Made fight fightable

scripts/CSharp/Common/Util/LinqExtras.cs

@@ -16,6 +16,16 @@ public static class LinqExtras
         }
     }
 
+    public static void ForEach<T>(this IEnumerable<T> self, Action<T, int> action)
+    {
+        var i = 0;
+        foreach (var t in self)
+        {
+            action.Invoke(t, i);
+            i++;
+        }
+    }
+
     public static T? Random<T>(this IEnumerable<T> self)
     {
         var selfList = self.ToList();
@@ -24,4 +34,16 @@ public static class LinqExtras
         var randomIndex = new Random().Next(0, selfList.Count);
         return selfList[randomIndex];
     }
+
+    public static IEnumerable<T> Shuffle<T>(this IEnumerable<T> self)
+    {
+        var selfList = self.ToList();
+        var random = new Random();
+        for (var i = 0; i < selfList.Count; i++)
+        {
+            var j = random.Next(i, selfList.Count);
+            (selfList[i], selfList[j]) = (selfList[j], selfList[i]);
+        }
+        return selfList;
+    }
 }