Terraria.IO.WorldFile.LoadSigns C# (CSharp) Method

        private static void LoadSigns(BinaryReader reader)
        {
            short num4 = reader.ReadInt16();
            int index = 0;
            while (index < num4)
            {
                Sign sign;
                string str = reader.ReadString();
                int num2 = reader.ReadInt32();
                int num3 = reader.ReadInt32();
                Tile tile = Main.tile[num2, num3];
                if (tile.active() && ((tile.type == 0x37) || (tile.type == 0x55)))
                {
                    sign = new Sign
                    {
                        text = str,
                        x = num2,
                        y = num3
                    };
                }
                else
                {
                    sign = null;
                }
                Main.sign[index] = sign;
                index++;
            }
            while (index < 0x3e8)
            {
                Main.sign[index] = null;
                index++;
            }
        }