EntityManager.h

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// SPDX-FileCopyrightText: 2026 Valentin Eloy
// SPDX-License-Identifier: GPL-3.0-or-later
 
#pragma once
 
#include <cstdint>
#include <vector>
 
#include "Core/Ecs/Entity.h"

 
namespace core {

class EntityManager {
public:
    [[nodiscard]] Entity create();

    void destroy(Entity entity);

    [[nodiscard]] bool isAlive(Entity entity) const;

    [[nodiscard]] std::size_t aliveCount() const;
 
private:
    std::vector<Entity::Generation> _generations;
    std::vector<bool> _alive;
    std::vector<Entity::Index> _freeIndices;
    std::size_t _aliveCount = 0;
};
 
}  // namespace core