Started working on the loot system which will eventually become the inventory/improved collision system.

dinkyecs.hpp

@@ -74,6 +74,13 @@ namespace DinkyECS {
         return std::any_cast<Comp&>(res);
       }
 
+    template <typename Comp>
+      bool has(Entity ent) {
+        EntityMap &map = entity_map_for<Comp>();
+        // use .at for bounds checking
+        return map.contains(ent);
+      }
+
     template<typename Comp>
       void query(std::function<void(const Entity&, Comp&)> cb) {
         EntityMap &map = entity_map_for<Comp>();