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我目前有一些完成块,应该在完成滑动手势后执行。我在应该在完成块中调用的函数内部放置断点,但它们从不被触发。滑动手势起作用,我不知道为什么完成块没有被调用。这里是我的代码:SpriteKit中的完成块从未调用
import SpriteKit
let plankName = "woodPlank"
class PlankScene: SKScene {
var plankWood : SKSpriteNode?
var plankArray : [SKSpriteNode] = []
override func didMove(to view: SKView) {
enumerateChildNodes(withName: plankName) {
node, stop in
self.plankWood = node as? SKSpriteNode
let swipeRight : UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: #selector(PlankScene.swipedRight))
swipeRight.direction = .right
view.addGestureRecognizer(swipeRight)
}
}
func swipedRight(sender: UISwipeGestureRecognizer) {
if sender.direction == .right {
//The functions in this completion block are never called
swipeAndAddPlank(completion: {
self.addPlank(completion: {
self.movePlanksUp()
})
})
}
}
func swipeAndAddPlank(completion: (()->Void)?) {
let moveOffScreenRight = SKAction.moveTo(x: 400, duration: 0.5)
let nodeFinishedMoving = SKAction.removeFromParent()
plankWood?.run(SKAction.sequence([moveOffScreenRight,nodeFinishedMoving]))
}
//This function never called
func addPlank(completion: (()->Void)?) {
let newPlank = plankWood?.copy() as! SKSpriteNode
newPlank.position = CGPoint(x: 0, y: -259)
plankArray.append(newPlank)
print(plankArray.count)
addChild(newPlank)
}
//This function never called
func movePlanksUp() {
for node:SKSpriteNode in plankArray {
node.run(SKAction.move(by: CGVector(dx: 0, dy: 50), duration: 0.10))
}
}
}
这就是我要找的!但由于一些奇怪的原因,我得到一个错误“无法将类型'()'的值转换为期望的参数类型'() - > Void'” – SwiftyJD
这是我用的:let completionAction = SKAction.runBlock(addPlank {completion!( )}) – SwiftyJD