What causes 'ghosting'?

[Mysterious Stranger]

I've had people always complaining that they ghost in my servers and that they don't in others. Is there a specific cause of  ghosting? Assuming all servers they go to are the same ping. Some say I've got bad settings, can't I just get a 'normal' config...

 

 

[Mog]

I think it's most likely what your server cfg's are. Try posting what your configs are so that we may be able to pin-point stuff.

[afi]

@Sil

[Raz0r]

What causes ghosting? Idiocy for the most part.

[Mysterious Stranger]

Lol I don't get that burial part...

 

 

rconPassword ""
seta sv_hostname ""
seta g_motd ""
seta sv_privatepassword ""
seta sv_privateclients ""
seta g_Password ""
seta g_gametype "0"
seta sv_maxrate "25000"
seta sv_maxping "0"
seta sv_minping "0"
seta sv_master1 "masterjk3.ravensoft.com"
seta sv_master2 "clanservers.net"
seta sv_master3 "master0.gamespy.com"
seta sv_master4 "qtracker.com"
seta sv_master5 ""
seta g_banIPs " "
seta sv_floodProtect "1"
seta sv_reconnectlimit "1"
seta bot_minplayers "5"
seta g_weaponDisable "524279"
seta g_duelweapondisable "524279"
seta g_forcePowerDisable "262141"
seta g_maxForceRank "7"
seta g_ForceRegenTime "30"
seta g_TeamAutoJoin "1"
seta g_teamForceBalance "1"
seta g_log "games.log"
seta g_logClientInfo "1"
seta g_allowVote "0"
seta timelimit "0"
seta fraglimit "0"
seta capturelimit "0"
seta duel_fraglimit "10"
seta g_autoMapCycle "0"
seta sv_AllowDownload "0"
seta sv_pure "0"
seta g_dismember "0"
seta g_saberLocking "0"
seta g_saberLockFactor "0"
seta g_allowDuelSuicide "1"
seta g_maxGameClients "32"
seta DMFLAGS "8"
map mp/ffa3

[Didz]

It could be caused by dmflags 8 (which disables fall damage)? I have no idea what you mean by "ghosting". Also show your complete jampserver.cfg so we know about all the saved cvars (taking out the rcon password of course!).

[afi]

The cfg doesn't have anything to do with it. Restarting the server helps.

http://jkhub.org/topic/533-the-so-called-ghost-bug/

[Raz0r]

I'm pretty sure the OP means 'ghosting' as in 'I am certain my saber went through you but it did no damage, there is no such thing as a fixed time-step physics simulation, latency, or being plain wrong'

 

Hence, idiocy and not understanding causes ghosting.

The most effective method of reducing any visual inconsistencies (e.g. client simulating the saber's trajectory going through their opponent, but server not seeing the same data) is to increase your sv_fps to 40 or such.

I recommend using non-fractional frame-time (ft = 1000/sv_fps). Default is 40, 25 or 20 should be fine.

SP system has more advanced interpolation than the MP system, and doesn't suffer from low sv_fps as much. It has a totally different feel though.

 

If you're running at a high sv_fps and people are still complaining about ghosting, they should probably find something better to do with their lives.

[afi]

We always used the term "ghosting" for the bug that makes you able to go through the enemies model. But if he means the sv_fps thing, you're right with what you wrote.

[Mysterious Stranger]

The only difference as far as I can see is that I run my servers at default saber damage, and the other euro ones that people are used to have 0.5-0.8 for 'skill' reasons. Or that my server is quite large and their own fps gets too crappy for them to see much when it's full.

 

And yup it's that 'I saber u but u no die' complaints. Or 'wtf one normal red swing kills'.

 

Jampserver.cfg has jka default cvars. Anything I didn't put up there would be set to default...by default. XD

[Mysterious Stranger]

Bump...in case anyone has found the 'truth'...

[Raz0r]

Ego and ping, with a touch of low sv_fps when using MP damages (cheat-protected by default). Not even kidding.

[minilogoguy18]

If you're running at a high sv_fps and people are still complaining about ghosting, they should probably find something better to do with their lives.

 

This

[eezstreet]

Running on a Linux server. Windows servers possibly don't have the issue.

[Mysterious Stranger]

Funny how the complaints come from people who played on a Linux server THEN my Windows server. No difference except saber damage in the Linux server is reduced...

 

I'll raise the sv_fps to 30 and see what goes.

 

The only other thing I can think of is that there's misc bsps in the map itself which drops fps for those with crappier pcs. But I have the same complaints from a similar server that has no misc bsps.

[eezstreet]

We've noticed a similar phenomenon in OpenJK which was only experienced in Linux servers, so..

[Raz0r]

We've noticed a similar phenomenon in OpenJK which was only experienced in Linux servers, so..

No, that bug was experienced in Windows servers too and does not affect whether or not you can hit someone, only if your saber can block incoming attacks. It's also extremely obvious when it does happen.

[Mysterious Stranger]

Speaking of blocks, I've been told that my servers are extra blocky too. Personally, I can't tell with my 350 ping :x

[Lazarus]

Server wise you should always check that your server running is in a decent way. You say you get 350 ping on your own server? Does it then occur to you that you maybe picked a wrong server host? Where do you host it? What service is it running? Nowadays, you can just run a JKA server on your own machine if you'd like, or ask somebody to run it for you (I got a friend who does that, because of an old spare pc) 

 

You should also consider the fact that running a server where your code  " seta sv_pure "0" " allows the player to use costum content and content that is not installed on the server. I bassically could mod a light saber that way and use it to smash your brains out in one blow (I loved that megatron hammer from Zelda, Ocarina of Time which a friend of mine modded a long time ago) A lot of costum content makes your server also unreliable, because we cant see what is used. We all see Kyle Katarn with a normal lightsaber if we dont own a certain skin and/or weapon, so often people inmideatly jump into the offense. Those are things you might also wanna take in reconsideration. What is allowed, and what is not. Next to that,

 

Reload maps also every so many hours (we do mostly 2 or 3 hours)  or do a server restart from time to time. Its like your own computer, if you keep it running 24/7 without reboot, your computer will at some point also suffer performance issue. The server's cache will eventually fill up and there is no way to dump it unless your reboot/reload/reset.

[Mysterious Stranger]

I'm part of an international clan and therefore we have EU and USA and Asian servers. I'm from Asia so I get 350 to a EU server. But the people complaining about blocks and ghosts are mainly Europeans in the EU servers. The current EU servers I have are from reputable game server hosts.

 

Custom sabers from clients don't work even if you have sv_pure 0. Unless the saber is in the server itself, which there are none in my servers.

 

Yup I do restarts before game server time hits 6000 minutes. Actual server gets restarted every 3 days.

 

Anyway I'm just gonna go back to ignoring the complaints. After all I have the reaffirmations from coders here that it's mainly clients themselves. Personally I think people ought to play more on higher ping servers...then perhaps they would moan about ghosting less.

[Raz0r]

Talking to rww right now, he has plans to improve the collisions even more =]