Light Seeping Through?

[v4zcent]

I'm pretty newb at the UnrealEd, but this problem is probably especially newby even for me. I was wondering what would cause a room to have light at the floor around the edges for seemingly no reason. I set up the room in the pic as an example. Yes, there is a sunlight actor outside of the room, but I'm sure that the floors are connected with the ceiling in this pic. Actually, the room is simply subtracted out of a larger, added box.Is that what causes the floor's edges to be lit? Or is it something else? If someone could explain to me why the floor looks that way that would be great.

 

[chewmyheadoff]

It's an infestation of mould, must be caused by damp seeping through.

You could try zoning this room off, but I don't know if that will help.

http://wiki.beyondunreal.com/Legacy:Zoning

 

[JustFilth]

I beleive this is caused by a light in a joining room having to big of a radius, find the offending light and try lowering the radius settings and check again.

Cheers

JustFilth.

 

[Alex_KF]

Can be caused by a few things.

I've found it happens when walls are quite thin and there's a light source right behind them, it can often penetrate the wall...

Also, it may depend on how you've constructed your BSP. If are using all subtractions, you probably wont get this.
If on the other hand you are subtracting within an additive brush, or you've built your room with only additive brushes (walls, floors, ceiling) you will stand more chance of having light bleed through.Those are just my observations really, so dont take them as 100% fact.

I think it's safe to say that unreal engine 2.5s lighting system is just ancient and quirky

 

[chewmyheadoff]

I have the same problem actually. My theory is that shadows never end at definate edges, there is a slight distance where the darkness gradually becomes light again, or light becomes dark. This distance seems to have travlled through and under your room. So I suggest making a thicker wall, to hide the edges of shadow.

 

[Xendance]

Yea, either make the walls thicker or make the lightmap resolution of the floor higher (which means lower number in the surface properties).

 

[v4zcent]

Alright thanks I'll look into it, I was worried I was the only one with that problem >_<.

 

[arramus]

Do you have any overlapping brushes? That can also cause this issue.

 

[=GG= Mr Moe]

Yea, either make the walls thicker or make the lightmap resolution of the floor higher (which means lower number in the surface properties).

Yes, I say use a lower lightmap number for those surfaces...

 

[shadowwill]

Yeah its the lightmap, ive seen this in many places on different games. In case you arnt sure why the lightmap is affecting it, its because Lightmaps are created on a grid, you may notice angled shadows look grid like (like a set of stairs). If you lower the lightmap size, The grid gets smaller, so the shadows are more fine, and spread less.


So lets say you have a 8 unit thick wall with a base under it, and the lightmap on the base or floor is say 32. If the 8 unit thick wall is in the middle or overlapping that 32 unit lightmap grid space, you will see light on both sides of the wall if there is only a light on one side of the wall. Lower the lightmap size or try move the brush/object to remove counter this effect.