Unity-Technologies / Unity-Technologies/com.unity.netcode.gameobjects

Is it posible to implement ServerRewind with NetworkTransform?

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type:support
Dominant language
C#
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Description

Hello, im currently studying Unity and I started not so long ago using Netcode for GameObjects.

I started following the Unity docs and everything went smoothly until I faced NetworkTransforms, I tried movement with server autority and client autority, witch both worked fine, however I was unable to make a ServerRewind movement method.

I tried having multiple NetworkTransforms with changed autorities (with OnIsServerAuthoritative true and false) and changing them in runtime, needless to say, this didn't work nor changing the OnIsServerAuthoritative method via variable as the method seems to only been called once.

I searched for ways to implement ServerRewind in Netcode for GameObjects but I found zero information about it.

Eventually I managed to do it using 2 NetworkVariables, with write permisions both on server and client and exchanging them values whenever needed (I have an example in my repo if anyone is curious).

I know that ServerRewind is currently on the roadmap, but as it is currently, is there any way for implementing it with NetworkTransforms?

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the NetworkTransform documentation and the ServerRewind roadmap entry, then compare their authority behavior with the two-NetworkVariable example in the linked repository. Determine whether runtime authority changes and rewind support are intended, and document the supported approach or the scope of the required NetworkTransform changes.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, unity
Domain
game-dev, networking
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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