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  • Published 26 Sep 2024

Particle system physics update

Hey guys,

I think it’s time to update Blender’s particle system. Adding collision, soft body, and rigid body dynamics within the system would be a huge improvement. For example, if we use a collection as the particle source with different objects, being able to simulate their individual weights and physics would be incredibly useful.

In my current project, the client wants a VFX shot where Temu cardboard packets and nylon (softbody) packs rain down onto an actor holding an umbrella. They should behave differently and have different weights. I’ve found Blender’s current system struggles with this. In addition to this the collisions aren’t accurate, the "Size Deflect" option seems to be buggy (collisions occur too far above the object and there is sadly no offset control), and the particles/packets fall through each other.

I am not a particle expert so maybe I am just missing something, but I searched the internet and I found blogposts where people had similar problems. Maybe is this just how the system works right now?

Let me know.

best, Imre

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Development Status: Open

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imremeszaros
26 Sep 2024

3 Comments

effire

This has been mentioned many times in Blender Today. At the moment, as far as I know, there is no developer in the Blender development team who could work on developing and improving simulations. Mantaflow development was suspended many years ago and since then there have been no changes. Alas. Now there is a branch with RBD simulations in Geometry Nodes, but I think this will not be enough for you. So I can recommend you to use Houdini for simulations in conjunction with Blender. I also tried Embergen and in my situation Houdini won hands down. You can combine different simulations with each other. And every year Houdini develops as fast as Blender. Or faster. And every year SideFX makes Houdini easier to use. Also, you can calculate almost any simulation on a video card, if your video card memory allows it. An Indi license is inexpensive. And you can save a little by buying it on Steam. There are also lessons on YouTube related to how to render your simulations in Blender. For example, on the Entagma channel. And if you are a little familiar with Geometry Nodes, then mastering Houdini will not seem too difficult for you. I have been using the Blender and Houdini bundle in my work for a long time and can safely recommend it.

2
imremeszaros Author

Thank you, I definitely give it a try!

I have been using Blender for many years and it has always been great, especially the models and hair are not inferior to MAYA and Houdini. However, since version 3.6.4 of Blender, the mirror combing of hair has always been wrong. I wonder if the next version can solve this problem? Looking forward to it!face-pink-tears