冰雪久久乘法表

練習[]，func，viewWillAppear，sender的tag，頁面傳值，instantiateViewController，modalPresentationStyle，dismiss

原本只是想稍微試做一下peter 課堂ppt上的小練習，一開始的畫面長這樣。

確實這樣就照著做完了，然後想說，最近姪女在學99乘法，不然做一下99乘法給他玩好了。

後來看了一下這工程畫面，說真的連我都不想玩，只好發揮設計師的能力重新設計了一下版面。

恩，有畫面還是有差，連我都想玩了XD，順便也練習autolayout更熟悉了。但為了美付出的代價就是重做，元件跟程式都重寫，app要改設計相對來說比網頁還麻煩多了。

中間還有個小插曲，在找冰雪奇緣的石頭人還不知道英文叫什麼，原來叫做trolls，害我搜尋什麼stone…rock…都找不到圖

中間頁面傳值部分也遇到卡關，主要在於結果頁要回到開始頁時使用了dismiss回去，這樣回到開始頁時viewDidLoad是不會重做動作，需要使用viewWillAppear搭配把present改為全螢幕的滿版設定才能觸發。

以下兩行來自彼得潘的解救，這卡了我一天啊…

viewWillAppear，controller.modalPresentationStyle = .fullScreen

override func viewWillAppear(_ animated: Bool) {}

來看一下完成作品。

當然還有很多東西沒完善，包含亂數出題，亂數答案，亂數角色圖片，之後再慢慢補齊功能。

語法有點笨，但先求完成再說。if else應該換成switch。

import UIKit

class FirstViewController: UIViewController {
    
    
    var number = 0
    var addscore = 0
    var score = 0

    var qnas = [
        Qna(question: "2x1=?", answer: "2", choice1: "1", choice2: "2", choice3: "3", choice4: "4"),
        Qna(question: "2x2=?", answer: "4", choice1: "4", choice2: "5", choice3: "6", choice4: "7"),
        Qna(question: "3x3=?", answer: "9", choice1: "7", choice2: "8", choice3: "9", choice4: "10"),
        Qna(question: "4x4=?", answer: "16", choice1: "13", choice2: "14", choice3: "15", choice4: "16"),
        Qna(question: "5x5=?", answer: "25", choice1: "24", choice2: "25", choice3: "26", choice4: "27"),
    ]
    
    func playgame() {
        if number < qnas.count{
            q1question.text = qnas[number].question
            q2question.text = qnas[number].question
            q3question.text = qnas[number].question
            q4question.text = qnas[number].question
            q1answer.text = qnas[number].choice1
            q2answer.text = qnas[number].choice2
            q3answer.text = qnas[number].choice3
            q4answer.text = qnas[number].choice4
            gameround.text = "1"
            rightText.text = ""
            rightAddScore.text = ""
            rightimage.isHidden = true
            
        }else {
            number = 0
            playgame()
        }
    }
    
    func rightcount(){
        number += 1
        playgame()
        rightText.text = "答對了！"
        rightText.textColor = UIColor.systemGreen
        rightText.isHidden = false
        score += 100
        gamesocre.text = "\(score)"
        gameround.text = "\(number+1)"
        rightAddScore.text = "+100"
        rightAddScore.textColor = UIColor.systemGreen
        rightimage.image = UIImage(systemName: "arrowtriangle.up.fill")
    }
    
    func wrongcount(){
        number += 1
        playgame()
        rightText.text = "答錯了！"
        rightText.textColor = UIColor.systemRed
        rightText.isHidden = false
        score += 0
        gamesocre.text = "\(score)"
        gameround.text = "\(number+1)"
        rightAddScore.text = "0"
        rightAddScore.textColor = UIColor.systemRed
        rightimage.image = UIImage(systemName: "arrowtriangle.down.fill")

    }
    
    
    @IBOutlet weak var q1question: UILabel!
    @IBOutlet weak var q2question: UILabel!
    @IBOutlet weak var q3question: UILabel!
    @IBOutlet weak var q4question: UILabel!
    @IBOutlet weak var q1answer: UILabel!
    @IBOutlet weak var q2answer: UILabel!
    @IBOutlet weak var q3answer: UILabel!
    @IBOutlet weak var q4answer: UILabel!
    @IBOutlet weak var gamesocre: UILabel!
    @IBOutlet weak var gameround: UILabel!
    @IBOutlet weak var rightAddScore: UILabel!
    @IBOutlet weak var rightText: UILabel!
    @IBOutlet weak var rightimage: UIImageView!
    @IBOutlet weak var hintText: UILabel!
    

    override func viewDidLoad() {
        super.viewDidLoad()
        number = 0
    }
    
    override func viewWillAppear(_ animated: Bool) {
        number = 0
        addscore = 0
        score = 0
        gamesocre.text = "0"
        playgame()
    }
    
    @IBAction func answerbutton(_ sender: Any) {
        
        //改switch
        if gameround.text == "5" {
            if (sender as AnyObject).tag == 1 {
                if qnas[number].answer == qnas[number].choice1{
                    rightcount()
                }else{
                    wrongcount()
                }
            }else if (sender as AnyObject).tag == 2 {
                if qnas[number].answer == qnas[number].choice2{
                    rightcount()
                }else{
                    wrongcount()
                }
            }else if (sender as AnyObject).tag == 3 {
                if qnas[number].answer == qnas[number].choice3{
                    rightcount()
                }else{
                    wrongcount()
                }
            }else if (sender as AnyObject).tag == 4 {
                if qnas[number].answer == qnas[number].choice4{
                    rightcount()
                }else{
                    wrongcount()
                }
            }
            if let controller = storyboard?.instantiateViewController(withIdentifier: "secondView") as? SecondViewController {
                controller.finalscore = gamesocre.text
                controller.modalPresentationStyle = .fullScreen //讚嘆彼得潘解救
                present(controller, animated: true, completion: nil)
            }
        }else{
            if (sender as AnyObject).tag == 1 {
                if qnas[number].answer == qnas[number].choice1{
                    rightcount()
                }else{
                    wrongcount()
                }
            }else if (sender as AnyObject).tag == 2 {
                if qnas[number].answer == qnas[number].choice2{
                    rightcount()
                }else{
                    wrongcount()
                }
            }else if (sender as AnyObject).tag == 3 {
                if qnas[number].answer == qnas[number].choice3{
                    rightcount()
                }else{
                    wrongcount()
                }
            }else if (sender as AnyObject).tag == 4 {
                if qnas[number].answer == qnas[number].choice4{
                    rightcount()
                }else{
                    wrongcount()
                }
            }
            
        }
        
        
        
        
    }