Assets/_DDD/_Scripts/GameFramework/EventBus.meta

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Assets/_DDD/_Scripts/GameFramework/EventBus/EventBus.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace DDD
+{
+    public static class EventBus
+    {
+        private static readonly Dictionary<Type, List<object>> HandlerDictionary = new();
+
+        public static void Register<T>(IEventHandler<T> handler) where T : IEvent
+        {
+            var type = typeof(T);
+            if (!HandlerDictionary.ContainsKey(type))
+            {
+                HandlerDictionary[type] = new List<object>();
+            }
+            
+            HandlerDictionary[type].Add(handler);
+        }
+
+        public static void Unregister<T>(IEventHandler<T> handler) where T : IEvent
+        {
+            var type = typeof(T);
+            if (HandlerDictionary.TryGetValue(type, out var list))
+            {
+                list.Remove(handler);
+                if (list.Count == 0)
+                {
+                    HandlerDictionary.Remove(type);
+                }
+            }
+        }
+
+        public static void Publish<T>(T evt) where T : IEvent
+        {
+            var type = typeof(T);
+            if (HandlerDictionary.TryGetValue(type, out var list))
+            {
+                foreach (var handler in list.Cast<IEventHandler<T>>())
+                {
+                    handler.Handle(evt);
+                }
+            }
+        }
+
+        public static void ClearAll()
+        {
+            HandlerDictionary.Clear();
+        }
+    }
+}

Assets/_DDD/_Scripts/GameFramework/EventBus/EventBus.cs.meta

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Assets/_DDD/_Scripts/GameFramework/EventBus/IEvent.cs

@@ -0,0 +1,7 @@
+namespace DDD
+{
+    public interface IEvent
+    {
+        
+    }
+}

Assets/_DDD/_Scripts/GameFramework/EventBus/IEvent.cs.meta

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+guid: ffb2216f8e1a979449b7fb4caa575033

Assets/_DDD/_Scripts/GameFramework/EventBus/IEventHandler.cs

@@ -0,0 +1,7 @@
+namespace DDD
+{
+    public interface IEventHandler<in T> where T : IEvent
+    {
+        void Handle(T evt);
+    }
+}

Assets/_DDD/_Scripts/GameFramework/EventBus/IEventHandler.cs.meta

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