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> How to beat a levitating invisible dead horse, Invisible vehicles.
Lagomorph
post Oct 10 2006, 04:03 PM
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QUOTE (Bodak)
Imp Invis is more like the Somebody Else's Problem field than transparency: it's just a means to trick observers into not noticing anything unusual is there. And that, as Slartibartfast would tell you, is a great deal easier than making something actually transparent.

I like that description of invisibility alot, thanks
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KarmaInferno
post Oct 11 2006, 11:08 PM
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I've always viewed the Invisibility spells like this:

Let's say you cast Imp Invis on a security guard to make him believe the wall he's guarding is transparent.

Okay, he believes the illusion, which means he sees whatever he remembers being on the other side. Or whatever he believes should be on the other side. If he doesn't know, his mind will make something up to maintain the belief.

What he will NOT see, however, is the runner sneaking by on the other side of the wall, unless he somehow has some means of knowing the runner is there.

It's an mental illusion, not a transparent wall.


-karma
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Kagetenshi
post Oct 11 2006, 11:18 PM
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Just a terminology nitpick: it doesn't matter what the guard believes. If he's affected by the spell he may believe the wall has vanished, or he may believe that the wall has been affected by illusion magic, but he still won't see the wall. Likewise, if the spell didn't affect him (but was successfully cast), even if for some reason he was expecting to see the wall vanish, he sees… an ordinary wall.

~J
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Herald of Verjig...
post Oct 11 2006, 11:19 PM
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QUOTE (KarmaInferno)
It's an mental illusion, not a transparent wall.

Except for improved invisibility which is a physical illusion.
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Kagetenshi
post Oct 11 2006, 11:21 PM
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But still not a transparent wall.

Now if you'll excuse me, I have an illusionary door to walk through…

~J
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hyzmarca
post Oct 11 2006, 11:27 PM
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Physical Illusions, in SR3, are the same as mental illusions except that they operate on senseor input interpertation devices (including the eyes and brain) physically, rather thn just the "mind", which allows them to also fool cameras and technological sensors.
However, belief doesnt matter because a camera will show the exact same thing that the guard sees. Rather, the spell does make the subject apparently transparent (not actually transparent since it can be resisted) but the difference between apparently and actually transparent is pretty much nill. Except for the ability to resist one may as well be the other.

However, I must disagree with the FAQ interpertation on LOS, as this leads to American magicians making the Earth invisible to manabolt a guy in China and vica versa.

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Kagetenshi
post Oct 11 2006, 11:31 PM
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So to be clear, what does the camera see? What does the guard see?

And let me open a new can of worms I've been forgetting to post since late May:

Phil, cyberphotographer extraordinaire, is taking a picture of his four good mage friends (Alice, Bob, Chuck, and Desiree) with his internal eyecam. They're all tricksters, though, and have cast Invisibility on themselves. Alice has Invisibility cast with five successes, Bob has it with two, Chuck has Improved Invisibility cast with five successes, and Desiree has it cast with two. On every test, Phil rolls three successes. They line up, he takes the picture and prints it out to see…

Who?

~J
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hyzmarca
post Oct 11 2006, 11:39 PM
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This depends on how they are lined up.

However, it is quite easy to say that he will see only Bob and Desiree while the picture will include Alice and Bob certainly and possible Chuck and Desiree depending on what force the spell was cast at and only depending on the force. Since Successes are usually capped by force Chuck is casting at force 5 in the least so he will be invisible to the camera with Desiree may or may not be.
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will_rj
post Oct 11 2006, 11:41 PM
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** my head hurts ** :spin:
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Deamon_Knight
post Oct 12 2006, 01:16 AM
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You are EVIL Kage.
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Kagetenshi
post Oct 12 2006, 01:24 AM
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QUOTE (hyzmarca)
However, it is quite easy to say that he will see only Bob and Desiree while the picture will include Alice and Bob certainly

So what if Phil routes the picture into his imagelink? Does he get shown a picture of Bob? What if he does this sixty times per second?

~J
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hyzmarca
post Oct 12 2006, 02:01 AM
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QUOTE (Kagetenshi)
QUOTE (hyzmarca @ Oct 11 2006, 06:39 PM)
However, it is quite easy to say that he will see only Bob and Desiree while the picture will include Alice and Bob certainly

So what if Phil routes the picture into his imagelink? Does he get shown a picture of Bob? What if he does this sixty times per second?

~J

Yep, but he can't target spells through it nor would I allow smartlink bonuses through such a setup. Also, since the camera does not get to resist Improved Invisibility he would not get to resist it. In other words, he could not possible see any person with Force 4 invisibility and 1 success using this setup.
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Kagetenshi
post Oct 12 2006, 02:28 AM
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Why wouldn't you allow smartlink bonuses?

Also, what if he uses a semitransparent overlay instead of totally replacing his natural vision?

Perhaps more importantly, why does this differ from a cybereye?

~J
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Lost Demiurge
post Oct 12 2006, 03:12 AM
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Y'know, it never ceases to amaze me...

Why the hell do people cast invisibility on vehicles? Moving vehicles that they're IN?

Seriously, do you know what happens if you try that on the highway? You BETTER have a rigger driving, or Mister Mack Truck is going to fuckin' run you over. Mr. Wageslave is gonna rear end you, the go-gang is gonna try to drive through you...

On deserted streets or barrens, sure. Invis away. On the highways, or busy streets? Dumbass, you just crashed. G'bye...
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hyzmarca
post Oct 12 2006, 03:18 AM
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Data processing. The cybereye does not process any data, it simply sends signals directly to the brain in response to light just as a normal eye does. On the other hand, a cybereye camera transforms those signals into a digital image and the imagelink transforms them back.

As for no smartlink bonuses, mostly due to the fact that the imagelink is in use by the camera and the smartlink must use the imagelink to display the reticle.
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Kagetenshi
post Oct 12 2006, 03:38 AM
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QUOTE (Lost Demiurge)
Why the hell do people cast invisibility on vehicles?  Moving vehicles that they're IN?

Seriously, do you know what happens if you try that on the highway?

In my experience, people generally cast it because they aren't on the highway.

QUOTE
You BETTER have a rigger driving, or Mister Mack Truck is going to fuckin' run you over.

In my experience, people also frequently have a rigger driving.

Hyzmarca: it needs to process light into ion movement, at minimum. There's no getting around the fact that at some stage in the process it needs a dump of the sensors, whether that dump is sampled on-demand or at a specified refresh rate. As for the imagelink issue, nothing says the imagelink can only accept date from one source, but even if we assume it can't take a second source there's always the limited imagelink that a Smartlink normally comes with (you don't need to use the already-installed full imagelink).

~J
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Deamon_Knight
post Oct 12 2006, 04:09 AM
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hyzmarca, so what? I'd fall back to the 'paid for with essence=natural' excuse. If mr cybereye has enough successes to pierce improved invisibility's illusion but not regular illusion, the eyecam pic relayed through an imagelink won't overcome it either, mr cybereye is still under the effect of the invis spell and rerouting the image to the opticam/imagelink and back to the optic nerve are for all intents and purposes exactly the same as natural functions.

It gets REALLY wonky if Mr Cybereye is attached to a radio or telephone and pipes the captured image to someone else outside the range of the mages effect. Roleplay THAT misdirection to your players sometime.
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hyzmarca
post Oct 12 2006, 04:54 AM
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QUOTE (Kagetenshi)
Hyzmarca: it needs to process light into ion movement, at minimum.

True, but it does not need to do anything more than what the human eye naturally does. Light hits a photoreceptor and is transformed into ions and transmitted to the brain. The eye is not acting on the data in any way and the data is not directly computer readable. It is really little different from having a natrual or bioware eye. With an imagelink, like electronic magnification, the eye converts the data into a machine readable format first, edits it, and then converts it into a brain readable format. Because of this, the character is not looking at the person but is looking at an image of the person captured by the eye camera.
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will_rj
post Oct 12 2006, 05:28 AM
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QUOTE (Lost Demiurge)
Y'know, it never ceases to amaze me...

Why the hell do people cast invisibility on vehicles? Moving vehicles that they're IN?

Seriously, do you know what happens if you try that on the highway? You BETTER have a rigger driving, or Mister Mack Truck is going to fuckin' run you over. Mr. Wageslave is gonna rear end you, the go-gang is gonna try to drive through you...

On deserted streets or barrens, sure. Invis away. On the highways, or busy streets? Dumbass, you just crashed. G'bye...

The setup:

Chicago, August 22, 2055. late at night.

The whole group is sitting tight in the rigger´s van, going north in the Chicago Skwy. To add some chaos to the scene, i´ve decided to add blockades all along the 94, leading to a massive gridlock in the lower city and a completely deserted highway. They decided to ram some of the blockades and try their luck in the highway. The sky, on the other hand, is patrolled with some drones and helicopters from the national guard, who just arrived from a nearby headquarters. (Oh, and some bugs too, but who cares ? )

So, in an effort to avoid detection while speeding thru the empty highway, they used a combo of chaotic world and Imp Invisibility, and here we are.


And no, they haven´t managed to escape. Even though it´s easier to do it before the wall goes up, they would have to break a blood oath they did to Don O´Toole himself.
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Ryu
post Oct 12 2006, 09:15 AM
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Improved Invisibility is a physical spell and therefore of no use on the astral plane. Not enough to break out of the Chicago containment zone...

Basic invisibility has some logical fallacies due to only your brain being fooled. The cybereye-issue is only an apparent one. What about infrared goggles that overlay their input on your shades? I´d count both at technical device (albeit one being paid for with essence), making basic invisibility rather useless on the material plane.
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Bodak
post Oct 12 2006, 10:58 AM
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QUOTE (Deamon_Knight)
I'd fall back to the 'paid for with essence=natural' excuse.
I understand why they wrote that, but I have never liked it. I reckon cybereyes 'should' not get to roll resistance tests, like other technological sensors, whereas bioeyes and those eyes 'my mother gave me' should.

QUOTE (hyzmarca)
Light hits a photoreceptor and is transformed into ions and transmitted to the brain. The eye is not acting on the data in any way
For the deepest layer of cells, the photoreceptors furthest from the pupil, that is correct, no processing - but those are not the cells that communicate with the brain. All the interneurons and ganglion cells in the retina that lie in about 12 strata ontop of those photoreceptors do a vast amount of integration and comparison and other calculation before sending parallel heavily processed data down the optic tract.

For example this page says:
QUOTE
One group of ganglion cells, for example, only sends signals when it detects a moving edge. Another group fires only after a stimulus stops. Another sees large uniform areas, yet another only the area surrounding a figure.

Without interaction between layers, though, the signal emerging from the tangle would not be much different from the original 12-channel output of the bipolar cells. The critical element is another type of cell, the amacrine cells, which send processes to the various layers of dendrites and allow the layers to talk with one another. This cross-talk is what allows the layers to process the visual data and extract the sparse information that the ganglion cells send up to the brain.

This page has diagrams and a simple step-by-step guide to the way different cells in the eye respond when light falls on part of the retina. Suffice to say it's not a simple case of sending two unadulterated snapshots of the outside world to the visual cortex and getting the brain to do all the processing from there.
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will_rj
post Oct 12 2006, 01:40 PM
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QUOTE (Ryu)
Improved Invisibility is a physical spell and therefore of no use on the astral plane. Not enough to break out of the Chicago containment zone...

As i said, they were trying this in August 22. Formally speaking, there´s no CZ yet.
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eidolon
post Oct 12 2006, 02:06 PM
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nezumi
post Oct 12 2006, 02:51 PM
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QUOTE (Lost Demiurge)
Seriously, do you know what happens if you try that on the highway? You BETTER have a rigger driving, or Mister Mack Truck is going to fuckin' run you over. Mr. Wageslave is gonna rear end you, the go-gang is gonna try to drive through you...

Actually, no. Absolutely nothing interesting well happen except maybe for some very low tech mo-peds running into you.

Reread the manual. Rating 0 sensors include rangefinders, as well as ultrasound and laser proximity detectors (none of which are affected by invis). Rating 1 sensors include all the above plus basic radar (which is not affected by invis).

(This is on page 135, if you're looking for it.)

As for the invisibility question... Maybe SR3R should just drop improved invisibility and be done with this mess.
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Fire Hawk
post Oct 12 2006, 02:55 PM
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So don't cast Invisibility. Get an SEP-field generator. :twirl:

That should solve everything.
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