Sam Seltzer-Johnston
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Sam Seltzer-Johnston
@sbseltzer.net
510 followers 1.1K following 1.5K posts
Freelance #GameDev
Sr Engineer at Exis Interactive
NPC systems for Dragonhold: https://store.steampowered.com/app/1510330/Dragonhold/
Co-developed ExoCorps: exocorpsgame.com/steam
He/Him
😷
sbseltzer.net
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sbseltzer.net
So the GMod workshop addon was busted but I found their Github repo and installed it manually just fine. Really wishing I had some friends to play with. The custom gamemode scene on GMod is super dead these days.
Screenshot of a sloppy GeoForts base I made in GMod. View is first-person, holding some kind of automatic rifle.
October 26, 2025 at 10:52 PM
sbseltzer.net
I wonder how long it would take for me to make a reasonably fun GeoForts clone in Unreal.
October 26, 2025 at 7:01 AM
sbseltzer.net
Hooo boy I should NOT have learned how to make `BlueprintAutocast` functions... #UnrealEngine #UE5 #UE4 #GameDev
Screenshot of Unreal's blueprint editor, showing an automatic conversion from Object to Character.
October 17, 2025 at 10:31 PM
sbseltzer.net
whew really starting to feel the storage space squeeze...
Windows explorer window showing how full each drive is. All 3 are nearly full and colored red. They're named, from left to right, "Windows (C:)", "DevDrive (D:)" and "Borderworld (X:)" The last one is a Half-Life 1 reference. 😁
October 10, 2025 at 9:04 PM
sbseltzer.net
I have narrowed it down to some form of math/boolean evaluation problem. Here is a minimal reproduction on Win64 Development Editor configuration:

Comparison A resolves to True
Comparison B resolves to False
They should both fail!
volatile FVector V = FVector{FMath::Sqrt(-1.0), FMath::Sqrt(-1.0), FMath::Sqrt(-1.0)}; volatile double X = V.X; volatile double Y = V.Y; volatile double Z = V.Z; volatile double Tolerance = UE_KINDA_SMALL_NUMBER; volatile double dX = FMath::Abs(X-V.X); volatile double dY = FMath::Abs(Y-V.Y); volatile double dZ = FMath::Abs(Z-V.Z); // Comparison A { volatile bool bTolerates = (dX <= Tolerance) && (dY <= Tolerance) && (dZ <= Tolerance); bool bResult = TestTrue("InvalidVector == InvalidVector", bTolerates); UE_LOG(LogTemp, Warning, TEXT("Result: %d %f %f %f %f"), bResult, dX ,dY, dZ, Tolerance); } // Comparison B { volatile bool bToleratesX = (dX <= Tolerance); volatile bool bToleratesY = (dY <= Tolerance); volatile bool bToleratesZ = (dZ <= Tolerance); bool bResult2 = TestTrue("InvalidVector == InvalidVector", bToleratesX && bToleratesY && bToleratesZ); UE_LOG(LogTemp, Warning, TEXT("Result: %d %d %d %d"), bResult2, bToleratesX, bToleratesY, bToleratesZ); }
September 7, 2025 at 12:02 AM
sbseltzer.net
A very willing subject
September 1, 2025 at 4:31 AM
sbseltzer.net
This is the most photogenic jumping spider I've encountered yet
September 1, 2025 at 4:29 AM
sbseltzer.net
I fell backward out of my chair the first time I got attacked by a zombie in Half-Life.
Screenshot of zombie enemy in Half-Life.
August 24, 2025 at 11:23 PM
sbseltzer.net
I guess I'm old enough that some of my games don't show up on here. For example, I had The Orange Box on disc already and registered it on Steam. I guess those games don't count toward purchase history in the Steam interface. Note: The Dec 28, 2009 purchases were gift purchases.
Steam purchase history from bottom to top: Feb 17, 2007 - Garry's Mod Nov 15, 2008 - Left 4 Dead Nov 15, 2009 - Left 4 Dead 2 (preorder) Dec 28, 2009 - Garry's Mod, Half-Life 2: Episode Two, Counter-Strike: Source | NOTE: This was a gift purchase May 14, 2011 - Portal 2 Aug 11, 2011 - Limbo
August 15, 2025 at 6:15 AM
sbseltzer.net
took some bad pictures of some good bugs today
monarch butterfly feeding on milkweed flower fuzzy no-touch looking caterpillar, likely the larvae form of some kind of moth - mostly shades of gray and orange with black spots
July 23, 2025 at 1:55 AM
sbseltzer.net
got another pic of this tree frog on glass - look at the lil face!
a tiny tree frog climbing on the outside of a window, peering in!
July 21, 2025 at 12:08 AM
sbseltzer.net
Tiny visitor 🐸
A tiny tree frog clinging to outside of a screen, viewed from indoors
July 20, 2025 at 3:43 AM
sbseltzer.net
Found another one a year later. Not as large as the first one but still a big bug.
Female dobsonfly on pavement bricks.
June 9, 2025 at 11:20 PM
sbseltzer.net
Had to look through my old camera uploads but I found her!
Absolutely massive female dobsonfly on a sidewalk.
June 9, 2025 at 11:18 PM
sbseltzer.net
Downright criminal that Dog Soldiers isn't on here. It's still my favorite werewolf depiction.
An absolutely massive werewolf. From the movie Dog Soldiers.
June 4, 2025 at 11:57 PM
sbseltzer.net
also just gonna say ExoCorps was made in UE3 and most players thought we were on the latest UE4 at the time so it's really more up to the designers/artists how game perf and fidelity are received than the engine vendor.
Screenshot from ExoCorps: futuristic exo-soldier posing with weapon in desert Screenshot from ExoCorps: futuristic drone robot flying in a desert Screenshot from ExoCorps: a mess of missile swarms and bullet trails in the sky Screenshot from ExoCorps: first-person view with weapon and HUD in a vast rocky desert
June 3, 2025 at 8:38 PM
sbseltzer.net
horse staring into the distance on a beach. image just has the words "MAN" at the top.
May 21, 2025 at 8:35 PM
sbseltzer.net
lol loving the last 3 bullet points here
Can't be replayed "Surprise Chats" featuring the worst story in videogame history The Unstuck Guarantee - struggling to complete a level? we discard it! Ultra streamlined user interface - you can't even choose levels Supports controllers, keyboard + mouse, mouse only, and keyboard only (OG Doom 4Evah) Tweak everything including FOV, chaos, difficulty, performance, flashing Everything has been sacrificed to fill your screen - there are no empty spaces Never gets faster, only denser (like you) Not a game, an assault You'll Learn Nothing
May 21, 2025 at 3:39 AM
sbseltzer.net
I just cannot believe such a calm house centipede exists that it can rest on a human hand without wilding out. What must life be like for this creature?
Photograph of a captive-bred house centipede resting on a human finger. House centipedes are usually too afraid of humans to let you get anywhere near them so it's kind of remarkable to see one being held.
May 17, 2025 at 5:04 AM
sbseltzer.net
Anyone know who this spider is? Haven't seen any ants for a couple days now and I think this is why. 😅
May 15, 2025 at 9:21 PM
sbseltzer.net
among my favorite frames from frieren
Single frame from Frieren. Depicts a small orange bird flying above a forest at explosive speed with a massive dust cloud where it took off, well on its way to breaking the sound barrier.
May 10, 2025 at 4:47 PM
sbseltzer.net
Not terrible for a first attempt!
A close-up photo of a very frightened ant.
May 7, 2025 at 1:52 AM
sbseltzer.net
I remember at the eclipse last year I was sitting in the grass and kept finding them on my body and my internal monologue was always like "omg look at the little guy! must be careful not to crush the tiny blessing uwu"
My photos suck but this is what they looked like:
a tiny jumping spider on fabric. it's mostly light gray with reddish spots.
April 20, 2025 at 2:34 AM
sbseltzer.net
Just look at those big curious eyes!
photograph of a tiny jumping spider on a leaf staring at the camera with its head tilted to the side inquisitively
April 20, 2025 at 2:25 AM
sbseltzer.net
Found some old photos from the very first Unparty at GDC. The Palace Hotel, March 17th 2016. Yesterday was Unparty's birthday! 🥳
@muditaheart.bsky.social @chasebethea.bsky.social @chrisdeleon.bsky.social
Photo inside a fancy hotel ballroom full of mingling game developers Photo inside a fancy hotel ballroom full of mingling game developers Photo inside a fancy hotel ballroom full of mingling game developers Photo inside a fancy hotel ballroom full of mingling game developers
March 19, 2025 at 1:11 AM