HingeJoint-based rope building component

Rope.cs

using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

[RequireComponent(typeof(Rigidbody))]
public class Rope : MonoBehaviour
{
    public LineRenderer lineRenderer;
    public Transform endPoint;

    [Range(0.25f, 1f)]
    public float jointDistance = 1f;
    public float width = 0.05f;

    [SerializeField]
    private HingeJoint[] hinges;
    private Rigidbody startRigidBody;
    private Rigidbody endRigidBody;
    private HingeJoint endJoint;

    private void LateUpdate()
    {
        UpdateLineRenderer();
    }
    
    public void Rebuild()
    {
        if (!endPoint) return;

        if (!startRigidBody) startRigidBody = GetComponent<Rigidbody>();
        startRigidBody.isKinematic = true;
        
        float length = (transform.position - endPoint.position).magnitude;
        int segmentCount = Mathf.RoundToInt(length / jointDistance);

        if (hinges != null)
        {
            for (int i = 0; i < hinges.Length; i++)
            {
                DestroyImmediate(hinges[i].gameObject);
            }

            hinges = null;
        }
        hinges = new HingeJoint[segmentCount];

        Vector3 direction = (endPoint.position - transform.position).normalized;
        Vector3 localDirection = transform.TransformDirection(direction);
        
        for (int i = 0; i < hinges.Length; i++)
        {
            GameObject hingeObj = new GameObject("Hinge_" + i);
			hingeObj.transform.up = direction;
            hingeObj.transform.parent = this.transform;
            hingeObj.transform.localPosition = localDirection * (i * jointDistance);
               
            HingeJoint joint = hingeObj.AddComponent<HingeJoint>();

            CapsuleCollider collider = joint.gameObject.AddComponent<CapsuleCollider>();
            collider.radius = width;
            collider.center = new Vector3(0f, jointDistance * 0.5f, 0f);
            collider.height = jointDistance;

            if (i == 0) joint.connectedBody = startRigidBody;
            if (i > 0) joint.connectedBody = hinges[i - 1].GetComponent<Rigidbody>();
            
            hinges[i] = joint;
        }

        if (endJoint == null) endJoint = endPoint.GetComponent<HingeJoint>();
        if (endJoint == null) endJoint = endPoint.gameObject.AddComponent<HingeJoint>();
        if (endRigidBody == null) endRigidBody = endPoint.GetComponent<Rigidbody>();

        endJoint.connectedBody = hinges[hinges.Length - 1].GetComponent<Rigidbody>();
        
        RebuildLineRenderer();
    }

    private void UpdateLineRenderer()
    {
        if (!lineRenderer) return;
        
        for (int i = 0; i < hinges.Length; i++)
        {
            lineRenderer.SetPosition(i, hinges[i].transform.position);
        }
        
        lineRenderer.SetPosition(lineRenderer.positionCount-1, endPoint.position);
    }

    private void RebuildLineRenderer()
    {
        if (!lineRenderer) return;

        lineRenderer.positionCount = hinges.Length+1;
        lineRenderer.useWorldSpace = true;
        lineRenderer.widthMultiplier = width*2f;

        for (int i = 0; i < hinges.Length; i++)
        {
            lineRenderer.SetPosition(i, hinges[i].transform.position);
        }
        
        lineRenderer.SetPosition(lineRenderer.positionCount-1, endPoint.position);
    }
}
#if UNITY_EDITOR
[CustomEditor(typeof(Rope))]
public class RopeBuilderInspector : Editor
{
    private Rope script;

    private void OnEnable()
    {
        script = (Rope)target;
    }
    public override void OnInspectorGUI()
    {
        EditorGUI.BeginChangeCheck();
        
        base.OnInspectorGUI();
        
        //Can't destroy objects in OnValidate, so do it here
        if (EditorGUI.EndChangeCheck())
        {
            script.Rebuild();
        }
    }
}
#endif