#pragma once

#include <unordered_map>
#include "../../core/Defines.h"
#include "../../core/BitHelper.h"
#include "../Material/Block.h"
#include "../Material/MaterialLibraryPointer.h"

namespace std
{
	//template<>
	//struct hash<Block<MaterialLibraryPointer>>
	//{
	//	size_t operator()(const Block<MaterialLibraryPointer> &value) const
	//	{
	//		size_t res = 0;
	//		for (size_t i = 0; i < value.size(); i++)
	//			res ^= BitHelper::CircularShiftLeft<size_t>(hash<MaterialLibraryPointer>()(value.Get(i)), i);
	//		return res;
	//	}
	//};

	template<typename T>
	struct hash<Block<T>>
	{
		size_t operator()(const Block<T> &value) const
		{
			size_t res = 0;
			for (size_t i = 0; i < value.size(); i++)
				res ^= BitHelper::CircularShiftLeft<size_t>(hash<T>()(value.Get(i)), i);
			return res;
		}
	};
}