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Assets/Mirror/Examples/AdditiveScenes/Scripts/AdditiveNetworkManager.cs

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+using System.Collections;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace Mirror.Examples.AdditiveScenes
+{
+    [AddComponentMenu("")]
+    public class AdditiveNetworkManager : NetworkManager
+    {
+        [Tooltip("Trigger Zone Prefab")]
+        public GameObject Zone;
+
+        [Scene]
+        [Tooltip("Add all sub-scenes to this list")]
+        public string[] subScenes;
+
+        public override void OnStartServer()
+        {
+            base.OnStartServer();
+
+            // load all subscenes on the server only
+            StartCoroutine(LoadSubScenes());
+
+            // Instantiate Zone Handler on server only
+            Instantiate(Zone);
+        }
+
+        public override void OnStopServer()
+        {
+            StartCoroutine(UnloadScenes());
+        }
+
+        public override void OnStopClient()
+        {
+            if (mode == NetworkManagerMode.Offline)
+                StartCoroutine(UnloadScenes());
+        }
+
+        IEnumerator LoadSubScenes()
+        {
+            Debug.Log("Loading Scenes");
+
+            foreach (string sceneName in subScenes)
+                yield return SceneManager.LoadSceneAsync(sceneName, LoadSceneMode.Additive);
+        }
+
+        IEnumerator UnloadScenes()
+        {
+            Debug.Log("Unloading Subscenes");
+
+            foreach (string sceneName in subScenes)
+                if (SceneManager.GetSceneByName(sceneName).IsValid() || SceneManager.GetSceneByPath(sceneName).IsValid())
+                    yield return SceneManager.UnloadSceneAsync(sceneName);
+
+            yield return Resources.UnloadUnusedAssets();
+        }
+    }
+}

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Assets/Mirror/Examples/AdditiveScenes/Scripts/ShootingTankBehaviour.cs

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+using UnityEngine;
+
+namespace Mirror.Examples.AdditiveScenes
+{
+    // This script demonstrates the NetworkAnimator and how to leverage
+    // the built-in observers system to track players.
+    // Note that all ProximityCheckers should be restricted to the Player layer.
+    public class ShootingTankBehaviour : NetworkBehaviour
+    {
+        [SyncVar]
+        public Quaternion rotation;
+
+        NetworkAnimator networkAnimator;
+
+        [ServerCallback]
+        void Start()
+        {
+            networkAnimator = GetComponent<NetworkAnimator>();
+        }
+
+        [Range(0, 1)]
+        public float turnSpeed = 0.1f;
+
+        void Update()
+        {
+            if (isServer && netIdentity.observers.Count > 0)
+                ShootNearestPlayer();
+
+            if (isClient)
+                transform.rotation = Quaternion.Slerp(transform.rotation, rotation, turnSpeed);
+        }
+
+        [Server]
+        void ShootNearestPlayer()
+        {
+            GameObject target = null;
+            float distance = 100f;
+
+            foreach (NetworkConnectionToClient networkConnection in netIdentity.observers.Values)
+            {
+                GameObject tempTarget = networkConnection.identity.gameObject;
+                float tempDistance = Vector3.Distance(tempTarget.transform.position, transform.position);
+
+                if (target == null || distance > tempDistance)
+                {
+                    target = tempTarget;
+                    distance = tempDistance;
+                }
+            }
+
+            if (target != null)
+            {
+                transform.LookAt(new Vector3(target.transform.position.x, 0, target.transform.position.z));
+                rotation = transform.rotation;
+                //networkAnimator.SetTrigger("Shoot");
+            }
+        }
+    }
+}

Assets/Mirror/Examples/AdditiveScenes/Scripts/ShootingTankBehaviour.cs.meta

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Assets/Mirror/Examples/AdditiveScenes/Scripts/ZoneHandler.cs

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+using UnityEngine;
+
+namespace Mirror.Examples.AdditiveScenes
+{
+    // AdditiveNetworkManager, in OnStartServer, instantiates the prefab only on the server.
+    // It never exists for clients (other than host client if there is one).
+    // The prefab has a Sphere Collider with isTrigger = true.
+    // These OnTrigger events only run on the server and will only send a message to the
+    // client that entered the Zone to load the subscene assigned to the subscene property.
+    public class ZoneHandler : MonoBehaviour
+    {
+        [Scene]
+        [Tooltip("Assign the sub-scene to load for this zone")]
+        public string subScene;
+
+        [ServerCallback]
+        void OnTriggerEnter(Collider other)
+        {
+            // ignore collisions with non-Player objects
+            if (!other.CompareTag("Player")) return;
+
+            if (other.TryGetComponent(out NetworkIdentity networkIdentity))
+            {
+                SceneMessage message = new SceneMessage { sceneName = subScene, sceneOperation = SceneOperation.LoadAdditive };
+                networkIdentity.connectionToClient.Send(message);
+            }
+        }
+
+        [ServerCallback]
+        void OnTriggerExit(Collider other)
+        {
+            // ignore collisions with non-Player objects
+            if (!other.CompareTag("Player")) return;
+
+            if (other.TryGetComponent(out NetworkIdentity networkIdentity))
+            {
+                SceneMessage message = new SceneMessage { sceneName = subScene, sceneOperation = SceneOperation.UnloadAdditive };
+                networkIdentity.connectionToClient.Send(message);
+            }
+        }
+    }
+}

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