Help Rope extension, vibration and collision

[josemendez]

This is what I want "The onContactEnter event in ObiContactEventDispatcher is triggered when a particle belonging to the actor first touches a collider." and using the rope as a path from that point to the end.

I tested this code (which is what your original code does I think, plus the corrections added throughout this thread) and it works correctly for me, or at least the way I think you want it to work:

Code:

using UnityEngine;
using Obi;

public class RopeContactNormalized : MonoBehaviour
{
    public ObiRope rope;

    // Start is called before the first frame update
    void Start()
    {
        GetComponent<ObiContactEventDispatcher>().onContactEnter.AddListener(OnRopeContactEnter);
    }

    public void OnRopeContactEnter(ObiSolver solver, Oni.Contact contact)
    {
        var world = ObiColliderWorld.GetInstance();
        float normalizedCoordinate = -1;

        int particleIndex = solver.simplices[contact.bodyA];
        var col = world.colliderHandles[contact.bodyB].owner;

        if (rope != null)
        {
            var elements = rope.elements;

            int elementIndex = -1;

            for (int i = 0; i < elements.Count; ++i)
            {
                var element = elements[i];
                if (element.particle1 == particleIndex || element.particle2 == particleIndex)
                {
                    elementIndex = i;
                    break;
                }
            }

            if (elementIndex != -1)
            {
                normalizedCoordinate = (float)elementIndex / elements.Count;
                Debug.Log("Normalized rope position: " + normalizedCoordinate);
            }
            else
            {
                Debug.LogWarning("Element not found for particle " + particleIndex);
            }
        }
        else
        {
            Debug.LogWarning("Rope reference is missing!");
        }

        if (normalizedCoordinate >= 0)
        {
            var section = rope.GetComponent<ObiPathSmoother>().GetSectionAt(normalizedCoordinate);
            Debug.DrawRay(section.position, section.normal, Color.red,10);
        }
    }
}