(15-04-2024, 11:21 AM)bozdo Wrote: just dont collide with each other at all like they have some kind of collider filter.

(15-04-2024, 12:05 PM)josemendez Wrote: Hi!

Have you checked whether they actually do have a filter?

How are you creating and spawning these smaller softbodies? Could you share your code for this?

(15-04-2024, 12:38 PM)bozdo Wrote:

Code:

    public void Spawn(JellyObject prefab, Vector3 position, Quaternion rotation, Action<JellyObject> OnSpawn = null)
    {
        instances++;
        int id = instances;

        //solver.OnEndStep += SpawnJelly;
        solver.OnPrepareFrame += SpawnJelly;

        void SpawnJelly(ObiSolver solver)
        {
            solver.OnPrepareFrame -= SpawnJelly;
            JellyObject jelly = Instantiate(prefab, position, rotation);
            jelly.transform.SetParent(jellyParent);

            spawnedObjects.Add(jelly);
            SetRandomColor(jelly);

            jelly.spawnID = id;

            if (jelly.Softbody)
            {
                //solver.AddActor(jelly.actor);
            }
            OnSpawn?.Invoke(jelly);
        }
    }

(15-04-2024, 01:19 PM)josemendez Wrote: No need to to do this in solver.OnPrepareFrame.

To add an actor to a solver, you just parent it under the solver transform (at any nesting level). Never call solver.AddActor manually unless you're 100% sure what you're doing, as it assumes all other conditions for the simulation to take place are met (both actor and solver have been initialized, the actor has a reference to the solver and it is below it in the scene hierarchy, etc).

kind regards

(15-04-2024, 02:13 PM)bozdo Wrote: it's doesnt do much
updated code

Code:

public void Spawn(JellyObject prefab, Vector3 position, Quaternion rotation, Action<JellyObject> OnSpawn = null)
    {
        instances++;
        int id = instances;

        JellyObject jelly = Instantiate(prefab, position, rotation);
        jelly.transform.SetParent(jellyParent);

        spawnedObjects.Add(jelly);
        SetRandomColor(jelly);

        jelly.spawnID = id;

        OnSpawn?.Invoke(jelly);
    }

(15-04-2024, 03:30 PM)josemendez Wrote: As per my first post: have you checked the collision filters, in case they’re set to not collide with each other?

These are set on a per-particle basis on the blueprint. I assume you’ve created the blueprint in-editor, then assigned it to the prefab instantiated by this code?

(15-04-2024, 03:43 PM)bozdo Wrote: I'm not doing anything with collision filters. In blueprints, the category of every particle is set to 1 and Collides with everything. It's true for all blueprints i'm using. Also in my first screenshot you can see that big softbody collides with one smaller softbody and doesnt collide with the other one, but they both have the same blueprint.

(15-04-2024, 04:06 PM)josemendez Wrote: Just to rule out basic setup issues: are all these softbodies simulated by the same solver? (Solvers don’t interact with each other)

In that case, there’s no obvious reason why they shouldn’t collide with each other. Would it be possible for you to send this project (or a similar one that reproduces the same issue) to support(at)virtualmethodstudio.com so that I can take a closer look?

Kind regards,