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IDProjectCategoryView StatusDate SubmittedLast Update
0000317Zandronum[All Projects] Bugpublic2011-03-06 00:052018-09-30 19:59
Reporterunknownna 
Assigned ToTorr Samaho 
PriorityhighSeveritymajorReproducibilityalways
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version98d 
Target VersionFixed in Version1.0 
Summary0000317: Lifts desync for all clients in-game and for newly connected clients if unlagged is enabled
DescriptionIf a client activates a lift by firing at it while having cl_unlagged set to 1, the lift will desync for all clients in-game and for newly connected clients. This can break the gameplay.
Steps To Reproduce1) Start a standard server with the example WAD.
2) Connect a client to the server with an emulated ping of approximately 300 ms.
3) Join the game.
4) Hold the fire button while aiming at the lifts.
5) The lifts will gradually desync when lowering / raising.
Additional InformationSpecial thanks to -=Dark-Slayer=- for reporting this issue.
Attached Filespng file icon Screenshot_Doom_20110306_003332.png [^] (38,538 bytes) 2011-03-06 00:05


? file icon platform_desync_test.wad [^] (7,784 bytes) 2011-03-06 00:06
png file icon Screenshot_Doom_20110711_193052.png [^] (171,716 bytes) 2011-07-11 17:37

- Relationships

-  Notes
User avatar (0001880)
unknownna (updater)
2011-07-11 17:37

FYI, this bug is heavily exploited in AOW2 servers.

> Also elevators break after awhile, not going back up to full height.

It breaks the intended gameplay.
User avatar (0001881)
Torr Samaho (administrator)
2011-07-12 01:59
edited on: 2011-07-12 02:06

I see, this is caused by a design flaw of part how the unlagged code. This should work around the problem.

BTW: The term desync is misleading here since the position of the lifts (at least as far as I can tell) is perfectly synced between client and server. The position is just not what it should be, but client and server agree on the wrong position.

User avatar (0001882)
unknownna (updater)
2011-07-12 02:22
edited on: 2011-07-12 17:26

> This should work around the problem.

It fixed the issue. Good riddance. Hopefully the fix didn't break anything.

> BTW: The term desync is misleading here since the position of the lifts (at least as far as I can tell) is perfectly synced between client and server. The position is just not what it should be, but client and server agree on the wrong position.

Indeed, you're right. And thank you very much for fixing this issue.

Edit:

But I noticed something. It's very trivial, but it didn't happen in 98d: When bots are added into an AOW2 game online, they are seen (Coop spy/info/Weapon.PreferredSkin) as using the fist (SelfHeal) instead of the SSG (Military-DoubleShotgun). It corrects itself if you either reconnect, turn into a spectator, or kill the bots once.

User avatar (0001893)
Torr Samaho (administrator)
2011-07-13 00:21

> It's very trivial, but it didn't happen in 98d: When bots are added into an AOW2 game online, they are seen (Coop spy/info/Weapon.PreferredSkin) as using the fist (SelfHeal) instead of the SSG (Military-DoubleShotgun). It corrects itself if you either reconnect, turn into a spectator, or kill the bots once.

Can you create a minimal example wad and a new ticket for this?

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- Issue History
Date Modified Username Field Change
2011-03-06 00:05 unknownna New Issue
2011-03-06 00:05 unknownna File Added: Screenshot_Doom_20110306_003332.png
2011-03-06 00:06 unknownna File Added: platform_desync_test.wad
2011-07-11 17:37 unknownna Note Added: 0001880
2011-07-11 17:37 unknownna File Added: Screenshot_Doom_20110711_193052.png
2011-07-12 01:59 Torr Samaho Note Added: 0001881
2011-07-12 02:04 Torr Samaho Assigned To => Torr Samaho
2011-07-12 02:04 Torr Samaho Status new => feedback
2011-07-12 02:06 Torr Samaho Note Edited: 0001881 View Revisions
2011-07-12 02:22 unknownna Note Added: 0001882
2011-07-12 02:22 unknownna Status feedback => assigned
2011-07-12 17:21 unknownna Note Edited: 0001882 View Revisions
2011-07-12 17:26 unknownna Note Edited: 0001882 View Revisions
2011-07-13 00:21 Torr Samaho Note Added: 0001893
2011-07-13 00:21 Torr Samaho Status assigned => resolved
2011-07-13 00:21 Torr Samaho Fixed in Version => 1.0
2011-07-13 00:21 Torr Samaho Resolution open => fixed
2012-06-09 13:22 Torr Samaho Category General => Bug
2018-09-30 19:59 Blzut3 Status resolved => closed






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