MiniGames/Assets/Scripts/SkyWalker/Skywalker_MovingPlatform.cs

using UnityEngine;

public class Skywalker_MovingPlatform : MonoBehaviour
{
    public float speed = 2f;
    public float distance = 3f;
    private Vector3 startPos;
    public bool reverse;
    void Start()
    {
        startPos = transform.position;
    }

    void Update()
    {
        if (!reverse)
        {
            transform.position = startPos + Vector3.down * Mathf.PingPong(Time.time * speed, distance);
        }
        else
        {
            transform.position = startPos + Vector3.up * Mathf.PingPong(Time.time * speed, distance);
        }

    }
}