ProtoBuf DataModel Example Project

using ProtoBuf;
using System;
using System.Collections.Generic;

namespace DataModels
{
    [ProtoContract]
    public class EntityState
    {
        [ProtoMember(1)]
        public int id;
        [ProtoMember(2)]
        public string name;
        [ProtoMember(3)]
        public float hp;
        [ProtoMember(4)]
        public MyVector3 position;
        [ProtoMember(5)]
        public MyQuaternion rotation;
    }

    [ProtoContract]
    public class EntityStateList
    {
        [ProtoMember(1)]
        public Dictionary<int, EntityState> serializableItems;
    }

    [ProtoContract]
    public class MyVector3
    {
        [ProtoMember(1)]
        public float x;
        [ProtoMember(2)]
        public float y;
        [ProtoMember(3)]
        public float z;

        public MyVector3()
        {
            this.x = 0f;
            this.y = 0f;
            this.z = 0f;
        }

        public MyVector3(float x, float y, float z)
        {
            this.x = x;
            this.y = y;
            this.z = z;
        }
    }

    [ProtoContract]
    public class MyQuaternion
    {
        [ProtoMember(1)]
        public float x;
        [ProtoMember(2)]
        public float y;
        [ProtoMember(3)]
        public float z;
        [ProtoMember(4)]
        public float w;

        public MyQuaternion()
        {
            this.x = 0f;
            this.y = 0f;
            this.z = 0f;
            this.w = 0f;
        }

        public MyQuaternion(float x, float y, float z, float w)
        {
            this.x = x;
            this.y = y;
            this.z = z;
            this.w = w;
        }
    }
}