Big Update

Author: IntoTheDev

Runtime/Hub.cs

@@ -2,43 +2,31 @@
 
 namespace ToolBox.Signals
 {
-	public static class Hub
-	{
-		private static readonly Dictionary<int, List<IReceiver>> _signalToReceivers = new Dictionary<int, List<IReceiver>>(16);
-
-		public static void Dispatch<T>(in T value)
-		{
-			int hash = typeof(T).GetHashCode();
-
-			if (!_signalToReceivers.TryGetValue(hash, out var receivers))
-				return;
-
-			int count = receivers.Count;
-
-			for (int i = count - 1; i >= 0; i--)
-				(receivers[i] as IReceiver<T>).Receive(in value);
-		}
-
-		public static void Add<T>(IReceiver<T> receiver)
-		{
-			int hash = typeof(T).GetHashCode();
-
-			if (_signalToReceivers.TryGetValue(hash, out var receivers) && !receivers.Contains(receiver))
-			{
-				receivers.Add(receiver);
-
-				return;
-			}
-
-			_signalToReceivers.Add(hash, new List<IReceiver> { receiver });
-		}
-
-		public static void Remove<T>(IReceiver<T> receiver)
-		{
-			int hash = typeof(T).GetHashCode();
-
-			if (_signalToReceivers.TryGetValue(hash, out var receivers) && receivers.Contains(receiver))
-				receivers.Remove(receiver);
-		}
-	}
-}
+    public static class Hub<S> where S : struct, ISignal
+    {
+        private static readonly List<IReceiver<S>> _receivers = new List<IReceiver<S>>(8);
+
+        public static S Last { get; private set; } = default;
+
+        public static void Add(IReceiver<S> receiver)
+        {
+            if (!_receivers.Contains(receiver))
+                _receivers.Add(receiver);
+        }
+
+        public static void Remove(IReceiver<S> receiver)
+        {
+            if (_receivers.Contains(receiver))
+                _receivers.Remove(receiver);
+        }
+
+        public static void Dispatch(in S value)
+        {
+            Last = value;
+            int count = _receivers.Count - 1;
+
+            for (int i = count; i >= 0; i--)
+                _receivers[i].Receive(in value);
+        }
+    }
+}

Runtime/IReceiver.cs

@@ -1,10 +1,7 @@
 namespace ToolBox.Signals
 {
-	public interface IReceiver { }
-
-	public interface IReceiver<T> : IReceiver
-	{
-		void Receive(in T value);
-	}
-}
-	
+    public interface IReceiver<S> where S : struct, ISignal
+    {
+        void Receive(in S value);
+    }
+}

Runtime/ISignal.cs

@@ -0,0 +1,4 @@
+namespace ToolBox.Signals
+{
+    public interface ISignal { }
+}

Runtime/ISignal.cs.meta

@@ -3,17 +3,17 @@
 
 namespace ToolBox.Signals
 {
-	public abstract class Listener<T> : MonoBehaviour, IReceiver<T>
+	public abstract class Listener<S> : MonoBehaviour, IReceiver<S> where S : struct, ISignal
 	{
-		[SerializeField] private UnityEvent<T> _onDispatched = null;
+		[SerializeField] private UnityEvent<S> _onDispatched = null;
 
 		private void OnEnable() =>
-			Hub.Add(this);
+			Hub<S>.Add(this);
 
 		private void OnDisable() =>
-			Hub.Remove(this);
+			Hub<S>.Remove(this);
 
-		public void Receive(in T value) =>
+		public void Receive(in S value) =>
 			_onDispatched?.Invoke(value);
 	}
 }

Runtime/Listener.cs

@@ -1,6 +1,6 @@
 {
   "name": "com.intothedev.signals",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "displayName": "Signals",
   "description": "Lightweight type-safe messaging system.",
   "author": {