private Point approach( Point landing, Side side ){
			Point approach = new Point( landing );
			switch( side ){
				case EAST:
					approach.x += landingOffset;
					break;
				case WEST:
					approach.x -= landingOffset;
					break;
				case NORTH:
					approach.y -= landingOffset;
					break;
				case SOUTH:
					approach.y += landingOffset;
					break;
			}
			return approach;
		}