Question 1

In Unreal C++, a module's implementation class is required to derive from which interface?

Accepted Answer

Correct answer: IModuleInterface. Every module implementation class derives from IModuleInterface, which declares the StartupModule/ShutdownModule lifecycle hooks.

Question 2

When does Unreal call a module's StartupModule() function?

Accepted Answer

Correct answer: When the module loads, at its configured loading phase. StartupModule() runs once when FModuleManager loads the module, at the point determined by its LoadingPhase.

Question 3

A module's ShutdownModule() function is called at which point?

Accepted Answer

Correct answer: When the module is unloaded, such as at shutdown. ShutdownModule() runs when the module is unloaded, giving it a chance to release resources it acquired in StartupModule().

Question 4

A module's .cpp file contains this line after all other includes: What does this line accomplish?

Accepted Answer

Correct answer: Registers the module so it can be loaded by name. IMPLEMENT_MODULE exposes the module's implementation class so the engine's module system can find and load it by name.

Question 5

A freshly created C++ game project has exactly one module registered with IMPLEMENT_PRIMARY_GAME_MODULE instead of IMPLEMENT_MODULE. What does this macro identify?

Accepted Answer

Correct answer: The project's primary game module. IMPLEMENT_PRIMARY_GAME_MODULE marks the project's primary game module, the one matching the .uproject file's main module entry.

Question 6

A module in a .uplugin file declares LoadingPhase "Default" without further customization. When does it load relative to most other modules?

Accepted Answer

Correct answer: At the standard startup point for gameplay modules. Default is the loading point most gameplay modules use during startup; it is suitable unless a module needs to load earlier.

Game Development Ue Modules Build Packaging Interview Questions

Sample questions

By specialization

By seniority

Other fields