新Swiftで行こう…第３７回「ババ抜き６」　田部井保

　さて、ペアを除くボタンを押したら、選択変更出来ないようにします。

以下ソースコードです。

//
//  ViewController.swift
//  baba
//
//  Created by 保 Tabei on 2024/09/15.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        put53()
    }

    var eachCard: [[UILabel]] = [[],[],[],[]]
    var eachButton: [UIButton] = []
    var cardObj:Card = Card(cdCnt: Card.EnumCard.joker)
    func put53() {
        for i in 0 ..< 4 {
            for j in 0 ..< 14 {
                let lbl = UILabel(frame: CGRectMake(0, 0, 50, 21))
                lbl.center = CGPointMake(50 + 40 * CGFloat(j % 7), 150 + 120 * CGFloat(i) +
                                         50 * CGFloat(j / 7))
                lbl.textAlignment = NSTextAlignment.center
                if i != 0 && j == 13 {
                    lbl.text = " "
                } else {
                    lbl.text = "⬛️"
                }
                eachCard[i] += [lbl]
                self.view.addSubview(lbl)
            }
            let btn = UIButton(frame: CGRectMake(0, 0, 50, 21)) as UIButton
            btn.center = CGPointMake(20, 150 + 120 * CGFloat(i) + 25)
            btn.setTitle("⚪️", for: .normal)
            btn.setTitleColor(UIColor.black, for: .normal)
            btn.addTarget(self, action: #selector(btnTapped), for: .touchUpInside)
            btn.tag = i
            eachButton += [btn]
            self.view.addSubview(btn)
        }
        share()
        show()
    }

    var btnEnable = true
    
    @objc func btnTapped(sender: UIButton) {
        if btnEnable == false {
            return
        }
        for i in 0 ..< 4 {
            if eachButton[i] == sender {
                if sender.currentTitle == "⚪️" {
                    sender.setTitle("⚫️", for: .normal)
                } else {
                    sender.setTitle("⚪️", for: .normal)
                }
            } else {
                eachButton[i].setTitle("⚪️", for: .normal)
            }
        }
    }

    func share() {
        btnEnable = true
        cardObj.reset()
        for i in 0 ..< 4 {
            for j in 0 ..< 14 {
                if i != 0 && j == 13 {
                    eachCard[i][j].tag = -1
                } else {
                    var ii: Int
                    ii = cardObj.put()
                    eachCard[i][j].text = cardObj.disp(card: ii)
                    eachCard[i][j].tag = ii
                }
            }
        }
    }

    func show() {
        for i in 0 ..< 4 {
            for j in 0 ..< 14 {
                if eachCard[i][j].tag >= 0 {
                    eachCard[i][j].text = cardObj.disp(card: eachCard[i][j].tag)
                } else {
                    eachCard[i][j].text = "　"
                }
            }
        }
    }

    @IBAction func btnGoTouch(_ sender: Any) {
        share()
        show()
    }
    
    @IBAction func btnPairTouch(_ sender: Any) {
        var selected = false
        for i in 0 ..< 4 {
            if eachButton[i].currentTitle == "⚫️" {
                selected = true
                break
            }
        }
        if !selected {
            let alert = UIAlertController()
            alert.title = "選択"
            alert.message = "４組のうちのどれかを選択して下さい。"
            alert.addAction(UIAlertAction(title: "OK", style: .default))
            present(alert, animated: true, completion: nil)
            return
        }
        btnEnable = false
        for i in 0 ..< 4 {
            for j in 0 ..< 13 {
                if (eachCard[i][j].tag == 52) || (eachCard[i][j].tag == -1) {
                    continue
                }
                for k in j + 1 ..< 14 {
                    if (eachCard[i][k].tag == 52) || (eachCard[i][k].tag == -1) {
                        continue
                    }
                    if (eachCard[i][j].tag % 13) == (eachCard[i][k].tag % 13) {
                        eachCard[i][j].tag = -1
                        eachCard[i][k].tag = -1
                        break
                    }
                }
            }
            var find = false
            var k = 0
            for j in 0 ..< 14 {
                if eachCard[i][j].tag == -1 {
                    find = true
                } else {
                    if find {
                        eachCard[i][k].tag = eachCard[i][j].tag
                        eachCard[i][j].tag = -1
                    }
                    k += 1
                }
            }
        }
        show()
    }
}

　次回からは、コンピュータが前の人のカードを引く処理を付け加えます。最初は難しくならないように二番目の組の人が、一番上の組から一枚引く処理を付け加えます。「引く」ボタンを設けて、このボタンを押す度に一番上の組みから一枚引いて二番目の組に入れるという処理を加えます。ユーザーは３番目か４番目の組を選ぶ事とします。ここでは、ユーザーが何番目を選ぶか関係ないですが、１番目、２番目はコンピュータの担当と思って下さい。この条件で作ってみて下さい。

目次　解説編