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#pragma once
#include <vector>
#include "component.h"
namespace yage
{
/**
* The entity is currently just an unsigned integer, which may change to a
* class in the future.
*/
typedef unsigned int Entity;
/**
* Has to keep track of all the different entities and their current state.
*
* The key actions on an Entity are: deleting, creating.
*/
class EntityManager
{
public:
Entity create_entity();
EntityManager &delete_entity(Entity entity);
bool is_valid(Entity entity) const;
EntityManager &add_component(Entity entity, BaseComponent *component);
private:
Entity update_next_entity();
Entity next_entity_ = 0;
public:
std::vector<ComponentGroup> component_group_;
std::vector<ComponentMask> component_masks_;
std::vector<Entity> deleted_;
};
} // namespace yage
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