TextureManager.h

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#pragma once
 
#include <string>
#include <unordered_map>
#include <memory>
#include <SDL3/SDL_render.h>
 
#include "ShitEngine/Core/Core.h"
 
namespace Shit {
    class TextureManager final {
        friend class ResourceManager; // 只能通过ResourceManager来管理
 
    public:
        TextureManager(const TextureManager&) = delete;
        TextureManager& operator=(const TextureManager&) = delete;
        TextureManager(TextureManager&&) = default;
        TextureManager& operator=(TextureManager&&) = default;
        ~TextureManager() = default;
 
    private:
        TextureManager() = default;
 
        struct SDLTextureDeleter {
            void operator()(SDL_Texture* texture) const {
                if (texture) {
                    SDL_DestroyTexture(texture);
                }
            }
        };
 
        SDL_Texture* loadTexture(const std::string& filePath);
        SDL_Texture* getTexture(const std::string& filePath);
        void unloadTexture(const std::string& filePath);
        void clearTexture();
 
        std::unordered_map<std::string, std::unique_ptr<SDL_Texture, SDLTextureDeleter>> m_textures;
    };
}