Now we can trigger events!

Client/JavascriptHook.cs

@@ -189,7 +189,7 @@ namespace CoopClient
             OnChatMessage?.Invoke(from, message);
         }
 
-        public void InvokeServerEvent(string eventName, params object[] args)
+        public void InvokeServerEvent(string eventName, object[] args)
         {
             _serverEvents.FirstOrDefault(x => x.Key == eventName).Value?.Invoke(args);
         }
@@ -464,9 +464,9 @@ namespace CoopClient
             AddServerEvent(eventName, arg => action(arg));
         }
 
-        public void TriggerServerEvent(string eventName, params object[] args)
+        public void SendTriggerEvent(string eventName, params object[] args)
         {
-            // TODO
+            Main.MainNetworking.SendTriggerEvent(eventName, args);
         }
     }
 }

Client/Networking.cs

@@ -1242,6 +1242,20 @@ namespace CoopClient
             }
 #endif
         }
+
+        public void SendTriggerEvent(string eventName, params object[] args)
+        {
+            NetOutgoingMessage outgoingMessage = Client.CreateMessage();
+
+            new Packets.ServerClientEvent()
+            {
+                EventName = eventName,
+                Args = new List<object>(args)
+            }.PacketToNetOutGoingMessage(outgoingMessage);
+
+            Client.SendMessage(outgoingMessage, NetDeliveryMethod.ReliableUnordered, (byte)ConnectionChannel.Event);
+            Client.FlushSendQueue();
+        }
         #endregion
     }
 }

Server/Client.cs

@@ -227,7 +227,7 @@ namespace CoopServer
             }
         }
 
-        public void TriggerServerEvent(string eventName, params object[] args)
+        public void SendTriggerEvent(string eventName, params object[] args)
         {
             try
             {

Server/Packets/Packets.cs

@@ -350,6 +350,7 @@ namespace CoopServer
                 EventName = reader.ReadString(eventNameBytes);
 
                 // Read args
+                Args = new List<object>();
                 int argsCount = reader.ReadInt();
                 for (int i = 0; i < argsCount; i++)
                 {

Server/Server.cs

@@ -33,6 +33,7 @@ namespace CoopServer
 
         public static Resource RunningResource = null;
         public static Dictionary<Command, Action<CommandContext>> Commands;
+        public static readonly Dictionary<TriggerEvent, Action<EventContext>> TriggerEvents = new();
 
         public static readonly List<Client> Clients = new();
 
@@ -539,6 +540,47 @@ namespace CoopServer
                                         }
                                     }
                                     break;
+                                case (byte)PacketTypes.ServerClientEvent:
+                                    {
+                                        try
+                                        {
+                                            int len = message.ReadInt32();
+                                            byte[] data = message.ReadBytes(len);
+
+                                            Packets.ServerClientEvent packet = new Packets.ServerClientEvent();
+                                            packet.NetIncomingMessageToPacket(data);
+
+                                            long senderNetHandle = message.SenderConnection.RemoteUniqueIdentifier;
+                                            Client client = null;
+                                            lock (Clients)
+                                            {
+                                                client = Util.GetClientByNetHandle(senderNetHandle);
+                                            }
+
+                                            if (client != null)
+                                            {
+                                                if (TriggerEvents.Any(x => x.Key.EventName == packet.EventName))
+                                                {
+                                                    EventContext ctx = new()
+                                                    {
+                                                        Client = client,
+                                                        Args = packet.Args.ToArray()
+                                                    };
+
+                                                    TriggerEvents.FirstOrDefault(x => x.Key.EventName == packet.EventName).Value?.Invoke(ctx);
+                                                }
+                                                else
+                                                {
+                                                    Logging.Warning($"Player \"{client.Player.Username}\" attempted to trigger an unknown event! [{packet.EventName}]");
+                                                }
+                                            }
+                                        }
+                                        catch (Exception e)
+                                        {
+                                            DisconnectAndLog(message.SenderConnection, type, e);
+                                        }
+                                    }
+                                    break;
                                 default:
                                     Logging.Error("Unhandled Data / Packet type");
                                     break;
@@ -1078,5 +1120,28 @@ namespace CoopServer
                 RegisterCommand(attribute.Name, attribute.Usage, attribute.ArgsLength, (Action<CommandContext>)Delegate.CreateDelegate(typeof(Action<CommandContext>), method));
             }
         }
+
+        public static void RegisterEvent(string eventName, Action<EventContext> callback)
+        {
+            TriggerEvent ev = new(eventName);
+
+            if (TriggerEvents.ContainsKey(ev))
+            {
+                throw new Exception("TriggerEvent \"" + ev.EventName + "\" was already been registered!");
+            }
+
+            TriggerEvents.Add(ev, callback);
+        }
+        public static void RegisterEvents<T>()
+        {
+            IEnumerable<MethodInfo> events = typeof(T).GetMethods().Where(method => method.GetCustomAttributes(typeof(TriggerEvent), false).Any());
+
+            foreach (MethodInfo method in events)
+            {
+                TriggerEvent attribute = method.GetCustomAttribute<TriggerEvent>(true);
+
+                RegisterEvent(attribute.EventName, (Action<EventContext>)Delegate.CreateDelegate(typeof(Action<EventContext>), method));
+            }
+        }
     }
 }

Server/ServerScript.cs

@@ -480,10 +480,43 @@ namespace CoopServer
         {
             Server.RegisterCommands<T>();
         }
+
+        /// <summary>
+        /// Register a class of events
+        /// </summary>
+        /// <typeparam name="T">The name of your class with functions</typeparam>
+        public static void RegisterEvents<T>()
+        {
+            Server.RegisterEvents<T>();
+        }
         #endregion
     }
 
-    [AttributeUsage(AttributeTargets.Method)]
+    [AttributeUsage(AttributeTargets.Method, Inherited = false)]
+    public class TriggerEvent : Attribute
+    {
+        public string EventName { get; set; }
+
+        public TriggerEvent(string eventName)
+        {
+            EventName = eventName;
+        }
+    }
+
+    public class EventContext
+    {
+        /// <summary>
+        /// Gets the client which executed the command
+        /// </summary>
+        public Client Client { get; internal set; }
+
+        /// <summary>
+        /// Arguments (all standard but no string!)
+        /// </summary>
+        public object[] Args { get; internal set; }
+    }
+
+    [AttributeUsage(AttributeTargets.Method, Inherited = false)]
     public class Command : Attribute
     {
         /// <summary>