物体在移动，但它没有改变方向，我不知道为什么。

这是名为'zackenblock'的对象的代码：

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

public class zackenblock_move : MonoBehaviour
{
    public static bool col = false;
    public float speed = 10f;

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

    void Update()
    {
        if (zackenblock_col.collosin != col)
        {
            col = zackenblock_col.collosin;
        }
    }

    // Update is called once per frame
    void FixedUpdate()
    {
        if (col == false){
            transform.Translate(Vector3.right * Time.deltaTime * speed);
        }
        else
        {
            transform.Translate(Vector3.left * Time.deltaTime * speed);
        }

        /*if (Input.GetKey(KeyCode.M))
        {
            col = true;
        }*/
    }
    void OnCollisionEnter(Collision collision){
        //Check for a match with the specified name on any GameObject that collides with your GameObject
        if (collision.gameObject.name == "Level1_part2")
        {
            //If the GameObject's name matches the one you suggest, output this message in the console
            Debug.Log("Do something here");
            col = true;
        }

        else if (collision.gameObject.name == "Level")
        {
            //If the GameObject's name matches the one you suggest, output this message in the console
            Debug.Log("Do something here");
            col = false;
        }
    }
    /*IEnumerator waiter_not_that_waiter_just_waiter(){
        yield return new waitforseconds(3f);
        //my code here after 3 seconds
        transform.Translate(Vector3.right * Time.deltaTime);
        yield return new waitforseconds(3f);
        transform.Translate(Vector3.left * Time.deltaTime);
    }*/

}

这就是Tilemap中的代码

using System.Security.Cryptography;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class zackenblock_col : MonoBehaviour
{
    public static bool collosin;

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

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKey(KeyCode.M))
        {
            collosin = true;
        }
    }
    void OnCollisionEnter(Collision collision){
        //Check for a match with the specified name on any GameObject that collides with your GameObject
        if (collision.gameObject.name == "zackenblock")
        {
            //If the GameObject's name matches the one you suggest, output this message in the console
            Debug.Log("Do something here");
            collosin = true;
        }

        /*else if (collision.gameObject.name == "Level")
        {
            //If the GameObject's name matches the one you suggest, output this message in the console
            Debug.Log("Do something here");
            collosin = false;
        }*/
    }
}

以下是一些截图：
Unity和对象的屏幕截图：

Unity和切片图的屏幕截图：

Unity和Tilemap2的屏幕截图：

物体应该向右移动，当它碰撞时，然后向左移动。
它只不停地向右移动。