How to move SKSpriteNode in a curve without rotating the sprite in Swift

Question

I'm trying to move a sprite with a curve. I got this code:

let path = UIBezierPath()
path.move(to: CGPoint.zero)
path.addQuadCurve(to: CGPoint(x: ball.position.x+200, y: ball.position.y+50), controlPoint: CGPoint(x: ball.position.x+100, y: ball.position.y+200))
    ball.run(SKAction.follow(path.cgPath, speed: 1.0))

I have few questions: 1 - why my sprite is rotating while moving, and if I can control this rotation? 2 - any idea why the ball is moving only small part of the way and very slow and not a smooth moving (10-20 seconds)?

Does anyone have any idea how this code works? All the answers I found were related to older Swift version that had different method.

Answer 1

At last I've found the solution :)

func beizerSprite()
   {
    // create a bezier path that defines our curve
    let path = UIBezierPath()
    path.move(to: CGPoint(x: 16,y: 239))
    path.addCurve(to:CGPoint(x: 301, y: 239),
                  controlPoint1: CGPoint(x: 136, y: 373),
                  controlPoint2: CGPoint(x: 178, y: 110))

    // use the beizer path in an action
    _playButton.run(SKAction.follow(path.cgPath,
                                    asOffset: false,
                                    orientToPath: true,
                                    speed: 50.0))
   }

This move the SKSprite in a curve along the screen.