74 lines
1.4 KiB
C++
74 lines
1.4 KiB
C++
#pragma once
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#include <cstddef>
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#include <tuple>
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#include <vector>
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#include <Entities/Components.h>
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#include <Containers.h>
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#include <utility.h>
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class EntityManager;
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class Entity;
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using ComponentsContainer = std::tuple
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<
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container::Array<Transform, util::MAX_ENTITIES>,
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container::Array<Texture, util::MAX_ENTITIES>,
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container::Array<BoundingBox, util::MAX_ENTITIES>
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>;
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class EntityMemoryPool
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{
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private:
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friend class EntityManager;
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friend class Entity;
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ComponentsContainer m_components;
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container::Array<Tag, util::MAX_ENTITIES> m_tags;
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container::Array<bool, util::MAX_ENTITIES> m_aliveStates;
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container::Array<size_t, util::MAX_ENTITIES> m_ids;
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private:
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EntityMemoryPool();
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EntityMemoryPool(const EntityMemoryPool&) = delete;
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static EntityMemoryPool& instance()
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{
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static EntityMemoryPool pool{};
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return pool;
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}
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template<typename T>
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bool hasComponent(EntityIndex index) const
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{ return std::get<container::Array<T, util::MAX_ENTITIES>>(m_components)[index].active; }
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template<typename T>
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T& getComponent(EntityIndex index)
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{
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return std::get<container::Array<T, util::MAX_ENTITIES>>(m_components)[index];
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}
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Tag getTag(EntityIndex index) const
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{
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return m_tags[index];
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}
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bool getAlive(EntityIndex index) const
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{
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return m_aliveStates[index];
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}
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size_t& getId(EntityIndex index)
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{
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return m_ids[index];
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}
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void removeEntity(EntityIndex index)
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{
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m_aliveStates[index] = false;
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return;
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}
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};
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