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Rollback Netcode in Brood War - Page last

Forum Index > BW General
9 CommentsPost a Reply
2Pacalypse-
Profile Joined October 2006
Croatia9561 Posts
1 hour ago
#1
[image loading]


Hey everyone, sorry for making yet another ShieldBattery-related thread, but this update deserves it imo. Considered a holy grail in competitive online games by many, especially in fighting games communities, rollback netcode basically eliminates the lagg and latency issues in majority of cases. You can now finally experience a true TR24 Low (or even lower!) latency against Koreans!

How it all works is a bit complicated (but not that much really), which is why we also produced this explainer video that goes into details a bit more for those who are interested:



Some TLDR notes on what rollback netcode gives you:
- Your commands respond immediately (even if the opponent is lagging)
- In a lot of games this means you get single-player latency, which is even lower than TR24 Low
- If your opponent is very laggy you might see their units "teleport" a little bit
- Even when playing with laggy opponents, you don't feel their lagg when controlling your own units

Anyway, give it a try at let us know what you think

Here's the full changelog: https://shieldbattery.net/news/AaEgEWi9dWWJg7Fawh0MLQ/the-rollback-revolution-is-here

gl hf gogogo
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Moderator"We're a community of geniuses because we've found how to extract 95% of the feeling of doing something amazing without actually doing anything." - Chill
Miragee
Profile Joined December 2009
8713 Posts
1 hour ago
#2
This is incredible, good job!
[sc1f]eonzerg
Profile Blog Joined February 2010
Belgium7174 Posts
55 minutes ago
#3
This is huge. Cuz this open to port to be able to play vs chinese players and koreans on a really good latency. Now you can do showmatches that is not breaking heads for everyone.

What do you mean by units teleporting tho ?

Sometimes in my games my hydra is running at a crazy speed all of sudden. Is it something similar ?
Dakota_Fanning *
Profile Joined January 2008
Hungary2371 Posts
53 minutes ago
#4
The title is a bit misleading, I thought you reverted to an old code version due to issues with the new one

Awesome job as always!
https://repmastered.icza.net
BLinD-RawR
Profile Blog Joined April 2010
ALLEYCAT BLUES51623 Posts
Last Edited: 2026-10-09 12:57:48
46 minutes ago
#5
On October 09 2026 21:50 Dakota_Fanning wrote:
The title is a bit misleading, I thought you reverted to an old code version due to issues with the new one

Awesome job as always!


if you're involved with the Fighting game scene in anyway the mere mention of rollback netcode is like witnessing god come down from the heavens.
Brood War EICWoo Jung Ho, never forget.| Twitter: @BLinDRawR
Miragee
Profile Joined December 2009
8713 Posts
39 minutes ago
#6
On October 09 2026 21:47 [sc1f]eonzerg wrote:
This is huge. Cuz this open to port to be able to play vs chinese players and koreans on a really good latency. Now you can do showmatches that is not breaking heads for everyone.

What do you mean by units teleporting tho ?

Sometimes in my games my hydra is running at a crazy speed all of sudden. Is it something similar ?


Without in-depth technical knowledge, from what I understood, rollback technologies depend on prediction. This means, if the actual action and the prediction stray too far appart and the lag is big, i.e. the time between alignment of reality and prediction becomes too long, it may cause units to teleport because their predicted position and their actual position are different by the time the alignment happens. I hope I explained this at least somewhat correctly. Please correct me, if I'm wrong.

What you are describing is somewhat is what the new netcode tries to circumvent. The fast stuttering units occur due to package loss/lag I think. The new netcode tries to fill these gaps with predicted positions.
intrepid1109
Profile Joined May 2023
19 Posts
32 minutes ago
#7
we protoss are not laggy
chrisolo
Profile Joined May 2009
Germany2614 Posts
Last Edited: 2026-10-09 13:37:06
12 minutes ago
#8
crazy... wish people (including myself sadly) would finally switch all over the SB. But even with this crazy update, it will be hard to motivate players to switch over. I will post this on the Fastest League page, but I doubt they will change over in massive waves


anyhow very impressive work. Do you think it is possible to create a launcher that does this on original Bnet Servers? I guess its not possible, but maybe you can think about this?

Edit:
Here is the post on the fastest league page: https://www.starcraftworld.net/index.php?topic=3004.msg30528#msg30528 Hope its fine that I shared it over there
¯\_(ツ)_/¯ - aka cReAtiVee
2Pacalypse-
Profile Joined October 2006
Croatia9561 Posts
10 minutes ago
#9
On October 09 2026 21:47 [sc1f]eonzerg wrote:
This is huge. Cuz this open to port to be able to play vs chinese players and koreans on a really good latency. Now you can do showmatches that is not breaking heads for everyone.

What do you mean by units teleporting tho ?

Sometimes in my games my hydra is running at a crazy speed all of sudden. Is it something similar ?

No, that's a different thing.

Here units might literally teleport from one place to another, but there's a lot of stuff that has to go wrong for this to happen, and even more stuff that has to go wrong for you to notice this:
- Connection has to be pretty bad
- You have to look at enemy's units
- The enemy has to move those units exactly when you were looking at them

And even in majority of those cases, the teleporting will only be a few pixels which you might not even notice. Also your own units will never teleport and they will respond immediately.

And if all of that isn't enough, we added an advanced setting which allows you to configure how much delay vs teleporting you prefer. It's better not to change this setting for now and just play and see how it feels for you. Most of the people that we had testing this said they didn't notice any issues and didn't have to change any settings.
Moderator"We're a community of geniuses because we've found how to extract 95% of the feeling of doing something amazing without actually doing anything." - Chill
[sc1f]eonzerg
Profile Blog Joined February 2010
Belgium7174 Posts
3 minutes ago
#10
Oh btw. I think stormgate tried to replicate this rollback system. But is very heavy for your processor. What are the minimum requirements now to get this working on shield battery ?
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