Alright, I'm at a part in my map where I'm starting to get into the polishing, texture tools use and lighting, etc. about 60-75% of the map is indoors, but there is an area that has an outdoors environment. My question is, what is the best way to block view of the ceilings and outside structure of the indoor environement if you have rocket jumped and can see essentially the top view of the map. I provided two screen shots to better visualize what I am trying to get at. The first image here shows what the outdoor environment looks like. This is exactly right outside the entrance to indoors. This second image shows the view that a player might have if they rocketjumped/sticky jumped, or just got blown to oblivion by an enemy. I don't want the user/player to view that concrete ceiling texture and view the architecture of the map that is indoors. Basically, I'd like them to see the yellow and gray brick walls and nothing else but sky. I don't know if this is possible. I've looked at some of the texture tools, and have briefly toyed with occluder brushes. An occluder would be perfect for this, but as far as I know, occluders only work on blocking the rendering of models, not brushes. Is my only option to make the walls higher and restrict the ceiling height with player clip or is there a way to not render brushes that are within line of sight?? I know raising the walls and adding more architecture is an option and I'm very close to doing it, but my main worry with that is that when using player clip, stickies don't bounce off of it. I don't like the idea of seeing stickies floating on the invisible ceiling.