A function to find Unity3D object at a given screen point, using 2D colliders

Get 2D object at point

    private Collider2D[] m_Hits=new Collider2D[16]; // 16 may not be enough for everyone.

    private T GetTargetObject<T>(Vector3 mousePosition) where T:Component
    {
        var ray = Camera.main.ScreenPointToRay(mousePosition);
        var pos = ray.GetPoint(-ray.origin.z/ray.direction.z);
        var max = Physics2D.OverlapPointNonAlloc(pos, m_Hits);
        for (int ii = 0; ii < max; ii++)
        {
            var hit = m_Hits[ii];
            var res = hit.GetComponentInParent<T>();
            if (res)
                return res;
        }
        return null;
    }