GameFlow

Breakdown

1. EngineLoop

   1. Load Engine Plugins/Modules (Pre Init)

      1. EarliestPossible

      2. PostConfigInit

      3. PostSplashScreen

      4. PreEarlyLoadingScreen

      5. PreEarlyLoadingScreen

      6. PreDefault

      7. Default

      8. PostDeault

         1. Actors CDO are created & setup for replications

         2. StartupModule

   2. Init Engine

   3. Load Engine Plugins/Modules (Post Engine Init)

   4. Engine Start

      1. UGameInstance, UGameViewport, ULocalPlayer, WorldContext

         1. GameInstance Start

         2. Browse/Load Map

            1. PreloadMap Broadcast

            2. Destroy Previous World

            3. PreloadContent

            4. Create a new World

               1. Init World

               2. Create Game Mode (Spawn Gameplay Actors)

               3. Load Map

               4. InitializeActorsForPlay

                  1. Register Components to World

               5. GamaMode::InitGame

               6. PreInitializeComponents

                  1. Create GameState

                  2. Create a GameNetwork Manager

                  3. Init Game State

                  4. InitializeComponent

                     1. Activate Components

               7. Post InitializeComponent (Actors is fully initialized)

               8. GameMode::PreLogin (Remote)

               9. GameMode::Login()

                  1. Spawn Player Controller

                     1. Initialize

                     2. Spawn Player State

                  2. Associate UPlayer with its PlayerController

               10. GameMode::PostLogin

                   1. GameMode::RestartPlayer

                      1. Find PlayerStart

                      2. Spawn Pawn for PlayerController (SetPawn)

            5. World->BeginPlay

               1. GameMode::StartPlay

                  1. GameState::HandleBeginPlay

                     1. WorldSetting::NotifyBeginPlay

                        1. Actors->BeginPlay

                           1. Components->BeginPlay

      # GameInstance::OnStart

Flow Charts

References

[1]

Engine Loop

[2]

Game flow

[3]

Actor lifecycle