11-01-2025, 01:21 PM
(This post was last modified: 11-01-2025, 01:31 PM by josemendez.)
(11-01-2025, 12:25 AM)SemtrexHD Wrote: Update
Hi,
Some tips based on what I saw in your video:
-Set the stretch compliance to zero. Any other value will make the rope more elastic, and cause it to bounce more.
-Set the stretching scale to 1. This will make the rope strive to keep 100% of its rest length.
-Reduce the rope blueprint resolution. Using 0.1-0.3 will reduce the amount of particles per length unit, not only making the simulation cheaper but also reducing bounciness.
-Increase the solver’s “damping” parameter to make energy dissipate faster.
- Adjust the masses of the hook and the rope so that the hook is slightly heavier than the rope, but not by an excessive margin. Physics engines (Obi being no exception) have trouble with mass ratios larger than 1:10, that is, objects that are more than ten times heavier than other objects.
(11-01-2025, 01:50 AM)Jawsarn Wrote: Another thing is that you're setting the stretching scale to <1 but you are extending with a length in terms of distance in the world, which I think means that you are extending with a rope of X length that will actually be resting length to 0.4 X. You can probably leave the stretching to default values (1, 0) as you get some stretch bouncing from the inaccuracy of the simulation anyway.
Jawsarn’s advice is 100% on point. Using any values other than 0 and 1 for compliance and stretching scale respectively will work against your interest in this case.
0 compliance means “make the rope as stiff as currently possible (given substeps, resolution, and other parameters that affect sim accuracy)”. Stretching scale set to 1 means “make sure the rope’s length is 100% of its physical length, not any shorther or longer”.
kind regards,