Hi folks!
First post here.

So I've been trying to learn the ins and outs of Houdini recently and I am working on a shot of a tank shooting. The goal is to master different pyro scenarios combined with destruction. My question now however is how would I go about spawning smoke based of the movement of the tank?

What I am guessing is to calculate the velocity of the tank. And when that velocity reaches a certain value, spawn smoke.

I usually never post on forums, because I like to find out how to do it using other means. The issue is that since I've not used Houdini that much yet, knowing what to search for is a bit tricky.

Any guidance is much appreciated!

If you just wanna generate smoke from a geometry , when velocity of this geometry reach to certain value , So you can use Delete SOP . :idea:
Just append a Delete SOP and use this expression on it :

length($VX,$VY,$VZ) < 5

Just don't forget your Delete SOP should be set for Points.

Then use this Delete SOP for source of your Smoke.