Proposed: Replicate sync 100’000 entities using a solution (Revision 1)

  • Status: proposed
  • Deciders: V-Sekai,fire,
  • Tags: V-Sekai,sync,view replication,

Context and Problem Statement

Develop a performant and robust (correctly and with liveness) network entity sync in V-Sekai.

A client is one Godot Engine connection, it can view and change entities.

There are 100’000 networked entities in a city and we go from position a to position b in a loop in a mover with one or more attached cabins.

Describe the proposed option and how it helps to overcome the problem or limitation

This document is a general problem statement.

Positive Consequences

  • Large sims!

Negative Consequences

Option graveyard:

  • Option: Current V-Sekai replication
  • Rejection Reason: Can’t link servers

If this enhancement will not be used often, can it be worked around with a few lines of script?

Entity replication is not trivial.

Is there a reason why this should be core and done by us?

We’re doing the networking layer.

References

Questions

How many clients can be in this simulation?

The state database should be smaller to avoid replication traffic on non-liveliness.

Math

The calculation of who to pair and to find nearby or relevant players is a N^2 loop. Use better algorithms to lower O (N^2) into O (N log N).

The proposed solution can be solved in O (N log N).

Derivative License

Copyright (c) 2022 V-Sekai contributors.

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