source: OniSplit/Objects/Door.cs

using System;
using System.Xml;
using Oni.Metadata;
using Oni.Xml;

namespace Oni.Objects
{
    internal class Door : GunkObject
    {
        public DoorClass Class;
        public int ScriptId;
        public int KeyId;
        public DoorFlags Flags;
        public Vector3 Center;
        public float ActivationRadius = 30.0f;
        public readonly string[] Textures = new string[2];
        public ObjectEvent[] Events;

        public Door()
        {
            TypeId = ObjectType.Door;
        }

        protected override void WriteOsd(BinaryWriter writer)
        {
            writer.Write(ClassName, 63);
            writer.WriteUInt16(ScriptId);
            writer.WriteUInt16(KeyId);
            writer.WriteUInt16((ushort)Flags);
            writer.Write(Center);
            writer.Write(ActivationRadius * ActivationRadius);
            writer.Write(Textures[0], 63);
            writer.Write(Textures[1], 63);
            ObjectEvent.WriteEventList(writer, Events);
        }

        protected override void ReadOsd(BinaryReader reader)
        {
            ClassName = reader.ReadString(63);
            ScriptId = reader.ReadUInt16();
            KeyId = reader.ReadUInt16();
            Flags = (DoorFlags)reader.ReadInt16();
            Center = reader.ReadVector3();
            ActivationRadius = FMath.Sqrt(reader.ReadSingle());
            Textures[0] = reader.ReadString(63).ToUpperInvariant();
            Textures[1] = reader.ReadString(63).ToUpperInvariant();
            Events = ObjectEvent.ReadEventList(reader);
        }

        protected override void WriteOsd(XmlWriter xml)
        {
            throw new NotImplementedException();
        }

        protected override void ReadOsd(XmlReader xml, ObjectLoadContext context)
        {
            string className = null;

            while (xml.IsStartElement())
            {
                switch (xml.LocalName)
                {
                    case "Class":
                        className = xml.ReadElementContentAsString();
                        break;
                    case "DoorId":
                        ScriptId = xml.ReadElementContentAsInt();
                        break;
                    case "KeyId":
                        KeyId = xml.ReadElementContentAsInt();
                        break;
                    case "Flags":
                        Flags = xml.ReadElementContentAsEnum<DoorFlags>();
                        break;
                    case "Center":
                        Center = xml.ReadElementContentAsVector3();
                        break;
                    case "SquaredActivationRadius":
                        ActivationRadius = FMath.Sqrt(xml.ReadElementContentAsFloat());
                        break;
                    case "ActivationRadius":
                        ActivationRadius = xml.ReadElementContentAsFloat();
                        break;
                    case "Texture":
                    case "Texture1":
                        Textures[0] = xml.ReadElementContentAsString().ToUpperInvariant();
                        break;
                    case "Texture2":
                        Textures[1] = xml.ReadElementContentAsString().ToUpperInvariant();
                        break;
                    case "Events":
                        Events = ObjectEvent.ReadEventList(xml);
                        break;
                    default:
                        xml.Skip();
                        break;
                }

            }

            Class = context.GetClass(TemplateTag.DOOR, className, DoorClass.Read);
            GunkClass = Class;
        }
    }
}