From 926a69a06a302775591107142f3b1a6cff7fe4b5 Mon Sep 17 00:00:00 2001
From: Rutherther <fandabohacek@gmail.com>
Date: Tue, 17 Jan 2023 21:45:06 +0100
Subject: [PATCH] fix(game): do not add game responder multiple times

---
 .../NosSmooth.Game/Extensions/ServiceCollectionExtensions.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Core/NosSmooth.Game/Extensions/ServiceCollectionExtensions.cs b/Core/NosSmooth.Game/Extensions/ServiceCollectionExtensions.cs
index a78b3c0..a742d58 100644
--- a/Core/NosSmooth.Game/Extensions/ServiceCollectionExtensions.cs
+++ b/Core/NosSmooth.Game/Extensions/ServiceCollectionExtensions.cs
@@ -148,6 +148,11 @@ public static class ServiceCollectionExtensions
     /// <returns>The collection.</returns>
     public static IServiceCollection AddGameResponder(this IServiceCollection serviceCollection, Type gameResponder)
     {
+        if (serviceCollection.Any(x => x.ImplementationType == gameResponder))
+        { // already added... assuming every packet responder was added even though that may not be the case.
+            return serviceCollection;
+        }
+
         if (!gameResponder.GetInterfaces().Any
             (
                 i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IGameResponder<>)
-- 
2.48.1