How to implement such control as in the game: rolly vortex? - unity3d

Question

How to implement such control as on video? Game: rolly vortex
Video - https://youtu.be/sShnjs6D59M
How to achieve such control? What should I use? help me please
My code (edited):
public class TouchControl : MonoBehaviour {
float level_width = 1f;
float speed = 0.01f;
void Update()
{
if(Input.touchCount > 0)
{
Debug.Log("Result = " + ((Input.GetTouch(0).position.x / Screen.width) - 0.5f) * 2);
if(((Input.GetTouch(0).position.x / Screen.width) - 0.5f) * 2 > 0) {
Debug.Log(((Input.GetTouch(0).position.x + 0.5f) / 2) + " result");
MoveLeft();
}
if (((Input.GetTouch(0).position.x / Screen.width) - 0.5f) * 2 < 0)
{
Debug.Log(((Input.GetTouch(0).position.x + 0.5f) / 2) + " result");
MoveRight();
}
}
}
void MoveLeft()
{
Vector3 newPos = transform.position;
newPos.x = (Input.GetTouch(0).position.x * level_width) * - 1;
transform.position = Vector3.Lerp(transform.position, newPos, speed * Time.deltaTime);
}
void MoveRight()
{
Vector3 newPos = transform.position;
newPos.x = Input.GetTouch(0).position.x * level_width;
transform.position = Vector3.Lerp(transform.position, newPos, speed * Time.deltaTime);
}
}

Answer 1

Something like this should get you started:
public float level_width = 5f;
public float speed = 0.1f; // 0..1
if(Input.touchCount > 0)
{
Vector3 newPos = transform.position;
newPos.x = Input.GetTouch(0).position.x * width;
transform.position = Vector3.Lerp(transform.position, newPos, speed * Time.deltaTime)
}
speed will adjust the time it takes for the ball to reach the touch position.
level_width helps to scale the input from screen coordinates to your world/level.
Edit: I simplified your code a bit:
public class TouchControl: MonoBehaviour {
float level_width = 10f;
float speed = 0.01 f;
float target_xpos = 0f;
void Update() {
if (Input.touchCount > 0) {
target_xpos = ((Input.GetTouch(0).position.x / Screen.width) - 0.5 f) * 2 * level_width;
MoveToFinger();
}
}
void MoveToFinger() {
Vector3 newPos = transform.position;
newPos.x = target_xpos;
transform.position = Vector3.Lerp(transform.position, newPos, speed * Time.deltaTime);
}
}