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I run my own TF2 server for my friends and we occasionally balance the teams with bots. Unfortunately, the process of generating nav paths for the bots (rcon nav_generate) is a sad experience for any connected players.

I'm wondering: If I go through each map manually and run the nav_generate command, will the server remember the paths between reboots?

If not, are there any other ways to supply automatically generated nav paths to the game?

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    Can't you save NAV files?
    – Quaxton Hale
    Commented Jan 4, 2014 at 18:31

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Once you run nav_generate for a map that is not bot-supported, TF2 will save a .nav file in your C:/Program Files(x86)/Steam/SteamApps/common/Team Fortress 2/tf/maps folder, and any time you run the map with bots subsequently (as long as you still have the .nav file), you will not have to run the command again.

Also, it seems that only the computer running the server is required to have a .nav file for the map, since when I played on a unsupported map using bots, I did not find a new .nav file in the folder listed above. So, as long as you have the .nav file for the map, you should not have to regenerate each time you load an unsupported bot map.

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  • This is an old answer, but you can also generate nav files on a TF2 client and upload them to a server. Just bear in mind that you must set sv_cheats 1 before you run nav_generate.
    – Powerlord
    Commented Oct 4, 2017 at 18:33

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