Ideas of questionable quality

[Sov]

Idea - One-way mirror/window?

The sprite would remain the same, but vision would be blocked from one side. Because of how windows work now it would be immediately obvious that something funky is going on, but might be useful. This idea came about as I was trying to think of places that a secret lab could be made.

Im imagining this working by applying silver to an existing window sprite. If someone was standing to the right of the window, then that is the side that becomes opaque.

If we wanted to go really crazy we could have it be based on light levels. If the light levels on the tile next to the opaque area is low, perhaps some visibility through could work.

Or it might just not work well in a game like SS13.

on the same note of probably difficult to implement window variants

frosted glass windows

• you can only see a set distance through them, being closer increases how far you can see through them
  
• light passes through without issues