/// <summary>
        /// Gets the map markers between the specified coordinates.
        /// </summary>
        /// <returns>The map markers.</returns>
        /// <param name="minX">Minimum X coordinate.</param>
        /// <param name="minY">Minimum Y coordinate.</param>
        /// <param name="maxX">Maximum X coordinate.</param>
        /// <param name="maxY">Maximum Y coordinate.</param>
        public IEnumerable <MapMarker> GetMapMarkers(int minX, int minY, int maxX, int maxY)
        {
            Rectangle2D targetArea = new Rectangle2D(minX, minY, maxX, maxY);

            return(worldManager
                   .GetMapMarkers()
                   .Where(x => targetArea.Contains(x.Location)));
        }