ios - swift 游戏相同的消息

Question

每当 (count) 大于 (highscored) 时，我都会收到相同的消息。

但我想要的是当 (count) 低于 (highscored) 你得到(“你得分(计数)分”)。

我是一名学生并且做了一个关于swift的教程，所以现在我添加了一些要学习的东西，它是一个点击游戏，你需要尽可能快地点击以设置一个新的高分。

这就是我要说的部分:

func subtractTime() {
    seconds--
    timerLabel.text = "Time: \(seconds)"

    if(seconds == 0)  {
        if(highscored < count)
        {
            highscored < count
            saveHighScore(count)
            highscore.text = "Highscore: \(loadhighScore().description)"
        }

        if (highscored > count) {
            timer.invalidate()
            let alert = UIAlertController(title: "Time is up!",
                message: "You scored \(count) points",
                preferredStyle: UIAlertControllerStyle.Alert)
            alert.addAction (UIAlertAction(title: "Play Again", style: UIAlertActionStyle.Default, handler: {
                action in self.setupGame()
            }))
            presentViewController(alert, animated: true, completion:nil)
        }
        else{
        timer.invalidate()
        let alert2 = UIAlertController(title: "Time is up!",
            message: "You set a new higscore \(count) points",
            preferredStyle: UIAlertControllerStyle.Alert)
            alert2.addAction (UIAlertAction(title: "Play Again", style: UIAlertActionStyle.Default, handler: {
            action in self.setupGame()
        }))
            presentViewController(alert2, animated: true, completion:nil)}



    }}

这是孔代码:

import UIKit

class ViewController: UIViewController {

@IBOutlet var scoreLabel: UILabel!
@IBOutlet var timerLabel: UILabel!
@IBOutlet var highscore: UILabel!


var count = 0
var seconds = 0
var timer = NSTimer()
var highscored = 0


@IBAction func buttonPressed()  {
    count++
    scoreLabel.text = "Score \n\(count)"
}


func setupGame() { if(highscored > count) {
    seconds = 30
    count = 0
    timerLabel.text = "Time: \(seconds)"
    scoreLabel.text = "Score:\(count)"
    timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("subtractTime"), userInfo: nil, repeats: true)
    }
else  {
    seconds = 30
    count = 0
    timerLabel.text = "Time: \(seconds)"
    scoreLabel.text = "Score:\(count)"
    highscore.text = "Highscore: \(loadhighScore().description)"
    timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("subtractTime"), userInfo: nil, repeats: true)
    }
}


func subtractTime() {
    seconds--
    timerLabel.text = "Time: \(seconds)"

    if(seconds == 0)  {
        if(highscored < count)
        {
            highscored < count
            saveHighScore(count)
            highscore.text = "Highscore: \(loadhighScore().description)"
        }

        if (highscored > count) {
            timer.invalidate()
            let alert = UIAlertController(title: "Time is up!",
                message: "You scored \(count) points",
                preferredStyle: UIAlertControllerStyle.Alert)
            alert.addAction (UIAlertAction(title: "Play Again", style: UIAlertActionStyle.Default, handler: {
                action in self.setupGame()
            }))
            presentViewController(alert, animated: true, completion:nil)
        }
        else{
        timer.invalidate()
        let alert2 = UIAlertController(title: "Time is up!",
            message: "You set a new higscore \(count) points",
            preferredStyle: UIAlertControllerStyle.Alert)
            alert2.addAction (UIAlertAction(title: "Play Again", style: UIAlertActionStyle.Default, handler: {
            action in self.setupGame()
        }))
            presentViewController(alert2, animated: true, completion:nil)}



    }}


func saveHighScore(high:Int) {
    NSUserDefaults.standardUserDefaults().setInteger(high, forKey: "highscore")
}
func loadhighScore() -> Int {
    return NSUserDefaults.standardUserDefaults().integerForKey("highscore")
}
func resetHighScore() {
    NSUserDefaults.standardUserDefaults().removeObjectForKey("highscore")
}




override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
setupGame()



}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

如有任何帮助，我们将不胜感激。

Answer 1

您实际上从未为 highscored 赋值所以它总是设置为 0您最初将其声明为的值。

因此，表达式 if (highscored > count)永远不会返回 true，所以你永远不会执行你想要的代码。您可能的情况是计数大于零(如果用户完全点击按钮)，这将触发 if(highscored < count) if 语句，或者计数等于 highscored(如果用户根本不点击按钮)，此时程序将失败 highscored > count表达式，然后转到 else 语句，此时它告诉用户他们有了新的高分。

一个好的解决方案是将 highScored 的值设置为 setupGame() 中的当前最高分。方法，像这样:

func setupGame() { 
    highscored = loadhighscore()
    seconds = 30
    count = 0
    timerLabel.text = "Time: \(seconds)"
    scoreLabel.text = "Score:\(count)"
    if(highscored > count) {
        highscore.text = "Highscore: \(loadhighScore().description)"
    }
    timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("subtractTime"), userInfo: nil, repeats: true)
}

另一件值得一提的事情是，虽然这不会导致您的代码出现任何错误，但您的 subtractTime() 中似乎有一个多余的 if 语句。方法，因为您首先检查 highscored 是否大于 count，然后您还检查它是否大于或等于以下 else 中的 count下一个 if 语句的一部分。如果这是故意的，那么请忽略下一段代码，但我可能会将其格式化为类似的格式；

func subtractTime() {
    seconds--
    timerLabel.text = "Time: \(seconds)"

    if(seconds == 0)  {
        timer.invalidate()

        if(highscored <= count)
        {
            saveHighScore(count)
            highscore.text = "Highscore: \(loadhighScore().description)"

            let alert2 = UIAlertController(title: "Time is up!",
                message: "You set a new higscore \(count) points",
                preferredStyle: UIAlertControllerStyle.Alert)
            alert2.addAction (UIAlertAction(title: "Play Again", style: UIAlertActionStyle.Default, handler: {
                action in self.setupGame()
            }))
                presentViewController(alert2, animated: true, completion:nil)
        }
        else {
            let alert = UIAlertController(title: "Time is up!",
                message: "You scored \(count) points",
                preferredStyle: UIAlertControllerStyle.Alert)
            alert.addAction (UIAlertAction(title: "Play Again", style: UIAlertActionStyle.Default, handler: {
                action in self.setupGame()
            }))
            presentViewController(alert, animated: true, completion:nil)
        }
    }
}

希望对你有帮助