NetworkMessageID.cs

using System;
using Mirror;

namespace Networking.Shared
{
    [Serializable]
    public readonly struct NetworkMessageID : IEquatable<NetworkMessageID>
    {
        public readonly int Value;

        public NetworkMessageID(int value)
        {
            Value = value;
        }
        
        public static NetworkMessageID GetID<T>() where T : struct, NetworkMessage
        {
            string fullName = typeof(T).FullName;
            int hash = fullName.GetStableHashCode();
            return new NetworkMessageID(hash);
        }

        public bool Equals(NetworkMessageID other) => Value == other.Value;

        public override bool Equals(object obj) => obj is NetworkMessageID other && Equals(other);

        public override int GetHashCode() => Value.GetHashCode();

        public override string ToString() => $"NetworkMessageID({Value})";

        public static bool operator ==(NetworkMessageID left, NetworkMessageID right) => left.Equals(right);

        public static bool operator !=(NetworkMessageID left, NetworkMessageID right) => !left.Equals(right);
    }
}