Networking Unity多人游戏玩家产卵不工作

您好，我已经研究这个问题3天了，我想不出它出了什么问题。我收到的错误消息是“为玩家（克隆）（UnityEngine.GameObject）生成对象，NetworkServer未处于活动状态。在没有活动服务器的情况下无法生成对象。”我知道服务器启动正常，因为当我使用客户端连接到它，然后关闭服务器时，客户端会说服务器可能已关闭。这是我到目前为止的代码提前谢谢

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必须从“is server”块中调用NetworkServer.Spawn（）

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Networking;
using System.Collections;

public class MENU_CONTROLLER : NetworkBehaviour
{
    public GameObject ipField;
    public GameObject connectButton;
    public GameObject hostButton;
    public GameObject player;

    public Text ip;
    public Text PlayerCount;
    private int playercount = 0;
    void Update() {
    }
    void vanishMenu() {
        ipField.SetActive(false);
        connectButton.SetActive(false);
        hostButton.SetActive(false);
    }

    public void ServerConnect() {
        Network.Connect(ip.text.ToString(), 4444);
        vanishMenu();
        SpawnPlayer();
    }
    public void SpawnPlayer() {
        GameObject p = (GameObject)Instantiate(player, transform.position,transform.rotation);
        NetworkServer.Spawn(p);
    }
    public void ServerStart() {
        Network.InitializeServer(30, 4444, true);
        Network.Connect("localhost", 4444);
        SpawnPlayer();
    }
    void OnPlayerConnected(NetworkPlayer player) {
        playercount++;
        print("PLAYER CONNECTED");
        print(player.ipAddress);
        PlayerCount.text = playercount.ToString();
    }
}

if (is Server) {
//do your thing to spawn
}