problems in darkened room

[el_rolas]

I'm doing a map for quake 3 and i dont why I have this problem

it is supposed to be a darkroom but there is a light filtering of the other room



does anybody know how can i fix it?

[metlslime]

thicker walls?

[mh]

Make them overlap where they meet. It's probably a hairline crack letting light filter through (which may be caused by a combination of your walls not being grid-aligned and floating point precision falloff).

[Chip]

I have the same problem with walls being perfectly aligned to grid.

It's either floating point precision, or try to overlap your brushes.

[goldenboy]

obvious hint; don't let rooms share walls unless necessary.

[Chip]

[goldenboy]

It's not really incorrect, since there usually is no right or wrong here.

I've found it more practical to build two separate boxes, so to speak, in cases like this. It might be smart to leave a good bit of void between them, too.

1. It makes it a bit harder for light to travel through hairline cracks

2. Each room now has its own walls, and changes you make to the wall (such as using the clipper to create details or use multiple textures "per wall") only affect one room instead of both

3. Enough void between rooms helps to restrict ambient sounds to one room or the other

4. Easier to box select one area but not the other

5. Each room can be changed / extended without affecting others (this is another reason why you want some void between them, you might need the space in the future)

There are probably more advantages than listed.

I started e1m2rq, for example, when I was still pretty new to mapping (2007 or early 2008). I often didn't follow this rule because I falsely thought it was somehow more efficient to have the rooms share walls. What can I say, this came back to bite me in the ass later when I was splitting the walls to accomodate more textures, and again when I later wanted to change these rooms.

It's no iron law, just common sense I think.

[Spiney]

You can make the walls and floor meet at a 45° angle on every axis. Might take a few more brushes, but it don't leak light that way.
Also, if the floor is a single brush, it might be because of low lightmap resolution + bilinear filtering.