在Sprite工具包(swift)中用圆圈写一个文本

Question

我想绘制一个圆圈并在其中放入一个文本.我能做什么？

如果我移动或调整圆的大小,文本移动或调整大小

        var color = UIColor(red: 0x00, green: 0x44, blue: 0x44, alpha: 1)
        var Circle = SKShapeNode(circleOfRadius: 100 )
        Circle.position = CGPointMake(frame.midX, frame.midY)
        Circle.strokeColor = SKColor.blackColor()
        Circle.glowWidth = 1.0
        Circle.fillColor = color

        let myLabel = SKLabelNode(fontNamed:"Chalkduster")
        myLabel.text = "Hello, World!";
        myLabel.fontSize = 60;
        myLabel.position = CGPointMake(frame.midX, frame.midY)
        myLabel.fontColor = UIColor.blackColor()

        self.addChild(Circle)

Answer 1

一次拖动两种方法的方法是,您可以将两者都添加到同一个视图中,之后您可以通过触摸事件(如show下面的代码)更改两者的位置.

import SpriteKit

class GameScene: SKScene {

    var deltaPoint = CGPointZero
    let myLabel = SKLabelNode(fontNamed:"Chalkduster")
    var Circle = SKShapeNode(circleOfRadius: 100 )

    override func didMoveToView(view: SKView) {
        /* Setup your scene here */
        var color = UIColor(red: 0x00, green: 0x44, blue: 0x44, alpha: 1)

        Circle.position = CGPointMake(frame.midX, frame.midY)
        Circle.strokeColor = SKColor.blackColor()
        Circle.glowWidth = 1.0
        Circle.fillColor = color

        myLabel.text = "Hello, World!";
        myLabel.fontSize = 20
        myLabel.position = CGPointMake(Circle.frame.midX, Circle.frame.midY)
        myLabel.fontColor = UIColor.blackColor()

        // Add them into same scene
        self.addChild(Circle)
        self.addChild(myLabel)

    }

    override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {

        if let touch = touches.first as? UITouch {
            let currentPoint = touch.locationInNode(self)
            let previousPoint = touch.previousLocationInNode(self)
            deltaPoint = CGPointMake(currentPoint.x - previousPoint.x, currentPoint.y - previousPoint.y)
        }

    }

    override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {

        deltaPoint = CGPointZero
    }

    override func touchesCancelled(touches: Set<NSObject>!, withEvent event: UIEvent!) {

        deltaPoint = CGPointZero
    }

    override func update(currentTime: CFTimeInterval) {
        /* Called before each frame is rendered */
        var newPoint = CGPointMake(self.myLabel.position.x + self.deltaPoint.x, self.myLabel.position.y + self.deltaPoint.y)

        // you can drag both item at same time
        myLabel.position = newPoint
        Circle.position = newPoint

        deltaPoint = CGPointZero
    }
}