enable and disable loop objects in the scene

Question

I would like to create a loop of activation and deactivation of objects in the hierarchy, when the game starts instantiate all objects, then they are deactivated, and through a method should reactivate every 10 seconds. I tried this code but it doesn’t work!! using System.Collections; using System.Collections.Generic; using UnityEngine;

 public class EnemySpawner : MonoBehaviour
 {
     public ObjectEnemyData objectEnemyData; //scriptableObject that contains the variable with the gameobject list
     public EnemyData enemyData;  //scriptableObject that contains the characteristics of the single object
     public float startTimer = 0f;
     public float spawnTimer = 3f;
     GameObject go;
 
 
     public void Start()
     {
 
         for (int i = 0; i < objectEnemyData.enemy.Count; i++)
         {
 
             go = Instantiate(objectEnemyData.enemy[i]);
             go.SetActive(false);
 
         }
     }
 
     public void RandomActive()
     {
         startTimer += Time.deltaTime;
 
         if (startTimer >= spawnTimer)
         {
             int randomActive = Random.Range(0, objectEnemyData.enemy.Count);
             objectEnemyData.enemy[randomActive].SetActive(true);
             startTimer = 0f;
             Debug.Log(randomActive);
         }
     }
     private void Update()
     {
         RandomActive();
     }
 }

Answer 1

Best Answer

Answer by tyruji · 3 days ago

The problem is you are not referencing your instantiated objects, instead you are messing with prefabs in your ScriptableObject directly. What you could do is store every enemy instance in a separate array and work on that.

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ankios · 3 days ago 0

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OK I think I understand the logic, you could give me a small example of code please?

tyruji · 3 days ago 0

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Sure, there you go:

  public class EnemySpawner : MonoBehaviour
  {
      // ... 
      public ObjectEnemyData objectEnemyData;
      
      private GameObject[] _enemies = null;  // the array field
  
      public void Start()
      {
          // allocating the array
          _enemies = new GameObject[ objectEnemyData.enemy.Count ];
 
          for (int i = 0; i < objectEnemyData.enemy.Count; i++)
          {
              // set the enemies in your array when instantiating
              _enemies[ i ] = go = Instantiate(objectEnemyData.enemy[i]);
              go.SetActive(false);
  
          }
      }
  
      public void RandomActive()
      {
           // ... 
              int randomActive = Random.Range( 0,
                                     objectEnemyData.enemy.Count );
              _enemies[ randomActive ].SetActive( true ); 
             // and just use the instantiated game objects
      }

I deleted some lines for clarity, hope it helps.

ankios tyruji · 3 days ago 0

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you're very kind, thanks!

enable and disable loop objects in the scene

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