cant make hallways please tell me how!!! i am using 1.5

[blood2.0]

hi i have just started mapping but cant find how to make hallways or a cut in the wall. i am using 1.5 HELP ME

[TRaK]

You need to read some tutorials. Use CSG subtract to make a hole in your wall, then make some brushes.

http://tremmapping.pbwiki.com/Starting+Tremulous+Mapping

[Odin]

PLEASE do not use CSG subtract!

[TRaK]

Why not? For square holes in walls, it works fine.

[Plague Bringer]

Don't use it to hollow rooms.

[TRaK]

Obviously, but to make a hole for a door, I don't see the harm.

[Plague Bringer]

Neither do I.

[doomagent13]

Don't use it to hollow rooms.

Neither do I.

Just me?  Or a contradiction?

[Plague Bringer]

No, you don't.

I have no objection to using it to make a hole for a door or window, but I do object to using it to hollow out an entire room.

[Ingar]

- don't use hollow
- don't use substract
use the clipper and build all your holes manually. Build your rooms manually.

Every tutorial I ever read always starts with 'make a room' 'make a corridor'. While this is good starting point to explain brush-handling,
it is, in my opinion, not the best way to make your map. I always start with the inside (in detail brushes) and I put walls around it when it's is finished.

Think like this: a hole is not something you make by removing pieces of brushes; a hole is that what remains after you have build all your walls and insides.

Using substract to create holes, will cut your wall in weird ways. It won't be that bad for a cubical hole, but it certainly is for more complex shapes. The obvious example:

On the left side, I substracted a 6-sided brush from the wall, on the right side I constructed a clean hole by hand, with the inside in detail brushes. Note that it is very likely that the left example won't be grid-aligned!

Bottom line: if you can do it cleanly with substract, you're probably better of using the clipper. (Hint: enable the option clipper uses caulk in preferences)

Hollow is evil because it creates overlapping brushes. If you use it, make sure you fix the result properly. (Hint: the thickness of the brushes created from a hollow operation will match the grid size)

Edit:
The clean hole is much easier to edit:

[Lava Croft]

It cannot be stressed enough that you should try to do all your building work by hand. This way you keep full control over your work, and some 'smartly' coded tool cannot ruin it for you, only you can.