Crane

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Crane : MonoBehaviour
{
    [SerializeField] private GameObject chain;

      [SerializeField] private Rigidbody startPoint;
     [SerializeField] private Rigidbody endPoint;
     [SerializeField] private float linkLength = 1.0f; // Length of each chain link


    private List<GameObject> chains = new List<GameObject>();

    private void Awake()
    {
        GreateChains();
    }

    void GreateChains()
    {
         Vector3 direction = (endPoint.position - startPoint.position).normalized;
        float distanceToEndPoint = Vector3.Distance(startPoint.position, endPoint.position);
        int linkCount = Mathf.CeilToInt(distanceToEndPoint / linkLength);
        
        Rigidbody previousLink = null;

        for (int i = 0; i < linkCount; i++)
        {
            // Calculate position for the current link
            Vector3 linkPosition = startPoint.position + direction * linkLength * i;

            // Instantiate the link
            GameObject currentLink = Instantiate(chain, linkPosition, Quaternion.identity);

            //Add it to list
            chains.Add(currentLink);

             // Get the Rigidbody of the current link
            Rigidbody currentRigidbody = currentLink.GetComponent<Rigidbody>();

            // Connect the current link to the previous one
            HingeJoint hingeJoint = currentLink.GetComponent<HingeJoint>();
            hingeJoint.connectedBody = previousLink;

            // Save the current link as the previous for the next iteration
            previousLink = currentRigidbody;
        }
        
        //Connect the last link to the endPoint
        HingeJoint pot = endPoint.GetComponent<HingeJoint>();
        pot.connectedBody = previousLink;

        //Connect the first chain to startPoint
        chains[0].GetComponent<HingeJoint>().connectedBody = startPoint;
    }
}