107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#pragma once
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#ifndef NDK_BASESYSTEM_HPP
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#define NDK_BASESYSTEM_HPP
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#include <Nazara/Core/Bitset.hpp>
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#include <NDK/Entity.hpp>
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#include <vector>
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namespace Ndk
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{
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class World;
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class NDK_API BaseSystem
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{
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friend class Sdk;
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friend Entity;
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friend World;
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public:
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inline BaseSystem(SystemIndex systemId);
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inline BaseSystem(const BaseSystem&);
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BaseSystem(BaseSystem&&) noexcept = default;
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virtual ~BaseSystem();
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inline void Enable(bool enable = true);
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virtual std::unique_ptr<BaseSystem> Clone() const = 0;
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bool Filters(const Entity* entity) const;
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inline const std::vector<EntityHandle>& GetEntities() const;
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inline SystemIndex GetIndex() const;
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inline int GetUpdateOrder() const;
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inline float GetUpdateRate() const;
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inline World& GetWorld() const;
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inline bool IsEnabled() const;
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inline bool HasEntity(const Entity* entity) const;
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void SetUpdateOrder(int updateOrder);
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inline void SetUpdateRate(float updatePerSecond);
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inline void Update(float elapsedTime);
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BaseSystem& operator=(const BaseSystem&) = delete;
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BaseSystem& operator=(BaseSystem&&) noexcept = default;
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protected:
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template<typename ComponentType> void Excludes();
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template<typename ComponentType1, typename ComponentType2, typename... Rest> void Excludes();
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inline void ExcludesComponent(ComponentIndex index);
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static SystemIndex GetNextIndex();
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template<typename ComponentType> void Requires();
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template<typename ComponentType1, typename ComponentType2, typename... Rest> void Requires();
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inline void RequiresComponent(ComponentIndex index);
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template<typename ComponentType> void RequiresAny();
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template<typename ComponentType1, typename ComponentType2, typename... Rest> void RequiresAny();
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inline void RequiresAnyComponent(ComponentIndex index);
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virtual void OnUpdate(float elapsedTime) = 0;
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private:
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inline void AddEntity(Entity* entity);
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virtual void OnEntityAdded(Entity* entity);
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virtual void OnEntityRemoved(Entity* entity);
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virtual void OnEntityValidation(Entity* entity, bool justAdded);
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inline void RemoveEntity(Entity* entity);
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inline void SetWorld(World* world) noexcept;
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inline void ValidateEntity(Entity* entity, bool justAdded);
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static inline bool Initialize();
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static inline void Uninitialize();
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std::vector<EntityHandle> m_entities;
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Nz::Bitset<Nz::UInt64> m_entityBits;
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Nz::Bitset<> m_excludedComponents;
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mutable Nz::Bitset<> m_filterResult;
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Nz::Bitset<> m_requiredAnyComponents;
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Nz::Bitset<> m_requiredComponents;
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SystemIndex m_systemIndex;
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World* m_world;
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bool m_updateEnabled;
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float m_updateCounter;
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float m_updateRate;
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int m_updateOrder;
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static SystemIndex s_nextIndex;
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};
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}
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#include <NDK/BaseSystem.inl>
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#endif // NDK_BASESYSTEM_HPP
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