已经有一些关于如何在 SpriteKit 中制作按钮的问题，例如Swift Spritekit 以编程方式添加按钮和在 SKScene 中设置按钮。
无论哪种方式，解决方案是为SKSpriteNode按钮制作一个纹理，然后在函数touchesEnded中测试触摸是否落在按钮内SKSpriteNode。
然而，有趣的是，如果要将按钮设置为子按钮，例如 aSKCameraNode或 another SKSpriteNode，则此方法不再有效。
我的问题是为什么？以及如何克服这一困境。
更新：
关于下面的帖子，这里有两个简单的 GameScene.swift 文件的替代版本。主要区别在于，在第一种情况下，sprite2它不是相机的孩子，而在版本 2 中它是。
注意：在 gifs 中，请注意在版本 1 中，单击紫色精灵 ( sprite2) 会导致它打印“你轻按了紫色精灵。”，而在版本 2 中它会显示“蓝色精灵”。因此问题很清楚：
点击另一个 SKNode 的子节点注册为点击最上面的父节点，而不是实际点击的节点！
新问题：如何纠正这个问题。
附录：在第 2 版sprite2中，由于成为相机的孩子，位置发生了一些变化——因为它是 MWE，它不会影响这个演示，我选择不更正它。
版本 1
class GameScene: SKScene {
var cam: SKCameraNode!
var sprite = SKSpriteNode(imageNamed: "sprite")
var sprite2 = SKSpriteNode(imageNamed: "sprite2")
override func didMove(to view: SKView) {
backgroundColor = SKColor.white
sprite.position = CGPoint(x: size.width/4,y: size.height/2)
sprite2.position = CGPoint(x: size.width/4 * 3,y: size.height/2)
sprite.anchorPoint = CGPoint(x:0.5, y:0.5)
// Set up the camera
cam = SKCameraNode()
self.camera = cam
cam.setScale(3.0)
cam.position = CGPoint(x: size.width/4, y: 0)
sprite.addChild(cam)
addChild(sprite); addChild(sprite2)
}
func touchDown(atPoint pos : CGPoint) {
}
func touchMoved(toPoint pos : CGPoint) {
}
func touchUp(atPoint pos : CGPoint) {
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchDown(atPoint: t.location(in: self)) }
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchMoved(toPoint: t.location(in: self)) }
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch = touches.first
let touchLocation = touch!.location(in: self)
if sprite.contains(touchLocation) {
print("You tapped the blue sprite")
}
if sprite2.contains(touchLocation) {
print("You tapped the purple sprite")
}
}
override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchUp(atPoint: t.location(in: self)) }
}
override func update(_ currentTime: TimeInterval) {
// Called before each frame is rendered
}
}
版本 2
class GameScene: SKScene {
var cam: SKCameraNode!
var sprite = SKSpriteNode(imageNamed: "sprite")
var sprite2 = SKSpriteNode(imageNamed: "sprite2")
override func didMove(to view: SKView) {
backgroundColor = SKColor.white
// Scale Sprites
// sprite.setScale(0.3)
sprite2.setScale(0.3)
sprite.position = CGPoint(x: size.width/4,y: size.height/2)
// sprite2.position = CGPoint(x: size.width/4 * 3,y: size.height/2)
sprite.anchorPoint = CGPoint(x:0.5, y:0.5)
// Set up the camera
cam = SKCameraNode()
self.camera = cam
cam.setScale(3.0)
cam.position = CGPoint(x: size.width/4, y: 0)
sprite.addChild(cam)
addChild(sprite); //addChild(sprite2)
cam.addChild(sprite2)
}
func touchDown(atPoint pos : CGPoint) {
}
func touchMoved(toPoint pos : CGPoint) {
}
func touchUp(atPoint pos : CGPoint) {
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchDown(atPoint: t.location(in: self)) }
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchMoved(toPoint: t.location(in: self)) }
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch = touches.first
let touchLocation = touch!.location(in: self)
if sprite.contains(touchLocation) {
print("You tapped the blue sprite")
}
if sprite2.contains(touchLocation) {
print("You tapped the purple sprite")
}
}
override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchUp(atPoint: t.location(in: self)) }
}
override func update(_ currentTime: TimeInterval) {
// Called before each frame is rendered
}
}
