OpenSim.Region.Framework.Scenes.ScenePresence.HaveNeighbor C# (CSharp) Method

        protected int HaveNeighbor(Cardinals car, ref int[] fix)
        {
            uint neighbourx = m_regionInfo.RegionLocX;
            uint neighboury = m_regionInfo.RegionLocY;

            int dir = (int)car;

            if (dir > 1 && dir < 5) //Heading East
                neighbourx++;
            else if (dir > 5) // Heading West
                neighbourx--;

            if (dir < 3 || dir == 8) // Heading North
                neighboury++;
            else if (dir > 3 && dir < 7) // Heading Sout
                neighboury--;

            int x = (int)(neighbourx * Constants.RegionSize);
            int y = (int)(neighboury * Constants.RegionSize);
            GridRegion neighbourRegion = m_scene.GridService.GetRegionByPosition(m_scene.RegionInfo.ScopeID, x, y);

            if (neighbourRegion == null)
            {
                fix[0] = (int)(m_regionInfo.RegionLocX - neighbourx);
                fix[1] = (int)(m_regionInfo.RegionLocY - neighboury);
                return dir * (-1);
            }
            else
                return dir;
        }