override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        for touch in touches {
            let touchLocation = touch.location(in: self)
            player.position.x = touchLocation.x

        }
    }

var isDragging = false
var player = /* SKSpriteNode or whatever */


override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        let touchLocation = touch.location(in: view)
        if player.contains(touchLocation) {
            isDragging = true
        }
    }
}

override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
    guard isDragging else { return }

    if let touch = touches.first {
        let touchLocation = touch.location(in: view)
        player.position.x = touchLocation.x
    }
}

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    isDragging = false
}