질문이 많아서 죄송한데여

자꾸 막히니까 포기하고싶네요;;

using System.Collections;
using System.Collections.Generic;
using UnityEngine;


public class rtan : MonoBehaviour
{
    float direction = 0.05f;


    // Start is called before the first frame update
    void Start()
    {


    }


    // Update is called once per frame
    void Update()
    {
        if (transform.position.x > 2.8f)
        {
            direction = -0.05f;
        }
        if (transform.position.x < 2.8f)
        { 
              direction = 0.05f;
    }
            transform.position += new Vector3(direction, 0, 0);
    }
}