MantisBT - Zandronum
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IDProjectCategoryView StatusDate SubmittedLast Update
0001052Zandronum[All Projects] Bugpublic2012-09-23 16:552025-03-30 04:28
Reporterunknownna 
Assigned To 
PriorityhighSeverityminorReproducibilityalways
StatusconfirmedResolutionopen 
PlatformOSOS Version
Product Version1.0 
Target VersionFixed in Version 
Summary0001052: NOCLIP projectiles go through floors online
DescriptionI noticed this while testing the morph ammo fix. Projectiles with the NOCLIP flag move through floors/ceilings online. Offline, they slide on the floors/ceilings.
Steps To Reproduce1. zandronum -file noclipprojectile_01.wad -host
2. Connect a client to the server and join the game.
3. Aim at a floor/ceiling and press +attack.

1. zandronum -file noexplodefloorprojectile_01.wad -host
2. Connect a client to the server and join the game.
3. Aim at a floor and press +attack/altattack.
Additional InformationThis is specific to Zandronum.
TagsNo tags attached.
Relationships
parent of 0002286resolved  NOEXPLODEFLOOR desyncs when used with STEPMISSILE. 
related to 0001135confirmed  FLOORHUGGER actor stuck on slopes online 
related to 0001134confirmed  CEILINGHUGGER actor stuck on slopes 
Attached Files? noclipprojectile_01.wad (401) 2012-09-23 16:55
/tracker/file_download.php?file_id=730&type=bug
png Screenshot_Doom_20120923_185237.png (14,178) 2012-09-23 16:55
/tracker/file_download.php?file_id=731&type=bug
png

png Screenshot_Doom_20121102_133224.png (50,476) 2012-11-03 08:59
/tracker/file_download.php?file_id=860&type=bug
png

? noexplodefloorprojectile_01.wad (1,605) 2012-11-03 09:01
/tracker/file_download.php?file_id=861&type=bug
? projectile_clippingbugs_01.wad (3,646) 2025-03-30 04:28
/tracker/file_download.php?file_id=3208&type=bug
Issue History
Date ModifiedUsernameFieldChange
2012-09-23 16:55unknownnaNew Issue
2012-09-23 16:55unknownnaFile Added: noclipprojectile_01.wad
2012-09-23 16:55unknownnaFile Added: Screenshot_Doom_20120923_185237.png
2012-09-23 16:55unknownnaStatusnew => confirmed
2012-11-03 08:59unknownnaNote Added: 0005286
2012-11-03 08:59unknownnaFile Added: Screenshot_Doom_20121102_133224.png
2012-11-03 09:01unknownnaFile Added: noexplodefloorprojectile_01.wad
2012-11-03 09:02unknownnaSteps to Reproduce Updatedbug_revision_view_page.php?rev_id=2896#r2896
2012-11-03 09:06unknownnaPrioritynormal => high
2015-06-06 15:09unknownnaNote Added: 0012545
2015-06-07 13:31unknownnaRelationship addedparent of 0002286
2024-03-25 16:51unknownnaRelationship addedrelated to 0001135
2024-03-25 16:51unknownnaRelationship addedrelated to 0001134
2025-03-30 04:27unknownnaNote Added: 0024368
2025-03-30 04:28unknownnaFile Added: projectile_clippingbugs_01.wad

Notes
(0005286)
unknownna   
2012-11-03 08:59   
NOEXPLODEFLOOR projectiles are also affected by this. It's pretty bad since it causes certain mods (Futur War) to look very bugged online.
(0012545)
unknownna   
2015-06-06 15:09   
I'm pretty sure that this issue is a regression. It worked fine in 98d.
(0024368)
unknownna   
2025-03-30 04:27   
I encountered this issue again while testing 3.2 on server with the Complex Doom mod. In this case it's caused by missiles with -NOGRAVITY applied to them. Some monsters spawn fires and flames as a visual effect that unfortunately sink down through the floor online due to this issue. It's most noticeable in the software renderer since you're actually able to see the sprites move and fall down through the floor there.

I made a new example wad that contains an example of all the issues with the projectiles clipping through the floor. It has 3 pistols, each with its corresponding name tag to make it easier to reproduce the issues without any confusion. They are:

* Pistol_NOGRAVITY
* Pistol_NOCLIP
* Pistol_NOEXPLODEFLOOR

Simply host the wad on a server and aim at the floor/ceiling and fire the pistols with +attack to reproduce the issues. Make sure to use the software renderer.