button and symbol events, PuzzleDetail log type

Assets/Desert/Runtime/Puzzle A/Symbol.cs

@@ -1,18 +1,50 @@
+using System;
 using UnityEngine;
+using Logger = EscapeRoomEngine.Engine.Runtime.Utilities.Logger;
+using LogType = EscapeRoomEngine.Engine.Runtime.Utilities.LogType;
 
 namespace EscapeRoomEngine.Desert.Runtime.Puzzle_A
 {
+    public enum SymbolEventType
+    {
+        Activated, Deactivated
+    }
+
+    public static class SymbolEventExtensions
+    {
+        public static string Description(this SymbolEventType type, Symbol symbol)
+        {
+            var action = type switch
+            {
+                SymbolEventType.Activated => "activated",
+                SymbolEventType.Deactivated => "deactivated",
+                _ => throw new ArgumentOutOfRangeException(nameof(type), type, null)
+            };
+
+            return $"{symbol} was {action}";
+        }
+    }
+
+    public delegate void SymbolEventHandler(SymbolEventType e);
+    
     [RequireComponent(typeof(Emission))]
     public class Symbol : MonoBehaviour
     {
+        public int symbolNumber;
         public float anglePosition;
+        public event SymbolEventHandler SymbolEvent;
 
         public bool Active
         {
-            get => _emission.active;
             set
             {
-                _emission.active = value; 
+                var previous = _emission.active;
+                _emission.active = value;
+
+                if (previous != value)
+                {
+                    OnSymbolEvent(value ? SymbolEventType.Activated : SymbolEventType.Deactivated);
+                }
             }
         }
 
@@ -27,5 +59,17 @@ namespace EscapeRoomEngine.Desert.Runtime.Puzzle_A
         {
             Active = false;
         }
+
+        private void OnSymbolEvent(SymbolEventType type)
+        {
+            Logger.Log(type.Description(this), LogType.PuzzleDetail);
+            
+            SymbolEvent?.Invoke(type);
+        }
+
+        public override string ToString()
+        {
+            return name;
+        }
     }
 }