[英]Updating nodes in a SpriteKit scene from an outside UIViewController
如何从场景本身之外更新SpriteKit场景。 例如,如何通过按下UIButton更新SKLabelNode。
现场
class GameScene: SKScene {
var myLabel:SKLabelNode = SKLabelNode()
override func didMoveToView(view: SKView) {
myLabel.text = "Initial State"
myLabel.position = CGPoint(x:CGRectGetMidX(self.frame), y:CGRectGetMidY(self.frame))
self.addChild(myLabel)
}
func didPressButton() {
myLabel.text = "Pressed! 👻"
}
ViewController
import UIKit
import SpriteKit
class GameViewController: UIViewController {
@IBAction func didPressButton(sender: AnyObject) {
if let scene = GameScene(fileNamed:"GameScene") {
scene.didPressButton()
}
}
override func viewDidLoad() {
super.viewDidLoad()
if let scene = GameScene(fileNamed:"GameScene") {
let skView = self.view as! SKView
skView.presentScene(scene)
}
}
…
}
我知道,场景中通常的touchesBegan
对于更新场景中的SKLabelNode效果很好。 但是我特别想从外部事件中更新场景。 有任何想法吗?
在文件中,您的按钮在哪里:
protocol PauseBtnSelectorDelegate {
func didPressPauseBtn(pauseBtn:SKSpriteNode)
}
class HUD: SKNode {
var pauseBtnDelegate:PauseBtnSelectorDelegate?
var pauseBtn :SKSpriteNode!
...
func pauseBtnTap(sender:SKSpriteNode) {
print("pauseBtn touched")
pauseBtnDelegate!.didPressPauseBtn(sender)
}
}
在要通知点击事件的文件中:
class GameScene: SKScene,PauseBtnSelectorDelegate {
var hud: HUD!
...
override func didMoveToView(view: SKView) {
super.didMoveToView(view)
// Adding HUD
self.hud = HUD(currentScene: self,nodeSize: self.frame.size)
self.hud.pauseBtnDelegate = self
self.addChild(hud)
}
func didPressPauseBtn(pauseBtn:SKSpriteNode) {
print("pauseBtn touched")
// Pause the game
}
}
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