94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "AsyncAction_ExperienceReady.h"
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#include "Engine/AssetManager.h"
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#include "Engine/StreamableManager.h"
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#include "Engine/Engine.h"
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#include "Engine/GameInstance.h"
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#include "TimerManager.h"
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#include "GameModes/LyraExperienceManagerComponent.h"
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UAsyncAction_ExperienceReady::UAsyncAction_ExperienceReady(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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}
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UAsyncAction_ExperienceReady* UAsyncAction_ExperienceReady::WaitForExperienceReady(UObject* InWorldContextObject)
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{
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UAsyncAction_ExperienceReady* Action = nullptr;
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if (UWorld* World = GEngine->GetWorldFromContextObject(InWorldContextObject, EGetWorldErrorMode::LogAndReturnNull))
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{
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Action = NewObject<UAsyncAction_ExperienceReady>();
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Action->WorldPtr = World;
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Action->RegisterWithGameInstance(World);
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}
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return Action;
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}
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void UAsyncAction_ExperienceReady::Activate()
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{
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if (UWorld* World = WorldPtr.Get())
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{
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if (AGameStateBase* GameState = World->GetGameState())
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{
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Step2_ListenToExperienceLoading(GameState);
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}
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else
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{
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World->GameStateSetEvent.AddUObject(this, &ThisClass::Step1_HandleGameStateSet);
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}
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}
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else
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{
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// No world so we'll never finish naturally
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SetReadyToDestroy();
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}
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}
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void UAsyncAction_ExperienceReady::Step1_HandleGameStateSet(AGameStateBase* GameState)
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{
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if (UWorld* World = WorldPtr.Get())
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{
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World->GameStateSetEvent.RemoveAll(this);
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}
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Step2_ListenToExperienceLoading(GameState);
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}
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void UAsyncAction_ExperienceReady::Step2_ListenToExperienceLoading(AGameStateBase* GameState)
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{
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check(GameState);
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ULyraExperienceManagerComponent* ExperienceComponent = GameState->FindComponentByClass<ULyraExperienceManagerComponent>();
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check(ExperienceComponent);
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if (ExperienceComponent->IsExperienceLoaded())
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{
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UWorld* World = GameState->GetWorld();
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check(World);
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// The experience happened to be already loaded, but still delay a frame to
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// make sure people don't write stuff that relies on this always being true
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//@TODO: Consider not delaying for dynamically spawned stuff / any time after the loading screen has dropped?
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//@TODO: Maybe just inject a random 0-1s delay in the experience load itself?
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World->GetTimerManager().SetTimerForNextTick(FTimerDelegate::CreateUObject(this, &ThisClass::Step4_BroadcastReady));
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}
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else
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{
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ExperienceComponent->CallOrRegister_OnExperienceLoaded(FOnLyraExperienceLoaded::FDelegate::CreateUObject(this, &ThisClass::Step3_HandleExperienceLoaded));
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}
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}
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void UAsyncAction_ExperienceReady::Step3_HandleExperienceLoaded(const ULyraExperienceDefinition* CurrentExperience)
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{
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Step4_BroadcastReady();
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}
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void UAsyncAction_ExperienceReady::Step4_BroadcastReady()
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{
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OnReady.Broadcast();
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SetReadyToDestroy();
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}
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