using UnityEngine;

public class CartPickup : MonoBehaviour
{
    public float pickupRange = 3f;
    public Transform holdPoint; // An empty GameObject in front of player
    private GameObject heldObject;
    private bool isHolding = false;

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.E))
        {
            if (isHolding)
            {
                DropObject();
            }
            else
            {
                Ray ray = new Ray(Camera.main.transform.position, Camera.main.transform.forward);
                if (Physics.Raycast(ray, out RaycastHit hit, pickupRange))
                {
                    if (hit.collider.CompareTag("Cart"))
                    {
                        PickupObject(hit.collider.gameObject);
                    }
                }
            }
        }

        // Optional: Keep the cart tightly in position
        if (isHolding && heldObject != null)
        {
            heldObject.transform.position = holdPoint.position;
            heldObject.transform.rotation = holdPoint.rotation;
        }
    }

    void PickupObject(GameObject obj)
    {
        heldObject = obj;
        isHolding = true;
        obj.GetComponent<Rigidbody>().isKinematic = true;
        obj.transform.SetParent(holdPoint);
        obj.transform.localPosition = Vector3.zero;
    }

    void DropObject()
    {
        if (heldObject != null)
        {
            heldObject.transform.SetParent(null);
            heldObject.GetComponent<Rigidbody>().isKinematic = false;
            heldObject = null;
        }
        isHolding = false;
    }
}