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Need Help tracking a weird "insta-death" Bug


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Monostripezebra
Posted (edited)

After some "maybe"s I have yesterday found a definate "insta-death" bug, during the fan-flyout of YT-guy "Magz" and would like to collect more data on it.

 

 

What happened?

 

I bombed an aifield with 2 players on it, a 109 and Stuka... but simultaniously elsewhere, far away on the map, another 109 and another Stuka exploded without ever having been near the bomb (like 50km away). All 4 kills were then in the chat atributed to me.

 

At first we all where confused, but since the remote-exploded 109 was my friend Asgar, we were able to use the statistics to pierce together some data:

 

all 4 deaths occur simultaniously, but only 2 planes where on the airfield

in the track, my bomb explodes right on the spawning/instancing of a player, who spawns into the explosion and dies, before his name-tag-info in the track is turned to blue, it remains white-ish

Asgar, the far away 109, had spawned in on the same spawnpoint and the other remote-killed player "Mr_Oscar" in a Stuka has spawned within seconds of Asgar.. I have no proof, since I have no contact to him, but I assume on the same airfield.

 

my hypothesis so far is that there was some instancing-bug, that the two killed players on the field and possibly two, previously also jointly spawned players on the same spawnpoint where somehow linked together..

 

What are we looking for:

tracks and accounts of similar "remote" deaths that are atributed to a player who is out of reach (Asgar and Mr_Oscar where so far away, they don´t show up in my track)

 

a first bug report was filed here: http://forum.il2sturmovik.com/topic/13160-multiplayer/

 

Has anyone (maybe magz, whom asgar was escorting) tracks from the incident or knows if it is true that Mr_Oscar spawned next to Asgar?

 

Vid trying to explain what happened with my track:

https://www.youtube.com/watch?v=6F2qou07V94

Edited by Dr_Zeebra
  • Upvote 1
216th_Lucas_From_Hell
Posted

Good work Doc, with this information they can probably get closer to a solution :)

Jade_Monkey
Posted

Nice detective work!

 

Looks like you are onto something.

 

I havent experienced yet but im sure it would be very annoying. One of those rare bugs that are hard to track.

BraveSirRobin
Posted

I see you checked his profile. Did you send him a direct message?

Monostripezebra
Posted

I see you checked his profile. Did you send him a direct message?

 I did, but since he is not active on the forum at all I have little hope. I know that maybe Magz, who allegedly was with Asgar, is likely to have a track, though.

Monostripezebra
Posted (edited)

Update: I have just been able to reproduce this bug and I think it may not be related to other players planes but to the spawning and de-spawning process, possibly giving a hint at the ghost plane issue, too..

 

What happened:

 

I flew 2 bombing sorties against one airfield. On the first sortie, player "der neue Mensch" despawned to not get hit.

On the second sortie, I bombed the same airfield, BUT with no players in the bomb radius. The bomb blew up near the spawnpoint (and like in the previous incident) destroyed the NDB-building..(both incidents share this, also a possible conection point?) then suddently player "der neue Mensch" asked me "how?!" because he had blown up in mid air in a completely different bit of the map..

 

Log: http://il2stat.avias...835256/?tour=12

ignore the 2nd bomb, the important bit is the first bomb impact at 21:50:28 in the log

 

this was how it looked in game, recorded from the track:

https://www.youtube.com/watch?v=mNT1ES7IHmY

 

his De-spawning to avoid my bomb had happened around 34 min earlier during my previous bomb run.. same airfield, same spawnpoint:

https://www.youtube.com/watch?v=2LOxg8IvwGo

 

I suspect the whole issue maybe related to the "ghost plane" issue... could it be that player instances who despawn from an airfield after just having spawned in there are not completely removed? That a doublette or something from their instancing remains undeleted there, but still linked to the player id, so damage transmits?

If Asgar or Mr_Oscar could please state if they had despawned recently before the incident? Or maybe some volunteers, to spawn and de-spawn while others bomb the points and we maybe could nail the issue!

Edited by Dr_Zeebra
  • Upvote 2
71st_AH_Mastiff
Posted (edited)

this would explain why I die and some people on the Team Speak state I just blew up in  mid air?!

 

I reported this to Higher ups..

Edited by 71st_Mastiff
  • Upvote 2
216th_Jordan
Posted (edited)

Or it might be a bug like the broken compass and bombsight. it just gets stuck. so it might get stuck when despawning while not everything has loaded for example. Lets assume damage model is split into actual hit dm and blast radius dm, then planes coordiante information for damage model of bomb blasts could get

stuck and the detonation effect is applied to the plane wherever else it is.

If it is one dm model simulation for all and it gets stuck then you could shoot the plane where you see it but not damage it. Lets hope its reproducable. :biggrin:

 

just guessing here though. Hope the devs can clarify how this works. Very interesting bug!

 

This might also explain your tripple heart-attack ;)

Edited by 216th_Jordan
Monostripezebra
Posted (edited)

this would explain why I die and some people on the Team Speak state I just blew up in  mid air?!

 

 

yes this is the case with this specific bug, you explode seemingly at random in mid air.

 

But in this specific bug, it still shows the damage atribution, ie: whos weapong killed you, so you see his name in chat and on the statistics page. 

If you had any instances of mid-air explosions with no plane around, even in the track, there should still be a name to check in the server stats if that player did an airfield attack on a point where you must have had spawned previously in that specific server session

If that is the case, your death is very likely caused by this bug.

I have only been able to produce two clearly confirmed incidents of this bug, both with bombs, so I don´t know yet if other weapons also can have "remote effects"

I have had additional time where I blew up in mid air where there was no player atributed to the damage, but I can´t confirm if that is the same thing or another bug.. it might also have been a flack/network issue, I had described the incident here:

http://forum.il2sturmovik.com/topic/23724-tripple-heart-attack/?do=findComment&comment=368958

 

 Lets hope its reproducable.

This might also explain your tripple heart-attack

 

I have yesterday been able to reproduce it once.. as the "culprit" or cause, but I can´t confirm if it is the same as the "tripple heart attack" where there was no player related to the damage.

 

If I find the time I´ll try it again

Edited by Dr_Zeebra
BraveSirRobin
Posted (edited)

You should report it even if you can't get more details. You may have already found enough to help them figure it out.

Edited by BraveSirRobin
216th_Peterla
Posted

Hi Doc,

It could be that the triple heart attack death was caused by this bug of a player that already left the server? That could explain the absence of a name???

Just thinking loud.

Regards,

Posted

Great find!  Will keep eyes open for it.

Posted

you mention a "ghost plane"? not sure what that is.

.

i used to see, on rare occaisions and not on latest updates, bullets being fired from thin air at no visible target. was always under 1k alt. there was also a ghost airplane sound that fly around (like those old airfield ghosts only in the air). after a bit, i just assumed it was some kind of bug where the 'real' plane was elsewhere in the map. maybe they fixed this one, i don't know?

.

not sure if that would be related to your 'remote bombing' bug?

Monostripezebra
Posted

You should report it even if you can't get more details. You may have already found enough to help them figure it out.

 

if you had read the the first post, you´d notice that was the first thing i did before this thread to gather more data.. :=)

 

 

 

 

 

 

 

on a funny note though: I finally got around edditing another bit of that flight with with the first remote detonations.. had nothing to do with the bug, but overall made the flight very memorable, as another weird thing happened after the 4 bugged bomb kills...

https://www.youtube.com/watch?v=WmNlM0hLq4g

Posted

 

 

yes this is the case with this specific bug, you explode seemingly at random in mid air.

 

i have actually seen that happen online were some one blew up in mid air . At the time i thought over heated engine . ...??

Posted

I've blown up for no reason twice while playing online, once while strafing a train.

 

After reviewing the track, I was a few hundred feet high, but the prop bent back and dust formed around the plane as if a ground impact milliseconds before my plane disintegrated.

 

For some reason, the game thought I hit the ground but I didn't.

Posted (edited)

I've blown up for no reason twice while playing online, once while strafing a train.

 

After reviewing the track, I was a few hundred feet high, but the prop bent back and dust formed around the plane as if a ground impact milliseconds before my plane disintegrated.

 

For some reason, the game thought I hit the ground but I didn't.

This has happen too me also , ground strafing targets in a 190 . 

 

Also flying a E7 low level chasing a La-5 that was attacking a 110 .

 

Same thing bent prop plane fell apart . It was like i had hit an invisible object however i have no track of that one . 

 

No ground objects around but was at tree top level .

 

And going through large gaps of the wooded areas .

Edited by II./JG77_Con
Posted

Looks like we've identified another bug.

Monostripezebra
Posted

invisible objects, thankfully rare, are an allready known issue.

 

Oddly enough, when I collided with an invisible object, which I believe was part of a hangar (I was flying really close by a visible hangar, 1m distance but not touching... as I saw in the track), the stats on TAW recorded that as AAA kill.. why, I have no clue.

 

 

you can see the weird damage entries here: 2x 0.9 damage (1 means plane destroyed completely.. ) one time by AAA other by "No cause", the invisible object. I wonder if that might have been an invisble AAA, as I was not hit by AAA shot that mission,.

http://taw.stg2.de/pilot_sortie.php?id=15875&name=Dr_Zeebra

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