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[0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Tue Jan 22, 2019 5:30 am
by Marshal313
I'm not sure about the underlying network implementations, But I guess (due to the way game acts in network plays) that many network updates are implemented by a pessimistic algorithm, which means clients update visuals after their input was sent to server and after they received a reply from server. Though there are Optimistic updates for some cases (like player movements), There are still updates which look too laggy on client-side due to (at least looks like it's due to) having a pessimistic update algorithm. For example, when driving a car it takes a long time to update the client, which makes it quiet impossible to play on slower internet connections.
I think at least movements (including car movements) should be updated the same way player movements are.
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Tue Jan 22, 2019 8:05 am
by Rseding91
Thanks for the report however that's a feature suggestion not a bug.
Every thing we add to the latency system is essentially code duplication of the normal game logic. Something like walking is fairly simple but car driving has a ton of variables and as such we haven't added it to the latency system.
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Tue Jan 22, 2019 3:30 pm
by Marshal313
Thanks for your reply.
I think it should have a high priority, since even on LAN networks using cars is too laggy.
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Wed Jan 23, 2019 8:25 am
by rldml
Hello all,
is there some sort of wikipage or similar where i can learn something about these concepts? It makes me nervous that i don't have any clue what you're talking about
Greetings, Ronny
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Wed Jan 23, 2019 8:39 am
by Koub
rldml wrote: ↑Wed Jan 23, 2019 8:25 am
Hello all,
is there some sort of wikipage or similar where i can learn something about these concepts? It makes me nervous that i don't have any clue what you're talking about
Greetings, Ronny
Search for "Latency hiding". I think this should help you get any answers you need
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Wed Jan 23, 2019 9:04 am
by rldml
Koub wrote: ↑Wed Jan 23, 2019 8:39 am
Search for "Latency hiding". I think this should help you get any answers you need
AWESOME!
I've did this within bing with your search words and one of the first hits is
https://www.factorio.com/blog/post/fff-83 
That's exactly what i searched for, thx
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Thu Jan 24, 2019 3:14 am
by bobucles
The one thing that should be optimistic is the pipette tool. It's super annoying to have it be so laggy.
Re: [0.16.51] Multiplayer Networking should use Optimistic updates instead of Pessimistic
Posted: Thu Jan 24, 2019 5:49 am
by Rseding91
bobucles wrote: ↑Thu Jan 24, 2019 3:14 am
The one thing that should be optimistic is the pipette tool. It's super annoying to have it be so laggy.
It already is.