Picking up gold doesn't add it to your inventory.

systems.cpp

@@ -137,14 +137,14 @@ void System::collision(DinkyECS::World &world, Player &player) {
         auto& item_pos = world.get<Position>(entity);
         auto& inventory = world.get<Inventory>(player.entity);
 
-        inventory.add(item);
-
         if(world.has<LightSource>(entity)) {
+          inventory.add(item);
           auto &new_light = world.get<LightSource>(entity);
           world.set<LightSource>(player.entity, new_light);
           inventory.light = new_light;
           world.remove<LightSource>(entity);
         } else if(world.has<Weapon>(entity)) {
+          inventory.add(item);
           auto &weapon = world.get<Weapon>(entity);
           player_combat.damage = weapon.damage;
           world.remove<Weapon>(entity);