Add tileset loading

include/bindings/ruby.h

@@ -116,6 +116,8 @@ DEF_SYM(pass)
 DEF_SYM(block)
 DEF_SYM(ignore)
 DEF_SYM(call)
+DEF_SYM(padding)
+DEF_SYM(offset)
 DEF_SYM(x)
 DEF_SYM(y)
 DEF_SYM(w)

include/window/window.h

@@ -98,6 +98,7 @@ public:
   ~Window();
 
   // Rendering functions
+  std::vector<uint64_t> load_image_set(const char *path, Vec2<float> tile_size, Vec2<float> padding, Vec2<float> offset, bool pixel_art);
   uint64_t load_image(const char *path, bool pixel_art);
   uint64_t create_image(Vec2<float> size, bool pixel_art);
   Vec2<float> get_image_size(uint64_t image_id);