resources/events/test2.tres

@@ -1,8 +0,0 @@
-[gd_resource type="Resource" script_class="EventResource" load_steps=2 format=3 uid="uid://bgfxakxxfmoxs"]
-
-[ext_resource type="Script" uid="uid://ci3t5mvnopntg" path="res://scripts/CSharp/Low Code/Events/EventResource.cs" id="1_jm77s"]
-
-[resource]
-script = ExtResource("1_jm77s")
-_showLog = true
-metadata/_custom_type_script = "uid://ci3t5mvnopntg"

scripts/CSharp/Low Code/Events/EventListener.cs

@@ -1,4 +1,3 @@
-using System;
 using Godot;
 using Godot.Collections;
 
@@ -23,6 +22,26 @@ public partial class EventListener : Node
     /// The signal that is triggered when this listener is called by one of the <see cref="EventListener._eventResources"/>.
     /// </summary>
     [Signal] public delegate void EventRaisedEventHandler();
+    
+    /// <summary>
+    /// The signal that is triggered when this listener is called by one of the <see cref="EventListener._eventResources"/>.
+    /// </summary>
+    [Signal] public delegate void EventRaisedWithPayloadEventHandler(Variant payload);
+    
+    /// <summary>
+    /// A signal that is triggered when the payload of one of the <see cref="EventListener._eventResources"/> changed.
+    /// </summary>
+    [Signal] public delegate void PayloadChangedEventHandler(Variant payload, Variant oldPayload);
+    
+    /// <summary>
+    /// A signal that is triggered when the payload of one of the <see cref="EventListener._eventResources"/> changed.
+    /// </summary>
+    [Signal] public delegate void NewEventPayloadEventHandler(Variant payload);
+    
+    /// <summary>
+    /// A signal that is triggered when the payload of one of the <see cref="EventListener._eventResources"/> changed.
+    /// </summary>
+    [Signal] public delegate void OldEventPayloadEventHandler(Variant oldPayload);
 
 
     /// <summary>
@@ -53,10 +72,24 @@ public partial class EventListener : Node
     /// Called by a <see cref="EventResource"/>s from the <see cref="_eventResources"/> array.
     /// Propagates the event by emitting <see cref="EventRaised"/> signal.
     /// </summary>
-    public void Invoke()
+    public void EventInvoked(Variant payload)
     {
         if(_showLog)
             GD.Print("Event Raised on: " + Name);
         EmitSignal(SignalName.EventRaised);
+        EmitSignal(SignalName.EventRaisedWithPayload, payload);
+    }
+    
+    /// <summary>
+    /// Called by a <see cref="EventResource"/>s from the <see cref="_eventResources"/> array.
+    /// Propagates the event by emitting <see cref="EventRaised"/> signal.
+    /// </summary>
+    public void EventPayloadChanged(Variant payload, Variant oldPayload)
+    {
+        if(_showLog)
+            GD.Print($"Calling Event Payload Changed Signals on: " + Name);
+        EmitSignal(SignalName.PayloadChanged, payload, oldPayload);
+        EmitSignal(SignalName.NewEventPayload, payload);
+        EmitSignal(SignalName.OldEventPayload, oldPayload);
     }
 }

scripts/CSharp/Low Code/Events/EventResource.cs

@@ -14,6 +14,24 @@ public partial class EventResource : Resource
     /// Log into console when this event resource is adding or removing listeners, and when it's raised.
     /// </summary>
     [Export] private bool _showLog;
+
+    [Export]
+    public Variant Payload
+    {
+        get { return _payload; }
+        set
+        {
+            if (!_payload.Equals(value))
+            {
+                _lastPayload = _payload;
+                _payload = value;
+                ValueChangeHandler();
+            }
+        }
+    }
+
+    private Variant _payload;
+    private Variant _lastPayload;
     
     /// <summary>
     /// Raise-Button Call with Editor Export for easier debugging.
@@ -56,7 +74,22 @@ public partial class EventResource : Resource
         
         foreach (var eventListener in _eventListeners)
         {
-            eventListener.Invoke();
+            eventListener.EventInvoked(_payload);
         }
     }
+
+    /// <summary>
+    /// Called when the Payload value changed.
+    /// </summary>
+    public void ValueChangeHandler()
+    {
+        if(_showLog)
+            GD.Print($"Event payload changed from {_lastPayload} to {_payload} on event resource: " + ResourcePath.GetFile().TrimSuffix(".tres"));
+        
+        foreach (var eventListener in _eventListeners)
+        {
+            eventListener.EventPayloadChanged(_payload, _lastPayload);
+        }
+    }
+    
 }