Not a bug
BYOND Version:514
Operating System:Windows 10 Pro 64-bit
Web Browser:Firefox 96.0
Applies to:Dream Seeker
Status: Not a bug

This is not a bug. It may be an incorrect use of syntax or a limitation in the software. For further discussion on the matter, please consult the BYOND forums.
Descriptive Problem Summary:
If a mobs sight is set to SEE_PIXELS that mob sees all objects, mobs, and turfs regardless of darkness or occlusion.

Numbered Steps to Reproduce Problem:
1. mob.sight = SEE_PIXELS
2. Approach an opaque object or dark area.
3. Notice that you can see everything on the other side of the opaque object/in the dark area.

Code Snippet (if applicable) to Reproduce Problem:
set name = "See Pixels"
usr.sight = SEE_PIXELS

Expected Results:
The mob would be able to see parts of large objects on occluded turfs that poke out into visible turfs. The mob would not be able to see things entirely on occluded turfs.

Actual Results:
The mob sees everything, including everything on turfs that should be occluded by opacity/darkness.

Does the problem occur:
Every time.

When does the problem NOT occur?

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? (Visit to download old versions for testing.)
TODO: Check this. The last mention of SEE_PIXELS


I need a test case for this. Keep in mind however that any objects on a plane higher than 0 will appear above the black tiles.
Yeah, it looks like the plane master system we have going managed to punt everything above the darkness plane. My bad. Feel free to resolve this.
Lummox JR resolved issue (Not a bug)