Restore the stable legacy Unity project

Assets/Scripts/ServerShared/ActionCollection.cs

@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+public abstract class NotAnActionCollection{}
+
+public class ActionCollection<T> : NotAnActionCollection where T : Message
+{
+    private List<Action<T>> _actions = new List<Action<T>>();
+
+    public void Add(Action<T> action)
+    {
+        _actions.Add(action);
+    }
+
+    public void Invoke(T message)
+    {
+        foreach (var action in _actions)
+        {
+            action(message);
+        }
+    }
+
+    public void Clear()
+    {
+        _actions.Clear();
+    }
+}