Intro to Simulation Nodes Part 3: Particle Systems and Starting to Blow Things Up

[@TommasoMalaisi]

self object and the switch node to start a simulation.. thank you Johnny!

Excellent as always. Thanks!

[@aaronvdw]

Great series. You're one of the best explainers out there IMO. Keep up the great work!

[@ruslandad365]

VERY AMAZING TUTORIAL!!!! THANKS!!!!

[@blendercomp]

Awesomely awesome! It's not that you simply demonstrate the use of nodes to achieve a certain outcome, it's the high quality conceptual explanations of almost every aspect of it that makes this videotut take on such a HUGE instructional value! Hats off man! :)

[@JohnnyMatthews]

😊 thanks for the kind words

[@pitched7401]

Finally somebody who properly implements gravity. Thank you!

[@NB_nobody]

You have wonderful skill of teaching!

[@AnimatedHealthcare]

Great video! Appreciate the clear information and extra tidbits - Didn't realise about simulations only running when an output was connected. Great work!

[@_evildoer]

Interesting stuff at the end there using the switch. Didn't know that

[@glennet9613]

Hi, great tutorial series but when I switch on and off repeatedly it only explodes the first time I switch it on. Also when I added nodes (the ones to the Delete Geometry node) I couldn't get them to be included in the simulation zone - it still worked.

[@marcelowiek]

Same here. When I try to "restart" using the switch option, it just continues the previous animation where it has stopped previously. Have you figured out a workaround it? I'm using the Blender 4.0!

[@glennet9613]

@@marcelowiekSounds like it might be a change/bug in Blender. I'm on 4.0.2 No I just moved on to another tutorial. Blender changes so fast most tutorials are out of date.

[@marcelowiek]

I see! I just wanted it to restart every time I hit the switch, because I want to create several sprays turning on and off multiple times with geometry nodes. I got the result with particle systems to have full control but the performance gets heavy load.

[@zboy303]

That's interesting about the geometry switch resetting the simulation. What'd be nice now is to have a node (maybe controlled by random time) that re-adds the particles at the beginning so that you still see the trails of the previous particles.

[@JohnnyMatthews]

That’s part of the next video!

[@zboy303]

​@@JohnnyMatthewsexcellent!

[@eternalguy6023]

Awesome 😍

[@pfeffermartin642]

nice explayned

[@fidodido3649]

Look like your setup different from video in part II. In your previous video, you use velocity to scale by Delta time plug to Set Position node not velocity after add gravity, so which setup is right? In theory when I change the fps, I got the same position? but when I test they have different position a little! I test in both two ways setup!

[@fidodido3649]

every second, the position in different fps increase the same amount! I've tested 30 vs 60, and 10 vs 20!

[@fidodido3649]

When use Delta time, at frame 1 Delta time is 0, It start from frame two! And I think your previous setup, gravity get effect 1 frame later.

[@JackOkneel]

Invaluable tutorial. Curious as to the scaling of this. It’s probably still computationally inferior to Houdini, right? But I imagine with some cleverness could potentially achieve comparable results in certain situations?

[@Sertion]

Great tutorial. Will you be addressing that the -1,-1,z to 1,1,z random vectors will make the explosion look square from above in a future part? I've been trying to solve it in an easy to control from the modifier view way for a while but have been unable to build something I've liked so far.

[@JohnnyMatthews]

Yeah I’m going to try to hit that a little bit in the next video

[@bochang7230]

If u normalize the random vectors,It will help

[@anicapalini]

Just great, as usual so well explaned, I always learn many things..... I Love it