Infinte runner ground loading on trigger not working

Questions & Answers
1

Hi guys, I know this is a topic that has probably been done to death but I have not been able to find a solution as yet in all the answers.unity world and google combined. Ok so here’s the run down, I am doing a Diploma in interactive Gaming and one of my last units/modules is to make a game for mobiles, I have chosen to do an infinite runner based on a popular kids bedtime story (I have 4 kids) I have been following along with unity’s infinite 2D runner as well as many others from coffeebreak and ninjacupcake83 (I have been using his the most as it closely resembles what I wish to achieve). I have Instantiated a prefab clone of my “floor” to begin with so the player can stand upon something, I have also added a collider trigger towards the end of the “floor” which is meant to instanitate the next bit of “floor” and then delete the prefab behind me. the problem is a warning that says this

“Destroying assets is not permitted to avoid data loss.
If you really want to remove an asset use DestroyImmediate (theObject, true);
UnityEngine.Object:Destroy(Object)
GroundSpawn:OnTriggerExit(Collider) (at Assets/Scripts/GroundSpawn.cs:29)”

My code is as follows

    using UnityEngine;
    using System.Collections;
    
    public class GroundSpawn : MonoBehaviour
    {
    	// Call prefab to assign
    	public GameObject worldClone;
    	
    	// Offset for spawning ground
    	public float groundOffset = 0
    	;
    	
    	// Prefabs position (x, y, z)
    	public Vector3 groundSpawn = new Vector3 (0, 0, 0);
    	
    	// Box Collider set up with a enter trigger function
    	void OnTriggerEnter (Collider other)
    	{
    		// Spawn ground on the z axis where collider centers
    		groundSpawn = new Vector3 (0, 0, transform.position.z + groundOffset);
    		Instantiate (worldClone, groundSpawn, Quaternion.identity);
    
    	}
    	
    	// Box Collider set up with a exit trigger function
    	void OnTriggerExit(Collider other)
    	{
    		// Removes prefabs on exit of Collider
    		Destroy (worldClone);
    	}
    }
2

You are trying to destroy the asset you dragged onto the inspector. Use this modified Script.

    using UnityEngine;
     using System.Collections;
     
     public class GroundSpawn : MonoBehaviour
     {
         // Call prefab to assign
         public GameObject worldClone;
         GameObject _currentGround;

         // Offset for spawning ground
         public float groundOffset = 0 ;
         
         // Prefabs position (x, y, z)
         public Vector3 groundSpawn = new Vector3 (0, 0, 0);
         
         // Box Collider set up with a enter trigger function
         void OnTriggerEnter (Collider other)
         {
             // Spawn ground on the z axis where collider centers
             groundSpawn = new Vector3 (0, 0, transform.position.z + groundOffset);
             _currentGround = Instantiate (worldClone, groundSpawn, Quaternion.identity) as GameObject;
     
         }
         
         // Box Collider set up with a exit trigger function
         void OnTriggerExit(Collider other)
         {
             // Removes prefabs on exit of Collider
             Destroy (_currentGround);
         }
     }