardPositions() -> [CGPoint] {
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let cardWidth = Dimension.Card.width
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let cardHeight = Dimension.Card.height
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let xSpacing = 10
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let ySpacing = 10
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var positions: [CGPoint] = []
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for row in 0...1 {
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let yPos = (cardHeight / 2) + (cardHeight * row) + (ySpacing * row) + 15
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positions += [
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CGPoint(x: (cardWidth / 2) + (cardWidth * 0) + (xSpacing * 1) + 15, y: yPos),
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CGPoint(x: (cardWidth / 2) + (cardWidth * 1) + (xSpacing * 2) + 15, y: yPos),
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CGPoint(x: (cardWidth / 2) + (cardWidth * 2) + (xSpacing * 3) + 15, y: yPos),
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CGPoint(x: (cardWidth / 2) + (cardWidth * 3) + (xSpacing * 4) + 15, y: yPos),
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]
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}
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return positions
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}
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private func makeCardImages() -> [UIImage] {
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return [
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"Circle", "Circle", "Cross", "Cross", "Lines", "Lines", "Square", "Star"
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].map {
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let image = UIImage(named: "card\($0)")!
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image.accessibilityIdentifier = $0
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return image
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}
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}
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}
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