UnityEngine Simulation Object

UnityEngine.Simulation.Object.cs

namespace UnityEngine.Simulation
{
    public class Object
    {
        private static int s_IdCount = 0;

        private int m_InstanceID;

        private bool m_Alive = true;

        private string m_Name = "";

        public Object()
        {
            do
            {
                m_InstanceID = ++s_IdCount;
            } while (0 == m_InstanceID);
        }

        public static void Destroy(Object obj)
        {
            obj.m_Alive = false;
        }

        public override bool Equals(object other)
        {
            Object obj = other as Object;
            return (!(obj == null) || other == null || other is Object) && Compare(this, obj);
        }

        public override int GetHashCode()
        {
            return m_InstanceID;
        }

        public static bool operator ==(Object x, Object y)
        {
            return Compare(x, y);
        }

        public static bool operator !=(Object x, Object y)
        {
            return !Compare(x, y);
        }

        public static implicit operator bool(Object exists)
        {
            return !Compare(exists, null);
        }

        private static bool Compare(Object x, Object y)
        {
            bool flagX = !(x is Object);
            bool flagY = !(y is Object);
            bool result;
            if (flagX && flagY)
            {
                return true;
            }
            else if (flagY)
            {
                result = !x.m_Alive;
            }
            else if (flagX)
            {
                result = !y.m_Alive;
            }
            else
            {
                result = x.m_InstanceID == y.m_InstanceID;
            }
            return result;
        }

        public string Name
        {
            get
            {
                if (m_Alive)
                {
                    return m_Name;
                }
                else
                {
                    throw new UnityEngine.MissingReferenceException(string.Format(
                        "The object of type '{0}' has been destroyed but you are still trying to access it.\nYour script should either check if it is null or you should not destroy the object.",
                        GetType()));
                }
            }
            set
            {
                if (m_Alive)
                {
                    m_Name = value;
                }
                else
                {
                    throw new UnityEngine.MissingReferenceException(string.Format(
                        "The object of type '{0}' has been destroyed but you are still trying to access it.\nYour script should either check if it is null or you should not destroy the object.",
                        GetType()));
                }
            }
        }
    }
}