#FACTORIO DOWNLOAD MAP SPEED CODE#

On my machine and the code got kind of forgotten.Ībout three weeks ago we decided to revisit the map transfers and I've spent two it worked! Let's ship it!Ī few releases, a few fixes, and a few desperate kludges later it worked very reliably So I read an article or two, coded it up and. So Wikipedia came to the rescue and told me that a prety decent algorithm to determine Packets there should be at one time and that value is called cWnd'. 'we're sending some packets and waiting for confirmations, somehow we know how many unconfirmed When we started implementing the file transfer all I had was a rough idea of The data, instead of sending data and waiting for acknowledgements.Īlso we don't really care about ordering of the data blocks as long as all of them The file transfers work by requesting individual blocks from peers and waiting for To make downloading from several other players possible in peer to peer mode, So we decided to have file transfers done over UDP, even though it means reimplementing Possibility of using NAT punching now or later with MP matching server and it wouldĬause problems with downloading from multiple players at the same time. TCP ports as well as UDP ports in firewalls and NAT servers, it would remove the Using TCP would have three important consequences: It would force players to open Unfortunately in Factorio nothing is ever easy :-). Just pop the whole thing into the stream and let the elfs do their magic.ĭifferences between Factorio map transfers and UDP Which sounds suspiciously similar to moving files over the network, right? Instead of transferring unreliable packets, it provides a stream of bytesĪnd the machinery inside wraps pieces of the stream to packets and makes sure that To keep people sane and networks fast, someone came up with a way to hide all theseĬomplications (because that's what programmers do) and invented the TCP protocol. The network that these packets travel is a dangerous place, packet can get lost,ĭelayed, or even duplicated along the way. These are nothing special, just some bytes wrapped in an envelope made out of other bytes. (or frames or segments or datagrams, depending on where exactly you look).

#FACTORIO DOWNLOAD MAP SPEED HOW TO#

Now that we know that we really must copy all the data, the question is how to doĪs you probably already knew, the Internet works by passing small chunks of data This has been discussed in slightly more detail in To have complete information about the whole map. You might ask why do we even need to upload the whole map when the player mightĮnd up seeing just a tiny part of the world anyway.ĪAAAnd the answer is: That's just how it works :-).Įssentially it's because Factorio runs a lockstep simulation and every player needs So while we were getting a steady stream of bug reports about this problem, we

#FACTORIO DOWNLOAD MAP SPEED FULL#

Albert is back home for a week so the full speed GFX work will happen from next week on.įactorio has long had problems with map upload speed.Īs usual the hard problems they always appear 'out there' and never when you're looking for them,

While Kovarex has spent most time on the 0.12 bugfixing.

#FACTORIO DOWNLOAD MAP SPEED MOD#

Robert is working on Combinators, Posila and Vaclav on Fire and Flamethrower Turret, Martin is immersed in Factorio mod portal and its integration and Tomas and Ondra have been tweaking some Multiplayer Matching server stuff. The week has been spent mostly on pushing forward in multiple of ongoing areas in the development for 0.13. This post will be more technical than usual, so let us know if you found it interesting. This week's instance of FFF is brought to you by cube, your friendly neighbor clueless network programmer.

Factorio download map speed