fix: adjust the timing of Multiverse readiness.

Assets/Scripts/Gameplay/Lobby/MultiverseRoomAPI.cs

         private readonly string baseUrl = "https://s.unity.cn/service/rooms";   // room api url
 
         // Please fill in the required fields
-        private readonly string appId = "";                 // app id
-        private readonly string appSecret = "";             // app secret
-        private readonly string gameRegionId = "";          // game region id
-        private readonly string multiverseProfileId = "";   // multiverse profile id
+        private readonly string appId = "eb6feb70-2872-416c-846a-d850f64f45d5";                 // app id
+        private readonly string appSecret = "c17e41a492f748f4a1e2fdc4c927f6e8";             // app secret
+        private readonly string gameRegionId = "7bba5ff1-b4a3-498c-9c0b-24cad73cff54";          // game region id
+        private readonly string multiverseProfileId = "8ea5c9bc-a214-47cf-98c4-4ad550e29ee7";   // multiverse profile id
 
         public string IP { get; private set; } = "";
         public ushort Port { get; private set; } = 0;

Assets/Scripts/Gameplay/Lobby/MultiverseSDK.cs

 using System.Threading.Tasks;
 using Unity.Cn.Multiverse;
 using UnityEngine;
+using UnityEngine.TextCore.Text;
 
 namespace Unity.MegaCity.Gameplay
 {
                 Application.Quit();
                 return;
             }
+            Debug.Log("Multiverse is created");
+        }
-            await Task.Delay(3000);  // wait 3 seconds for the server to be ready
+        public async void ReadyMultiverse()
+        {
+            // wait until multiverse created
+            while(m_Multiverse == null)
+            {
+                Debug.Log("m_Multiverse is null");
+                await Task.Delay(100);
+            }
-            // mark server as ready
             bool ok = await m_Multiverse.Ready();
             if (!ok)
             {
             var gs = await m_Multiverse.GameServer();
             var gsAddress = gs.Status.Address;
             var gsPort = gs.Status.Ports[0].Port;
-            Debug.Log("--------------------\n" +
-                       "Multiverse Game Server\n" +
-                      $"Address: {gsAddress}" + "\n" +
-                      $"Port: {gsPort}" + "\n" +
-                       "--------------------");
+            Debug.Log($"Multiverse is Ready, IP:{gsAddress}, Port:{gsPort}");
         }
 
         // Auto shutdown the multiverse in TTL seconds if there is no player connected.

Assets/Scripts/Gameplay/Netcode/NetcodeBootstrap.cs

     public class NetCodeBootstrap : ClientServerBootstrap
     {
         public static NetworkEndpoint MegaCityServerIp => NetworkEndpoint.Parse("128.14.159.58", 7979);
-        public MultiverseSdk m_Multiverse;
 
         /// <summary>
         /// Limitation imposed to ensure UTP send/receiveQueueSize's are set appropriately.
 
         private NativeList<float3> m_UsedPositions;
         private Mathematics.Random m_Random;
+        private bool m_IsInitialized;
+            m_IsInitialized = false;
             state.RequireForUpdate<PlayerSpawner>();
             state.RequireForUpdate<SpawnPointElement>();
             m_UsedPositions = new NativeList<float3>(Allocator.Persistent);
 
         public void OnUpdate(ref SystemState state)
         {
+#if UNITY_SERVER && !UNITY_EDITOR
+            if(!m_IsInitialized)
+            {
+                m_IsInitialized = true;
+                MultiverseSDKWrapper.Instance.ReadyMultiverse();
+            }
+#endif
             var spawnBuffer = GetSingletonBuffer<SpawnPointElement>();
             var prefab = GetSingleton<PlayerSpawner>().Player;
             var cmdBuffer = new EntityCommandBuffer(Allocator.Temp);

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