Aurora.Modules.CityBuilder.CityMap.this C# (CSharp) Метод

        public Scene this[int rx, int ry]
        {
            get
            {
                if (rx < 0 || ry < 0 || rx > cityRegions.GetUpperBound(0) || ry > cityRegions.GetUpperBound(1))
                {
                    return (null);
                }
                return (cityRegions[rx, ry]);
            }
            set
            {
                if (rx < 0 || ry < 0 || rx > cityRegions.GetUpperBound(0) || ry > cityRegions.GetUpperBound(1))
                {
                    return;
                }
                if (value == null)
                    return;
                cityRegions[rx,ry] = value;
            }
        }