Mostly does everything I need, minus the ritual description. That'll have to probably be a separate generator. Next, rewrite this crap.

ritual_ui.cpp

@@ -78,6 +78,26 @@ namespace gui {
     auto& blanket = $level.world->get_the<ritual::Blanket>();
     blanket.select(item_id);
 
+    attempt_combine();
+
+    // display the possible outcome here
+    if($craft_state.is_combined()) {
+      auto ritual = $engine.finalize($craft_state);
+      using enum ritual::Element;
+      switch(ritual.element) {
+        case FIRE:
+          $gui.show_sprite("result_image", "broken_yoyo-64");
+          break;
+        case LIGHTNING:
+          $gui.show_sprite("result_image", "pocket_watch-64");
+          break;
+        default:
+          $gui.show_sprite("result_image", "severed_finger-64");
+      }
+    } else {
+      $gui.close<Sprite>("result_image");
+    }
+
     update_items();
   }
 
@@ -97,12 +117,8 @@ namespace gui {
     update_items();
   }
 
-  void RitualUI::combine_clicked(DinkyECS::Entity ent) {
-    // auto cell = $gui.cell_for(ent);
+  void RitualUI::attempt_combine() {
     auto& blanket = $level.world->get_the<ritual::Blanket>();
-    auto& bs = $gui.get<Sprite>(ent);
-    bs.sprite->setColor({200, 0, 0});
-
     $craft_state = $engine.start();
 
     for(auto [ent, yes] : blanket.selected) {
@@ -111,6 +127,14 @@ namespace gui {
 
     // finalize here ritual here
     $engine.plan($craft_state);
+  }
+
+  void RitualUI::combine_clicked(DinkyECS::Entity ent) {
+    // auto cell = $gui.cell_for(ent);
+    auto& bs = $gui.get<Sprite>(ent);
+    bs.sprite->setColor({200, 0, 0});
+
+    attempt_combine();
 
     if($craft_state.is_combined()) {
       // add it to the belt
@@ -141,10 +165,10 @@ namespace gui {
 
     for(auto& [item_id, item] : blanket.contents) {
       auto button = $gui.entity("inv_slot", i++);
-      auto selector = $gui.entity("craft", j++);
       std::string sprite_name = fmt::format("{}-64", item);
 
       if(blanket.is_selected(item_id)) {
+        auto selector = $gui.entity("craft", j++);
         $gui.set_init<Sprite>(selector, {sprite_name});
       } else if($gui.has<Clickable>(button)) {
         $gui.set_init<Sprite>(button, {sprite_name});

ritual_ui.hpp

@@ -35,6 +35,7 @@ namespace gui {
       void render(sf::RenderWindow &window);
       void update();
 
+      void attempt_combine();
       void update_items();
       void combine_clicked(DinkyECS::Entity ent);
       void inv_slot_clicked(DinkyECS::Entity ent, DinkyECS::Entity item_id);