add: MessageBus

src/Agents/Knowledge.cs

@@ -1,12 +1,22 @@
 using Godot;
+using Polonium.Interfaces;
+using Polonium.MessageManager;
 using Polonium.Resources;
 
 namespace Polonium.Agents;
 
-public abstract partial class Knowledge : Node
+public abstract partial class Knowledge : Node, IMessageClient
 {
-    [Signal]
-    public delegate void KnowledgeUpdatedEventHandler(KnowledgePatch update);
     public abstract void UpdateKnowledge(KnowledgePatch update);
+
+    public string PostCode { get; set; }
+    public virtual void ReceiveMessage(PoloniumMessage msg)
+    {
+        if(msg is KnowledgePatch update)
+            UpdateKnowledge(update);
+    }
+
+    public event IMessageClient.MessageSentEventHandler MessageSent;
+    public void SendMessage(PoloniumMessage msg) => MessageSent?.Invoke(msg);
 }