(NDK) First commit

-Still missing a build file
-This is an Entity Component System, without any component nor system,
so this is an Entity. Yay.


Former-commit-id: f04d2fdfe8819826f940469c2618140a26afa637

SDK/include/NDK/Entity.hpp

@@ -0,0 +1,72 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#pragma once
+
+#ifndef NDK_ENTITY_HPP
+#define NDK_ENTITY_HPP
+
+#include <NDK/Prerequesites.hpp>
+
+namespace Ndk
+{
+	class World;
+
+	class NDK_API Entity
+	{
+		friend World;
+
+		public:
+			class Id;
+
+			Entity();
+			Entity(const Entity&) = default;
+			~Entity() = default;
+
+			void Kill();
+
+			Id GetId() const;
+			World* GetWorld() const;
+
+			bool IsValid() const;
+
+			Entity& operator=(const Entity&) = default;
+
+			bool operator==(const Entity& other) const;
+			bool operator!=(const Entity& other) const;
+
+			// Identifiant
+			struct Id
+			{
+				struct Part
+				{
+					nzUInt32 counter, index;
+				};
+
+				union
+				{
+					Part part;
+					nzUInt64 value;
+				};
+
+				bool operator==(const Id& other) const
+				{
+					return value == other.value;
+				}
+
+				bool operator!=(const Id& other) const
+				{
+					return !operator==(other);
+				}
+			};
+
+		private:
+			Entity(Id id, World* world);
+
+			Id m_id;
+			World* m_world;
+	};
+}
+
+#endif // NDK_ENTITY_HPP