GWater2 - Swimming

Swimming code - reused from gwater1, coming in 0.4b (releasing soon).
Map Name: gm_untitled_playground
Thanks for watching!
Download Link (0.3b): / meetric
Download Link (0.3b) for Russians / Ukrainians: boosty.to/meetric
(Before downloading, note that there is no direct Linux support and all Linux users are expected to use Wine/Proton)
(Also note: There is no Apple/Mac support of any kind. Sorry)
Releasing for free on workshop in Q1 2025
discord: / discord

[@1234magazine]

The pirate ship wars dream is slowly coming to fruition.

[@Artanimatorman]

i have the same idea

[@Soipelez]

Back around 2012 - 2014 the "Flood" game mode was really popular, you had a small time window to buy props and make a ship, then would fight to the death. What a great time it was.

[@Hugal.]

@@Soipelez Biggest reason why i can never look at the half life 2 soda machine the same way again, the ammount of times i used the soda machine as a cover was crazy

[@dashdashdash_]

@@Soipelez Pirate Ship Wars, Flood and Sledbuild were my go to

[@javierfito5077]

you can already make pirate ship wars in Gmod, there's a tool to edit buoyancy. you can use wooden breakable parts and when parts gets destroyed the ship loses buoyancy and ends up sinking

[@kmwkmw9160]

It just keeps getting better and better

[@nobody-k6j8x]

This is insane how one person can simulate water physics on a cpu based game better than most modern day games can.

[@nocturne6320]

He's using an old NVidia library that's doing the simulation, the hard work from his side is actually integrating it with GMod. The reason why pretty much no games use this tech is because it's very expensive and the physics isn't 100% stable. GWater is capped at 100k particles and you can see that it isn't enough to even fill up that small area he walled off, sure, you can increase the limit to 1 mil, but only better hardware can handle those values. So if you wanted to use this in an actual game you would be very limited by the scale of the simulation, because either you'd use small, but realistic particle size and be constrained to only using the sim in very small areas, eg. A single pool, or you'd have to blow up the particle size, which would look bad and you'd still only fill up a small pond at best. It's simply not usable for anything cool

[@clownintraining5944]

@@nocturne6320 it's usable for small bodies of water, so if your game takes place in an urban environment, you could have bathtubs filled, or crates, or you could have a small pipe puzzle. you definitely *can* work with this.

[@nocturne6320]

@@clownintraining5944 In short, it's not worth the performance hit. While FleX, the NVidia library GWater uses is not strictly NVidia cards only, it does rely on CUDA (and probably has a different implementation for AMD), which is not available on AMD cards and that could mean that the physics behaves slightly differently, which can be a big deal for gameplay. Another is that physics cannot have a "quality" slider. With graphics, you can add in expensive stuff like raytracing into your game, because if someones hardware cannot run it, they can just disable it with no impact on the gameplay, this is not possible for physics, if some hardware wasn't powerful enough to run the simulation, then the game might not even be playable on that system (especially a bad scenario for console development). And finally the performance. For what small details you can do with this, it's not worth it. Why have a realistic water sim of a duck pond when you could instead use that performance to render at overall higher quality, or fit more stuff on the screen.

[@plinyvicgames]

games used to do this. the only game in recent history i even remember that simulated fluids was borderlands 2, and it was still locked to nvidia GPUs

[@circleinforthecube5170]

@@nocturne6320 yes because fountains and pools aren't awesome

[@alanrodrigues1835]

This is actually insane

[@Nombrenooriginal]

Can you remind me why are we getting excited about watching water?

[@ProfessionalTyper]

@@Nombrenooriginal because it's in a 20 year old engine

[@mschulmeister6519]

@@ProfessionalTyper For me its more about the huge amount of real time water, there are only two others games that come to mind that do this at some capacity and very little... Trine 2 and Worms Revolution, from 2011 and 2012 respectively (Surely there are more, but i personally only know these two) I remember playing these years ago and thinking how cool future games would be, lol poor kid.. if only games had continued to experiment and BEING GOOD :(

[@Visualstuffidlk]

@@Nombrenooriginal Basically somewhat realistic looking real time water in a 20 year old engine

[@lordcaprisunthe2nd]

@@Nombrenooriginalbecause water is cool

[@walteracevedo5105]

Opens new tab Plays "Dire Dire Docks" while swimming

[@zekkriel]

splish splash

[@poptre67]

i was takin a bath

[@christiangrey3645]

@@poptre67 long about a Saturday night

[@Commando64]

@@christiangrey3645Yeah, A rub dub, just relaxing in the tub

[@pootisbirb7584]

@@poptre67 and noticed i have beutifull balls

[@Insanabiliter_In_Linea]

It's really coming along, seeing far how it's come from GWater 1 to GWater 2 has been really cool, "night and day" doesn't even come close to describing it.

[@mattquenton]

A few years ago I saw a discord mod in the Fun With Ragdolls discord say that real time fluid simulation would be impossible. This is incredible.

[@cluna25]

Did anyone noticed Mee playing everytime on different versions of gm_construct every new video

[@olegmoki]

guys there's something wrong with my gm_construct level

[@ch1ppychipp]

@@olegmoki the great flood

[@HYPE7799]

you did it now just sound and a more cooler looking underwater effect and thats it

[@Solutra]

i don't think he's using an underwater effect - it's just the water itself being in front of the camera.

[@Space-Shuttle-Scam]

for a 2004 engine, this is crazy good.

[@JayTheComputerGuy]

Physx development was started in 2004 and was first implemented in a game in 2005! Still very impressive implementation!

[@dopadream]

@@JayTheComputerGuy I do not know a single game that used PhysX that had dynamic fluid simulation like this. I also do not remember it performing well, at all (like on Mirror's Edge for example)

[@Space-Shuttle-Scam]

Thank you for the heart MEE!!!!

[@lordcaprisunthe2nd]

@@JayTheComputerGuythis is much better than any other physx implementations in any game

[@dill13]

Sound effects will absolutely sell this effect so well.

[@ujmeadelostherliver]

This is honestly so damn impressive you are skilled af mee, i have some coder friends would totally be jealous of your talent, i know i am

[@R_Williams_Gaming]

02:32 The dam BREAKS

[@brettzolstick989]

Me 3 hours after taco bell

[@Redsword603]

Holy heck! words cannot believe how revolutionary this is gonna be for Gmod and especially being used for modes that have this stuff. You're basically pushing the source engine to it's limit by doing something like.

[@thesuperstratos]

Wow, just wow.

[@StiekemeHenk]

Okay, we need some voiceover of this. There's no way you didn't have a TON of issues while getting this to work.

[@pennyjim5671]

The description does say it was reused from gwater1. So while I don't doubt there were some _fun_ bugs to fix, I'm sure it wasn't that hard. Still not *easy*, just not that hard.

[@Gaood.]

No shit Sherlock

[@StiekemeHenk]

@@Gaood. I literally shit every day Sherlock

[@Meetric1]

it was actually pretty easy since it was mostly just reused code. The hardest part was getting the server Lua instance from the client (to avoid networking / exploitation unlike gwater1), which did take a bit

[@StiekemeHenk]

@@Meetric1 I'm a software development student (apps/sites/servers) so client/server problems on this level aren't something I deal with often. I'd love to hear more about it! Might not be for the audience that normally watches your videos but if you'd like to share some more technical stuff, it's your channel🙏 I'll enjoy it during my morning coffee ☕

[@Z0Noob]

Glad to see some sort of release time frame for the mod! I recently just bought it and It's been a lot of fun to mess around with. Really glad I was also able to support you even if it was just $10!

[@AMysticalGrape]

I got gwater 2 today and it is absolutely amazing. Keep up the great work

[@JokaPlayz]

I WAITED FOR IT SO LONG!!! Now it's just a matter of adding screen overlay efect underwater.

[@SpadesNeil]

This _silly GMOD video_ is showcasing a technology that might genuinely be a revolution in gaming. We are seeing history being made here.

[@North563]

Your work is amazing! This is awesome!

[@lunarlight69]

mee this is absolutely insane, i cannot wait for what else you will add

[@elliot9634]

crazy how much progress has been made on this ur single handedly changing the liminal pool game 😂

[@oisinbroadcast6916]

this mod just gets better and better. bravo!

[@Hervoo]

amazing work! now only to wait to add water effect when walking or doing something underwater

[@dimddr_man]

I remembered the level in the first half life, where the water begins to fill the tunnel...

[@Stanley_stanley]

We need sounds next but HOW DID YOU DO THIS??

[@johnmm.]

he reused gwater 1 swimming, if swimming youre talking about

[@Seek9750]

Yes, sounds are needed

[@Seek9750]

@@johnmm.no

[@Personan642]

@@Seek9750he reused code not all of it he made a comment in the other comment let me see the comment name

[@Personan642]

@@Seek9750alright its the one where they say they need a voice over of this

[@jackman6625]

I cant wait for this to release for free eventually, this is actually going to be super cool.

[@weekal5515]

I swear valve has given this man a job offer

[@Feemdog.]

amazing work

[@grubasekpl9254]

The day has come, where water is actually water, btw can headcrabs survive or will they die like touching normal water

[@Meetric1]

headcrabs die in water? huh. didnt know that

[@DaizyYT527]

Thanks meetric for my idea! OOOHHH I'M SOOO WANNA TEST 0.4BBBBB

[@imsatoboi]

Bro got a whole ass fluid sim with over 100 fps , i dont think i have ever seen that in any game , PERIOD

[@bulgogi6206]

actually amazing :D

[@stanleybochenek1862]

1:18 also this gave me a idea for a setting that acts like a little event or something that counts down to a tsunami and spawns like a chunk of water near the player in a way idk it’d be kinda cool edit: or like a flood it would spawn water particles in a area that it would detect that it could fill up a room or something

[@JNJNRobin1337]

make the water swarm players and drown them like a hivemind

[@Davuksss]

YES YOU ADDED IT

[@luigiman0640]

Can't wait for "gm_construct but it has physics water"

[@declanandollie2981]

Great job!

[@Wheagg]

At this point I'm convinced he can superimpose anything into this game

[@Cherrie_The_Shifter]

Amazing also please make ot work with your portal mod

[@gitarkatili]

Could there be a thing as varying particles? For example, when you open the gate to let the water flow out, we can see at first that there is a big portion of water and it slowly becomes shallower as it flows. But you made the particle volume bigger (so it fills more area), but at the moment it prevents water in small portions seem unrealistic. The idea is that, I don't know if it's possible and I am sure you already tought about that, to check the portions of water and determine particle volume/particle size depending on the total area water takes. So if you fill a pool, the particles will be bigger because we only see the body surface. But when somebody jumps into the water or throws an object, it detects the impact and watches the actions of the object and makes particles in those areas smaller so we see the impact, water details, foams, etc.. And the other parts of the pool stay same. Again, I don't know anything about the mechanics of this so sorry if I am being rude or anything. Keep up the great work as always!

[@Meetric1]

nah you good. unfortunately due to how octree acceleration structures work, all particles need to have the same radius

[@IssacNation-hx8mt]

Bruh how can you get better than this? This is the ultimate water mod for Garry’s mod

[@Freef_01]

TTT Pool Day is about to be on a whole nother level

[@knonas2552]

Imagine if a map used this new water for a sinking ship map

[@monkey_doodle]

ok now all you need to do is make the water flow out of your screen

[@halimahzamanwali2503]

I'm really excited for this addon to be released in 2025, Mee is the goat 😎

[@sloppy_slime]

I can't wait for you to finish your degree and work on stuff, you will be revolutionnary

[@ContoniaCosmo]

weve gone so far we even surpassed the gmod blender simulations

[@bounceysteve]

something really cool is if you could bake in water so it would act like map logic

[@notsokodya]

oh hey, my swimming code is finally got used in gwater 2 :D

[@Meetric1]

🙏

[@blitz_sig9cz]

You should totally make a tool to make surfaces of maps permeable so the water slowly seeps away if you want

[@CatMisa-de7hq]

Imagine underwater hear sounds of water

[@KAPANDI-v9d]

damn thank u so much

[@blePLOL]

if you make the water sticky, you can swim in the air once its stuck to your body. fun glitch!

[@floppik14]

WOW that's great what a cool author you are

[@dylan85guy]

Ladies and gentlemen, the long awaited feature of swimming in a water, has finally came out. It's been an honour to wait it all with you

[@Egorsfilms]

this is very cool!

[@TheAmazingHerosquad]

I can't wait for this to end up being an arg where at the end everyone who's downloaded the mod has their consciousness implanted into their copy of gmod

[@Alexxalla]

I didn't think this could get any better then GWater1 but I was very wrong. God Damn.

[@juanelgamer4569]

just imagine showing this to garry back when he was making his mod and tell him that it would evolve into it's own game where someone achieved this or even show it to half life 2 devs with that said, i wonder what kind of pc is needed to run the mod smoothly, or is it already optimized enough?

[@DonnaPinciot]

Hmm. Seeing that water in the map, I wonder if you could do some interaction with it? Maybe spawn GWater when something splashes in to map water, and despawn GWater particles if they come in to contact with map water? It would be pretty cool if addons could somehow interact with the liquid. I'm not sure if you got multiple types working at once, but I could imagine a Spacebuild-like thing with liquid stored virtually in tanks, but being able to pump it out and having it spawn from leaks, needing to suck it up and stuff? That could be interesting, but there's no networking with the flex side of things, is there?

[@Meetric1]

detecting collision is hard. there is a lot of syncing gpu and cpu data around which can take a really long time (when considering playable framerates). With FleX, its *much* easier to treat it as part of the map geometry I don't imagine this mod being used for anything practical, since it requires a binary module, is fully clientside, and very performance heavy. But I suppose it would be interesting to incorporate it into something. We'll see I suppose

[@DonnaPinciot]

@@Meetric1 Does FleX not have different collision types, like voids? Are you able to assign different collision types to different map geometry? Being client-side does make actual functional multiplayer aspects infeasible, but it would still be cool as optional visual flair. I could imagine a mod like I described using ordinary particles in most cases, but if it detects GWater, using fluid instead. Oh, on that note, can the particles have a lifetime at all? Or would it have to be tracked manually per fluid drop? For auto-cleanup of these visual spills.

[@Meetric1]

1. FleX does support different collision types, but you have to implement them yourself, and getting the data from the GPU nearly halves framerate 2. Functional multiplayer isnt actually that terrible now that im able to sync the client and server lua instances via C++. Swimming and reaction forces use this at the moment, and in theory you could do stuff like "kill player" or "ignite player" 3. I'm thinking of doing a lifetime thing eventually, we'll have to see ig

[@xXCrypticmorphxX]

I actually commented for this thanks for making my wish come true

[@BasicDerps]

You should totally add sounds next

[@jit-o7e]

Flood 2 is going to be goated

[@Alfaz4135]

Yooo does gwater 2 will soon have an swimming feature like gwater 1

[@tixeXYZ]

Are you planning to implement dynamic particle scaling, so if a particle is stationary it becomes big and merges with others and if a particle is moving fast it splits into small particles

[@Meetric1]

an individual particles radius cannot be changed

[@tixeXYZ]

@@Meetric1oh, also will this one work on Linux so I don’t have to play Gmod in a vm?

[@Meetric1]

I've tried compiling for linux, so far with no success. right now, the issue is that the Nvidia FleX (particle engine im using) libraries are having problems linking to the compiled object. unfortunately I'm not sure why, as they *should be* linked via a premake script I'll keep trying. Worst case, it will be open source during release and someone with more experience may be able to get it to compile

[@tixeXYZ]

@@Meetric1ok, from what I’ve heard everything is packaged in the addon so I should be able to use a cloud gaming service right?

[@Meetric1]

possibly, yes

[@pulledpotter]

will you ever add sound effects to the water as you did for gwater v1?

[@Meetric1]

sometime I will try my best to add convincing sound effects

[@stickman9185]

now you can swim in the "conversion gel"

[@alecboi777]

you’re gonna get moon-rock poisoning

[@DistortedDebaser]

Finally piss physics

[@katanimations634]

HE ADDED IT WE ARE GAMING

[@Skeke]

Since GWater1, I wanted to see gm_construct's lake filled with GWater instead of regular source engine water

[@dogvogg620]

i cant wait for 0.4b !

[@crristox]

What about water particles that the closer you are to them the smaller they get, and the further away they are the bigger. Like LOD to prevent seeing large blobs of water up close. I guess this wouldn't work in multiplayer.

[@GordoUriarte]

alright ive commented on this video before but this is important someone literally posted the entire gwater2 onto the steam workshop and its still up

[@Meetric1]

if its on the workshop, I guarantee it doesn't work, as binary modules and shaders cannot be uploaded. its a workshop restriction

[@Dog-with-Insomnia]

ITS HERE, HE'S DONE IT

[@NicolaiSeven]

now we can made your own bathroom in a map size xd

[@ectono]

you should make it so gwater2 could be used in adventure maps. for example the room fills will lava that damages you very quickly on contact.

[@Kreskowy]

i have an idea for optimization, what if you make a particle bigger if its connected with more so it gets glued and make smaller particles and more particles when theres more movement or smth like that, does that make sense?

[@Meetric1]

an individual particles radius cannot be changed

[@Kreskowy]

@@Meetric1 ) :

[@stanleybochenek1862]

yay now i can finally swim

[@sanchez-015]

looking good

[@baging1]

im curious if you could make it so the particles are by default big because in large bodies of water it looks good that way, but when you interact with the water the water particles become smaller

[@Meetric1]

the physical radius of an individual water particle cant be changed, though visually they do shrink about 50% in size when not in contact with other particles

[@brimmla]

now all we need is underwater affects and drowning!

[@Cadbot123]

I can tell this is gonna get insanely glitchy Keep up the good work!!!

[@sdgx0]

someone needs to 3D model a swimming pool so i can fill it up with Funnywater2 and mess around with it lol

[@callisvitor]

I still have no idea why valve hasn’t hired him yet. This dude is lil a Source engine wizard!

[@flouserschird]

Probably because they don’t make games anymore *cough cough*

[@wawanator02]

i can finally take baths ingame instead of irl 😄

[@MarsBars-k6z]

How about an underwater effect next? maybe boat riding?

[@gavart4509]

This man has too much power, he must be stopped. We need to enact martial law.

[@BamFourThousand]

Add a toggle so you can turn it being swimmable on and off. It'll be useful

[@Faolan-ot9re]

you should add water sounds

[@TheOneYouNeverKnew4Ever]

Literally fully complete GWater1 but better. I can't wait for the release!

[@Meetric1]

Almost. Still need cloth, drains, and black holes

[@Dwolfin]

BEHOLD THE SWIMMING UPDATE IN PREPARATION FOR THE WAVES UPDATE!

[@ch1ppychipp]

This will be Source graphics in 2016.

[@thenooticer7392]

NSFW models bout to swim in white liquid 💀

[@danielguimera12]

nooo :(

[@tedwink6652]

lil question, how difficult it will be to implement something similar to how model LOD's works but with water, distant water will be rendered by bigger blobs and spheres, while closer ones by smaller particles?

[@Meetric1]

in this case, its faster to just render the particles via an existing buffer instead of calculating LODs

[@bentley412litre]

Nice! Could you possibly do a demonstration of gwater 2 in some form of destructable structer, maybe a watertower?

[@Meetric1]

perhaps in a later video

[@ReachTea]

Can you export at 4K? Even if you record in 1080, KZbin destroys the video

[@Amogersuser]

YES!!!! This mod is perfect now

[@cheeseaxe]

yeah, that water sure does G