fix: NetworkShow client synchronization duplicate players and NetworkShow with ChangeOwnership fixes [Backport]#3493
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The PR resolves the issue discovered when investigating the [Forum-1651980 issue](https://discussions.unity.com/t/netcode-for-gameobjects-2-4-0-released/1651980/2). The initial client synchronization pre-serialization preparation was not excluding any spawned `NetworkObject` instances that had a pending visibility update for the client being synchronized. This fix adds this check to that process. [MTTB-1372](https://jira.unity3d.com/browse/MTTB-1372) ## Changelog - Fixed: Issue where the initial client synchronization pre-serialization process was not excluding spawned `NetworkObjects` that already had pending visibility for the client being synchronized. ## Testing and Documentation - Includes the `PlayerSpawnObjectVisibilityTests`. - No documentation changes or additions were necessary. <!-- Uncomment and mark items off with a * if this PR deprecates any API: ### Deprecated API - [ ] An `[Obsolete]` attribute was added along with a `(RemovedAfter yyyy-mm-dd)` entry. - [ ] An [api updater] was added. - [ ] Deprecation of the API is explained in the CHANGELOG. - [ ] The users can understand why this API was removed and what they should use instead. --> ## Backport This requires a backport to v1.0 (#3493)
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The PR resolves the issue discovered when investigating the Forum-1651980 issue. The initial client synchronization pre-serialization preparation was not excluding any spawned
NetworkObjectinstances that had a pending visibility update for the client being synchronized. This fix adds this check to that process.MTTB-1372
This addresses the Forum-Support-1646996 issue where it was determined if you invoke
NetworkObject.NetworkShowand then immediately invokeNetworkObject.ChangeOwnership(or somewhere within the same callstack for that frame) the target client will get an error regarding an unnecessaryChangeOwnershipMessage.MTTB-1337
Changelog
NetworkObjectsthat already had pending visibility for the client being synchronized.NetworkObject.NetworkShowandNetworkObject.ChangeOwnershipconsecutively within the same call stack location could result in an unnecessary change in ownership error message generated on the target client side.Testing and Documentation
Backport
This is a back port of #3488.
This is a partial back port of #3468.