Flying in a 3D world

Let's now build a scene where we can fly by skipping colorful cubes.

Setting up a scene

By running the app built so far, you might have noticed that, when you select the Play button, the app crashes. This is because GameViewController expects to be set up by the Storyboard where the view is actually SCNView; because the view is a plain UIView, it crashes.

To fix this issue, we need to build a slim GameViewController from scratch:

import UIKit import QuartzCore import SceneKit class GameViewController: UIViewController { private let scnView = SCNView() private var scene: SCNScene! override func viewDidLoad() { super.viewDidLoad() scnView.frame = view.bounds view.addSubview(scnView) createContents() } override func prefersStatusBarHidden() ...

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