Why does Ghosting occur on servers?

hc_wolf · #1 08-15-2012, 01:57 AM

When you fly up to the group the Poly's change or what ever and disappear.

Is this a Graphics coding thing for the Devs to fix with online code or is it something we can avoid by putting some code into our .cs Mission builds?

Oh and all you Star Trek Geeks out there. .. Please refrain from telling me it is something to dd with a Mirror Universe or the fact that the startship enterprise can only do 5.06 Warp speed cause some idiot vulcan removed the charger plug to iron his shirt.

Ze-Jamz · #2 08-15-2012, 07:21 AM

Not sure on the answer but its dam annoying and been there from the start, seems to of reared its ugly head quite a lot recently too...seeing more and more single or double ghost dots as well as the usual bomber size formations..

As for your star trek comment..red side, cloaking device..that's all I'm saying

adonys · #3 08-15-2012, 08:18 AM

because of mp virtual objects leftovers on the client (cached aircrafts, etc) due to desynchronization between the client and the server, which should have been collected by the garbage collector but weren't yet, or ever..

because of security and bandwidth problems, usually the client does not know all the objects (or their positions) which are present on the server. the server send the client a list with the objects going into his rendering/gameplay range, and updates this list all the time, while the client is using this list to render the objects and use them into gameplay code. if a desync appear between the server and the client, then the client has some objects into that list which are not actually in there on the server anymore and from here all the problems with the ghosting.

most probably, this is caused by the despawning of the AI flights code, which must be poorly done, or have some (logical) bugs in it.

as they enter in your visual range, the dots appear, and when you're close enough to have the objects actually rendered, the dots disappear, but of course, nothing is rendered instead, as there's nothing in there..

ATAG_Bliss · #4 08-15-2012, 09:06 AM

That makes sense except for the despawning part. For instance all our AI flights despawn on the ground - if they actually make it home. I think the problem lies in how they are spawned tbh. I tried script spawning, sub mission spawning, and delayed spawning through another submission and the problem has always remained. I think some dots are actually left over pieces of planes floating in the air. The dot, at distance, is the same size regardless if it's an entire plane or an elevator of a particular plane just floating in the air.

There's definitely some major problems regardless. We have AI ships that fly and static ships that float upside down or on their side. Would be nice if the MP world had any sort of tutorial or some sort of real dedicated server instead of the steam client crap we deal with now. Maybe one day

adonys · #5 08-15-2012, 01:43 PM

the leftovers from other aircrafts are only local decals, they can not be seen and should not be seen from far away.

the ghost dots we're seeing are the visual dots for aircrafts further away than the furthest LOD model distance.

Flanker35M · #6 08-15-2012, 01:56 PM

S!

Ghosting is annoying as heck. Once spotted supposedly a bomber formation and therefeore began to maneuver for best intercept course. Can imagine my frustration when I was almost over the formation it vanished! I NEVER encountered this in original IL-2.

Ze-Jamz · #7 08-15-2012, 05:32 PM

Quote:

Originally Posted by adonys

the leftovers from other aircrafts are only local decals, they can not be seen and should not be seen from far away.

the ghost dots we're seeing are the visual dots for aircrafts further away than the furthest LOD model distance.

So your saying if you were to stay on that course we would eventually see what they are ghosting?

Thats not the case in my situation as I tried out that theory and more than covered the longest airfield that they could lift from

hc_wolf · #8 08-15-2012, 09:20 PM

Thanks Adonys. Very good explanation. Thanks everyone.

Ze-Jamz · #9 08-16-2012, 07:10 AM

I gave up last night due to these dots..I've never had so many as I did last night..in he space of 20mins flying between 4-6k I came across single, doubkes, formations and formations and even a single above it mimicking a fighter escort..

I gave up counting after 96 ghost dots... and not much fun

5./JG27.Farber · #10 08-16-2012, 02:29 PM

Yea it gets damn annoying when you about face 3 or 4 times to find nothing...