向Scene Kit（Swift）添加自定义游戏逻辑 [英] Adding custom game logic to Scene Kit (Swift)

问题描述

我需要为我的GameViewController添加一个游戏循环（来自Swift游戏模板，用于iOS开发），以便创建一个应用程序并找到这个参考页面，解释如何执行此操作：

I need to add a game loop to my GameViewController (From the Swift "Game" template for iOS development) in order to create an application and found this reference page explaining how to do this:

https://developer.apple .com / library / prerelease / ios / documentation / SceneKit / Reference / SCNSceneRendererDelegate_Protocol /

然而，当我尝试将SCNView的委托设置为ViewController它会抛出警告和错误（在viewDidLoad（）内部）：

However when I try to set the delegate of the SCNView to be the ViewController it throws up warnings and errors (inside viewDidLoad()):

gameView.delegate = self

其中gameView连接到我的故事板中的SCNView：

Where gameView is connected to an SCNView in my storyboard:

@IBOutlet weak var gameView: SCNView!

如果有人可以链接使用Swift和Scene Kit设置游戏逻辑的代码示例，那将是很棒的或者从头开始向我解释。谢谢！

It would be brilliant if someone could link a code example of setting up game logic using Swift and Scene Kit or explain it to me from the ground up. Thank you!

推荐答案

当你指定：

gameView.delegate = self

这需要 self 是一个声明符合 SCNSceneRendererDelegate 协议的类。要使您的视图控制器类声明协议一致性，请使用描述的语法：

This requires that self be a class that declares conformance to the SCNSceneRendererDelegate protocol. To make your view controller class declare protocol conformance, use the syntax described in the Swift book:

class ViewController: UIViewController, SCNSceneRendererDelegate  {
    //                ~~~~~~~~~~~~~~~~  ~~~~~~~~~~~~~~~~~~~~~~~~ ^
    //                ^- superclass     ^- protocol              |
    //                   more protocols if you conform to them --/ 

    // ... rest of class definition ...
}

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