First import

include/coords.hpp

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+#ifndef id305A77366E3B4D3C84CC345C93A7C38B
+#define id305A77366E3B4D3C84CC345C93A7C38B
+
+#include <cstddef>
+
+namespace dk {
+	typedef std::size_t CoordType;
+
+	struct Coords {
+		CoordType width;
+		CoordType height;
+	};
+} //namespace dk
+
+#endif

include/doorkeeper.hpp

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+#ifndef id5A4C05FA7D264B65B7B7D14A0792E3A2
+#define id5A4C05FA7D264B65B7B7D14A0792E3A2
+
+#include "coords.hpp"
+
+namespace dk {
+	class Viewport;
+
+	class Tyler {
+	public:
+		Tyler ( const Coords& parCoords );
+		virtual ~Tyler ( void ) noexcept = default;
+
+		virtual bool batch_load ( const Coords& parFrom, const Coords& parTo );
+		virtual bool single_load ( const Coords& parCoords );
+
+	private:
+		const Coords size_;
+
+	};
+} //namespace dk
+
+#endif

include/itemswithid.hpp

@@ -0,0 +1,33 @@
+#ifndef id9B2FF4B4CA4244EAB93C619479A8E816
+#define id9B2FF4B4CA4244EAB93C619479A8E816
+
+#include <FBVector.h>
+
+namespace dk {
+	template <typename T, typename C>
+	class ItemsWithID {
+		typedef C container_type;
+	public:
+		typedef T value_type;
+		typedef typename container_type::size_type size_type;
+		typedef typename container_type::size_type id_type;
+		typedef value_type& reference_type;
+
+		ItemsWithID ( void ) = default;
+		~ItemsWithID ( void ) noexcept = default;
+
+		id_type add ( const value_type& parNewVal );
+		void erase ( id_type parID );
+		reference_type operator[] ( id_type parID );
+		const reference_type operator[] ( id_type parID ) const;
+
+
+	private:
+		container_type items_;
+
+		// see:
+		// https://github.com/facebook/folly/blob/master/folly/docs/FBVector.md
+	};
+} //namespace dk
+
+#endif

include/viewport.hpp

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+#ifndef id0ADBCC15BA574485BF3267254090D99B
+#define id0ADBCC15BA574485BF3267254090D99B
+
+#include "coords.hpp"
+
+namespace dk {
+	class Viewport {
+	public:
+		explicit Viewport ( const Coords& parSize );
+		Viewport ( const Coords& parSize, const Coord; parPos );
+		~Viewport ( void ) noexcept = default;
+
+		Viewport& operator= ( const Viewport& ) = default;
+
+	private:
+		Coords size_;
+		Coords position_;
+	};
+} //namespace dk
+
+#endif