Script that allows a player to move a game object along a path using the arrow keys. The object should move forward when the up arrow is pressed and backward when the down arrow is pressed.

using UnityEngine;

public class ObjectMoveAlongPath : MonoBehaviour
{
    public Transform[] path;
    public float speed = 2f;

    private int currentPathIndex = 0;
    private Vector3 currentTarget;

    private void Start()
    {
        currentTarget = path[0].position;
    }

    private void Update()
    {
        if (Input.GetKey(KeyCode.UpArrow))
        {
            transform.position = Vector3.MoveTowards(transform.position, currentTarget, speed * Time.deltaTime);

            if (Vector3.Distance(transform.position, currentTarget) < 0.1f)
            {
                currentPathIndex = (currentPathIndex + 1) % path.Length;
                currentTarget = path[currentPathIndex].position;
            }
        }
        if (Input.GetKey(KeyCode.DownArrow))
        {
            transform.position = Vector3.MoveTowards(transform.position, currentTarget, -speed * Time.deltaTime);

            if (Vector3.Distance(transform.position, currentTarget) < 0.1f)
            {
                currentPathIndex = (currentPathIndex + path.Length - 1) % path.Length;
                currentTarget = path[currentPathIndex].position;
            }
        }
    }
}