Use flat_multimap insead of custom flat map

src/CMakeLists.txt

@@ -58,7 +58,6 @@ add_executable(HumanGL
 
         Utility/EnumHelpers.h
         Utility/StridedIterator.h
-        Utility/VectorMultiMap.h
 
         InterfaceBlocks/DisplayInterfaceBlock.cpp
         InterfaceBlocks/DisplayInterfaceBlock.h

src/Components/UserInterface.cpp

@@ -26,7 +26,7 @@ auto UserInterface::onUpdate(Engine& engine) -> void
     uint16_t index = 0;
     for (const auto& entry : m_blocks)
     {
-        entry.value->onDrawUI(index, engine, *this);
+        entry.second->onDrawUI(index, engine, *this);
         if (index < m_blocks.size() - 1)
             InterfaceBlock::addSeparator();
         ++index;

src/Components/UserInterface.h

@@ -6,10 +6,10 @@
 #define USERINTERFACE_H
 
 #include <imgui.h>
+#include <flat_map>
 
 #include "Engine/Engine.h"
 #include "Engine/EngineComponent.h"
-#include "Utility/VectorMultiMap.h"
 
 class MeshRenderer;
 
@@ -49,7 +49,7 @@ class UserInterface : public EngineComponent
     std::string m_name;
     ImguiWindowData m_windowData;
 
-    VectorMultiMap<float, std::unique_ptr<InterfaceBlock>> m_blocks;
+    std::flat_multimap<float, std::unique_ptr<InterfaceBlock>> m_blocks;
 
 public:
     explicit UserInterface(Object& object, const std::string_view& name = "default interface", const ImguiWindowData& windowData = {});