Yet more work on eng::malloc

luprex/core/cpp/world.hpp

@@ -24,7 +24,7 @@
 
 class World;
 
-class Tangible {
+class Tangible : public eng::opnew {
 private:
     friend class World;
 
@@ -90,7 +90,7 @@ public:
 
 using UniqueTangible = std::unique_ptr<Tangible>;
 
-class World {
+class World : public eng::opnew {
 public:
     using IdVector = util::IdVector;
     using TanVector = eng::vector<const Tangible*>;