O lenei tusiga o loʻo faʻamatalaina le faʻagasologa o le fatuina o se taʻaloga aʻoaʻoga faigofie e manatua ai ou te fiafia tele i ai. E ese mai le lelei ia te ia lava, o le ae aoao atili e uiga i vasega Swift ma tulafono aoe alu. Ae tatou te lei amataina, ia tatou malamalama i le taaloga lava ia.
Matou te faʻamanatu atu ia te oe: mo tagata faitau uma o le "Habr" - o se faʻaitiitiga o 10 rubles pe a lesitala i soʻo se vasega Skillbox e faʻaaoga ai le code promotional "Habr".
Ua fautuaina e Skillbox: A'oa'oga i luga ole laiga .
Fa'afefea ona ta'alo Memory Card
E amata le ta'aloga i se fa'aaliga o se seti o kata. E taooto fa'asaga i lalo (fa'atatau, ata i lalo). A e kiliki i luga o se tasi, o le ata e matala mo ni nai sekone.
O le galuega a le tagata taalo o le su'eina lea o kata uma e tutusa ata. Afai, a uma ona tatala le kata muamua, e te liliu i luga le lona lua ma fetaui ata, o loʻo matala uma kata e lua. Afai e le fetaui, ona toe tapuni lea o kata. O le sini ia tatala mea uma.
Fa'atulagaina o le poloketi
Ina ia fatuina se faʻamatalaga faigofie o lenei taʻaloga e te manaʻomia vaega nei:
- Tasi Pule: GameController.swift.
- Tasi Vaaiga: CardCell.swift.
- Lua Fa'ata'ita'iga: MemoryGame.swift ma Card.swift.
- Main.storyboard e faʻamautinoa ai o loʻo avanoa le seti atoa o vaega.
Tatou amata i le vaega sili ona faigofie o le taaloga, o kata.
Card.swift
O le fa'ata'ita'iga kata o le a iai ni meatotino se tolu: id e fa'ailoa ai mea ta'itasi, o se fesuiaiga boolean e fa'aalia e fa'amaonia ai le tulaga o le kata (natia pe tatala), ma artworkURL mo ata i luga o kata.
class Card {
var id: String
var shown: Bool = false
var artworkURL: UIImage!
}E te mana'omia fo'i metotia nei e pulea ai fegalegaleai a tagata fa'aoga ma fa'afanua:
Metotia mo le faʻaalia o se ata i luga o se kata. O iinei tatou te toe setiina uma meatotino i le faaletonu. Mo id, matou te fatuina se id faʻafuaseʻi e ala i le valaʻau i le NSUUIS().uuidString.
init(image: UIImage) {
self.id = NSUUID().uuidString
self.shown = false
self.artworkURL = image
}Metotia mo le fa'atusatusaina o kata ID.
func equals(_ card: Card) -> Bool {
return (card.id == id)
}Metotia e fai ai se kopi o kata taitasi - ina ia maua se numera tele o mea tutusa. O lenei metotia o le a toe faʻafoʻi ai le kata e tutusa tau.
func copy() -> Card {
return Card(card: self)
}
init(card: Card) {
self.id = card.id
self.shown = card.shown
self.artworkURL = card.artworkURL
}Ma e tasi le isi auala e manaʻomia e faʻafefe ai kata i le amataga. O le a matou faia o se faʻaopoopoga o le vasega Array.
extension Array {
mutating func shuffle() {
for _ in 0...self.count {
sort { (_,_) in arc4random() < arc4random() }
}
}
}Ma o le faʻatinoga lea o le tulafono mo le faʻataʻitaʻiga Card ma meatotino uma ma metotia.
class Card {
var id: String
var shown: Bool = false
var artworkURL: UIImage!
static var allCards = [Card]()
init(card: Card) {
self.id = card.id
self.shown = card.shown
self.artworkURL = card.artworkURL
}
init(image: UIImage) {
self.id = NSUUID().uuidString
self.shown = false
self.artworkURL = image
}
func equals(_ card: Card) -> Bool {
return (card.id == id)
}
func copy() -> Card {
return Card(card: self)
}
}
extension Array {
mutating func shuffle() {
for _ in 0...self.count {
sort { (_,_) in arc4random() < arc4random() }
}
}
}Faaauau loa.
O le faʻataʻitaʻiga lona lua o MemoryGame, o iinei matou te setiina ai le 4 * 4 grid. O le fa'ata'ita'iga o le ai ai meatotino e pei o kata (se fa'asologa o kata i luga o se fa'asologa), o se fa'aaliga fa'aalia ma kata ua uma ona tatala, ma le boolean variable isPlaying e siaki ai le tulaga o le ta'aloga.
class MemoryGame {
var cards:[Card] = [Card]()
var cardsShown:[Card] = [Card]()
var isPlaying: Bool = false
}Matou te manaʻomia foʻi le atinaʻeina o auala e pulea ai fegalegaleaiga a tagata faʻaoga ma le faʻasologa.
O se auala e fa'afefeteina ai kata i se fa'asologa.
func shuffleCards(cards:[Card]) -> [Card] {
var randomCards = cards
randomCards.shuffle()
return randomCards
}Metotia mo le fatuina o se taaloga fou. O iinei tatou te taʻua ai le auala muamua e amata ai le faʻasologa muamua ma faʻauluina le fesuiaiga isPlaying i le moni.
func newGame(cardsArray:[Card]) -> [Card] {
cards = shuffleCards(cards: cardsArray)
isPlaying = true
return cards
}Afai tatou te fia toe amata le taaloga, ona matou setiina lea o le isPlaying fesuiaiga i le sese ma aveese le uluai faatulagaga o kata.
func restartGame() {
isPlaying = false
cards.removeAll()
cardsShown.removeAll()
}Metotia mo le fa'amaonia o kata kiliki. Fa'amatalaga e uiga ia te ia mulimuli ane.
func cardAtIndex(_ index: Int) -> Card? {
if cards.count > index {
return cards[index]
} else {
return nil
}
}O se auala e toe faʻafoʻi ai le tulaga o se kata faʻapitoa.
func indexForCard(_ card: Card) -> Int? {
for index in 0...cards.count-1 {
if card === cards[index] {
return index
}
}
return nil
}Siaki le tausisia o le kata filifilia ma le tulaga masani.
func unmatchedCardShown() -> Bool {
return cardsShown.count % 2 != 0
}O lenei metotia e faitau le elemene mulimuli i le **cardsShown** array ma toe faafoi mai le kata e le fetaui.
func didSelectCard(_ card: Card?) {
guard let card = card else { return }
if unmatchedCardShown() {
let unmatched = unmatchedCard()!
if card.equals(unmatched) {
cardsShown.append(card)
} else {
let secondCard = cardsShown.removeLast()
}
} else {
cardsShown.append(card)
}
if cardsShown.count == cards.count {
endGame()
}
}Main.storyboard ma GameController.swift
Main.storyboard e pei o lenei:
I le taimi muamua, e tatau ona e setiina le taaloga fou e pei o le viewDidLoad i le pule, e aofia ai ata mo le faʻasologa. I le taʻaloga, o nei mea uma o le a faʻatusalia e le 4 * 4 collectionView. Afai e te le'i masani ile collectionView, o lea .
O le a matou faʻatulagaina le GameController e avea ma aʻa aʻa o le talosaga. O le GameController o le ai ai se collectionView lea o le a matou taʻua o se IBOutlet. O le isi faʻamatalaga o le IBAction onStartGame() button, o le UIButton lea, e mafai ona e vaʻai i ai i le laupapa tala e taʻua o PLAY.
O sina mea itiiti e uiga i le faʻatinoina o pule:
- Muamua, matou te amataina ni mea autu se lua - o le faasologa: taaloga = MemoryGame(), ma se seti o kata: kata = [Card]().
- Matou te setiina suiga muamua e pei o viewDidLoad, o le auala muamua lea e taʻua aʻo taʻavale le taʻaloga.
- collectionView ua seti i le natia ona o kata uma e natia seia oomi e le tagata faaaoga le PLAY.
- O le taimi lava matou te oomiina ai le PLAY, o le onStartGame IBAction vaega e amata, ma matou seti le collectionView isHidden meatotino i le sese ina ia mafai ona iloa kata.
- O taimi uma e filifili ai e le tagata faʻaoga se kata, e valaʻau le didSelectItemAt method. I le auala matou te taʻua didSelectCard e faʻatino ai le taʻaloga autu.
O le faʻatinoga mulimuli lea o GameController:
class GameController: UIViewController {
@IBOutlet weak var collectionView: UICollectionView!
let game = MemoryGame()
var cards = [Card]()
override func viewDidLoad() {
super.viewDidLoad()
game.delegate = self
collectionView.dataSource = self
collectionView.delegate = self
collectionView.isHidden = true
APIClient.shared.getCardImages { (cardsArray, error) in
if let _ = error {
// show alert
}
self.cards = cardsArray!
self.setupNewGame()
}
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
if game.isPlaying {
resetGame()
}
}
func setupNewGame() {
cards = game.newGame(cardsArray: self.cards)
collectionView.reloadData()
}
func resetGame() {
game.restartGame()
setupNewGame()
}
@IBAction func onStartGame(_ sender: Any) {
collectionView.isHidden = false
}
}
// MARK: - CollectionView Delegate Methods
extension GameController: UICollectionViewDelegate, UICollectionViewDataSource {
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return cards.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CardCell", for: indexPath) as! CardCell
cell.showCard(false, animted: false)
guard let card = game.cardAtIndex(indexPath.item) else { return cell }
cell.card = card
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let cell = collectionView.cellForItem(at: indexPath) as! CardCell
if cell.shown { return }
game.didSelectCard(cell.card)
collectionView.deselectItem(at: indexPath, animated:true)
}
}Se'i o tatou talanoa la'itiiti e uiga i tulafono taua.
Maliega
O le galulue faatasi ma protocols o le autu lea o polokalame Swift. Protocols e maua ai le tomai e faʻamatala ai tulafono mo se vasega, fausaga, poʻo le faʻasologa. O lenei mataupu faavae e mafai ai ona e tusia code modular ma extensible. O le mea moni, o se mamanu lea ua uma ona matou faʻatinoina mo le aoinaView i GameController. Se'i fai la tatou lava fa'aliliuga. O le syntax o le a pei o lenei:
protocol MemoryGameProtocol {
//protocol definition goes here
}Matou te iloa o se protocol e mafai ai ona matou faʻamalamalamaina tulafono poʻo faʻatonuga mo le faʻatinoina o se vasega, o lea seʻi o tatou mafaufau i mea e tatau ona i ai. E te mana'omia le fa atoa.
- Taaloga amata: memoryGameDidStart.
- E tatau ona e fa'asaga i lalo le kata: memoryGameShowCards.
- E tatau ona e fa'asaga i lalo le kata: memoryGameHideCards.
- Ta'aloga fa'ai'uga: memoryGameDidEnd.
O auala uma e fa e mafai ona faʻatinoina mo le vasega autu, o le GameController.
memoryGameDidStart
A fa'atino lenei metotia, e tatau ona amata le ta'aloga (oomi le tagata fa'aoga PLAY). O iinei o le a matou toe faʻapipiʻi ai mea e ala i le valaʻau collectionView.reloadData(), lea e faʻafefe ai kata.
func memoryGameDidStart(_ game: MemoryGame) {
collectionView.reloadData()
}memoryGameShowCards
Matou te taʻua lenei metotia mai le collectionSDViewSelectItemAt. Muamua o loʻo faʻaalia ai le kata filifilia. Ona siaki lea pe i ai se kata e le mafaatusalia i totonu o kata Fa'aalia fa'asologa (pe a le numera o kata Fa'aalia e ese). Afai ei ai se tasi, o le kata filifilia e faʻatusatusa i ai. Afai e tutusa ata, e fa'aopoopo uma kata i kata Fa'aali ma fa'asaga i luga. Afai e ese, o le kata e tu'u ai kata Fa'aali ma fa'asaga uma i lalo.
memoryGameHideCards
Afai e le fetaui ia kata, e ta'ua lea auala ma e natia ata o kata.
fa'aalia = sese.
memoryGameDidEnd
A ta'ua lea metotia, o lona uiga ua uma ona fa'aalia kata uma ma o lo'o i totonu o le lisi fa'aalia: cardsShown.count = cards.count, o lea ua uma ai le ta'aloga. O le metotia e taʻua faʻapitoa pe a uma ona matou valaʻau endGame() e seti le isPlaying var i le sese, a maeʻa ona faʻaalia le feʻau faʻaiʻuga. Fa'apea fo'i le alertController e fa'aaogaina e fai ma fa'ailoga mo le pule. ua vala'au viewDidDisappear ma toe setiina le ta'aloga.
O le mea lenei e foliga uma i GameController:
extension GameController: MemoryGameProtocol {
func memoryGameDidStart(_ game: MemoryGame) {
collectionView.reloadData()
}
func memoryGame(_ game: MemoryGame, showCards cards: [Card]) {
for card in cards {
guard let index = game.indexForCard(card)
else { continue
}
let cell = collectionView.cellForItem(
at: IndexPath(item: index, section:0)
) as! CardCell
cell.showCard(true, animted: true)
}
}
func memoryGame(_ game: MemoryGame, hideCards cards: [Card]) {
for card in cards {
guard let index = game.indexForCard(card)
else { continue
}
let cell = collectionView.cellForItem(
at: IndexPath(item: index, section:0)
) as! CardCell
cell.showCard(false, animted: true)
}
}
func memoryGameDidEnd(_ game: MemoryGame) {
let alertController = UIAlertController(
title: defaultAlertTitle,
message: defaultAlertMessage,
preferredStyle: .alert
)
let cancelAction = UIAlertAction(
title: "Nah", style: .cancel) {
[weak self] (action) in
self?.collectionView.isHidden = true
}
let playAgainAction = UIAlertAction(
title: "Dale!", style: .default) {
[weak self] (action) in
self?.collectionView.isHidden = true
self?.resetGame()
}
alertController.addAction(cancelAction)
alertController.addAction(playAgainAction)
self.present(alertController, animated: true) { }
resetGame()
}
}
O le mea moni, pau lava lena. E mafai ona e fa'aogaina lenei poloketi e fai ai sau lava fa'aaliga o le ta'aloga.
Manuia coding!
Ua fautuaina e Skillbox:
- Kosi fa'ata'ita'i .
- Fa'aoga kosi i luga ole laiga .
- Lua tausaga a'oa'oga .
puna: www.habr.com