Управление под смартфоны

Я делаю игру(wasd-движение, Shift-рывок). Как мне адаптировать вот эти клавиши под смартфоны? Спасибо. Вот скрипт:

public class Run : MonoBehaviour
{
    public float MaxMoveSpeed = 6;
    private CharacterController controllerComponent;

    private Vector3 moveSpeed;
    private float dashingTimeLeft;
    private void Start()
    {
        controllerComponent = GetComponent<CharacterController>();
    }

    private void Update()
    {

            UpdateWalk();
            if (Input.GetKeyDown(KeyCode.LeftShift) || Input.GetKeyDown(KeyCode.RightShift) || Input.GetKeyDown(KeyCode.X)) Dash(false);
            else if (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift) || Input.GetKey(KeyCode.X)) Dash(true);
    }

    private void Dash(bool holding)
    {
        if (dashingTimeLeft < (holding ? -.4f : -.2f))
        {
            dashingTimeLeft = .3f;
        }
    }

    private void UpdateWalk()
    {
        float ySpeed = moveSpeed.y;
        moveSpeed.y = 0;
        if (dashingTimeLeft <= 0)
        {
            Vector3 target = MaxMoveSpeed *
                             new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical")).normalized;
            moveSpeed = Vector3.MoveTowards(moveSpeed, target, Time.deltaTime * 300);

            if (moveSpeed.magnitude > 0.1f)
            {
                transform.rotation = Quaternion.RotateTowards(transform.rotation, Quaternion.LookRotation(moveSpeed),
                    Time.deltaTime * 720);
            }
        }
        else
        {
            moveSpeed = MaxMoveSpeed * 3 * moveSpeed.normalized;
        }

        dashingTimeLeft -= Time.deltaTime;

        moveSpeed.y = ySpeed + Physics.gravity.y * Time.deltaTime;
        controllerComponent.Move(moveSpeed * Time.deltaTime);
    }
}