First cut of pulling out the relevant parts of my original game to make a little framework.

src/graphics/textures.hpp

@@ -0,0 +1,56 @@
+#pragma once
+#include <cstdint>
+#include <vector>
+#include <string>
+#include <SFML/Graphics/Sprite.hpp>
+#include <SFML/Graphics/Image.hpp>
+#include <SFML/Graphics/Texture.hpp>
+#include <unordered_map>
+#include <memory>
+#include "algos/matrix.hpp"
+
+namespace textures {
+
+  struct SpriteTexture {
+    std::shared_ptr<sf::Sprite> sprite = nullptr;
+    std::shared_ptr<sf::Texture> texture = nullptr;
+    sf::Vector2i frame_size;
+  };
+
+  using SpriteTextureMap = std::unordered_map<std::string, SpriteTexture>;
+
+  struct TextureManager {
+    std::vector<sf::Image> surfaces;
+    std::vector<size_t> ceilings;
+    std::vector<wchar_t> map_tile_set;
+    std::vector<int> ambient_light;
+    SpriteTextureMap sprite_textures;
+    SpriteTextureMap icon_textures;
+    std::unordered_map<std::string, size_t> name_to_id;
+    std::unordered_map<wchar_t, sf::Sprite> map_sprites;
+    sf::Texture map_sprite_sheet{"./assets/map_tiles.png"};
+  };
+
+  void init();
+
+  SpriteTexture get_sprite(const std::string& name, bool duped=false);
+  SpriteTexture get_icon(const std::string& name);
+
+  sf::Image load_image(const std::string& filename);
+
+  std::vector<int>& get_ambient_light();
+
+  std::vector<wchar_t>& get_map_tile_set();
+
+  const uint32_t* get_surface(size_t num);
+
+  sf::Image& get_surface_img(size_t num);
+
+  const uint32_t* get_ceiling(size_t num);
+
+  sf::Sprite& get_map_sprite(wchar_t display);
+
+  size_t get_id(const std::string& name);
+
+  size_t door_for_wall(size_t wall_id);
+}