Object Pool for Unity

ObjectPool

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

public class ObjectPool : MonoBehaviour
{
    [Header("Place here your objects to be spawned:")]
    public GameObject[] objectsToSpawn;

    private GameObject[] _objectsCollection;
    
    [Header("Manage your spawns:")]
    [Range(0.1f, 3f)]
    public float minSpawnTime;

    [Range(3.1f, 5f)]
    public float maxSpawnTime;
    
    public int poolSize;

    private float _spawnTime;
    private int _currentObject;
    
    // Start is called before the first frame update
    void Awake()
    {
        _spawnTime = calculateTime();
        _objectsCollection = new GameObject[poolSize];
        
        //llenar la pool
        for (int i = 0; i < poolSize; i++)
        {
            var objToPlace = objectsToSpawn[Random.Range(0, objectsToSpawn.Length)];
            var obj = Instantiate(objToPlace,transform.position,Quaternion.identity);
            _objectsCollection[i] = obj;
        }
        
        //desactivarlos todos
        foreach(GameObject go in _objectsCollection){
            go.SetActive(false);
        }
        InvokeRepeating(nameof(SpawnObjects), _spawnTime, _spawnTime);
    }

    void SpawnObjects()
    {
        if (_currentObject >= poolSize)
            _currentObject = 0;
        var victimObject = _objectsCollection[_currentObject];
            victimObject.SetActive(true);
            victimObject.transform.position = transform.position;
            _currentObject++;
    }

    float calculateTime()
    {
        return Random.Range(minSpawnTime, maxSpawnTime);
    }
}

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