Have a basic little click sound going, but hover events will need some work. I'm doing those on every mouse move.

guecs.cpp

@@ -1,5 +1,6 @@
 #include "guecs.hpp"
 #include "shaders.hpp"
+#include "sound.hpp"
 
 namespace guecs {
 
@@ -58,6 +59,14 @@ namespace guecs {
     bar.init(cell);
   }
 
+  void Sound::play(bool hover) {
+    if(hover) {
+      // BUG: need to sort out how to make hover a one shot thing
+      // sound::play(on_hover);
+    } else {
+      sound::play(on_click);
+    }
+  }
 
   void Background::init() {
     sf::Vector2f size{float(w), float(h)};
@@ -232,6 +241,12 @@ namespace guecs {
           effect.run();
         }
 
+        if($world.has<Sound>(ent)) {
+          auto& sound = $world.get<Sound>(ent);
+          sound.play(hover);
+        }
+
+
         if(hover) return; // kinda gross
 
         if(auto action_data = get_if<ActionData>(ent)) {