From f6b5bde7f735bfb1da2d847226e3ef82c4c20c1f Mon Sep 17 00:00:00 2001
From: M Stoeckl <code@mstoeckl.com>
Date: Mon, 24 Jun 2024 07:58:21 -0400
Subject: [PATCH] Speed up GameObjectManager::get_singleton_by_type

It had been scanning through the full list of objects, instead of
looking up the singleton in m_objects_by_type_index.
---
 src/supertux/game_object_manager.hpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/supertux/game_object_manager.hpp b/src/supertux/game_object_manager.hpp
index 4fcd6f775a4..82bfc9f5bad 100644
--- a/src/supertux/game_object_manager.hpp
+++ b/src/supertux/game_object_manager.hpp
@@ -116,10 +116,11 @@ class GameObjectManager
   template<class T>
   T& get_singleton_by_type() const
   {
-    const auto& range = get_objects_by_type<T>();
-    assert(range.begin() != range.end());
-    assert(range.begin()->is_singleton());
-    return *range.begin();
+    const auto& objs = get_objects_by_type_index(typeid(T));
+    assert(objs.size() == 1);
+    T* obj = static_cast<T*>(objs[0]);
+    assert(obj->is_singleton());
+    return *obj;
   }
 
   template<class T>