GWater2 - Reaction Forces are back!

[@HagalazI]

Can you not just assume equal and opposite if you know the force exerted on the water or am I misunderstanding the problem?

[@Meetric1]

ohh yeah I explained that weirdly. Basically, I only have the movement of the prop that gets exerted on the particle, meaning if the prop is standing still when the particle hits it, I get no data.

[@HagalazI]

@@Meetric1 Ahh gotcha. Just add brownian motion to resolve this :^) Computer might catch fire. As it stands its really cool even with the limitations.

[@R_Williams_Gaming]

02:54 that looks INCREDIBLE

[@cndvdxyhjblbilg]

I feel like they kinda look like sparks and not really foam

[@Daenthio]

@@cndvdxyhjblbilg youtube compression, as he said, makes it look worse compared to how it actually looks.

[@TheHotDogGamer1]

still looks good though

[@Cherrie_The_Shifter]

Iktlr

[@jackthehacker05]

20fps with that many particles is still such a massive achievement. Some new engines struggle with a lot less and you’re on gmod of all things

[@Meetric1]

It's nearly half the normal fps so its probably worth figuring out the bottlenecks associated with it

[@nightxday]

god, water is so funny

[@-into-the-void-]

so FUCKING funny it makes me wanna merge without looking

[@ВалепЙикстуер]

This water isn’t real

[@EngiesParadise]

Troll physics 101

[@TinyDeskEngineer]

So that's what the G in GWater stands for. Not "Garry's Mod"

[@SnrubSource]

3:03 the way the water makes the tower fall over, you can see all the foam/bubbles spraying down, and then the broken planks are pushed by the current on the ground makes this feel like some amazing physics tech demo you'd see at an early 2000s E3, god I wish more games took physics seriously

[@TrekDelta]

Everywhere.

[@m-oe1of]

so THATS what the funny liquid was

[@mr.foogle3004]

I love that you haven't stopped at "good enough". It's not just a novelty like most mods similar to this would be, it's a fully functional water system that looks so stinkin' good. I love your work man, and I love that you're not going radio silent either. I hope you have a good day today

[@TRUFANATIC]

Gwater 3 will be more real than real life water

[@ches2839]

welcome back sethbling here

[@sourkefir]

Sethbling returned by the way, keeps amazing me

[@Alexature]

this is genuinely the most impressive thing i have ever seen in most engines, unbelievably great work!!

[@Sxkielecior]

4:52 The funni liquid recepie... 😈

[@whothoughthandleswereagoodidea]

I can tell you're excited about the changes here. I wanted to let you know that this update really G's my Water, too.

[@arthigo157]

the way this mod evolves so quickly is incredible

[@RushFreak]

Water pushing a prop forward in a feedback loop? Propsurfing in the most literal sense possible.

[@MaxTeky]

Loved your animations back in the day :D

[@warden6908]

I wonder if you could code something that automatically turns gmod props hitboxes into nvidia flex hitboxes. If the nvidia flex particles can interact with gmod vertices and knows the hitboxes, could you take gmod verticies and code something to turn them into nvidia flex objects? I suck at explaining and have no idea how to code.

[@roblogez]

why

[@Chicky_Lumps]

Basically make each object have a counterpart particle used to determine forces on the object?

[@spartv1537]

​@@roblogezso physics calculation done in gpu not cpu

[@Meetric1]

I was thinking that was the best way to go about it. I'll play around with it

[@warden6908]

@@Meetric1 You got this, If it works then you could make some crazy scenes. A cool way to showcase this would be a dam breaking from pressure destroying a small town.

[@darklight6566]

Alexadnrovich here: Make a X-Y vector force/gravity variable depending on the amount of particles colliding together, or just a proximity vector

[@caprisunconnoisseur1321]

garry should hire this guy

[@modusmogu]

2:53 "Thats pretty believable"?? No that's insanely believable!! Honestly one of the BEST water I've seen in any game and way cooler than fluid sim in blender; blender takes long to render, is restrained to a bounding box and is very ram/vram expensive. Your fluid sim runs in real time... And in fucking GMOD??? Wtf!! This is some next level shit, wow

[@Sagetower7]

These development updates are awesome, thank you for continuing the project.

[@cancer5895]

these dev commentaries are getting crazier and crazier

[@britishheadcrab5640]

reaction forces will be one of the best things to come to gwater

[@lizardy2867]

Maybe I'm misunderstanding, but is there really no static info, such as positions of particles? You effectively described a system which only provides reaction info, which would certainly be a problem. If there truly is no other information besides prop->particle collisions, you could still hack together a simulation which stores the information for your own pressure forces. You'd basically be assigning particles to props, assuming some constant forces, and communicating to a pressure system which dishes out forces based on that info. Granted, this is all assuming you have some way to know when the last time was when a particle interacted with or was in proximity to a prop that is stationary, in order to save it for later.

[@Meetric1]

assuming constant forces is the last thing I want to do

[@Spoon1-x7u]

Amazing 02:54 you should take a break some times! anyways Keep going!

[@Solutra]

"you should take a break" "keep going"

[@RAFA120HOJAZ]

​@@SolutraTrue

[@superr6films482]

valve hire this man

[@ArsyF]

This is more of sorcery than development

[@stanleybochenek1862]

it kinda is softbody like or jelly like that’s awesome!

[@JudlexAlternate]

Oh my god ambatukam!!!

[@averageartist10]

valve *NEEDS* to hire this man

[@raccoon_thats_very_chill]

Don't worry with the bugs too much, we aren't forcing you on doing work on GWater2. The results with the wooden tower were pretty nice! Maybe if you can't fix all the bugs by 0.4, maybe just have it in its most simple form without bugs (If you can).

[@Jollyboy_]

You are the best gmod creator ever

[@GreySlasher63]

amazes me that after 20 something years people are still tinkering with the source engine and revolutionizing game physics despite how old the engine is

[@Lunarcreeper]

Once this is finished, it would be so cool if this was turned into the portal 2 gels and paints the floor as it slides across.

[@indecheeso]

what i'm understanding is that every particle has a reaction force on a prop, so like what if 1 in every 8 or 16 particles have a reaction force so that there's more fps

[@RAFA120HOJAZ]

This is what interests me

[@Wheagg]

The fact that any of this is possible within GMod is insane

[@redeyesilverfox7859]

Hi mee i wanted to try you're mod by subscribing from the workshop but i noticed that another person has uploaded it on the workshop page by a guy named ORION seemed sketchy since it was not uploaded by you and the comments were off should i trust this addon? (And yes i did check the disruption on this video i just went to the workshop first)

[@Meetric1]

I would advise against downloading it since it's not from me. i wouldnt want you to get malware or anything odd

[@redeyesilverfox7859]

@@Meetric1 thank you very much its better to be safe than sorry

[@commentaccount7880]

can you create pressure from a calculation based on how much water is above each other? that would also make the bottom pieces heavier and kinda push the wall open from the bottom making it look watery

[@Meetric1]

sounds expensive

[@GeekyGami]

The feedback on the adhesion could be controlled via a delay in the "feedback loop". This would dampen the effect of that "feedback loop" over time. I.E. just like how you dampen the sound of a delay over time in audio processing by controlling the feedback amount. Here you're kind of going backwards and implementing delay on top of the feedback so you can then control the feedback amount by delay. This could potentially also be implemented into the reaction forces loop so that you can use that "delay" as a buffer time to get information you can use to resolve the other issue. This may also mean that you can lower the amount of things that need to be done on update to instead work through a tick rate that matches the delay time.

[@Meetric1]

possibly, but its a ridiculous amount of information to copy (little over 50 mb per frame)

[@GeekyGami]

@@Meetric1 Is there some presumptions that could be made to re-use that information, so that you can essentially reduce it to 50 MB per tick instead, and increase the timelength between ticks? Say, no new particles have been made. You only have the existing particles. Could you take that 50MB, get pointers out of it that you could then modify, instead of copying the whole thing per-frame? Interpolation perhaps?

[@Meetric1]

regardless I don't think this is a viable solution to the current problem

[@PrinterPaper255]

Realistic water physics in a 20 year old engine before gta 6?

[@yourlocalhuman-o4l]

It looks like it was made in blender, thats how good it is!

[@mØØse_25]

BRO I CANT WAIT FOR THIS TO BE ON THE WORKSHOP ‼️‼️‼️

[@YellowHashRinger]

It's not still

[@mØØse_25]

@@YellowHashRinger I KNOW BRUH 🔥🔥🔥🔥‼️‼️‼️‼️

[@Slash11512]

Rest in peace funny liquid 😞

[@joaquimbonazza6686]

the water looks like jello, makes me hungry

[@cloudtender8813]

this guy removed the source engines limits

[@spartv1537]

gmod survive the tsunami gaming

[@csa5697]

when stuff like boats can float on that, whirlpools will be possible! and tsunamis, easy wave simulations

[@monkey_doodle]

when will swimming be added?

[@monstamack]

by the time gwater 2 is out i will be in a wheelchair dude

[@Preinstallable]

For cases like the metal wall container, couldn't you, every once in a while, check when a non-negligible mass of water exists, and calculate the pressure and apply it to the props in the immediate vicinity of the mass of water? That way, the walls will "burst out" from the bottom like expected with water

[@AndroChimera]

🤔🤔🤔 interesting, a lot of room to make it better. good luck budy you've been impressive so far, keep doing it.

[@sourkefir]

Now it's only a matter of time before gwater exceeds blender fluid sim

[@pigeondriver8992]

That's crazy!

[@zarowstudio7631]

hey i have a suggestion can you make explosion impact for the water as the part of 0.4 update?

[@Meetric1]

we'll see

[@zarowstudio7631]

@@Meetric1 hey also im not on the patreon list unless its only for those who helped with the addon idk (just put patrick zarow)

[@farseltayeb4183]

I have a question, is it possible to have smoke & dust particles in GWater2?

[@Meetric1]

probably

[@purplelizard0102]

this is absolutely amazing

[@mokow3732]

Hmm would there be a way to basically evey now and then check if something is coliding with a particle? Like the part where you unfroze the blast door, it didn't move, but then added more water, and then it pushed the objet. Like it would be fucky but let's say there is an update to all particles once you use your gravgun to freeze or unfreeze objets?

[@Zylenxx]

with water adhesion couldnt you make the affected prop tell the water it wouldnt move at all and act like part of the prop, ommitting some of the forces the particles does after first contact? could be a bandaid patch but not sure if this would break the model when you dip a prop into water

[@bingus_sleepies]

this will revolusingnize water physics for gmod, imaging being able to replace the water in construct?

[@MCSteve_]

Im sure there is some way to conserve the third law of motion... I can see how it can be so janky with the limited info Not sure if it can be implemented with flex but are you using any form of spacial partitioning to limit iteration for the reaction forces? Does not have to be anything fancy, it can be a fixed grid. Pressure is literally just symptom of kinetic energy... I wonder if putting a little bit of jiggle can at least have something happening (so it it is nonzero along boundaries)... just the worry it'd make everything unstable. So maybe jiggle under certain scenarios (if that can be managed)? I hope the energy can be modeled at least in some helpful way. Tough Funny how good the reacting forces do look tho considering what it is

[@Meetric1]

The way the data is given isn't something I have control over

[@DaizyYT527]

Its my idea thanks meetric, im your big fan.

[@Ezdine_G8261]

you8 came up with the entire thing, and you are THE big fan. there is no other

[@isuck0666]

Color to white Viscosity to max 😈

[@Minencraftin]

👍

[@alekzomer]

Yoooo my dinosaur pc is gonna enjoy this

[@DarthMendorian]

Imagine if Rockstar Games delayed GTA 6 for about 2 years and what they give us instead is Mee's water engine

[@cinfdef]

Do you perhaps have Evaporation in mind? It would be cool to see small, lone particles vanish after some time as a hidden way to clean up memory

[@gay_madilynn]

you kinda sound like you're gonna end your videos with "That's about it, thanks for watching." followed by kevin macleod's "cipher" (that is to say, you vaguely sound like sethbling)

[@William_E]

Nearing the end you said the water pushed, then sticks to a surface that propelled it. You could add some code that diminish force over time, so it wouldn't endlessly push

[@Meetric1]

Tried that. It ends up making falling objects super dampened

[@samuels1123]

if you can get a list of forces applied to the particle you could do a *cpu incinerating* trace *every iteration* along *every force vector* for *every particle* *every iteration* to check for *every source entity* though if the information issue could be circumvented, could isolate forces on particles originating from entities and apply offset force to relevant entity/bone

[@Meetric1]

sounds expensive

[@terraria_pog2355]

it looks so good compared to what i saw about a year or two ago which was already very impressive

[@Mystery_Mug]

hey I know this isn’t really related but I have a question about invmap, I have seen many huge obj maps but no like actual very good ones? Is it possible to have doors, lighting, interactive stuff, etc outside source boundaries using infmap?

[@Thetitaniumsteppermotor]

Hmm... im planning to get gwater 2. I can see if i could give a idea how to fix the not it being able to push objects when at rest

[@Dex_J12789]

ADD SOUNDS TO DA WATER

[@goofycreature]

what if you made a tool or something to make props into water? and perhaps a freeze tool thpugh i think thats exists. also maybe some options to like for example hurt players and npcs. just some neat ideas

[@s_callahan]

LETS GOOOO

[@СтасікБехтер]

now you don't need a blenler, take it and make an animation with a complex 3D model xstalog

[@GabriellSimic]

wake up babe new mee video just dropped

[@sloppyvods]

the sad thing is that you can't do a "pressure check" without having to do it on every single particle, maybe if you found a way to represent a body of water as a single "entity" or grouping them in some way you could use the number of particles in the group as a pressure variable

[@oriolsu]

I have a suggestion: the dynamic water waves effect could be added to the gwater2 addon.😇

[@stanleybochenek1862]

nice work!

[@saplemyrup]

Brilliant.

[@makima]

waiting on the tsunami update

[@badusername9903]

how about a big container of water slowly scooting along the ground, would that work?

[@Teodor863]

to get rid of the water you could add that the water enters the ground

[@Cherrie_The_Shifter]

This is freaking amazing, i loved the first mod and like this even more, all you're addons and mods are amazing thsi one betterz also please add support with yout portal mod and all others thank you:3, GG

[@Cherrie_The_Shifter]

Very epic water

[@Cherrie_The_Shifter]

Nice mod

[@csa5697]

oh btw, are you gonna add water pressure?

[@Meetric1]

in the video I say I'm not directly given that information

[@olegmoki]

Great

[@Xeogin]

Question: If it's going to kill the frame/tick rate if it's constantly running, yet also have the flaws it has, could the checks the particles are doing be switched back and forth? So like, for a 66 tick server, 33 ticks it does this check and forces, then 33 ticks later it does the check, but runs that back though the last number and if reduced, applies a back force? Also, are you using the Froude number to scale the simulation? Just thinking you could get away with slowing it down/check less based on the particle scale anyway?

[@Meetric1]

not sure, I'll play around with it

[@dynamitestalker4219]

When sounds?

[@Tallzom]

Thats either going to be simple noises or insane levels of effort just to make it sound ok. Dont ask it’s probably too complicated

[@dynamitestalker4219]

@@Tallzom I'd take some default hl2 water sound to play on loop. It irks me that there's no sound.

[@wintube360]

he would have to account for different liquid settings like viscosity and and cohesion

[@vivious_]

@@Tallzom he said he was thinking of adding them

[@dynamitestalker4219]

@@wintube360 just add stock goo sounds on loop for viscosity higher than a value. Problem solved

[@Goldfish_Vender]

It would be REALLY jank, but when water settles (because it would only realistically work with settled or pooled water), what if you create a bounding box around the water which would allow buoyant props to float?

[@Meetric1]

hm.. sounds abit too jank

[@sillypinkmoth]

swagg :3

[@e1218EEEd]

imagine this being used as water for gmod 2

[@SilverDashies]

I read in description this mod will release in workshop does subscribing will be enough or we gonna have to install some third party stuff ?

[@Meetric1]

yes, It will require an external download since GLua doesn't let me add custom shaders

[@Andy_animations]

Just realized he still has the ole gwater addon on the top right

[@alacai]

How would water react inside of moving objects like spaceships, ect.?

[@Meetric1]

feedback loop probably

[@cndvdxyhjblbilg]

Can you make the foam not look like sparks if that’s possible

[@maxwellpetermen620]

Hey I saw some stuff on the workshop some addons just titled "Gwater 2" Idk if they are real and i don't want to test because I'm a wuss and scared of viruses. Did you know about this?

[@Meetric1]

I would advise against downloading it since it's not from me. i wouldnt want you to get malware or anything odd

[@maxwellpetermen620]

@@Meetric1 Yeah i wont But if you can you can try to get it taken down

[@tanoluciano]

Make skibidi toilet, joke. Cool mod btw, i will 100% sure that i will purchase it on next month bcuz this mod is very interesting and i love physics

[@Hellisfear]

Is there really no way for you to create more output from the water particles so you can use it to calculate things? Is this just a limitation of the system you're using, I'm assuming lua scripts?

[@erdbeerkotze5795]

I havent watched any of the videos by you so i dont know if my questions have already been answered but here are my questions. 1: will gwater2 work in multiplayer and 2: will you be able to swim in the water?

[@Meetric1]

yes to both

[@erdbeerkotze5795]

@@Meetric1 Awesome! I'm really excited for this mod. It's crazy to me how this old ass engine can do this. Keep up the good work!

[@-betagames-]

Can be nice if the mod have little structures like wood water tanks to show the cool things you can do with it