I can't figure it out.

Hello there,

Could you give us a little more information please? Like post your code, tell us what you are trying to do, describe which components are on your objects, etc... We can't help you if your question is that vague.

Other than that, you also need to upload the actual project (or a build) if you want us to test it. A scene file can't work without your scripts, assets, settings, etc...

UPDATE:

Site wouldn't let me post a new comment, so here it is:

I didn't make a prefab per say, but this will help you regardless. Just make a new script and call it "OnCollisionLoadScene". Then, you can place it on your cube.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.SceneManagement;
 
 [RequireComponent(typeof(Collider))]
 public class OnCollisionLoadScene : MonoBehaviour
 {
     [SerializeField] private string sceneToLoad = "";
 
     //Check Collision against all tags in this list
     [SerializeField] private List<string> list_tagsToWatchFor = new List<string>();
 
     // Enable OnCollisionEnter
     [SerializeField] private bool checkForCollision = false;
     // Enable OnTriggerEnter
     [SerializeField] private bool checkForTrigger = false;
     //Enable DistanceCheck
     [SerializeField] private bool checkForDistance = false;
     [SerializeField] private float distanceToCheck = 0.0f; // Radius to check
     [SerializeField] private float distanceCheckRefreshEvery = 0.0f; // Check for distance every X seconds
 
     private void Start()
     {
         if (checkForDistance)
             StartCoroutine(CheckForDistanceCoroutine());
     }
 
     private void OnCollisionEnter(Collision collision)
     {
         if (!checkForCollision)
             return;
 
         if (list_tagsToWatchFor.Contains(collision.gameObject.tag))
         {
             Debug.Log("COLLISION: LOAD SCENE");
             SceneManager.LoadScene(sceneToLoad);
         }
     }
 
     private void OnTriggerEnter(Collider collision)
     {
         if (!checkForTrigger)
             return;
 
         if (list_tagsToWatchFor.Contains(collision.gameObject.tag))
         {
             Debug.Log("TRIGGER: LOAD SCENE");
             SceneManager.LoadScene(sceneToLoad);
         }
     }
 
     private IEnumerator CheckForDistanceCoroutine()
     {
         while (checkForDistance)
         {
             List<GameObject> objectsToCheck = new List<GameObject>();
             foreach (string item in list_tagsToWatchFor)
                 objectsToCheck.AddRange(GameObject.FindGameObjectsWithTag(item));
 
             foreach (GameObject item in objectsToCheck)
             {
                 if (Vector3.Distance(transform.position, item.transform.position) <= distanceToCheck)
                 {
                     Debug.Log("DISTANCE: LOAD SCENE");
                     SceneManager.LoadScene(sceneToLoad);
                     break;
                 }
             }
 
             yield return new WaitForSeconds(distanceCheckRefreshEvery);
         }
         yield return null;
     }
 
     //Purely for distance vizualisation in the scene
 #if UNITY_EDITOR
     private void OnDrawGizmos()
     {
         Gizmos.color = new Color(0.65f, 0.0f, 0.0f, 0.25f);
         Gizmos.DrawSphere(transform.position, distanceToCheck);
     }
 #endif
 }
 

• The collision works IF your player has a Collider NOT trigger and a rigidbody.

• The TRIGGER collision works IF your player has a Collider trigger and a rigidbody.

• The distance check works continuously as long as you have it enabled.

Don't forget to fill the fields you need in the inspector before using it!

Hope that helps!

Cheers,

~LegendBacon