使用segues實現遊戲，重新啓動時崩潰。斯威夫特

Question

我正在開發一個遊戲，船和石頭相撞。當船碰撞石頭時，遊戲結束。我爲船和石頭的交點實施了intersects（）方法。對於我收集的每一枚硬幣，我將分數增加+1。當船和石頭相撞時，我正在進行一次輪迴。執行賽格並使用重新啓動選項顯示比賽分數。一切都很順利，直到我重新開始遊戲，當遊戲重新開始時，有一些問題。以下是問題：

起初遊戲非常流暢，GameOver控制器在碰撞發生時顯示，但是當我選擇重新啓動時顯示。

問題1當船碰撞的石，SEGUE顯示兩次，並再次重新啓動後

問題＃2當我在玩第3次在沒有檢測的交集，它拋出一個錯誤

這是錯誤的屏幕快照。

我可以第一次玩遊戲，但重新開始時我無法玩遊戲。重新啓動時遊戲無法正常工作。

這發生在使用segues時，當我使用UIAlertView遊戲運行正常時。我想執行segues。

這裏是ViewController.swift

func movingStone() { 


    stone = UIImageView(image: UIImage(named: "stones.png")) 
    stone.frame = CGRect(x: 0, y: 0, width: 5.0, height: 5.0) 



    stone.bounds = CGRect(x:0, y:0, width: 5.0, height:5.0) 
    stone.contentMode = .center; 



    stone.layer.position = CGPoint(x: boat.center.x - 5, y: 0.0) 
    stone.transform = CGAffineTransform(rotationAngle: 3.142) 


    self.view.insertSubview(stone, aboveSubview: myView) 



    UIView.animate(withDuration: 5, delay: 0, options: UIViewAnimationOptions.curveLinear, animations: {() -> Void in 
     self.stone.frame.origin.y = self.view.bounds.height + self.stone.frame.height + 10 
    }) { (success:Bool) -> Void in 

     self.stone.removeFromSuperview() 
     self.movingStone() 

    } 



} 

    func movingFood() { 

    food = UIImageView(image: UIImage(named: "fishcoin2.png")) 
    food.frame = CGRect(x: 0, y: 0, width: 5.0, height: 5.0) 
    var stone3 = leftS + arc4random() % rightS 


    food.bounds = CGRect(x:0, y:0, width: 5.0, height: 5.0) 
    food.contentMode = .center; 
    food.layer.position = CGPoint(x: boat.center.x + 20, y: 0.0) 
    food.transform = CGAffineTransform(rotationAngle: 3.142) 


    self.view.insertSubview(food, aboveSubview: myView) 


    UIView.animate(withDuration: 5, delay: 0, options: UIViewAnimationOptions.curveLinear, animations: {() -> Void in 
     self.food.frame.origin.y = self.view.bounds.height + self.food.frame.height - 50 
    }) { (success:Bool) -> Void in 


     self.food.removeFromSuperview() 
     self.movingFood() 

    } 



} 

    func intersectsAt(tap2 : Timer) { 
    if(boat.layer.presentation()?.frame.intersects((food.layer.presentation()?.frame)!))!{ 
     food.layer.isHidden = true 

     coins = +1 
     collectedCoin.text = "\(coins)" 
     if coins > 100 { 
      super.performSegue(withIdentifier: "GameOverIdentifier", sender: self) 

     } 
    } 

    if(boat.layer.presentation()?.frame.intersects((stone.layer.presentation()?.frame)!))! { 
     stopGame() 


    } 

} 

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if segue.identifier == "GameOverIdentifier" { 
     let gameOver = segue.destination as? GameOver 
     gameOver?.coin = coins 


    } 
} 

func stopGame() { 

    tapTimer2.invalidate() 

    boat.image = UIImage(named: "wreckboat.png") 

    super.performSegue(withIdentifier: "GameOverIdentifier", sender: self) 

} 

這裏是一個具有重新啓動按鈕，實現SEGUE以前控制器GameOver.swift。

import UIKit 

class GameOver: UIViewController { 

var coin = Int() 


var restart : ViewController! 

@IBOutlet weak var go: UILabel! 
override func viewDidLoad() { 
    super.viewDidLoad() 

    go.text = "\(self.coin)" 
    // Do any additional setup after loading the view. 
} 

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


@IBAction func restartGame(_ sender: Any) { 
    performSegue(withIdentifier: "goBack", sender: self) 
} 

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if segue.identifier == "goBack" { 
     if let back = segue.destination as? ViewController { 

      back.startGame() 
    } 

    } 
} 



/* 
// MARK: - Navigation 

// In a storyboard-based application, you will often want to do a little preparation before navigation 
override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    // Get the new view controller using segue.destinationViewController. 
    // Pass the selected object to the new view controller. 
} 
*/ 

}

我認爲這個問題是當我使用的touchesBegan和touchesMoved。

任何建議將是有價值的。

謝謝。

Answer 1

從你的代碼我可以看到你從ViewController.swift觸發了一個從GameOver.swift繼承的繼承，這是好的，這意味着你正在呈現GameOverViewController。問題是你不應該GameOverViewController Segue公司回到你ViewController.swift你必須要關閉重啓功能

@IBAction func restartGame(_ sender: Any) { 
    self.dismiss(animated: true, completion: nil) 
} 

第二個問題，我可以看到裏面的gameOverViewController

是你試圖調用從功能賽格瑞

你不應該使用這個SEGUE回到你的ViewController

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
if segue.identifier == "goBack" { 
    if let back = segue.destination as? ViewController { 
     // this is wrong 
     back.startGame() 
    } 

    } 
} 

您準備可以使用unwindSegue，delegate，notification ...來觸發你的startGame（）函數