[SerializeField] private List<GameObject> placeableobjects = new List<GameObject>();
    [SerializeField] private LayerMask terrainlayer;
    private GameObject selectedobject;


    void Update()
    {
        moveselectedobject();
    }

    public void instantiateGameObject(int i)
    {
        selectedobject = Instantiate(placeableobjects[i]);   // another script is passing an int to this method
    }

    private void moveselectedobject()
    {
        if (selectedobject != null)
        {
            RaycastHit hit;
            if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), out hit, 300, terrainlayer))
            {
                selectedobject.transform.position = new Vector3(hit.point.x, selectedobject.GetComponent<Collider>().bounds.size.y / 2, hit.point.z);
            }

            if (Input.GetKey(KeyCode.Y))
            {
                selectedobject.transform.eulerAngles += new Vector3(0, 1, 0);
            }

            if (Input.GetMouseButtonDown(0))
            {
                GameObject instance = Instantiate(placeableobjects[2], new Vector3(hit.point.x, 0.025f, hit.point.z), Quaternion.identity);
                instance.transform.rotation = selectedobject.transform.rotation;
                Destroy(selectedobject);
                selectedobject = null;
            }
            else if (Input.GetKeyDown(KeyCode.Escape))
            {
                Destroy(selectedobject);
            }

        }
    }
}