So hypothetically you could kill all the monsters in a level, and then get killed before the exit by a clipping projectile

@TommyRobinsond20

2 жыл бұрын

Imagine the rage!

@0neDoomedSpaceMarine

2 жыл бұрын

Talk about getting scammed.

@Mixa_Lv

2 жыл бұрын

Hmm, how about playing Go 2 it but with modded projectiles that never collide with walls, so this kind of bullshit and chaos was even more likely to happen?

@0neDoomedSpaceMarine

2 жыл бұрын

@@Mixa_Lv Are you playing with a GzDoom mod? The hit detection in GzDoom is mostly much more reliable, so in most cases it should basically not happen.

@jaywolfenstien

2 жыл бұрын

Imagine this glitch ruining your world record speed run.

“You hear a Mancubus talking smack about your mum” already love this

@miltiadiskoutsokeras9189

2 жыл бұрын

Mancubus delinquents. What a society are we bringing our children too.

@ViviDotArchive

2 жыл бұрын

@@miltiadiskoutsokeras9189 we truly live in a society

@pointers2010

2 жыл бұрын

Civvie was right, the mancubus does say "hump your mom"

@markus-hermannkoch1740

2 жыл бұрын

Mancubi are pigs. Even Romero couldn't quite cover that one up.

@rautamiekka

2 жыл бұрын

Ha ! If he knew what kinda shit my mom is, he'd either be too ashamed or realize it's pointless :D I told GmanLives the same :P

" We like fireballs, let's give them IDCLIP. " - ID Software, probably.

@ReverendTed

2 жыл бұрын

It'll always be IDSPISPOPD for me.

@robotnikkkk001

2 жыл бұрын

........JUST ADDING *+NOCLIP* FLAG SOLVING PROBLEM FOR EVERY KIND OF PROJECTILE .....BUT THERE'S EVEN MORE WEIRD THING......ABOUT *A_VileStart* ACTUALLY IGNORES LINE OF SIGHT......FOUND IT OUT WHEN MAKING ARCHVILE BOSS....AND FIXED SO IF NOT IN LINE OF SIGHT,NO A_VileStart =...

@KodicMavery

2 жыл бұрын

@@robotnikkkk001 what

Fun fact: this is actually how shaped charge projectiles penetrate tanks.

@i-v-l9335

2 жыл бұрын

Yup. For door charges they use water as the barrier for force projection on the back side if I remember correctly.

@BlueSmash_404

2 жыл бұрын

*World of Tanks fails flashbacks*

@ethribin4188

3 ай бұрын

Not exactly, but practically. Yes.

@sunrisejackdaw1779

3 ай бұрын

...no?

@armorhide406

3 ай бұрын

​@@sunrisejackdaw1779Explosion forms a jet of particles It functions a lot like a tickrate check to me: explosion happens at a tick, but there's a "gap" and then the jet goes through a "thin" wall since it has such high penetration

"Walls? From where we are shooting, we don't hit walls" (probably, one of the Dead Simple mancubi)

@liangseng7474

2 жыл бұрын

When this fireball hits 88mph, you are going to see some serious sh*t

@plasmaoctopus1728

2 жыл бұрын

Could just be an early example of bullet wall penetration in fps games? 😁 Everything might as well be plywood compared to those fireballs!

@5spec

2 жыл бұрын

'sup fellow top commenter

@5spec

2 жыл бұрын

@@liangseng7474 i get the reference. nice one

@liangseng7474

2 жыл бұрын

@@5spec Back to the Future is one of my favourite movies

That guy's Patreon was worth it just to make you read "Agonizing Rectal Pain." Also very informative video!

@doompriest

2 жыл бұрын

"beaks make me coom" is even better.

@MRTOWELRACK

2 жыл бұрын

I first heard about Agonizing Rectal Pain on Digital Foundry. Legend.

@sheilaolfieway1885

2 жыл бұрын

i bet people do that just ot hear the words read out loud

@rpcheesman

Жыл бұрын

The way he said "Riley!" in a surprised tone got me :)

Good things in life: Chocolate Friendships Decino uploading a yellow-background video

@asticlol

2 жыл бұрын

agreed

@user-xu2pi6vx7o

2 жыл бұрын

Bad things in life: Dark chocolate Enemies Decino uploading a non-yellow background video

@Sicklxy

2 жыл бұрын

@@user-xu2pi6vx7o how is that bad? His non yellow background videos are still bangers

@asticlol

2 жыл бұрын

@@user-xu2pi6vx7o HEY SHUT UP DARK CHOCOLATE IS SUPREME AND NORMAL DECINO VIDEOS ARE AMAZING TOO

@user-xu2pi6vx7o

2 жыл бұрын

@@asticlolThe yellow background ones are unique and informative. The regular ones are just an unremarkable let's play. Also, your Caps Lock key seems to be broken.

the overflow glitch is really fun - there's a map in NoYe called, well, Overflow, where you have to fire rockets down a corridor for two minutes and then hide in a small alcove while a couple hundred enemies spawn in front of you, eating your old rockets (and your new ones, you have to team up with your past self!)

@lilddm8558

2 жыл бұрын

That sounds sick as hell!

If you're having trouble being hit by projectiles clipping through walls, then the solution is obvious: simply jump when the demon fires at you. That way, even if the projectiles do clip through the wall, they'll simply fly over your head harmlessly when they reach you!

@user-xu2pi6vx7o

2 жыл бұрын

Except Doomguy is a paraplegic in a rocket powered wheelchair.

@Distriived

2 жыл бұрын

@@user-xu2pi6vx7o So That explains why he can go so fast for very long distances.

@user-xu2pi6vx7o

2 жыл бұрын

@@Distriived That's actually a little doom community in joke, explaining why, in the original ports of the games, Doomguy can outrun a car, but can't clear a knee high ledge.

@Weskerdize

2 жыл бұрын

But here's the thing: He doesn't know how to jump

@AB0BA_69

2 жыл бұрын

@@user-xu2pi6vx7o if the in-game "architects" for doom levels were not dead from the demon invasion they would catch such hell in court for being out of compliance with ADA

As an extra fun fact, this effect is also behind the BLJ in Mario 64. In fact, all video game movement is effectively teleportation if you don't code in some sort of interpolation. If I'm not mistaken, that's what the FASTPROJECTILE flag does in GZDoom.

"You know, whenever I want to analyse a feature in Doom I always think: huh, that's not too complicated. Finally a short analysis video that won't take me a month to make - but then I discover stuff like..."

don't forget, the fact that mancubi always shoot multiple times even after their target is out of sight also makes their projectiles do this more often

@idogaming3532

Жыл бұрын

So do the cyberdemon, and sometimes the chaingunner.

@Bober26681

6 ай бұрын

@@idogaming3532 yeah but rockets can't go through walls and chaingun bullets aren't projectiles

@idogaming3532

6 ай бұрын

@@Bober26681 rockets most certainly can.

Pro Tip: In order to prevent projectiles noclipping through walls, simply prevent the monsters from shooting at walls.

so interesting to finally have the nuts and bolts of this explained. In Map29 of Scythe the room at the top of the lift with shotgunners has mancubi outside, and that wall there is terrible at keeping their fireballs out.

@y2keef

2 жыл бұрын

Get outta here and go make more videos for your new subs (including me 😜)

@OblivionWalkerVerified

2 жыл бұрын

fancy seeing you here. just saw that video on 1.666 changes in doom 2

@i-v-l9335

2 жыл бұрын

I seen this mechanic used in Extermination Day on a few of the latter levels. I thought at first it was a one way wall but nope, it was an Imp behind a wall. The second time was with a hell knights but I killed it with hitscan and melee when I figured out it wasn't a custom statue wall shooting it. I couldn't kill the imp one though.

That's horrifying... Imagine a stray projectile hitting you when you're low on health, and said projectile hits you either on your way to the exit switch or when you're about to press it. Also, someone should have a Petron named "Mother Demon's Womb." or another twisted Doom-related pun for Decino to say during the Credits.

Doomguy’s eye-bulging 😐 face will always be unsettling.

Saw this happened in Doom 2 map 8 when Looper was speedrunning. Baron from the room to the right of the exit room shot through the wall into the pre-exit room, hit Looper, and dropped him into the death pit.

@0neDoomedSpaceMarine

2 жыл бұрын

Oof!

@TheBeast94YT

2 жыл бұрын

Now THAT is real bull.

Awesome video as always. Just ironic that you increased the "shout-out Patreon limit", and now it seems we're just as many (if not more) than when you inforced the new limit. Crazy. Keep it up!

@SpunkMayo

2 жыл бұрын

Enforced

@Jarcky

2 жыл бұрын

How have you been around this site for 14 years

@anew742

2 жыл бұрын

Moe Lester How have you been around this site for 3 years

@BoldTint

2 жыл бұрын

The real question is "How have you been guys?" < 3

Man I've been hearing random fireball explosions in my games forever, finally know what that's about. I've got a good video idea! When I'm in normal Doom 2, sometimes I'll noclip out and run in a straight line for as long as I can. Eventually, I'll start hearing aggressive monsters, even if all the monsters in the map are dead or most of em, but I'll hear a bunch of monsters, then eventually I'll end up back at the map borders because of position overflow, and the noises will stop.

@ArnieMcStranglehold

2 жыл бұрын

That's some borderline creepypasta stuff right there.

3:05 “Did I pull these numbers out of my a*s? Ehh, kind of.” - Decino 2021

Good to know, never knew a wall would scam me in a game.

4:07 he had a... BONE to pick with that Revenant aaahahahahaha gottem 🦴

@decino

2 жыл бұрын

Banned.

@TheBeast94YT

2 жыл бұрын

@@decino BURN BURN

"Agonizing Rectal Pain" Never thought those words would come out of your mouth in that order XD

@lankymaccrazyhair264

2 жыл бұрын

Kinda sounds like the name of a level in a sunlust-esque wad. I'd name a level that, but i don't make doom levels...

@Lemon_Inspector

2 жыл бұрын

That's what usually happens to Cyberdemons when Decino uses his fists on them

Analysis videos like this really make you appreciate just how intricate and complex Doom’s programming is and how ahead of its’ time it was when it was released.

Good stuff. I didn't know fast monsters also triggered this bug. FYI, you mixed up cardinal and ordinal. Cardinal is NESW; ordinal is diagonals.

@ZeldaTheSwordsman

9 ай бұрын

Good to see someone point this out. This should perhaps be pinned.

That answers that mystery from Hell Revealed! I just recently watched that video and remember how confused you were about it at the time. It’s very interesting to now learn how that happened and I can appreciate it even more for how truly rare that actually was! Thanks for this video!

Another "yellow video" topic suggestion: I was always really amazed about Doom's lighting system, especially in terms of rendering its world in the original 8 bit video mode. The rendered colors of a texture or a sprite depends on the brightness of the sector and the distance from the player, except when using light amplification, when everything is rendered with their original colors (I guess). I would really love to learn about how this is achieved. What palette is used and how are the rendered colors mapped to achieve that shading? Is there a restriction for usable colors for the textures and sprites? Is the palette temporarily altered when using a rad suit, berserk or invincibility and when receiving damage? I suspect so but then how is it achieved in invincibility mode that the sky and the HUD remains unchanged? Do they use separate palette colors? It would mean that all textures are allowed to use just a strict subset of palette entries to work properly. Some specific textures (eg. lamp and candles) remain always bright even in the dark or from far away. Are they just left out from shading or do they use specific palette entries that are simply not transformed? Or isn't there any restriction for the textures and is everything just quantized to a generic static 8 bit palette (eg. RGB332)? Of course, all of these are not relevant when using modern Doom engines with 32 bit rendering. But achieving all this using just 256 colors... it must have been quite challenging.

that footage from the hell revealed playthrough made me feel kinda nostalgic

It's amazing how many small details there are, I dread the day you genuinely run out of things to explain Do you see yourself doing these kinds of videos for other games in the future?

@decino

2 жыл бұрын

I have some planned for Quake and Quake II, but that's about it. For Doom I won't run out of analysis stuff for a looong time.

@QuakeGamerROTMG

2 жыл бұрын

@@decino This is the best news I've received all year

@Nikku4211

2 жыл бұрын

@@decino Will you do any for Heretic and Hexen?

@decino

2 жыл бұрын

I won't. That's Dwars's territory.

@niezbo

2 жыл бұрын

@@decino possibly Q3/QL as well ?

4:50 the disappointment in his voice as he has to read that name

Doom is so fascinating even all these years later, what a game

All of these years and I didn't know this was a bug in the game. Makes me wonder how many times I've died to this and raged because I couldn't see any monsters shooting projectiles at me.

I love how Doom is nearly 30 years old and yet not only does this channel frequently find something from it to talk about but they always manage to make it extremely interesting.

For anyone wondering if this issue occurs in other games or looking for something to relate this to, this is essentially the same reason why Mario can sometimes clip through things in Super Mario 64 given good enough speed and angles. I don't recall the specifics unfortunately (though if you want that you can watch some UncommentedPannen), but the gist is that if the wall or floor is thin enough and Mario fast enough that Mario can be in front of it for one frame or so and then behind it the next, Mario will go through it even though its solid.

I think the one way I can interpret the mancubus fireball passing through stuff lore wise is probably because the fireballs (even from other enemies) are so hot that they phase through walls thin enough but dissipate upon contact with flesh or thicker walls. Basically like throwing globs of hot gasoline at foes.

The collision size of mancubi fireball is always so surprising even when you know it and how it always tends to catch you off guard and now this on top

04:15 Freakin' insane. That explains why so many times while playing in UV-Fast I'd ocassionally hear projectiles exploding

That explains the random explosion sounds that scared me during all of those years playing Doom. Happens around maybe once or twice a year to me but it always gets me good. Luckily the Mancubus fireball thing hasn't happened to me but more than way too often I get blasted in the face by the Revenant missile clipping through the wall. I guess Im just unlucky when it comes to the spook-bois.

@RocketoPunchee

2 жыл бұрын

2:29 "...this missile will never fail to collide." I guess decino didn't explore all the possibilities with the revenant missile since this has happened "more than way too often" to you.

Doom: A game so merciless at times, that not even the walls will save you.

Yay my first time getting to be a patreon! Awesome video as always 👌

Another excellent analysis video. I really like how you visualize everything as well.

So that's what caused Hexa's first death in his Doom 2 revisited let's play.

4:20 this is the first time I noticed the *Get to it* map has a scared face in the top.

Awesome. I did not know that the projectiles could wrap around the map and come back in from the void. I am more than sure now that I have heard the sounds of various fireballs hitting the boundaries of the map seconds after combat over the last 2 decades of playing.

Always interesting to learn about how they used to optimize things in the past, even when the methods may have had their own shortcomings. Wonder if they left this in on purpose like this though in those few instances, cause as you mentioned, they seemingly changed few of these in a way that should prevent collisions to fail. Almost seems like this may be the case for one thing or another... Makes you wonder x)

@musaran2

2 жыл бұрын

Probably, because to make it run on machines of the time they had to massively cut corners. ...literally in this case.

@Winasaurus

2 жыл бұрын

"Ok, but wouldn't it be funny if we position the mancubi here, and make their shots a coin flip to wallbang you?" "Hell yeah, go for it"

decino, you've got me playing on PRBoom+ and I have to say, I like it. I played on GZDoom mainly before, but I've been using Boom and I can see why you like it. There is just something about it. It feels very vanilla, but also smooth and responsive, as well as fixing the blood colours. You've turned me into a purist. A couple of years back when i first started watching this channel I was playing with Smooth Doom, IDKFA.WAD and Bolognese mod. Now all i want is the spritefixes, widescreen hud and sweet midi.

That's first time I saw someone mix the funny game with science and programming Thanks very much bro for your nice work

the amount of info this guy dives into to keep up with content is insane. major props

That Doom lesson on a good Sunday morning, thanks decino, amazing work

Dude! DUDE! I *just* started your Hell Revealed playlist today, and when 3:45 happened, I thought to myself, "Surprised there's no yellowback video on clipping fireballs..."

Mancubus is too strong when they're telling your mama jokes xD 0:42 decino is doing speedrun lol It's interesting that you can still get surprised by 20+ years old game. It'll never stop surprising us. Doom is *Eternal* xD

The best part of Decino videos? Listening to him say all the naughty names during the credits... xD

Any chance the no clipped projectiles can harm the icon of sin? Also, going to guess gzdoom fixes this unless you play with strict compatibility set?

@decino

2 жыл бұрын

I haven't tried, but I believe the vertical angle is too steep for projectiles to hit Romero's Head without hitting the floor from below first. Pretty sure GZDoom strict fixes it.

@RononDexXiii

2 жыл бұрын

@@decino I guess this could be only TAS strategy but how about jumping into the brain's opening and then use cacodemon's fast projectiles? Those have gaps of 8 bits and caco's can fly, ergo altering the angle. Couldn't there be a way?

@0neDoomedSpaceMarine

2 жыл бұрын

GzDoom uses much tighter collision detection by default, preventing Mancubus fireball shenanigans and making the player's melee much more reliable (in Vanilla it's really difficult to punch or saw a Mancubus or Arachnotron, but in GzDoom it's as easy as any other monster). I think it lets you use the old collision detection, but I fail to see the point when the improved collision detection is one of the biggest reasons next to mods to be using GzDoom.

@zakazany1945

2 жыл бұрын

You can use the old detection in GZDoom, AFAIK

@cameronabshire1195

2 жыл бұрын

GzDoom *mostly* fixes it, but if you have modded a very fast/small projectile, there is a chance it may noclip. I'm guessing this is just because GzDoom checks tics at twice the rate that original Doom did.

I didn’t actually know walls weren’t solid all the way through! I love these videos, this game has a lot to unpack behind the scenes.

@lankymaccrazyhair264

2 жыл бұрын

It's actually rather rare for walls in games, even today, to be solid all the way through! It's rather slow to make all those extra collection calculations, so many games, especially 3d games and games made on now-old hardware, don't have solid terrian, just solid edges. Doom is both (ok yeah it's 2.5d, close enough for the sake of this explainations) so there is no way it could have had completely solid walls and still run even somewhat decently

This stuff is fascinating. Kudos to you for taking time to analyze all of these.

It's incredible how, 25 years later, we are still talking about this engine. It's a lesson in game design!

Big Mac Davis never uses a wall against Mancubus, because it uses projectiles and why block when you can dodge, he's such a strafing pro like any Doom god.

4:26: When viewed overhead, this map looks exactly like a monkey covering its ears! :D

Amazing as always, great work, decino!

I knew about this phenomenon but as usual your visual aides and thorough explanation made it perfectly clear. Well done as usual man.

This was one of the most annoying things I’ve ever put up with in doom.

@zungrysoft

2 жыл бұрын

I've never encountered this issue before, so I'm guessing GZDoom fixes this particular bug.

@Moleoflands

2 жыл бұрын

@@zungrysoft GZ fixes block map and this bug by default.

Well the game doesn't say that nightmare isn't even remotely fair for nothing

As I said before, your videos are a full Game Design course on a real project. 100/100 would enroll to such a course.

This was great, cheers dude! Always love the game mechanics videos.

The day was meant to be this good. Thanks!!!!!

It's great that you covered this bug, I remember a Hell Knight projectile clipped through a wall while I was playing DOOM 64 on the Nintendo 64, in Level 06: Alpha Quadrant. I swear I was able to re-create it, but not in the 2020 PC port, then again that was 2-3 years ago since I last played that game and I can't exactly remember. Also how long does it take to make these Analysis videos? Especially ones which are around 10-15 mins long, I've tried something similar and it took me around a month (then again it was a completely different game and it takes a while to set it up).

@decino

2 жыл бұрын

A few weeks depending on the length and visuals.

@Jobby_James

2 жыл бұрын

@@decino Interesting, thanks for responding!

This is a bug called tunneling and is quite common in game projectiles like this if not fixed. There are numerous solutions, but a common one is not to detect collision on the projectile, but actually on a ray that is calculated between the previous position and new position - that way it sees if anything between the two positions had any walls or the such between them.

@Moleoflands

Жыл бұрын

Not enough memory 30 years ago to do that on every projectile

The shocked Doomguy faces are brilliant. Also this was a really nicely done short analysis video! Can't wait for future ones :D

It'd be cool if one of the future mod compats like MBF22 would allow for tighter hit detection like in GzDoom, to solve little issues like these, and to make melee combat much more fun.

0:34 quickest video ever

@4:06 That wrapping fireball hit is amazing. Congrats on capturing it!

Your meme thumbnails are the best, glad you put them on display at the end of the video

2:08 i have a strange feeling that when you said "its the same as the plasma bolt", that in terms of code it was made (mostly) the same. idk, just a hunch

Game's broken. Time to uninstall.

@n00f

2 жыл бұрын

Get a doom 95 refund

Amazing content as always, and loved that intro lol! Learnt something new too.

This is my first video I ever watched on your channel!

Why do people love this crappy vintage game, where not only player-wall collisions are screwed up (wall-running, elastic collisions, Zero-Master clipping out of bounds) but projectile-wall collisions too?

@decino

2 жыл бұрын

S O U L O U L

@asticlol

2 жыл бұрын

funny unf man shoot gun

@abadenoughdude300

2 жыл бұрын

Because in new games even glitches are boring. 😋

@getaround1276

Жыл бұрын

It's the father of all first person shooters, a fast-paced experience with a near constant influx of new maps and mods for nearly infinite different experiences. It's a classic for a reason. Also have you considered that bugs aren't necessarily a bad thing? Smash melee is one of the most played competitive fighting games and basically every major technique is a bug or exploit.

Another great video. thanks decino.

4:00 And on that day, satan said: *_"Fuck this revenant in particular"_*

I really love your sarcasm and irony used in recent videos. This is what I'm trying to imply in my vids xd

I often assume these videos are going to be boring or confusing, but I’m always wrong. Your visual aides are awesome and this shit is always interesting.

Adore your tutorial videos, keep doing and have a lot of fun.

love your analysis videos. Learned so much about doom from them

Thanks dude, love the analysis videos. Even more info with which to improve my chances. If only my reaction speed was as fast as my recollection.

Great info vid decino. Great work

I can't tell you how many times this would happen to me when I would be playing doom. I needed this information. Thank You!

I just Love this channel

another way to chill by watching analysis videos by decino :))

Always entertaining, and informative

That solves my issue of seeing some projectiles passing through walls, thanks decino.

decino: answers the question precisely and quickly also decino: now allow me to explain how this can happen with every other projectile in the game and give more detail about their speed and size

most educative, thanks decino

I needed this video.

Ooh, I liked this video. A good analysis on -bugs- features.

Cool fact: because doors/lifts are solid areas, and almost always thicker than the gap between tics, they are reliable armor against Mancubi, or anything else on -fast. (Most doors are 8 or 16 thick; you can make them all the way down to 1, or less than 1 I suppose if it's a triangle corner, but who would do that?)

It's funny how projectiles just wrap around the map like they're going around the planet

I haven't played this game in like 20 years, and yet this content is so interesting.

Wow very cool, and a pain in the butt when it happens. Thanks decino

Zap Rowsdower definitely plays Doom. He downs Molson beer, lives in the back of his truck, wears acid-washed jeans, trims his mullet, and plays Doom.

@jellywillreturn

2 жыл бұрын

I am so glad the church of Rowsdower has not died!

that rev missile width reveal, shit no wonder i get snagged by them even when i thought i barely slipped away