ZDoom

the custom items or monsters did not show up. You mention actors, plural. As I touched on in my post, actors need to have a unique doom editor number, which is supplied in the DECORATE definition. ACTOR CrackoDemon 5123 https://imgur.com/X1A5hNB Without that number UDB cannot see the actor. Maybe ...

In the case of new actors like monsters, weapons, decorations, etc. you will find that Ultimate Doom Builder is useful only after the actors have been created with either Slade3 or a text editor like Notepad++. Once the actor has been created then UDB is useful in populating a map with such actors ...

In a nutshell: To start with, there are a number of Doom map formats, https://doomwiki.org/wiki/Map_format https://doomwiki.org/wiki/Map_format and source ports https://doomwiki.org/wiki/Source_port https://zdoom.org/wiki/Source_port and it seems that every beginning computer programmer is dead set ...

imagine wrote: ↑Wed Jul 09, 2025 5:53 pm The next question I've just faced:
what's the grey circle in the zenith? I see it with my custom sky as well as I saw it with the original DOOM sky texture.

I have no idea and don't even want to guess.
Please, provide a link to the map.

This sky in your map is not a skybox but just a sky image. To have a new sky image in your map MAP01.wad (UDMF), all you need to do is import the sky image with Slade3 and name it RSKY1 https://imgur.com/v5AlK3x However, there are a few caveats you need to consider : some source ports do not support ...

It's easily doable

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It could be that your problem is the doom2.wad which came with the gog download,
KEX DOOM2 engine vs classic DOOM2 engine.

Compare the file size Version 1.9 is 14,604,584 bytes with the one on your harddrive.

Kinsie's Reelism 2 version 1.23hf2 works well with GZDoom 4.14.2, with no other files (like id24res.wad extras.wad) loaded. https://imgur.com/qWwDy3N Also works well with the addon Reelism 2 - Piter's Reel Fudge Pack.pk3 Here is my logfile: Log started: 2025-06-24 16:37:31 GZDoom version g4.14.2 W ...

From your screenshots I cannot tell what exactly you did, but constructing a platform (62 or any other, see the wiki)

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is not really that difficult:

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example pwad

I would suggest that you just load brutalv22test4.pk3 to begin with
and then add each additional file, one at a time.
I'm sure that you will find the offending file pretty quickly that way.

GZDoom 4.14.2 UDB 3.0.0.4237 GZDoom: DOOM2 (UDMF) action special: https://zdoom.org/wiki/Stairs_BuildUpDoomCrush test pwad: https://www.mediafire.com/file/2pjvanzuyjs0ypl/273_TEST.7z/file The staircase is buiding ok, but I cannot figure out how the crushing action works. https://imgur.com/LeJmEqA I ...

That seems incredible.
The only time that would happen is if you also load id1-weap.wad from the LoR mod.

Perhaps, if you have GZDoom generate a logfile then you may find out what files are loaded during startup.

It seems to me that you are going to a lot of trouble for little benefit. You could simply specify a folder in the ini file where to save a screenshot. eg: screenshot_dir=D:\SCREENSHOTS\SCREENSHOTS_GZDOOM To expand on that a bit, I use these settings in the autoexec.cfg file bind h "wait 2; r ...

i tried entering it manually without highlighting aniting the value entered was 700: 20 seconds but it reverts back to zero after applying You can enter 700 either way https://imgur.com/cUrdUVa did you set up the stair sectors properly? https://imgur.com/vYTvk8U with emphasis on the linedef ...

Since I do not know how HD-Overhaul-Doom is structured I would suggest to brake it down and introduce one section at a time to find out which part is causing the problem. So, just add the textures, then add models, then add shaders, etc until the offending part reveals itself. I know it probably ...