refactor: improvements to visiblity system

Assets/Mirage/Components/BaseVisibilityInspector.cs

@@ -0,0 +1,46 @@
+using Mirage.InterestManagement;
+using UnityEngine;
+
+namespace Mirage.Components
+{
+    public abstract class BaseVisibilityInspector : MonoBehaviour
+    {
+        #region Fields
+
+        private protected ServerObjectManager ServerObjectManager;
+        private protected INetworkVisibility NetworkVisibility;
+
+        #endregion
+
+        #region Mirage Callbacks
+
+        private void OnServerStarted()
+        {
+            NetworkVisibility?.Startup();
+        }
+
+        private void OnServerStopped()
+        {
+            NetworkVisibility?.ShutDown();
+        }
+
+        #endregion
+
+        #region Unity Methods
+
+        protected virtual void Awake()
+        {
+            ServerObjectManager ??= FindObjectOfType<ServerObjectManager>();
+
+            ServerObjectManager.Server.Started.AddListener(OnServerStarted);
+            ServerObjectManager.Server.Stopped.AddListener(OnServerStopped);
+        }
+
+        private void Destroy()
+        {
+            NetworkVisibility = null;
+        }
+
+        #endregion
+    }
+}