Unreal Engine 5 Tutorial - Niagara Fluids & Characters/Skeletal Mesh Collisions

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In this video we will take a look at how to add the ability for our Niagara Fluids to interact (interactive water) with the Player/Character or Animated Skeletal Meshes.
Learn how to add more complex interactions with FLIP Fluids in Unreal Engine 5 with a Niagara FX System.
* Changes in Unreal 5.1+ *
If you don't see the User Parameters (5:24), just look at the tabs you'll see a Tab for it when selecting the Niagara System. If you don't, check under Window, User Parameters and make sure its enabled in the Niagara FX Editor.
In the collisions list at (12:57) in Unreal 5.1+ you will see the Static Mesh, and Physics Asset Collision checkboxes will be missing. Ignore the step to check them on, because in 5.1+ they are automatically enabled and no longer in that list.
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Опубликовано:

10 сен 2022

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Комментарии : 49

@sebay4654 Год назад

I has no clue about mesh bool great piece of information and along with that this gives me basic information on how to fluid simulate in UE

@abhinavsinha293 10 месяцев назад

Thanks, that was quite helpful

@anakinkenway4769 6 месяцев назад

it was really helpful thanks !!!

@mkheisenberg Год назад

thank you so much!

@GILNAK_09 Год назад

thanks a lot maaan

@thesinglegoblin Год назад

crazy enough this even works in movie render queue, I was wondering if it would since you needed to run the level BP but it does.

@Gaientv Год назад

Thank you !! its crazy so we can use this method for every fluid made on Niagara actually ??!

@elenadmpl 11 месяцев назад

great tutorial is there any case to make a metahumn inside that?

@vid828 10 месяцев назад

Will this work for cinematics using sequencer? And basic mixamo charcter animations?

@ntjson Год назад

Great work! Do you have any recommendations on buoyancy or floating a collider mesh?

@tazwinsdevchannel Год назад

This ^^^

@onlyrussian2140 3 месяца назад

A good lesson. I am working on the UE version 5.3.2 and in my case, the water does not react to the character in any way, I did everything as in the video, perhaps this is due to the fact that when creating an object that we call "SkeletalMeshCollision", a slot appeared for the parameter that needs to be filled, it does not accept anything except SkeletalMeshComponent, and I do not such objects, how to fix it?

@JohnRiversOfficial Год назад

thanks love!

@Kno_696 Год назад

I need help with the water simulation, it works good but when I try to simulate it in game mode, it doesnt work.

@lilpillstudios677 Год назад

great tutorial. is there a way to get this working with animation like in the level sequencer?

@renderbucket Год назад

If you want to scrub the timebar and have predictable collisions for like cutscenes or short films. You can do that by caching out the Niagara FX so its baked down then you can offset and place it in the sequencer and treat it like a baked down animation. That is covered in this tutorial here, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RQuyRTRQg7s.html Cheers!

@thegreatSalu Год назад

Hi..is there to make the object wet and with static mesh?

@yunaseo7805 Год назад

Do you know How to make the code in BP_Pawn not in the level blueprint?

@ClydiieTwo Год назад

Thanks so much! Player interactions works like a dream. But I couldnt get objects with the actor tag to interact with the fluid.

@JohnRiversOfficial Год назад

maybe, select he actor and add a bouyancy component or go through the actor and ensure all collision / physics is enabled?

@PatrickTheDM Год назад

Very cool, I'll give it a go. Update: It worked great, but too much of a performance hit to actually use. I'm sure it's due to the size of the pool I needed. Still, it could be great in a room where the engine doesn't need to render too much.

@fuglong 10 месяцев назад

A little late but you could minimize calculations to just very close to the player and use a shader to fake the main water ripples

@PatrickTheDM 10 месяцев назад

@@fuglong Thanks, I may give it a go.

@ozanozenir2503 9 месяцев назад

its really not worth it unless it is a AAA game ( even they dont do it)

@sh0tiphone 2 месяца назад

how to do a realistic water splashes with collisions ?

@user-vp7kq6bh8q Год назад

I'm using Unreal 5.1 version, but I can't find a StaticMeshCollition

@renderbucket Год назад

In the collisions list at (12:57) in Unreal 5.1+ you will see the Static Mesh, and Physics Asset Collision checkboxes will be missing. Ignore the step to check them on, because in 5.1+ they are automatically enabled and no longer in that list.

@user-vp7kq6bh8q Год назад

@@renderbucket Thank you for the detailed explanation. It helped me a lot.:)

@zalansari6454 Год назад

Dude nice work, but a NOOB question: It looks like there's a performance hit... will this tax the system/engine?

@MonsterJuiced Год назад

Ofcourse it will. That fluid system is very expensive

@Enderking394 10 месяцев назад

I’m going to make a vr game demo where you can play with realistic simulated water using this

@rojakstudios Год назад

Great tutorial! Do you know if Niagara Fluids supersedes the Water System? I tried using the Water System with Fluid Sim on UE 5.0.3, but I couldn't get the character with interact with it. Also, do you know a way to add caustics to Niagara Fluids? Thanks in advance!

@renderbucket Год назад

Niagara fluids is not going to replace Unreals water system any time soon. Or the traditional way of cheating water with water surface plane and shaders. The Niagara fluids system is actual FLIP Fluid simulations being performed in realtime, which is the reason why they are very demanding and heavy performance wise. It may be used for certain FX but I think we are a least a handful of years away before our system hardware will be powerful enough to do those kinds of calculations/simulations in realtime on a larger scale.

@rojakstudios Год назад

@@renderbucket Ah, good to know. Thanks! I have to dig a little deeper to see why the Water System isn't working correctly.

@hangye9258 6 месяцев назад

This doesn't seem to work in 5.3.1.Would be appreciated if someone could provide an update or make a note here.

@hangye9258 6 месяцев назад

I ended up adding a "collider" tag to the character, but I'm still curious about what changes were made in version 5.3.1 that caused it to stop working.

@dohrah 3 месяца назад

@@hangye9258 hi can you please explain where exactly did you add the tag? Struggling to make it work on a metahuman. Thanks!

@julienteral9140 Год назад

Didnt work for me :( couldnt find the " use physics assets collision" box in the fluid control emitter.

@renderbucket Год назад

Check user parameters tab in Unreal 5.1, It moved to that tab in 5.1

@julienteral9140 Год назад

@@renderbucket Thanks ! Ended up just redoing the project 5.0 and it worked ;)

@Jacoby_lel Год назад

@@renderbucket There is no "use physics assets collision" box in the user paramers in unreal 5.1. There is 'User' PhysicsCollision but thats something else :(

@Jacoby_lel Год назад

Well i just used actor tag: collider for my character for now.

@julienteral9140 Год назад

@@renderbucket Still wasnt able to find it... I just have the "User Physics Collisions with "Defautl source" / "source actor / "mesh user parameter"