In #developer-talk, nighty said he might release two tools he "purely vibe coded": an opinionated linter/formatter for GMod Lua and a documentation page generator modeled on hexdocs. They process a 1000-file codebase in under 100 ms on his machine.

In #lua-help, CreativeGuy asked whether networkVars are saved for persistent props; they seemed to save in his singleplayer test. Beelzebub answered "afaik yes".

In #developer-talk, Bloom said he is building an app (on the French side) that imports FBX, OBJ and XPS models into GMod as playermodels automatically. It learns from each import; after almost 200 imports the automatic result is nearly perfect. Annie suggested a guided porting interface would be less bug prone.

In #lua-help, .kkrill wanted to draw a model on a transparent background in a render target. Phoenixf suggested render.SetWriteDepthToDestAlpha(false), and .kkrill confirmed that was it.

In #developer-talk, nighty said the main branch uses LuaJIT 2.0.4 and the x86-64 beta uses LuaJIT 2.1 beta 3. Zaurzo added that 64-bit main uses the same LuaJIT as x86-64. nighty described his lua_shared fork: it targets a custom language but should run existing GMod Lua exactly like stock, and isn't public yet. Its threading is worker-based, with message passing between separate Lua states. He also showed Jolt physics experiments.

In #next-update, Zaurzo reported his UI broken on dev. Rubat said it's likely the surface.DrawTexturedRectUV change, and Zaurzo confirmed that was the cause, since RNDX uses the function. He will fix his copy of RNDX, and suggested the new behaviour may need to go behind an argument since it's "already starting to break shit".

In #next-update, Artemking4 said IMesh:DrawSkinned can't use all 53 matrices: it's off by one and wrongly errors on the last bone. Rubat replied that matrix 0 is reserved by the engine as far as he remembers, so DrawSkinned gets 1–52. In his tests, setting matrix 0 did nothing or caused issues. Artemking4 disagreed: bone 0 is a normal bone that also serves as the model matrix for unskinned vertices, and his patched client.dll renders models almost perfectly with it.

In #lua-help, A1steaksa asked what causes Render queue too large, flushing! when rendering an IMesh. Rubat explained the multicore rendering queue is too large: over 32 MB of vertices or indices, or over 15 MB of data in the queue. He named mat_report_queue_status for stats. full metal sergeant 228 said he hit it with too many particle systems.

In #next-update, Gonzo Pipi said Lua autorefresh stopped working for him on 64-bit dev (Windows 11 26H2) and asked how to debug it. Rubat said he added a console print for when autorefresh will certainly not work. On Windows there may be debug output, visible by attaching a debugger such as Visual Studio or WinDbg. Autorefresh changed in the previous day's dev update; he isn't having issues himself.

In #next-update, DMatter04 reported that some addons' InitPostEntity hooks added with hook.Add never run, breaking addons such as Custom FOV. homonovus suggested an addon returns a non-nil value from its hook, and Zaurzo posted a lua_run snippet to find it. On 22 Oct DMatter04 found the culprit, lua/autorun/ultrakill_test_soulorbs.lua from "[DrGBase] ULTRAKILL - Enemies - Act II & Act III", using Zaurzo's whereis tip, and Zaurzo suggested asking the author to fix it.

In #developer-talk, Redox shared a project "made in gmod" that ran smoothly with a group of players. TankNut, after looking at it, said "they've decompiled the game and ported it wholesale". A1steaksa said he isn't impressed if it's AI-made, while Redox said it's too polished to be pure slop. TankNut added he is more interested in the original Ace of Spades than "the Jagex abomination".

In #next-update, Beelzebub shared silk.bzbb.dev. The day before, YohSambre had said he missed the old icon web UI and Billy pointed to the in-game derma_icon_browser; Beelzebub said he was forking an icon browser UI.

In #lua-help, A1steaksa asked how to move a sound while it plays without attaching it to an entity, since CSoundPatch has no SetPos and needs an entity. homonovus thought it impossible without an entity. Rubat said the BASS audio system can do it but the engine sound system cannot.

In #lua-help, Marevin asked how to remove decals without wiping the map's own decals, which RemoveAllDecals() on worldspawn also clears. Rubat linked util.RemoveDecalsAt.

In #next-update, RaphaelIT7 asked whether "Apply that getmetatable() LuaJIT fix someone wanted" was ported to x86-64: his crashes were gone on dev but not on x86-64. Rubat: "if it isn't in the changelog, stands to reason it wasn't yet".

In #developer-talk, Nak explained his navigation system to Zemen. It runs a double A* search from start to goal and from goal to start, meeting in the middle ("a trick GPS use"). The search tracks polygon entry points, and the system reads the map's AIN info_nodes. NPCs such as the 200 antlions in his video run a "dumb" AI while waiting for a path, so they seem to react immediately.

In #developer-talk, Asphaltian posted the v0.2.0 release of VPhysics-Box3D. Earlier, on 16 Oct, BlueShank had argued that Box3D deviates too much from vphysics to be a drop-in replacement.

In #developer-talk, Retcon shared a komstation article about his mod, a Garry's Mod-style sandbox for the PSP.

In #next-update, Redox reported that voice still randomly breaks on the 64-bit dev branch (build 10205 from 16 Oct). A fullupdate doesn't fix it, and snd_restart fixes it only temporarily.

In #next-update, Evgeny Akabenko asked Rubat to publish on GitHub the source of GMod's own, non-Valve shaders: g_bloom, g_blurx, g_blury, g_bokehblur, g_colormodify, g_downsample, g_morph, g_premultiplied, g_refract, g_screenspace, g_sharpen, g_sky, g_sobel, g_sunbeams and g_texturize. not.ejay noted they could already be decompiled half decently with vcs-decompiler, but saw no reason not to publish them.