53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
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/*
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* =====================================================================================
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*
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* Filename: TextureAtlas.hpp
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*
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* Description:
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*
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* Created: 29/01/2020 16:34:15
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*
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* Author: Quentin Bazin, <quent42340@gmail.com>
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*
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* =====================================================================================
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*/
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#ifndef TEXTUREATLAS_HPP_
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#define TEXTUREATLAS_HPP_
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include <gk/core/IntTypes.hpp>
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#include <gk/core/SDLHeaders.hpp>
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class TextureAtlas {
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public:
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TextureAtlas() = default;
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void addFile(const std::string &filename);
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void packTextures();
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void saveToFile(const std::string &filename);
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u16 getTextureID(const std::string &filename);
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const SDL_Surface *getSurface() const { return m_atlas.get(); }
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private:
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// Expected texture size
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u16 m_width = 0;
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u16 m_height = 0;
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// Mapping between filename and internal texture ID
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std::unordered_map<std::string, u16> m_textureMap;
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// Textures to pack together
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using SurfacePtr = std::unique_ptr<SDL_Surface, decltype(&SDL_FreeSurface)>;
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std::unordered_map<std::string, SurfacePtr> m_textures;
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// Packed texture
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SurfacePtr m_atlas{nullptr, &SDL_FreeSurface};
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};
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#endif // TEXTUREATLAS_HPP_
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