Written by Amy
on 

스위프트 베이스볼 게임 만들기 v0.4

v0.4 버전에서는 Enum, Computed Property, Property Observer 사용을 다듬고, 유저의 부적절한 행동(중복 숫자 입력, 3자리 이상 숫자 입력 등)에 대한 안내 문구를 강화하였습니다.

게임 연산 로직을 담은 Smart Brain

class SmartBrain {
    
    private enum PickCase {
        case allStrike
        case ballAndStrike(strike: Int, ball: Int)
        case out
        func printString() -> String { // 라벨 출력 용도의 메소드
            switch self {
            case .out:
                return "3 Out 💩"
            case .ballAndStrike(strike: let s, ball: let b):
                return "\(s) Strike, \(b) Ball"
            case .allStrike:
                return "정답이에요👌🏻👏🏻♥️"
            }
        }
    }
    
    func compareCheck(arr1: [Int], arr2: [Int], inputStr: String) -> (SL: String, HL: String) {
        var strike: Int = 0
        var ball: Int = 0
        var caseCheck: PickCase
        
        for i in 0..<arr1.count {
            if arr1[i] == arr2[i] {
                strike += 1
            }else if arr2.contains(arr1[i]) {
                ball += 1
            }
        }
        
        // Property Observer
        var historyStr: String?
        var displayStr: String = "" {
            didSet {
                historyStr = inputStr + " 👉🏻 " + displayStr + "\n"
            }
        }
        
        if strike + ball == 0 {
            displayStr = PickCase.out.printString()
        }else if strike == 3 {
            displayStr = PickCase.allStrike.printString()
        }else {
            displayStr = PickCase.ballAndStrike(strike: strike, ball: ball).printString()
        }
        
        return (SL: displayStr, HL: historyStr!)
    }
    
    // 랜덤의 3자리 Int 생성 함수
    func makeRandomList() -> [Int] {
        var randomNumberList: [Int] = []
        while randomNumberList.count < 3 {
            let randomNum: Int = Int(arc4random_uniform(10))
            if !randomNumberList.contains(randomNum) {
                randomNumberList.append(randomNum)
            }
        }
        return randomNumberList
    }
    
}

UIViewController

import UIKit
class ViewController: UIViewController {
    
    //Mark - 00. UI 연관 Property
    private var isRunning: Bool = false
    private var displayLabelList: [UILabel]?
    private var selectedNumberList: [Int]?
    private var randomNumberList: [Int]?
    private var historyStr: String?
    private var displayLabelStr: String { // [Int] -> String 변환 후 전시하기 위함, Computed property
        get {
            var str: String = ""
            for i in 0..<3 { str += "\(selectedNumberList![i])" }
            return str
        }
    }
    
    //Mark - 01. UILabel
    @IBOutlet weak var scoreLabel: UILabel!
    @IBOutlet weak var displayLabel01: UILabel!
    @IBOutlet weak var displayLabel02: UILabel!
    @IBOutlet weak var displayLabel03: UILabel!
    @IBOutlet weak var historyLabel: UITextView!
    
    // Mark - 02. ViewDidLoad
    override func viewDidLoad() {
        super.viewDidLoad()
        displayLabelList = [displayLabel01,displayLabel02,displayLabel03] // LB 초기화
    }
    
    //Mark - 03. Start button : 시작
    @IBAction func btnReplay(_ sender: UIButton) {
        isRunning = true
        randomNumberList = brain.makeRandomList()
        scoreLabel.text = "시작해볼까요? 👻"
        resetProperty()
        historyStr = "" // 초기화
        historyLabel.text = ""
    }
    
    //Mark - 04. Clear Button (숫자 지우기)
    @IBAction func btnCancel(_ sender: UIButton) {
        resetProperty()
    }
    
    //Mark - 05. UIButton: btnNum click
    @IBAction func btnNumClick(_ sender: UIButton) {
        if isRunning {
            let selectedNum = sender.tag
            if selectedNumberList!.count < displayLabelList!.count && !selectedNumberList!.contains(selectedNum) {
                selectedNumberList?.append(selectedNum)
                let lastIndex = selectedNumberList!.count - 1
                let inputLabel = displayLabelList![lastIndex]
                inputLabel.text = "\(selectedNum)"
            }else if selectedNumberList!.count >= displayLabelList!.count {
                scoreLabel.text = "확인 버튼을 누르세요👇🏻"
            }else if selectedNumberList!.contains(selectedNum) {
                scoreLabel.text = "숫자 중복은 안돼요 🤡"
            }
        }
    }
    
    //Mark - 06. 연산: btnCheck - UIButton
    //연산 로직을 담고 있는 SmartBrain(모델) 의 instance 생성
    let brain: SmartBrain = SmartBrain()
    
    @IBAction func btnCheck(_ sender: UIButton) {
        if isRunning && selectedNumberList!.count == displayLabelList!.count {
            let finalStr = brain.compareCheck(arr1: selectedNumberList!, arr2: randomNumberList!, inputStr: displayLabelStr)
            scoreLabel.text = finalStr.SL
            historyStr! += finalStr.HL
            historyLabel.text = historyStr
        }
        resetProperty()
    }
    
    //초기화 함수
    func resetProperty() {
        selectedNumberList = []
        for label in displayLabelList! {
            label.text = "-"
        }
    }
    
}