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Question by MattyB123 · Sep 19, 2021 at 11:06 AM · physics

Drop object if stuck behind wall

it works but I get this in the console

NullReferenceException: Object reference not set to an instance of an object Pickup.Update () (at Assets/Pickup.cs:41)

here is my script please help public float PickUpRange = 5; public float moveForce = 250; public Transform holdParent; private GameObject heldObj; float distance;

 // Start is called before the first frame update
 void Start()
 {
     
 }

 // Update is called once per frame
 void Update()
 {

     if (Input.GetKeyDown(KeyCode.E))
     {
         if (heldObj == null)
         {
             RaycastHit hit;
             if (Physics.Raycast(transform.position, transform.TransformDirection(Vector3.forward), out hit, PickUpRange))
             {      
                     PickupObject(hit.transform.gameObject); 
             }
         }
         else
         {
             DropObject();
         }
     }

     distance = Vector3.Distance(heldObj.transform.position, holdParent.position);
     if (distance >= 2f)
     {
         DropObject();
     }

     if(heldObj != null)
     {
         MoveObject();
     }

   

 }

   

 void MoveObject()
 {
     if(Vector3.Distance(heldObj.transform.position, holdParent.position) > 0.1f)
     {
         Vector3 moveDirection = (holdParent.position - heldObj.transform.position);
         heldObj.GetComponent<Rigidbody>().AddForce(moveDirection * moveForce);

     }
 }

 void PickupObject(GameObject pickObj)
 {
     if(pickObj.GetComponent<Rigidbody>())
     {

         Rigidbody objRig = pickObj.GetComponent<Rigidbody>();
         objRig.useGravity = false;
         objRig.drag = 15;

         objRig.transform.parent = holdParent;
         heldObj = pickObj;

     }
 }

 void DropObject()
 {
     Rigidbody heldRig = heldObj.GetComponent<Rigidbody>();
     heldRig.useGravity = true;
     heldRig.drag = 1;

     heldObj.transform.parent = null;
     heldObj = null;

 }

}

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