Water Systems Deeper Dive - Building Worlds In Unreal - Episode 28

[@MyChannel-l4w]

Awesome, now I can have a metahuman floating and making ripples :)

[@barrydineen8845]

I was really struggling to get the buoyancy and the fluid sim to work together. Such a simple and effective solution. Thank you!

[@kevinpage]

Thanks so much for these tutorials! FYI: at 8:20 you were trying to move the pontoons up, but you accidentally moved them down. That's why the log still rolled a lot. Solved with increased weight, but just something I noticed. Thanks again!

[@BenCloward]

Yep, good catch!

[@antoineflynn]

Merci Ben! Salutations du Québec!

[@Kafkin123]

Heya. Small note as I went through integrating the rpple solver / fluid sim to what I'm working on right now. The material that was setup on the Force Mesh, much like the Fluid Sim material you pointed out in the previous video - is actually somewhat broken. The sphere mesh visualization material - M_ForceDisplay has a material function reference that is broken as it points to a content folder "FortWater" that doesnot exist with Unreal or the plugin. Removing this should make the material transparent (and adding in a z-feather function, which is likely what the function was originally trying to do would allow for easier visualization of where the mesh intersects with the fluid plane).

[@BenCloward]

I noticed that error as well. Thanks for explaining how to fix it!

[@Kafkin123]

@@BenCloward No worries - it's just something that I caught and noticed when watching your videos. Definitely minor - but since you're going through and making such thorough videos (which is awesome), I figured I'd put in a note for anybody following along.

[@HB-wk6zj]

yeaaah ben is back!!

[@naixelnxl2640]

Thanks you so much

[@1d33f1x3]

Awesome, thanks! I got it kinda half working in my game - objects that I place in the level seem to work correct, but new objects that get spawned in don't seem to work. Not sure if it's something I'm doing or if it's still buggy...

[@hastyshahi9141]

So great

[@elhalconlibertario2784]

The Foam!!!??? :(((( I was waiting all week! I trusted u could do the miracle nobody could till now! Great tutorial anyways! Thanx!

[@BenCloward]

I'm sorry. I wasn't able to figure it out. I did find a thread in the forums where someone had made it work, but they had to recompile the water plugin to do it, and that wasn't something I wanted to ask my viewers to do. I think we're just going to have to wait for Epic to fix it, unfortunately.

[@elhalconlibertario2784]

@@BenCloward No need to be Sorry! UR the best Sir! I know its very difficult! I did the recompiling and has foam, but then, no fluidsim, so I went back, and yes, its kind of messy to do it and not worth it! So, still waiting! Big Thanx! Actually I managed to make a drivable ship that leaves wriples behind! Waiting for the next video!

[@aleksandrrush4076]

I've just put tha 100 like!

[@MustafaBerkeGureltol]

Nice video

[@pubudu781]

Hi Ben, Good stuff as always, btw a small suggestion, if it's possible, can you do a series of videos about pivot wind animations for foliage? I saw some new addons for many 3D software for this recently.

[@Albert-III]

The rain system you described for next week sounds awesome! Will we need to go back to the video you mentioned you did a long time ago?

[@BenCloward]

Yes, I'm going to recap it a little bit, but if you want to review in the mean time, here's the play list: kzbin.info/aero/PL78XDi0TS4lHpIHseomZCPRm_NkyUMkPs

[@MrVisualDesine]

Just a few questions regarding the river. I have noticed that there is an option to not deform landscape in settings. But when this is unticked the water disappears. Also can you create a tutorial on how to add foam to the river please as i have been trying for days and haven't got a clue. Problem is there is not one full tutorial on how to use and setup the river in ue5. The foam in rivet with collision of rocks would be a great tutorial. Thanks and hope to see soon.

[@0805slawek]

Ben can you make tutorial about caustc this water system?

[@郑子涵-k1h]

Hi Ben ,Thank you so much for updating such a good tutorial all the time. Now, when will volume cloud be taught? Recently, I'm hard to study RayMarching and finish cloud rendering in UE4.

[@seansopata5121]

With 4.26, volumetric clouds are available. Just drag and drop.

[@Fabio-zc7bs]

Could this work to make a character generate ripples when he is passing by the water?

[@RobertOoghe]

Have you had success assigning fluidsim ripples to the ThirdPersonCharacter so that stepping in the water is interactive? I assume you'd base that on the BP_Dynamic_Force_SkelMesh... but since you haven't done that makes me wonder if, like the foam, it doesn't work?

[@WHITERATPRIME1234567]

I've been trying to get this to work on the player character, but cannot get it to work at all. If you're up for the challenge, I would love to see your approach!

[@unrealdevop]

Ben: Hey everything worked great in the editor, but when I launch this in standalone it all looks different. The only thing creating ripples in standalone is the character walking in place and his ripples ignores the height setting we use which causes the ripples to flow down stream...there all just moving outward in a circle around him. Any idea on what is causing this and how to fix it?

[@VIONICK08]

i made all stuff work but in standalone mode or packaged game ripples don't show up

[@BenCloward]

The water solution is brand new and still quite fragile and buggy, so it doesn't surprise me that it has some issues like this. Unfortunately, debugging issues in the packaged game isn't my area of expertise - so I'm afraid I won't be much help.

[@VIONICK08]

@@BenCloward that's sad, but thank you for answer

[@WszelkieBro]

Why do not change sphere to cylinder in the shape and dimensions of log?

[@BenCloward]

I tried that and it didn't seem to work. If you can make it work, please let me know!

[@Kafkin123]

The mesh is merely for visualizing. You need to change the material assigned to the force component, as it's a procedurally generated ring in the material that writes to the ripple solver RT - Material'/Water/FluidSimulation/Materials/Forces/M_Fluid_Sim_Force_Component.M_Fluid_Sim_Force_Component' is what you would want to adjust

[@AFSdljga]

Hey Ben, what is the approach to doing this for static objects? I'm trying to get things like rocks to impede water flow. I tried the dynamic force BP but when substituting the mesh for a rock mesh it did not work anymore as the sphere had. Additionally do you have any insight on creating the foam effects as seen in the Unreal Preview here? kzbin.info/www/bejne/jnnYmHeOrZuWa8U

[@shimmentakezo1196]

For some reason, I can't get buoyancy working. I create a project, activate plugin, restart, create simple landscape with simple lake, add the BP_BuoyancyExample and ....that just sinks. I tried many times, looked all related videos on youtube. Can it be due to my computer? Or maybe there is a secret parameter somewhere?

[@fleurbird]

If you are able to see the water, it's not your computer.

[@BenCloward]

Did you try raising the cube up slightly so that it falls and hits the water when you turn on the simulation?

[@shimmentakezo1196]

@@fleurbird This is my thoughts !

[@shimmentakezo1196]

@@BenCloward Yes I tried that

[@bentripn]

@@shimmentakezo1196 I had some issues with the pontoons if they are set too small. Try using a pontoon size of 100 or greater. I was able to go smaller to 55 for my mesh but had to increase the buoyancy efficiency to make it work best for me. Hope this information helps!

[@HrGott]

... in a world where logs making ripples!

[@plasid2]

you forget about caustic