09-12-2025, 10:18 AM
(This post was last modified: 09-12-2025, 04:46 PM by josemendez.)
Hi,
The problem here is not substeps/iterations at all, seems to be an issue with the overall setup. Check the following:
- The hook object at the end of the rope must not be a child of the crane's root transform. (this should be an obvious one, but pointing out nonetheless). Otherwise the hook will instantaneously rotate when the crane rotates due to how parent-child transform relationships work, which is not what you want: the hook should hang from the rope instead.
- Make sure the rope is not colliding against the hook object it is attached to. The rope cannot both intersect and not intersect an object (attachment wants it to intersect the hook, but collisions want it not to), this it will lead to undesired jitter/flailing as the solver tries to simultaneously meet both conditions in vain. See "attachments inside colliders" in the manual.
Check the included "Crane" sample scene for reference on how to set up a crane.
let me know if I can be of further help,
kind regards
The problem here is not substeps/iterations at all, seems to be an issue with the overall setup. Check the following:
- The hook object at the end of the rope must not be a child of the crane's root transform. (this should be an obvious one, but pointing out nonetheless). Otherwise the hook will instantaneously rotate when the crane rotates due to how parent-child transform relationships work, which is not what you want: the hook should hang from the rope instead.
- Make sure the rope is not colliding against the hook object it is attached to. The rope cannot both intersect and not intersect an object (attachment wants it to intersect the hook, but collisions want it not to), this it will lead to undesired jitter/flailing as the solver tries to simultaneously meet both conditions in vain. See "attachments inside colliders" in the manual.
Check the included "Crane" sample scene for reference on how to set up a crane.
let me know if I can be of further help,
kind regards