Why is it that after I press P, almost half the walls, and the floor and stuff are invisible?
Check the normals of the objects, some may be facing the wrong way. In edit mode press Ctrl+Shift+N and click Set normals outside or whatever it says. See if that works.
Edit: Looking at the picture you posted below the normals are backwards. Alternatively to my previous suggestion, you could select all verts in edit mode and press W then click Flip Normals.
normals?
Select your mesh, go to edit mode, select all faces, and press ctrl-n. Say yes to recalculate normals outside.
Is your problem fixed?
I know what he’s talking about, the long distances don’t show up until you get there. I hate that, it especially happens with a floating camera.
Recalculating the normals only worked for about half of the entire thing
