Question

与我在应用程序商店中找到的许多其他应用程序一样，当您触摸按钮时，它会以某种方式缩放，无论它是变大还是变小。我想使用SpriteKit个节点和SKAction实现此目的; scaleTo。这是我到目前为止所得到的。

import SpriteKit

class GameEndedScene: SKScene {

let scaleIn = SKAction.scaleTo(1.5, duration: 0.2)
let scaleOut = SKAction.scaleTo(1.0, duration: 0.2)

override func didMoveToView(view: SKView) {
    /* Setup your scene here */
    var playButton = SKSpriteNode()
    var shareButton = SKSpriteNode()

    playButton.size = CGSizeMake(100, 100)
    shareButton.size = CGSizeMake(100, 100)

    playButton.position = CGPointMake(self.frame.midX, self.frame.midY + 100)
    shareButton.position = CGPointMake(self.frame.midX, self.frame.midY - 100)

    playButton.color = UIColor.whiteColor()
    shareButton.color = UIColor.whiteColor()

    playButton.name = "Scale"
    shareButton.name = "Scale"

    addChild(playButton)
    addChild(shareButton)
}

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let node: SKNode = nodeAtPoint(location)

        if node.name == "Scale" {
            node.runAction(scaleIn)
        }
    }
}

override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {

}

override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let node: SKNode = nodeAtPoint(location)

        if node.name == "Scale" {
            node.runAction(scaleOut)
        }
    }
}

缩放在touchesBegan和touchesEnded中完全正常，但我希望用户能够移动触摸，如果它开始触及名称为“缩放”的新节点“我希望它与Touches开始具有相同的效果，如果触摸远离节点，我希望它具有与touchesEnded相同的效果。感谢您的帮助，对于因为缺乏细节而感到抱歉，因为它是凌晨3点。

Answer 1

我想出了如何使用单独的Boolean值来表示节点当前是否已缩放。用户现在可以触摸并按住;如果他们将手指移离节点，它将scaleTo正常（1.0），如果他们将手指移动到节点上，它将scaleTo 1.5。我的代码完美无缺，但我不确定是否有更精致的方法可以做到这一点。这是我的代码（这个有效）但如果有人有更精致和有效的方法来实现这一点，请发布你的答案。谢谢

import SpriteKit

class GameEndedScene: SKScene {

var playButton = SKSpriteNode()
var shareButton = SKSpriteNode()
let scaleIn = SKAction.scaleTo(1.5, duration: 0.2)
let scaleOut = SKAction.scaleTo(1.0, duration: 0.2)
var playScale: Bool = Bool()
var shareScale: Bool = Bool()

override func didMoveToView(view: SKView) {
    /* Setup your scene here */

    playButton.size = CGSizeMake(100, 100)
    shareButton.size = CGSizeMake(100, 100)

    playButton.position = CGPointMake(self.frame.midX, self.frame.midY + 100)
    shareButton.position = CGPointMake(self.frame.midX, self.frame.midY - 100)

    playButton.color = UIColor.whiteColor()
    shareButton.color = UIColor.whiteColor()

    addChild(playButton)
    addChild(shareButton)
}

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let node: SKNode = nodeAtPoint(location)

        if node == playButton {
            playScale = true
            playButton.runAction(scaleIn)
        }
        else if node == shareButton {
            shareScale = true
            shareButton.runAction(scaleIn)
        }
    }
}

override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let node: SKNode = nodeAtPoint(location)

        if node != playButton && (playScale) {
            playScale = false
            playButton.runAction(scaleOut)
        }
        else if node != shareButton && (shareScale) {
            shareScale = false
            shareButton.runAction(scaleOut)
        }
        else if node == playButton && (!playScale) {
            playScale = true
            playButton.runAction(scaleIn)
        }
        else if node == shareButton && (!shareScale) {
            shareScale = true
            shareButton.runAction(scaleIn)
        }
    }
}

override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let node: SKNode = nodeAtPoint(location)

        if node == playButton {
            playScale = false
            playButton.runAction(scaleOut)
        }
        else if node == shareButton {
            shareScale = false
            shareButton.runAction(scaleOut)
        }
        else if node != playButton && (playScale) {
            playScale = false
            playButton.runAction(scaleOut)
        }
        else if node != shareButton && (shareScale) {
            shareScale = false
            shareButton.runAction(scaleOut)
        }
    }
}

节点和按钮缩放 - Touchesbegan，Touchesmoved，Touchesended

1 个答案: