ResourceManager.h

#pragma once
#include <string>
#include <unordered_map>
#include <SFML/Graphics.hpp>
#include <SFML/Audio.hpp>
#include <json.hpp>
 
#include "../utils/Common.h"
 
/*
* Could remove singleton and reuse the class:
*   Core resources for the menu, menu font, etc
*   Scene resources for the scene coming up, meaning that everything will be deleted when the scene is gone
* 
* For the time being, audio is not being handled, as there is more to look into for sounds, music, sound buffers, etc.
* + Priority task
*/

class ResourceManager
{
public:
    static ResourceManager& GetInstance()
    {
        static ResourceManager instance;
        return instance;
    }
 
    // Texture
    void LoadTexture(const std::string& id, const std::string& file_path);
    const sf::Texture* GetTexture(const std::string& id) const;
    void UnloadTexture(const std::string& id);
 
    // Font
    void LoadFont(const std::string& id, const std::string& file_path);
    const sf::Font* GetFont(const std::string& id) const;
    void UnloadFont(const std::string& id);
    
    // Cleanup
    void UnloadAll();
    
private:
    // Singleton class.
    ResourceManager() = default; // Private constructor.
    ResourceManager(const ResourceManager&) = delete; // Delete copy constructor.
    ResourceManager& operator=(const ResourceManager&) = delete; // Delete assignment operator.
    ResourceManager(ResourceManager&&) = delete; // Delete move constructor.
    ResourceManager& operator=(ResourceManager&&) = delete; // Delete move assignment operator.
 
    // Maps of the resources
    std::unordered_map<std::string, sf::Texture> textures_;
    std::unordered_map<std::string, sf::Font> fonts_;
};