+- Obi Official Forum (https://obi.virtualmethodstudio.com/forum)
+-- Forum: Obi Users Category (https://obi.virtualmethodstudio.com/forum/forum-1.html)
+--- Forum: Obi Rope (https://obi.virtualmethodstudio.com/forum/forum-4.html)
+--- Thread: Help Extending rope and particle mass (/thread-949.html)
Extending rope and particle mass - drobi - 03-03-2019
Hi,
I've been fiddling around with Obi Rope to get a crane working, I got it working as I'd like except when extending the rope.
New particles added get a default Mass which is way too low for a stiff rope. my particles use a mass of 200.
Can I set a default mass for particles that get added? I tried going over the code but it seems to do something funky when setting the invmass.
Furthermore I have a problem when trying to extend the rope: it seems to be stuck, I first need to move something the rope is attached to before it will update the rope length.
Any help is appreciated.
Edit: I figured out the "stuck" part, that was my own stupidity.
For the hacky bit I changed the DEFAULT_PARTICLE mass to 200 but it still acts like a rubberband. In the inspector every particle seems to have the correct mass but when extending the rope it just acts like a yoyo. I set the Distance constraint to over 300 iterations but I never get a nice cable extension going.
Edit: I just saw Filo, is that maybe a better way to simulate a crane? Or should this just work?
Edit3: I figured out that the yoyo effect happens when the rope extends beyond it's original length. Say I have a rope of 2 meters initialized, but I can extend it arbitrarily, between the 2 meters everything works as it should but as soon as the cable extends beyond 2 meters it will just become a yoyo. Do I need to create a rope that is already on it's maximum size and spool it in?
That would be really problematic.
