Waargrin said: Rabulias, that link goes to a discussion about 1-sided Dynamic lighting, not what I am asking for. I want a way to prevent PCs from moving through a barrier, but still allow them to see through it. I don't think those are the same. The title is a bit misleading, but that thread has become a place for many related dynamic lighting (DL) suggestions, including DL lines that block movement but do not block vision. If you read through the thread you will see it brought up a number of times, and is probably the best place to vote for and talk about it.