ProjectZ/Assets/Scripts/Environment/Energy/CellSpawner.cs

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

public class CellSpawner : NetworkBehaviour
{
    public GameObject prefab;
    public float spawnTime;
    private int _maxConnections;
    
    private CustomNetworkManager _networkManager;
    private GameObject _instance;
    private bool _spawnStarted = false;
    private float _timer;
    

    void Start()
    {
        if (!isServer) return;
        _networkManager = NetworkManager.singleton.GetComponent<CustomNetworkManager>();
        _maxConnections = _networkManager.maxConnections;
        SpawnPref();
    }

    void FixedUpdate()
    {
        if (!isServer || _maxConnections <= 0) return;

        if (_instance == null && _spawnStarted == false)
        {
            _spawnStarted = true;
        }

        if (_spawnStarted)
        {
            _timer += Time.fixedDeltaTime;
        }

        if (_timer >= 10)
        {
            _timer = 0;
            SpawnPref();
        }

    }
    
    void SpawnPref()
    {
        _instance = Instantiate(prefab, transform.position + transform.up * 1.2f, Quaternion.identity); //* 1.8f
        _instance.transform.SetParent(transform, false);
        NetworkServer.Spawn(_instance);
        _spawnStarted = false;
        _maxConnections--;
    }
}