I still remember watching those amazing Tornado Simulations by Martin Mirola which inspired me to do FX simulations.

Here's my Tornado Sim which is a part of Houdini Hollywood and this Module is completely FREE for everyone. Love giving back to community especially which inspired me so much!

The tornado Sim in this module can be setup in very easy ways and re-creating it barely takes 15-20 mins, everyone can feel free to watch the module and find out for themseves and can also fill their curosity if our methods are original or copied from tutorials ;)

The whole setup was built simply and the issues were tackled mostly with creative problem solving rather than going too techinical.

I used simple shape made from curve to emit smoke and then added some rotational velocities made from same shape to rotate the smoke.
The whole sim was split into 4 different pyro setups to make it feasible withut crashing the sim.
The top cloud lightning part was just sphere with noise.

The house was slowly activated from sleeping and added forces with threshold to break at certain impacts.

The trees were simulated in Vellum and instanced as USD in solaris.
The grass was faked with simple movement and scatter in solaris using instancer.

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Rendered in XPU - (2-3 mins) each frame
Max Ram Utilisation - Under 64GB

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Register here for FREE module releasing on 18th November 2026.
www.HoudiniHollywood.com

Made a little ident for work. Vdb advection in a solver. Lots of help from the elders scrolls of OD forum.

Hey Guys!

Common problem with absolute and relative paths inside your Houdini project.
Probably, from PRISM time there were hundreds of this kind of scripts. But it always a problem to find one so I "created" one humble script for myself and want to share with you.
Just put .py script in your project folder or paste in shell. It will check your root folder and change all paths in nodes to relative.
Instruction inside rep

https://github.com/ibackstrom/HoudiniAbsToRel

I am trying to rotate the sphere with a point that rotates 360 degrees (which was a success) but when the angle value is 0, then the sphere moves to the centre. For which the code was:-

float ang = radians(chf("ang"));
float rad = chf("rad");

for( int i = 0; i<ang; i++){
    float x = cos(ang) * rad;
    float z = sin(ang) * rad;

    @P = set(x, 0, z);
 } 

So to fix this problem and to have the point on one the coordinate of radius, I used the second code using if statement( and it was also a success but it felt like it was a bit longer):-

float ang = radians(chf("ang"));
float rad = chf("rad");

for( int i = 0; i<ang; i++){
    float x = cos(ang) * rad;
    float z = sin(ang) * rad;

    @P= set(x, 0, z);
    f@newx = x;
    f@newz = z;

}if (ang ==0){
    float x = f@newx;
    float z = f@newz;
    z = rad;
    @P = set(x, 0, z);
}

So, I am trying to find a solution to how to make it a bit shorter. Here's my attempt at that ( and it is showing an error):-

float ang = radians(chf("ang"));
float rad = chf("rad");

if ( ang != 0){
for( int i = 0; i<ang; i++){
    float x = cos(ang) * rad;
    float z = sin(ang) * rad;

    @P = set(x, 0, z);
    }
}else{
    x = radians(rad);
    z = radians(rad);
    @P = set(x, 0, z);
     }
}

Is there a way to improve that/a better way to fix the position when the angle is 0?

Hey everyone,

I need Redshift for Houdini 22.0.368. Can anyone help me get the compatible version or guide me on how to install it for this Houdini build?

If anyone has it or knows how to get it working, please let me know.

Thanks!

(v21, apprentice) Hello, I've been following along with a tutorial (this one) and got to the part where I add a white water source node to my cached fluid sim and I've only been getting an error. I think it's because I don't have a surface value on my fluidsurface node so I tried making one from the vdbfromparticlefluid but I still get an error. Can anyone give a pointer or two on what I could try next?

🇺🇸:  You can listen to the video in English through the video settings panel. We take a general look at the Houdini interface to familiarize ourselves with the application before diving into the details in future videos.