Ok, so I figured out how to make walls that block light, do these walls also block movement? I ask because while testing my test character goes right through them, and I don't know if that's because I'm the DM or if I didn't hit the right switch. I've looked around but there doesn't seem to be any videos that tell me how to fix this, and the only thing I can find that asks the same question gets an answer that doesn't really work for me... and it's six years old.
