additional package setup

Packages/com.boxfriend.utils@58cc9986a36b/Runtime/Utils/EventManager.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+
+namespace Boxfriend.Utils
+{
+    public class EventManager : Singleton<EventManager>
+    {
+        public delegate void Event(object arg, object sender);
+
+        private readonly Dictionary<string, Event> _events = new ();
+
+        public void RegisterEvent(string name)
+        {
+            if (_events.ContainsKey(name))
+                throw new ArgumentException($"Event {name} already registered");
+
+            _events.Add(name, null);
+        }
+        public void RegisterEvent (string name, Event callback)
+        {
+            if (_events.ContainsKey(name))
+                throw new ArgumentException($"Event {name} already registered");
+
+            _events.Add(name, callback);
+        }
+
+        public void UnregisterEvent(string name)
+        {
+            if (!_events.ContainsKey(name))
+                throw new ArgumentException($"Event {name} not registered");
+
+            _events.Remove(name);
+        }
+
+        public void SubscribeEvent (string name, Event callback)
+        {
+            if (!_events.ContainsKey(name))
+                throw new ArgumentException($"Event {name} not registered");
+
+            _events[name] += callback ?? throw new ArgumentNullException($"Event {name} callback is null");
+        }
+
+        public void UnsubscribeEvent (string name, Event callback)
+        {
+            if (!_events.ContainsKey(name))
+                throw new ArgumentException($"Event {name} not registered");
+
+            _events[name] -= callback ?? throw new ArgumentNullException($"Event {name} callback is null");
+        }
+
+        public void InvokeEvent (string name, object arg, object sender)
+        {
+            if (!_events.ContainsKey(name))
+                throw new ArgumentException($"Event {name} not registered");
+
+            _events[name]?.Invoke(arg, sender);
+        }
+    }
+}