增加 Sprite ContainsPoint 大小

Question

我有一个精灵，它的大小已减小到 0.8。当我使用 sprite.ContainsPoint(touchLocation) 时，触摸仅在原始大小精灵的 0.8 范围内注册（这是有道理的）。然而，即使精灵已经缩小，我仍然希望触摸能够注册，就好像精灵仍然是完整大小（1.0）一样。以下是我当前的代码：

var button: SKSpriteNode!

func createButton() {

    button = SKSpriteNode(color: UIColor.redColor(), size: CGSizeMake(100, 100))
    addChild(button)
    button.runAction(SKAction.scaleTo(0.8, duration: 1))

}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

    let touch = touches.first as UITouch!
    let touchLocation = touch.locationInNode(self)

    if button.containsPoint(touchLocation) {

        print("touching within the button")

    }

}

我尝试过的方法没有用，但您可能会看到我正在尝试做的事情：

var button: SKSpriteNode!

func createButton() {

    button = SKSpriteNode(color: UIColor.redColor(), size: CGSizeMake(100, 100))
    addChild(button)
    button.runAction(SKAction.scaleTo(0.8, duration: 1))

}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

    let touch = touches.first as UITouch!
    let touchLocation = touch.locationInNode(self)

    let myButton = CGRectMake(button.position.x, button.position.y, button.size.width / 0.8, button.size.width / 0.8)
    //// the button.size / 0.8 should bring the size back to 1.0

    if myButton.containsPoint(touchLocation) {

        print("touching within the button")

    }

}

任何帮助都会很棒！

Answer 1

您可以添加另一个 SKSpriteNode 作为按钮的子项，作为按钮的实际精灵，而按钮本身没有纹理或颜色。这样，您可以只减少子精灵节点，并在按钮本身内进行命中测试。

例如：

var button: SKSpriteNode!

func createButton() {
    button = SKSpriteNode(color: UIColor.clearColor(), size: CGSizeMake(100, 100))
    addChild(button)

    buttonSprite = SKSpriteNode(color: UIColor.redColor(), size: CGSizeMake(100, 100))
    button.addChild(buttonSprite)
    buttonSprite.runAction(SKAction.scaleTo(0.8, duration: 1))
}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
    let touch = touches.first as UITouch!
    let touchLocation = touch.locationInNode(self)

    if button.containsPoint(touchLocation) {
        print("touching within the button")
    }
}

增加 Sprite ContainsPoint 大小

Increase Sprite ContainsPoint Size

swift

sprite-kit

sprite

contains

touches