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Assets/ThirdParty/Mirror/Examples/AssignAuthority/Scripts/OwnerBehaviour.cs

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+using System;
+using UnityEngine;
+using Random = UnityEngine.Random;
+
+namespace Mirror.Examples.AssignAuthority
+{
+    [AddComponentMenu("")]
+    public class OwnerBehaviour : NetworkBehaviour
+    {
+        [SyncVar(hook = nameof(OnSecretCodeChanged))]
+        int secretCode;
+        public float NewCodeInterval = 5;
+        float newCodeElapsed;
+
+        public TextMesh CodeDisplay;
+
+        void Awake() =>
+            // Hide the display to start with
+            SetDisplay(false);
+
+        public override void OnStartAuthority() => SetDisplay(true);
+
+        public override void OnStopAuthority() =>
+            // Hide the display when we don't have authority anymore
+            SetDisplay(false);
+
+        public override void OnStartServer() => NewCode();
+
+        public override void OnStartClient()
+        {
+            // host mode: hide display
+            if (isServer) SetDisplay(false);
+        }
+
+        void Update()
+        {
+            newCodeElapsed += Time.deltaTime;
+            if (newCodeElapsed >= NewCodeInterval)
+            {
+                NewCode();
+                newCodeElapsed = 0;
+            }
+        }
+
+        protected override void OnValidate() => syncMode = SyncMode.Owner;
+
+        [Server]
+        public void NewCode() => secretCode = Random.Range(0, 9999);
+
+        void SetDisplay(bool show) =>
+            CodeDisplay.gameObject.SetActive(show);
+
+        void OnSecretCodeChanged(int _, int newCode)
+        {
+            CodeDisplay.text = newCode.ToString("0000");
+        }
+    }
+}