Include v2i_hash

Core/include/Core/World.hpp

@@ -8,20 +8,11 @@
 #include <future>
 #include "ConcurrentQueue.hpp"
 #include "Entity.hpp"
-
+#include "Core/v2i_hash.hpp"
 
 #pragma once
 
-template<>
-struct std::hash<Vector2i>
-{
-    std::size_t operator()(const Vector2i& k) const
-    {
-        // Read 2x int32_t into one int64_t and return std::hash<int64_t> to prevent collisions.
-        // This doesn't really gain any performance until you zoom out a lot.
-        return std::hash<int64_t>()(((int64_t) k.x << 32) | ((int64_t) k.y));
-    }
-};
+
 
 namespace CaveGame::Core {
     class WorldAsyncIOThreadManager