Intermediate refactor to move everything over to using the textures module rather than everyone using one TexturePack thing.

texture.hpp

@@ -13,13 +13,12 @@ struct SpriteTexture {
   std::shared_ptr<sf::Texture> texture = nullptr;
 };
 
-struct TexturePack {
+struct TextureManager {
   std::vector<sf::Image> surfaces;
   std::unordered_map<std::string, SpriteTexture> sprite_textures;
   std::unordered_map<wchar_t, int> char_to_texture;
   sf::Image floor;
   sf::Image ceiling;
-  SpriteTexture sword;
 
   void load_tiles();
   void load_sprites();