swift scenekit类gameviewconroller没有initilizer

Question

我正在完全遵循教程，当教程说运行程序时我得到一个错误，“类gameviewcontroller没有initalizers”

我完全复制了它，所以我不知道出了什么问题，但我认为可能是在我重新检索节点时。

var cameraNode: SCNNode
var shelfNode: SCNNode
var baseCanNode: SCNNode

func createScene(){

cameraNode = levelScene.rootNode.childNode(withName: "camera", recursively: true)!
shelfNode = levelScene.rootNode.childNode(withName: "shelf", recursively: true)!

guard let canScene = SCNScene(named: "resources.scnassets/Can.scn") else { return }
baseCanNode = canScene.rootNode.childNode(withName: "can", recursively: true)!
}

请告诉我我做错了什么。

谢谢。

Answer 1

只需在末尾添加惊叹号

var cameraNode: SCNNode!
var shelfNode: SCNNode!
var baseCanNode: SCNNode!

而不是

var cameraNode: SCNNode
var shelfNode: SCNNode
var baseCanNode: SCNNode