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Hi again everyone,

I'm working through a Pluralsight tutorial (Introduction to Houdini Pyro) for developing a firebreath sim. It was made in Houdini 15 and I only have access to Houdini 16. I've been running into some issues related to the different versions. One of my main problems at the moment is my pyro sim isn't colliding with the dragon geometry that I need to be using in my current project; there are some minor differences in settings as I need a much smaller flame with a different look, but otherwise I'm following the tutorial's steps closely. The POP network that the fluidsource is plugged into doesn't register that the dragon's head is a collision object. The tutorial doesn't do anything specific to make the two interact and their example works fine but mine doesn't collide at all. Has anyone done this tutorial series before and had success with this previously? Or are there any Houdini wizards out there who could take a look at my .hip file and suggest where I'm going astray? I've included some screen shots from the tutorial (Snake) and then from my file (Dragon), to give you an idea of what I'm working with. There's also the tutorial's .hip file, my current .hip file, and a link to the dragon geo alembic file included below. Any help or suggestions is greatly appreciated!

https://drive.google.com/open?id=0B4nUEqhUvCtpeVFBS0xTYVhRY0U  (Dragon Alembic)

Thanks again ODFORCE,

Chris (AUS)  

Dragon01.PNG

Dragon02.PNG

Dragon03.PNG

Dragon04.PNG

Snake01.PNG

Snake02.PNG

Snake03.PNG

Snake04.PNG

Mother_Dragon001.hipnc

Snake_Tutorial.hipnc

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Try to add velocity with a trail sop before the creation of the volume "collision and collisionvel", if you switch one the  visualization on collision vel, nothing happen because there is no velocity to grab from the points for fill the collision vel. that will fix the collision. Cheers

Edited by Dam

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