Channel Script

[greg68]

I'm new to Houdini so I'm having a lot of trouble figuring out what is possible.
What I would like to do is take a channel from a midiin CHOP and use it to trigger a short animation. The note channel is either 1 (while the note is playing) or 0 (when it's not). Every time it moves to 1, I want the animation to happen. Even better, the speed of the animation could be scaled so the animation ends when it moves back to 0. I have no idea how to do this. I intended to write a script that calculated the animation information and sent it to the appropriate channel, and a main script which scanned through the channel and called the animation script every time it reached 1.

So far, all I can do is export the channel somewhere. That doesn't help me at all because the 1's and 0's only provide the start and end information and that has nothing to do with the transformation.

Does anyone know how to do this or have suggestions for another way to acheive the same result? Thank you very much.

Steve O.

[greg68]

Alright, I have discovered that the solution is to use dynamics, but never having used Houdini dynamics, I am still having problems. I can use the MIDIIN channel to drive a switch DOP and switch between a rigid body and a static solver. Then my next problem is for example, if I add a gravity force, at first the object begins to accelerate downward as it should, then gravity switches off as it should, but when it switches back on the object falls super fast as if it had continued accelerating the entire time. How can I restart the gravity?