大頭貓的 桌球計分板(Scoreboard)

因時間關係加上我沒美術底子＆天份，所以畫面比較簡陋！

執行畫面如下：

大部分要求的功能都有做到，只剩下Rewind倒帶我想不太出來怎麼做，目前能想到的就是把user玩的每個步驟相關參數記錄到陣列裡面，但有個問題是如果有Change Side換邊的時候，這個Rewind也要忠實呈現，那左右打者的名字也要在Rewind時交換，傷腦筋哩～

程式碼如下：

    var rightnowscore: Int = 0
    var leftnowscore: Int = 0
    var rgameset: Int = 0
    var lgameset: Int = 0
    var serve: Int = 0
    var templayername: String?
    //處理左計分板點下去增加分數及相關判斷
    @IBAction func LScore(_ sender: Any) {
        leftnowscore += 1
        serve += 1
        if serve >= 1 && leftnowscore > 9 && rightnowscore > 9 {
            serve = 0
            servepoint()
        } else if serve >= 2 {
            serve = 0
            servepoint()
        }
        gameSet()
        LeftScore.text = String(leftnowscore)
    }
    //處理右計分板點下去增加分數及相關判斷
    @IBAction func RScore(_ sender: Any) {
        rightnowscore += 1
        serve += 1
        if serve >= 1 && leftnowscore > 9 && rightnowscore > 9 {
            serve = 0
            servepoint()
        } else if serve >= 2 {
            serve = 0
            servepoint()
        }
        gameSet()
        RightScore.text = String(rightnowscore)
    }
    //Reset按鈕重置分數＆局數
    @IBAction func Reset(_ sender: Any) {
        RightScore.text = "0"
        LeftScore.text = "0"
        Rset.text = "0"
        Lset.text = "0"
        rightnowscore = 0
        leftnowscore = 0
        rgameset = 0
        lgameset = 0
        Serve.alpha = 0
        serve = 0
    }
    //Change Side按鈕，雙方交換位置
    @IBAction func changeside(_ sender: Any) {
        changeSide()
    }
    //判斷勝局的function
    func gameSet() {
        if Int(rightnowscore)==11 && Int(leftnowscore)<10 {
            rgameset = rgameset + 1
            Rset.text = String(rgameset)
            resetgameSet()
        } else if leftnowscore==11 && Int(rightnowscore)<10{
            lgameset = lgameset + 1
            Lset.text = String(lgameset)
            resetgameSet()
        } else if (rightnowscore - leftnowscore)>=2 && rightnowscore>=12 {
            rgameset = rgameset + 1
            Rset.text = String(rgameset)
            resetgameSet()
        } else if (leftnowscore -  rightnowscore )>=2 && leftnowscore>=12 {
            lgameset = lgameset + 1
            Lset.text = String(lgameset)
            resetgameSet()
        }
    }
    //Reset的function
    func resetgameSet() {
        RightScore.text = "0"
        LeftScore.text = "0"
        rightnowscore = 0
        leftnowscore = 0
        Serve.alpha = 0
        serve = 0
    }
    //Change Side的function
    func changeSide() {
        var temprscore: Int = 0
        var temprgameset: Int = 0
        temprscore = rightnowscore
        temprgameset = rgameset
        rightnowscore = leftnowscore
        rgameset = lgameset
        leftnowscore = temprscore
        lgameset = temprgameset
        RightScore.text = String(rightnowscore)
        LeftScore.text = String(leftnowscore)
        Rset.text = String(rgameset)
        Lset.text = String(lgameset)
        templayername = rightPlayer.text
        rightPlayer.text = leftPlayer.text
        leftPlayer.text = templayername
    }
    //換邊發球的function
    func servepoint() {
        if Serve.alpha == 0 {
            Serve.alpha = 1
        }
        if Serve.frame.origin == CGPoint(x: 284, y:314) {
            Serve.frame.origin = CGPoint(x: 62, y:314)
        } else {
            Serve.frame.origin = CGPoint(x: 284, y:314)
        }
    }
}

後記：Rewind要忠實呈現的話，那連中間有按下Reset、Change Side這2個按鈕也要忠實紀錄相關資料(雙方分數、雙方贏的局數、雙方的名字）