#pragma once

#include <shared_mutex>
#include <vector>
#include <utils.hpp>
#include <object/entity.hpp>

namespace Game::State {
    class GameState {
        public:
            static GameState& getInstance() { static GameState instance; return instance; }

            // Retrieve a COPY of the entities - Only used by renderer, use getAtIndex() for generic access
            const std::vector<Object::Entity>& getEntities();
            // Retrieve a REFERENCE of the entities; DANGEROUS!
            std::vector<Object::Entity>* getEntitiesRef();
            // Update entity at index, by REFERENCE
            Object::Entity* getAtIndex(size_t at);

        private:
            mutable std::shared_mutex mMutex;
            std::vector<Object::Entity> mEntities;
    };
}