# Networking & Replication Notes

### Networking & Replication Notes

#### Replication overview (v1.1)

Zones are replication-ready:

* `AGravityZoneBase` replicates:
  * `Settings` (mode, strength, point/direction, falloff)
  * `Priority`
  * Tag/Class filter settings
  * `ZoneGuid` (stable ID)
* Shape parameters replicate:
  * `AGravityZoneBox::BoxExtent` (ReplicatedUsing)
  * `AGravityZoneSphere::Radius` (ReplicatedUsing)

#### Deterministic zone selection (important)

If multiple zones overlap the same point:

* Highest `Priority` wins
* If `Priority` ties, the plugin uses `ZoneGuid` as a deterministic tie-break\
  → prevents client/server choosing different zones.

#### Physics object consistency (recommended)

For replicated physics actors, the plugin provides a helper mode via `CustomGravityComponent`:

`NetworkPhysicsMode`

* **Off**: do nothing (advanced users)
* **Warn**: detects common “physics drift” setups and prints guidance
* **Auto**: server-authoritative fix:
  * server: ensure Replicates + ReplicateMovement
  * clients: disable SimulatePhysics to prevent divergence

> This is a practical approach: physics replication in UE is sensitive; the plugin helps you avoid the “starts the same, drifts later” issue.


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