CTT/Server/Model/Game/Helper/SceneHelper.cs

using System;
using System.Collections.Generic;

namespace ET
{
    public static class SceneHelper
    {
        public static int DomainZone(this Entity entity)
        {
            return entity.DomainScene()?.Zone ?? 0;
        }

        public static Scene DomainScene(this Entity entity)
        {
            if (entity == null)
                return null;
            return (Scene)entity.Domain;
        }

    }
}