Empty resource manager

Identifying design patterns in C++ game engine code

This is a hard design-patterns question that tests whether you can recognize structural and creational patterns in real production code. Game engines and resource-intensive systems frequently rely on the Gang of Four patterns to manage object lifecycles, pooling, and memory overhead—skills that matter deeply in performance-critical domains like graphics programming and low-latency systems.

The question asks you to examine working C++ code and name the pattern it implements. Success requires understanding not just the theoretical definition, but how each pattern manifests in actual code: the relationships between classes, the role of constructors and factories, and the intent behind the design. Interviewers use this to assess whether you can read unfamiliar codebases quickly and communicate design intent clearly.

• Creational patterns: Factory, Singleton, Object Pool
• Structural patterns: Proxy, Decorator, Adapter
• Behavioural patterns: Observer, Strategy, Command
• Resource management and RAII in C++