MantisBT - Zandronum
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IDProjectCategoryView StatusDate SubmittedLast Update
0004043Zandronum[All Projects] Bugpublic2022-10-02 23:062024-03-13 16:00
Reporterauratoostronk 
Assigned To 
PriorityhighSeveritymajorReproducibilityalways
StatusconfirmedResolutionopen 
PlatformOSOS Version
Product Version3.1 
Target Version3.2Fixed in Version 
Summary0004043: Map04 3d Floor glitch
DescriptionThought I should put this glitch on the tracker even though its been around for a while. Sometimes, dying on top of a 3d floor while holding a flag will cause the flag to visually appear on top of the 3d floor, but it actually spawns below it.
Steps To Reproducegrab a flag
die while running off a 3d floor
try to pick up the flag. sometimes it works as intended, sometimes you'll go through it because its on the floor and not on top.
Additional Information
TagsNo tags attached.
Relationships
Attached Files? 3dfloor_dropdesync_01.wad (12,830) 2024-03-13 15:57
/tracker/file_download.php?file_id=2937&type=bug
png Screenshot_Doom_20240313_165558.png (50,548) 2024-03-13 15:57
/tracker/file_download.php?file_id=2938&type=bug
png
Issue History
Date ModifiedUsernameFieldChange
2022-10-02 23:06auratoostronkNew Issue
2022-10-02 23:12WaTaKiDNote Added: 0022429
2022-10-03 01:04KaminskyNote Added: 0022431
2022-10-07 22:12auratoostronkNote Added: 0022432
2022-10-07 23:21WaTaKiDNote Added: 0022433
2022-11-30 05:21auratoostronkNote Added: 0022503
2022-11-30 06:02WaTaKiDStatusnew => confirmed
2022-12-01 13:15KaminskyTarget Version => 3.2
2024-03-13 15:57unknownnaFile Added: 3dfloor_dropdesync_01.wad
2024-03-13 15:57unknownnaFile Added: Screenshot_Doom_20240313_165558.png
2024-03-13 16:00unknownnaNote Added: 0023384
2024-03-13 16:00unknownnaPrioritynormal => high
2024-03-13 16:00unknownnaSeverityminor => major
2024-03-13 16:00unknownnaReproducibilitysometimes => always

Notes
(0022429)
WaTaKiD   
2022-10-02 23:12   
please provide an example wad that can showcase the issue
(0022431)
Kaminsky   
2022-10-03 01:04   
I'm assuming that you're referring to MAP04 "Ralphis's Magical Ice Forts" from anthctf.wad, right? If so, then just to be clear, that map doesn't actually use 3D floors but invisible bridges.

What is "compat_bridgedrops" set to when the issue occurs? It should be disabled to prevent non-solid actors like flags from dropping through bridges.
(0022432)
auratoostronk   
2022-10-07 22:12   
I think the bug is more prominent on 3d floors, but also happens on solid ledges. I think the name came from a video of the bug occurring on Ralphis's Magical Ice Forts on one of the solid pillars, not on one of the bridges. In any case, I've seen it happen a few times on the 2nd map of AuraCTF, "Trenchfoot".
'https://allfearthesentinel.net/zandronum/download.php?file=auractf.pk3 [^]'
Try going to map ACTF02. Compat_bridgedrops should be allowing flags to fall through bridges when this bug occurs.
(0022433)
WaTaKiD   
2022-10-07 23:21   
'https://www.youtube.com/watch?v=O5Md55A__Lk [^]'

i made a video while testing this on actf02, can you confirm that at about 0:20 and 1:17 is the issue being reported?
(0022503)
auratoostronk   
2022-11-30 05:21   
Yes, this is the bug.
(0023384)
unknownna   
2024-03-13 16:00   
With the stripped down example wad, this is 100% reproducible if you stand on the ledge like in the attached screenshot.

Could this maybe be an easy fix? Send important player-dropped items at full precision. It would be important for competitive players to have this fixed.