The problem was keeping a reference in a class/object means that it will not get updated copies when levelmanager makes a new level. Honestly that whole constelation of bullshit needs to die. Closes #62.

gui/ritual_ui.hpp

@@ -39,7 +39,6 @@ namespace gui {
         guecs::UI $gui;
         GameLevel $level;
         textures::SpriteTexture $ritual_ui;
-        ::ritual::Blanket& $blanket;
         ::ritual::Engine $ritual_engine;
         ::ritual::CraftingState $craft_state;
 
@@ -65,6 +64,10 @@ namespace gui {
         void complete_combine();
         void update_selection_state();
         void update_level(GameLevel &level);
+
+        ::ritual::Blanket& blanket() {
+          return $level.world->get_the<::ritual::Blanket>();
+        }
     };
   }
 }