SpriteKit - Touch moved, how to prevent node jump to touch location - sprite-kit

Question

I wrote code for touch moved like this:
"override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = touches.first else {return}
let location = touch.location(in: self)
player.position = location"
The problem is the node/player will jump to wherever I touch and moved in the scene.
How may I fix this? Thank you.

Answer 1

I am going to answer this in pseudo code for two reasons, I am here to help you not do it for you and as a beginner figuring out how to do this yourself could be greatly beneficial.
var ball: SKSpriteNode!
var minWidth: CGFloat = 0
var maxWidth: CGFloat = 0
var startPosX: CGFloat = 0
var startBallPosX: CGFloat = 0
func didMove() {
//did move func of the scene
//setup ball and min and max widths
ball = SKSpriteNode()
addChild(ball)
minWidth = scene.frame.minX
maxWidth = scene.frame.maxY
}
func touchesBegan() {
let location = touch.location(in: self)
startPosX = location.x
startBallPosX = ball.position.x
}
func touchesMoved() {
let location = touch.location(in: self)
var moveXValue = location.x - startPosX
if startBallPosX + moveXValue > maxWidth {
//if ball wants to go past right edge of screen keep it at the edge
ball.position.x = maxWidth
}
else if startBallPosX + moveXValue < minWidth {
//if ball wants to go past left edge of screen keep it at the edge
ball.position.x = minWidth
}
else {
ball.position.x = startBallPosX + moveXValue
}
}