SOLID_BBOX is a macro that just gets replaced with the number 2. In your level editor, assign one of the numbers below to solid.

From defs.qc:
float SOLID_NOT = 0; //nonsolid
float SOLID_TRIGGER = 1; //trigger
float SOLID_BBOX = 2; //brush entities
float SOLID_SLIDEBOX = 3; //monsters
float SOLID_BSP = 4; // the world

All of the ALLCAPS variables get replaced by the number or string they represent.

Mins and maxs I believe are automatically generated from the model size and shouldn't be necessary. 

I've toyed with the idea for using it for ice or even as a type of player freeze brush since it prevents jumping. In my Keep mod I have a func_slidebox that can let you do that. 

Although what QMaster posted will work, you can make it a bit more user-friendly using spawnflags. This will make it so that mappers can switch between solid and not using a tickbox. The code you want is something like:

if(self.spawnflags & 1)
self.solid = SOLID_BBOX;
else
self.solid = SOLID_NOT;

The part in the bracket checks if the first spawnflag is ticked, and the second line only happens if that is true. The fourth line only happens if the box is not ticked, because of the else keyword.

If you want to use a different spawnflag (maybe for another feature), it's worth knowing that the boxes are numbered in a surprising way:
1
2
4
8
16
32
...
and so on, doubling each time. So if you want the feature to be controlled by the fifth spawnflag, you would change the condition to

if(self.spawnflags & 16)
 

So is there a tutorial/.map file I can shamelessly copy paste from to get the horizontal opening doors from e1m1? The base style ones. Seems like very complicated brushwork. :[ 

You can get the original map sources here:

https://www.quaddicted.com/files/maps/sources/quake_map_source.zip 

just started making quake maps using J.A.C.K. a couple days ago and for the most part I've been able to figure out stuff on my own, but I'm having trouble with func_trains. I'm trying to trigger an event where a platform with a monster on it rises up from the floor but using func_train isn't working the way I want it to. I created a trigger to move my platform) from corner 1 to corner 2 but whenever it reaches corner 2, instead of stopping, the platform just disappears and gives me an error with a bunch of information abut the train.

I'm wondering if there's another method for this kind of thing or if I'm just doing it wrong? 

Have corner 2 target corner 1 but use "wait" "-1" to stop it permanently. 

awesome, thanks 

You really should learn by doing it. It's really not that hard and you'll learn a lot about whatever editor you are working with. Hint: use the clip tool.

Copy and pasting brushwork is weak (unless it's for a Speed Map and you've done the same creation before, which I think is fair.)

Challenge yourself, when you succeed you'll be a better person. 

...using Trenchbroom.

https://youtu.be/5xL_vmMfHFU 

I missed a brush (see if you can find what I did wrong) but hopefully you'll figure it out on your own. 

Sorry for all the posts - this is a revised video.

https://youtu.be/96-oRhYiF-o

I need some coffee. 

Just started mapping a few days ago, and have become hopelessly addicted. Oops. I can't figure out how to make a fullbright texture. is there a way to do so?

Thanks in advance. 

why do items placed in the editor sometimes not show up in-game? like I'll try to place two ammo boxes next to each other but when I boot up the game one of them isn't there. 

Theyre too close together. Move them apart and theyll both load. 

You don't make textures in TB actually. You can create textures in Wall or TexMex and most likely QuARK.

General info here:

http://www.celephais.net/stuff/texturefaq.htm 

It's also possible to make any texture technically fullbright by turning the brush it's applied to into a func_wall and using the necessary (and usually compiler-dependent) entity fields to make the func_wall still cast a shadow and be lit properly on the other faces, but have the one face you want ignore lighting and display at a constant brightness.

Granted, this is only really a solution for smaller details (computer screens, gauges, eldritch runes, etc) as turning giant parts of an actual wall into func_walls so you have holes going everywhere is generally not a great idea for vis time and framerates. 

I made func_breakable to the my AD map, then connected trigger to it. Breakable object has breaks by trigger, but also player can make breaks it by his weapons.

How to make a ban for the break object by the player's weapons? I can make greater health value (eg 65000), but is there any other way? 

Set the spawnflag to 2 (= nodamage) so player can't damage it. 

Thanks. 

After some though, I realized that making the texture fullbright isn't the solution to my problem. I need to make the brush (some lava) give off light.

Is there a way that this can be done? 

Haven't tried this functionality myself yet, but ericw's compilers seem to support this kind of surface lighting : https://ericwa.github.io/ericw-tools/ (check bottom of the page.)
Not sure if it'll work right with a large surface. 

Thanks mate.