Network Identity
The Network Identity component is at the heart of the Unity networking high-level API. It controls a GameObject’s unique identity on the network, and it uses that identity to make the networking system aware of the GameObject.
| Propiedad: | Función: |
|---|---|
| Server Only | Tick this checkbox to ensure that Unity only spawns the GameObject on the server, and not on clients. |
| Local Player Authority | Tick this checkbox to give authoritative network control of this GameObject to the client that owns it. The player GameObject on that client has authority over it. Other components such as Network Transform use this to determine which client to treat as the source of authority. |
Instantiated network GameObjects
With the Unity’s server-authoritative networking system, the server must spawn networked GameObjects with network identities, using NetworkServer.Spawn. This automatically creates them on clients that are connected to the server, and assigns them a NetworkInstanceId.
You must put a Network Identity component on any Prefabs that spawn at runtime for the network system to use them. See Object Spawning for more information.
Scene-based network GameObjects
You can also network GameObjects that are saved as part of your Scene (for example, environmental props). Networking GameObjects makes them behave slightly differently, because you need to have them spawn across the network.
When building your game, Unity disables all Scene-based GameObjects with Network Identity components. When a client connects to the server, the server sends spawn messages to tell the client which Scene GameObjects to enable and what their most up-to-date state information is. This ensures the client’s game does not contain GameObjects at incorrect locations when they start playing, or that Unity does not spawn and immediately destroy GameObjects on connection (for example, if an event removed the GameObject before that client connected). See Networked Scene GameObjects for more information.
Network Information in the preview pane
This component contains network tracking information, and displays that information in the preview pane. For example, the scene ID, network ID and asset ID the object has been assigned. This allows you to inspect the information which can be useful for investigation and debugging.
The scene ID is valid in all scene objects with a NetworkIdentity component. The network ID is the ID of this particular object instance. There might be multiple objects instantiated from a particular prefab, and the network ID is used to identity which object a network update should be applied to. The asset ID refers to which source asset the object was instantiated from. This is used internally when a particular GameObject prefab is spawned over the network.
En tiempo de ejecución hay más información que mostrar aquí (un NetworkBehaviour desactivado se muestra sin negrilla):
Preview Pane Information
| Propiedad | Descripción |
|---|---|
| assetId | Esto identifica el prefab asociado a este objeto (para la aparición). |
| clientAuthorityOwner | El cliente tiene autoridad para este objeto. Este será null si ningún cliente tiene autoridad. |
| connectionToClient | The NetworkConnection associated with this NetworkIdentity. This is only valid for player objects on the server. |
| connectionToServer | The NetworkConnection associated with this NetworkIdentity. This is only valid for player objects on a local client. |
| hasAuthority | True if this object is the authoritative version of the object. This would mean either on a the server for normal objects, or on the client with localPlayerAuthority. |
| isClient | True, si el objeto está corriendo en un cliente. |
| isLocalPlayer | Devuelve true si este objeto es el que representa al jugador en la máquina local. |
| isServer | True, si este objeto está corriendo en el servidor, y ha sido generado. |
| localPlayerAuthority | True si este objeto es controlado por el Cliente el cual es dueño - el objeto jugador local en ese cliente tiene autoridad sobre este. Este es utilizado por otros componentes tal como NetworkTransform. |
| netId | Un identificador único para esta sesión de red, asignado cuando aparezca el objeto. |
| observers | La lista de NetworkConnections que son capaces de ver este objeto. Esto es solo de lectura. |
| playerControllerId | El identificador del controller (controlador) asociado con este objeto. Solamente válido para objetos jugador. |
| SceneId | A unique identifier for networked objects in a Scene. This is only populated in play-mode. |
| serverOnly | Una bandera (flag) para hacer que este objeto no aparezca en los clientes. |
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