In this tutorial you’ll learn how to setup J.A.C.K. to export a map that is compatible with bots. You’ll also learn the basics of setting up proper bot routing.

There's no actual reason given, but I have a feeling there might be a legal matter since they sell this level editor on Steam, but BSPC is a separate third party tool made by someone else for free. So including BSPC would mean they're technically profiting off someone else's work, so explains the omission. But in any case, hey, at least it gave me an excuse to make this guide.
For a variety of reasons, mainly these two:

1. You’re not gonna be able to easily play your map with several people every time you want to test it or just play it for fun.
   
2. By having bots, you’ll be able to test balance. Is the BFG10k too easy to get? Is this map too small for more than 4 players? You’ll never know unless you put bots on the map.

I intend to make an effective part two of this guide which will highlight some additional bot routing techniques.
Please specify the issue in the comments, I want to improve this guide where it might be weak. Help me help you.
I realized that I accidentally omitted some crucial pieces in the level compile process. Gimme a bit to resolve this. For now, you can just run a regular compile, then run a bot route compile in the meantime.
No

Quake 3 additional definitions:
http://likoclave.com/files/quake3addons.fgd

BSPC (tool):
http://likoclave.com/files/bspc.zip

1. For the definition file, you could effectively put it anywhere, but for convenience sake, put it in your J.A.C.K. directory in Steam (if installed on C:\ it would be C:\program files\Steam\steamapps\common\JACK\quake3).
2. Open J.A.C.K., Tools > Options > Game Profiles.
3. Click add then navigate to where you put the FGD file and select it.
4. Apply and click OK. info_camp and item_botroam should now appear under your entities menu.

Open the zip and drag the exe inside of the maps folder inside of baseq3 (If you have the steam version of Quake 3 on your C:\ drive, it will be C:\Program Files\Steam\steamapps\common\Quake 3 Arena\baseq3\maps). Do not run BSPC.exe on its own, it is a command line application that must be ran through either command line or a batch file. How it works is that it extracts 3D volume data, omits all entities, textures, etc. (except for those relevant to bot navigation) and turns it into a bot navigation file. Or in the case of this tutorial, through J.A.C.K. itself.


Now we need to integrate BSPC as part of the compilation process. This will put it at the end of the compiling order once the map itself is done being compiled. The bot navigation file is a seperate file ending with the .aas extension.

Traditionally BSPC is ran through command prompt. This process does get monotonous when you're making minor adjustments to bot routing and have to constantly recompile the map then run BSPC. By integrating it into "Run Map" you don't even have to think about it too much; just run it, then wait for Quake 3 to launch. Just remember to only compile for bots once it's ready for bots. Using the dialog for reference, follow these steps for setup:

1. Open the Run map dialog
   
2. Change to Expert Mode
   
3. Select "Edit" from the Game configuration dropdown
   
4. Select "Default"
   
5. Copy that configuration and rename it to something so it's obvious what it is (such as "Default + bots") it's the same thing but now with bot routing
   
6. Create a new step on the end with "$bspdir/bspc.exe" as the command, "-bsp2aas "$bspdir/$file.bsp"" for the parameters, check off both "Wait for termination" and "Use Process Window"
   
7. Bump this step up above "Change Directory" (this new step should be the third to last step now; after doing this it should autosave so you can use this configuration here on out.)
   
8. Clicking OK will now run the process.

*Sidenote: I don't know why but appending the BSPC step to any of the Quake III configurations didn't work, but appending it to the Default one does. It's dumb, but it works, so it's not dumb.

The new FSD file you downloaded is a file that I authored, based off of entities from the original GTK Radiant definitions file that were missing from J.A.C.K.’s definitions file. Two of these (info_camp and item_botroam) are tantamount for setting up your bot pathing file (AAS).
This tells the bot that this is a good place to stand in place and shoot at players, without them, bots will continually run around the map until they encounter someone. It effectively tells them to stop for a moment and look for a target and shoot from that spot. You can designate a weight; the higher the number, the more likely they’ll gravitate towards it. As well as range; which designates a set radius of in-game units that would qualify as the camping area.
This acts like an invisible item or cookie (hence being given an item_ designation) for bots to “collect.” This should connect between key items (such as weapons and armor) to tell bots where they should go. You can designate weight which will be factored in when a bot is trying to figure out which path to follow. Allegedly you can make a map without botroams and bots will just bounce between items, but in all cases, I’ve just seen bots stand around if I don’t use botroams.
This was omitted for an unknown reason. So I readded it to the definitions file. This could potentially be used for a number of events that could add dynamicism to a map.

Awesome, now that you have everything installed and setup, you're ready to build your map for bots.

As previously mentioned, botroams will tell bots where to go. They will show up as 16x16x16 orange nodes. Their weight will range between 0 and 400. The definitions file has them defaulted to 200 as I figure that would be a good middle ground. Set the number lower (to say 100) if you're going to pack them tighter. Raise the number if a bot is not cooperating and not going to an area where you want them to go. Generally when you place botroams, you'll want to continually recompile your map and rebuild the AAS file (anytime you make changes to the botroams), spectate a bot as they navigate your map to debug. You'll likely need to adjust weights and distances of your botroams. I can't say there's really a good rule of thumb regarding placement of botroams since it really varies map by map.

This entity is a 16x16x16 dark green node. You'll want to place these in locations where a player would likely stop and snipe other players, typically an overlook or ambush location. Changing the weight will greatly influence the bot's choice to camp; the higher the number, the more likely they'll camp. Also make sure to adjust the range to be about the size of the area the camp is in. So in the example shown, the ledge is just under 500 units wide, so I set the range/radius of the info_camp to 256. Again, you'll want to experiment with these numbers until you get a satisfactory result.

Bot clip is a very specific use texture. It's completely invisible and is used to cover up elaborate geometry to allow BSPC to skip over it. Also use it in areas where bots get stuck, or travel in such ways that aren't satisfactory. The most frequent usecase for it I've found is for areas that are out of reach that realistically a player could want to get to, but a bot won't go to (for example rocket jumping to a higher wall).

This section is reserved for anything that is brought up in the comments:

If for any reason following this process doesn't quite work, you can still run a compilation using BSPC independently. In order to do so, navigate to the folder that has BSPC.exe, run command line from this folder, then run the following command assuming your map name is testmap.bsp and Quake 3 is installed in "C:\Program Files\Steam\steamapps\common\Quake 3 Arena\baseq3\maps", you would run the following command after compiling your BSP:

If you correctly implement these entities and compile your AAS file, you'll have a bot ready map. Since this is my first guide, feel free to hit up the comments section with questions or errors you ran into and I'll try to address them in the FAQ or any future revisions.