Need help to record a trigger frame , it reads the trigger frame but looses the information and I know because the next frame updated it, I believe there must be something wrong with the logic, can anyone look and advise the correct way of doing it.

thanks

figured, if anyone need the same thing here is the file below, thanks to the following thread

http://forums.odforce.net/topic/20238-creating-a-boolean-attribute-that-returns-the-frame-numberlike-a-hit/ [forums.odforce.net]

You can't create a ‘variable/attribute’ that persists over changing frames for the data (points/prims…) if that data is seeing the same code for each frame.

What you have to do is create some kind of conditional if/else statements based on those frame changes.

I'm guessing that is the issue ( your intended ‘record’ value is changing when you don't want it to ).

Seeing the solver node in there throws me off a bit since I have very little understanding/knowledge of solvers, hence I can't follow through the logic completely of what's going on in the scene.

However, if it is what I think; I know your issue too well.

Have had many cases when I just needed to create a ‘variable’ at a certain frame that would persist over time/frames unchanged.

Almost like a ‘global’ variable.

I've asked about this before, and some have suggested using a time shift node. It may help.

Haven't put in an RFE for it, but I think adding some kind of sytax to vex whereby one can create a ‘variable/attribute’ at a specific frame and ‘lock’ it to that value at that point and be able to access it from any other frame/time later could make coding much simpler( and easier to be more creative )….along with arrays of arrays…but I digress.

Here's a thread in which staff gave me an overview of what I was asking back in March

https://www.sidefx.com/forum/topic/48556/?page=1#post-219383 [www.sidefx.com]