Blindness and Dark Vision- please help me clear it up

[Flyndaran]

Originally Posted by Bruno

Well, I'm pleased to hear this. My mutant with Sonar in Mlangsdorf's ATE game will be extra pleased.

Rules like that do mean bats would have to add loads of limitations to fit reality. As written, Sonar simply doesn't fit any real world animal despite the name and implied intent.

[Anthony]

Originally Posted by David Johnston2

No, it means the "range at which there is no modifier to the die roll".

It means the same within the game rules. Range for scanning senses is no-penalty range.

[evileeyore]

Originally Posted by Bruno

But if the idea is a character who can "see" the surfaces of things but has no real interaction with optical properties (can't see through glass, can't read computer screens), like I've seen some interpretations of D&D Dark Vision, that's not GURPS Dark Vision. I haven't found a satisfactory way to map that - the closest is a Scanning Sense but I don't like the game mechanical differences from Vision.

I think it's really a new kind of Bad Sight, probably in the -15 to -20 points range (and can't be corrected). Combine with Dark Vision et voilla.

I did it as I mentioned above.

Dark Vision (Based on Sense x, +0%), Colorblindness, and Sense X Sight* [0].

* It was "Sonar Sight", like the old school Daredevil from the early days of the comics.

I hand waved pretty much everything.

What the character could do:
"See" just as though he were completely colorblind.
"See" around corners and through thin walls and such with really good hearing rolls.
Was immune to flash based attacks and couldn't be blinded by lasers, etc.

What he couldn't do:
Read books, or billboards or see any colors at all.
Couldn't read computer monitors or watch tv.
Windows 'distorted' his "sight" since he had to hear the vinrations off of them, which was inaccurate (I just penalized his rolls).
Could be blinded by extremely loud noises, have his 'vision' distorted by soic attacks or white noise generators, etc.