flcc Posted April 4, 2019 Share Posted April 4, 2019 (edited) Hello I'm stuck on a problem that must be everything stupid. In this set-up I try to use @active attribute to use it in an RBD simulation. To modify @active at thee SOP level I use an attribute transfer. the problem is that the Active attribute must not return to zero when it leaves the object area. I'm trying to use a counter so that the "activation event" only takes place once. For this counter I need a solver, but that's where I get stuck, the SOP solver resets my @active attribute, even if it doesn't do anything. I know other ways to achieve this result, I looked at, among other things, the mestela files concerning these kind of setups. But I would really like to understand what's wrong here, because obviously something is slipping away from me. I also attach the file, if a kind soul wants to take a look at it. ActivatorObject.hipnc.zip Edited April 4, 2019 by flcc Quote Link to comment Share on other sites More sharing options...
flcc Posted April 4, 2019 Author Share Posted April 4, 2019 Finally, got it ! (with the help of french houdini discord, though) It was just a fundamental misunderstanding of the use of the SOPSolver. I used prev_frame as my main output without questions. Very bad idea ! Quote Link to comment Share on other sites More sharing options...
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