add SyncedServerData

Assets/Prefabs/GameManager.prefab

@@ -29,6 +29,7 @@ GameObject:
   - component: {fileID: 6547606932669875539}
   - component: {fileID: 8970227709208402880}
   - component: {fileID: 3898620812402470502}
+  - component: {fileID: 5182370913446898971}
   m_Layer: 0
   m_Name: GameManager
   m_TagString: Untagged
@@ -378,3 +379,17 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: aabf0ed3019cb714e9079ac483b9a670, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+--- !u!114 &5182370913446898971
+MonoBehaviour:
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+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1297494511425690}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 40386a7e7b5eb5f42b596291c487277f, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_syncedServerDataPrefab: {fileID: 1597674083562683622, guid: f38745bb026a81e4c9711b36a5a262ae,
+    type: 3}

Assets/Prefabs/NetworkManager.prefab

@@ -69,6 +69,7 @@ MonoBehaviour:
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+  - {fileID: 1597674083562683622, guid: f38745bb026a81e4c9711b36a5a262ae, type: 3}
 --- !u!114 &4862460140142645991
 MonoBehaviour:
   m_ObjectHideFlags: 0

Assets/Prefabs/SyncedServerData.prefab

@@ -0,0 +1,63 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
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+  m_PrefabInstance: {fileID: 0}
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+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 7624085711834089393}
+  - component: {fileID: 234247405925470423}
+  - component: {fileID: 6555188705879957608}
+  m_Layer: 0
+  m_Name: SyncedServerData
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!4 &7624085711834089393
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+  m_LocalScale: {x: 1, y: 1, z: 1}
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+  m_Father: {fileID: 0}
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+  m_PrefabAsset: {fileID: 0}
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+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 9b91ecbcc199f4492b9a91e820070131, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  serverOnly: 0
+  localPlayerAuthority: 0
+  m_AssetId: f38745bb026a81e4c9711b36a5a262ae
+  m_SceneId: 0
+--- !u!114 &6555188705879957608
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+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
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+  m_Name: 
+  m_EditorClassIdentifier: 
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Assets/Prefabs/SyncedServerData.prefab.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: f38745bb026a81e4c9711b36a5a262ae
+PrefabImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Networking/SyncedBag.cs

@@ -16,6 +16,16 @@ namespace SanAndreasUnity.Net
         private readonly StringSyncDictionary m_syncDictionary;
         private readonly Dictionary<string, List<System.Action<string>>> m_callbacks = new Dictionary<string, List<Action<string>>>();
 
+        private class ArrayWrapper<T>
+        {
+            public T[] array;
+
+            public ArrayWrapper(T[] array)
+            {
+                this.array = array;
+            }
+        }
+
 
         public SyncedBag(StringSyncDictionary syncDictionary)
         {
@@ -69,6 +79,30 @@ namespace SanAndreasUnity.Net
             }
         }
 
+        public void SetCallbacks(SyncedBag other)
+        {
+            if (this == other)
+                return;
+
+            m_callbacks.Clear();
+            foreach (var callback in other.m_callbacks)
+            {
+                m_callbacks.Add(callback.Key, callback.Value);
+            }
+        }
+
+        public void SetData(SyncedBag other)
+        {
+            if (this == other)
+                return;
+
+            m_syncDictionary.Clear();
+            foreach (var pair in other.m_syncDictionary)
+            {
+                m_syncDictionary.Add(pair.Key, pair.Value);
+            }
+        }
+
         public void SetString(string key, string value)
         {
             if (m_syncDictionary.TryGetValue(key, out string existingValue))
@@ -123,12 +157,25 @@ namespace SanAndreasUnity.Net
             string str = GetString(key);
             if (str == null)
                 return null;
-            return JsonUtility.FromJson<string[]>(str);
+            return JsonUtility.FromJson<ArrayWrapper<string>>(str)?.array;
         }
 
         public void SetStringArray(string key, string[] array)
         {
-            SetString(key, JsonUtility.ToJson(array));
+            SetString(key, JsonUtility.ToJson(new ArrayWrapper<string>(array)));
+        }
+
+        public float[] GetFloatArray(string key)
+        {
+            string str = GetString(key);
+            if (str == null)
+                return null;
+            return JsonUtility.FromJson<ArrayWrapper<float>>(str)?.array;
+        }
+
+        public void SetFloatArray(string key, float[] array)
+        {
+            SetString(key, JsonUtility.ToJson(new ArrayWrapper<float>(array)));
         }
     }
 }

Assets/Scripts/Networking/SyncedServerData.cs

@@ -0,0 +1,54 @@
+using Mirror;
+using UnityEngine;
+
+namespace SanAndreasUnity.Net
+{
+    public class SyncedServerData : NetworkBehaviour
+    {
+        public static SyncedServerData Instance { get; private set; }
+
+        SyncedBag.StringSyncDictionary _syncDictionary = new SyncedBag.StringSyncDictionary();
+
+        public static SyncedBag Data { get; private set; } = new SyncedBag(new SyncedBag.StringSyncDictionary());
+
+
+
+        private void Awake()
+        {
+            if (Instance != null)
+            {
+                Debug.LogError($"{nameof(SyncedServerData)} object already exists. There should only be 1.");
+                Destroy(this.gameObject);
+                return;
+            }
+
+            Instance = this;
+
+            var oldData = Data;
+
+            if (NetStatus.IsServer)
+            {
+                _syncDictionary = new SyncedBag.StringSyncDictionary();
+                var newData = new SyncedBag(_syncDictionary);
+                newData.SetData(oldData);
+                newData.SetCallbacks(oldData);
+
+                Data = newData;
+            }
+            else
+            {
+                _syncDictionary = new SyncedBag.StringSyncDictionary();
+                var newData = new SyncedBag(_syncDictionary);
+                newData.SetCallbacks(oldData);
+                Data = newData;
+            }
+
+        }
+
+        private void OnDisable()
+        {
+            // clear data for next server start
+            Data = new SyncedBag(new SyncedBag.StringSyncDictionary());
+        }
+    }
+}

Assets/Scripts/Networking/SyncedServerData.cs.meta

@@ -0,0 +1,11 @@
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+guid: e09317a94d2d54949a17300f40dd6d3d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
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Assets/Scripts/Networking/SyncedServerDataObjectSpawner.cs

@@ -0,0 +1,40 @@
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace SanAndreasUnity.Net
+{
+    public class SyncedServerDataObjectSpawner : MonoBehaviour
+    {
+        [SerializeField] private GameObject m_syncedServerDataPrefab = null;
+
+
+        private void Start()
+        {
+            NetManager.Instance.onServerStatusChanged += OnServerStatusChanged;
+            SceneManager.activeSceneChanged += OnActiveSceneChanged;
+        }
+
+        private void OnServerStatusChanged()
+        {
+            // scene is not changed yet, so the object will get destroyed when it changes
+            //Spawn();
+        }
+
+        private void OnActiveSceneChanged(Scene arg0, Scene arg1)
+        {
+            Spawn();
+        }
+
+        private void Spawn()
+        {
+            if (!NetStatus.IsServer)
+                return;
+
+            if (null != SyncedServerData.Instance)
+                return;
+
+            var go = Instantiate(m_syncedServerDataPrefab);
+            NetManager.Spawn(go);
+        }
+    }
+}

Assets/Scripts/Networking/SyncedServerDataObjectSpawner.cs.meta

@@ -0,0 +1,11 @@
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