Проблема с неоднократной загрузкой и разгрузкой файлов PAK во время упаковки программы и времени выполнения. ⇐ C++

[Anonymous]

Извините, не поддерживает ли не поддерживать дубликатную загрузку и разгрузку файлов PAK.
После монтажа пакета PAK и создания статической сетки в файле на сцену, я удалил все ресурсы и установил PAK. Тем не менее, Windows не сразу очистила эту часть памяти. Примерно через 15-30 секунд, когда память была очищена, и я повторно выполнил логику загрузки, будет сообщена вся ошибка: < /p>

Код: Выделить всё

[2025.04.21-02.25.21:072][499]LogWindows: Error: === Critical error: ===
[2025.04.21-02.25.21:072][499]LogWindows: Error:
[2025.04.21-02.25.21:072][499]LogWindows: Error: Assertion failed: PakPrecacherSingleton [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/PakFile/Private/IPlatformFilePak.cpp] [Line: 1462]
[2025.04.21-02.25.21:072][499]LogWindows: Error:
[2025.04.21-02.25.21:072][499]LogWindows: Error:
[2025.04.21-02.25.21:072][499]LogWindows: Error:
[2025.04.21-02.25.21:072][499]LogWindows: Error: [Callstack] 0x00007ffd52cbfe7c KERNELBASE.dll!UnknownFunction []
[2025.04.21-02.25.21:072][499]LogWindows: Error: [Callstack] 0x00007ff6f7f34e76 DBJTest.exe!UnknownFunction []
[2025.04.21-02.25.21:072][499]LogWindows: Error: [Callstack] 0x00007ff6f7f38cb8 DBJTest.exe!UnknownFunction []
[2025.04.21-02.25.21:072][499]LogWindows: Error: [Callstack] 0x00007ff6f7c9063d DBJTest.exe!UnknownFunction []
[2025.04.21-02.25.21:072][499]LogWindows: Error: [Callstack] 0x00007ff6f7bf3415 DBJTest.exe!UnknownFunction []
< /code>
Вот мой код: < /p>
Версия двигателя: 4.27 < /p>
.h
#pragma once
#include "CoreMinimal.h"
#include "IPlatformFilePak.h"
#include "Engine/StaticMeshActor.h"
#include "GetPakAsset.generated.h"

UCLASS()
class DBJTEST_API AGetPakAsset : public AActor
{
GENERATED_BODY()

public:

virtual void BeginPlay() override;

TSharedPtr PakPlatform;
// TSharedFuture PakPlatform;
class IPlatformFile* OldPlatform;
TArray LoadStaticMeshActors;
TArray TestLoadStaticMesh;
TArray FoundObjects;
TArray LoadPath;
FString PakFileFullPath;
FString RootPath;
FString ContentPath;

private:
UFUNCTION(Exec, BlueprintCallable)
void GetAsset(FString InPakFullPath, FString PluginName);

void UnloadPakFile();

void GetAllFilesInPak(FPakFile& PakFile, const FString& InPath, TArray& OutFiles);

void PrintToScreen(const FString& Message, float Duration, FColor Color);

void Init();

};
< /code>
.cpp
#include "GetPakAsset.h"
#include "HAL/PlatformTime.h"
#include "IPlatformFilePak.h"
#include "Misc/DateTime.h"
#include "Engine/Engine.h"
#include "Engine/StaticMeshActor.h"
#include "PakManager.h"
// #include "memoryapi.h"
// #include "processthreadsapi.h"

void AGetPakAsset::BeginPlay()
{
Super::BeginPlay();

// OldPlatform = &FPlatformFileManager::Get().GetPlatformFile();
// PakPlatform = MakeShareable(new FPakPlatformFile());
// PakPlatform->Initialize(&FPlatformFileManager::Get().GetPlatformFile(), TEXT(""));
// PakFileFullPath = "";
Init();
}

void AGetPakAsset::Init()
{
OldPlatform = &FPlatformFileManager::Get().GetPlatformFile();

PakPlatform = MakeShareable(new FPakPlatformFile());
PakPlatform->Initialize(&FPlatformFileManager::Get().GetPlatformFile(), TEXT(""));
PakFileFullPath = "";
}

void AGetPakAsset::GetAsset(FString InPakFullPath, FString PluginName)
{
FDateTime LocalTime = FDateTime::Now();
FString LocalTimeString = LocalTime.ToString(TEXT("%Y-%m-%d %H:%M:%S"));
UE_LOG(LogTemp, Log, TEXT("Timestamp:%s"), *LocalTimeString);

Init();

FPlatformFileManager::Get().SetPlatformFile(*PakPlatform.Get());

PakFileFullPath = InPakFullPath;
TRefCountPtr TmpPak = new FPakFile(PakPlatform.Get(), *PakFileFullPath, false);
FString PakMountPoint = TmpPak->GetMountPoint();
#if WITH_EDITOR
RootPath = "/Game/";
#else
RootPath = "/"  + PluginName +"/";
#endif

ContentPath = PakMountPoint + "Content/";
FPackageName::RegisterMountPoint(RootPath, ContentPath);

int32 Pos;

Pos = PakMountPoint.Find("Content/");

FString NewMountPoint = PakMountPoint.RightChop(Pos);

TmpPak->SetMountPoint(*NewMountPoint);

if (PakPlatform->Mount(*PakFileFullPath, 1, *NewMountPoint))
{
TArray FoundFilenames;

GetAllFilesInPak(*TmpPak, *TmpPak->GetMountPoint(), FoundFilenames);

// Function method for obtaining resource paths in old versions
//TmpPak->FindFilesAtPath(FoundFilenames, *TmpPak->GetMountPoint(), true, false, false);
UE_LOG(LogTemp, Display, TEXT("Found asset num %d"), FoundFilenames.Num());

TArray MountPaks;
PakPlatform->GetMountedPakFilenames(MountPaks);
LoadPath = FoundFilenames;

if (FoundFilenames.Num() > 0)
{
for (FString& Filename : FoundFilenames)
{
if (Filename.EndsWith(TEXT(".uasset")))
{
FString NewFileName = Filename;
NewFileName.RemoveFromEnd(TEXT(".uasset"));
int32 LocalPos = NewFileName.Find("/Plugins");
NewFileName = NewFileName.RightChop(LocalPos + 8);
#if WITH_EDITOR
NewFileName = "/Game" + NewFileName;
NewFileName = NewFileName.Replace(TEXT("/Content/"), TEXT("/"));
NewFileName = NewFileName.Replace(*(PluginName + "/"), TEXT(""));
#else
NewFileName = NewFileName.Replace(TEXT("/Content/"), TEXT("/"));
#endif
// Handle possible double slashes "//"
NewFileName = NewFileName.Replace(TEXT("//"), TEXT("/"));
UE_LOG(LogTemp, Log, TEXT("Path to load object:%s"), *NewFileName);
// Save resource path to array
FoundObjects.AddUnique(FSoftObjectPath(NewFileName).ResolveObject());
// Loaded Object
UObject* LoadedObj;// = StaticLoadObject(UObject::StaticClass(), nullptr, *NewFileName);

if (StaticLoadObject(UObject::StaticClass(), nullptr, *NewFileName))
{
LoadedObj = StaticLoadObject(UObject::StaticClass(), nullptr, *NewFileName);
}
else
{
LoadedObj = nullptr;
}

if (!LoadedObj)
return;

UStaticMesh* SM = Cast(LoadedObj);
if (SM)
{
AStaticMeshActor* MeshActor = GetWorld()->SpawnActor(AStaticMeshActor::StaticClass(), FVector(0,0,460), FRotator(0,0,0) );
MeshActor->Rename(*SM->GetName());
MeshActor->SetMobility(EComponentMobility::Movable);
MeshActor->GetStaticMeshComponent()->SetStaticMesh(SM);
AGetPakAsset::PrintToScreen(TEXT("StaticMesh load successful!"), 5.0f, FColor::White);
TestLoadStaticMesh.Add(SM);
LoadStaticMeshActors.Add(MeshActor);
// UE_LOG(LogTemp, Log, TEXT("StaticMesh load successful!"));
}
}
}
}
}
FPlatformFileManager::Get().SetPlatformFile(*OldPlatform);
}

void AGetPakAsset::GetAllFilesInPak(FPakFile& PakFile, const FString& InPath, TArray& OutFiles)
{
// Retrieve files in the current path
TArray FoundFileNames;
PakFile.FindPrunedFilesAtPath(FoundFileNames, *InPath, true, false, false);

for (const FString& Filename : FoundFileNames)
{
// Add the current file to the list
OutFiles.Add(Filename);
}

// Retrieve subdirectories under the current path
TArray Subdirectories;
PakFile.FindPrunedFilesAtPath(Subdirectories, *InPath, false, true, false);  // Retrieve directory path, do not retrieve files

// Traverse subdirectories and recursively call VNet Files InPak
for (const FString& Subdirectory : Subdirectories)
{
// Recursive call to retrieve all files in the subdirectories
GetAllFilesInPak(PakFile, Subdirectory, OutFiles);
}
}

void AGetPakAsset::PrintToScreen(const FString& Message, float Duration = 5.0f, FColor Color = FColor::Blue)
{
if (GEngine)
{
GEngine->AddOnScreenDebugMessage(-1, Duration, Color, Message);
}
}

void AGetPakAsset::UnloadAsset()
{
if (PakPlatform.IsValid() && PakFileFullPath != TEXT(""))
{

for (int i = 0; i < LoadStaticMeshActors.Num(); i++)
{
if (!LoadStaticMeshActors[i])
continue;
LoadStaticMeshActors[i]->Destroy();
LoadStaticMeshActors[i]->ConditionalBeginDestroy(); // Forced release of resources
}
LoadStaticMeshActors.Empty();
PakFileFullPath.Empty();

// Ensure all references are released
FlushAsyncLoading();
CollectGarbage(GARBAGE_COLLECTION_KEEPFLAGS);

PakPlatform->Unmount(*PakFileFullPath);

PakPlatform.Reset();// Release PakPlatform resources
// Remove registered mount points
FPackageName::UnRegisterMountPoint(RootPath, ContentPath);

// Forcefully release PakPrecacher
// extern FPakPreca

}
}

void AGetPakAsset::UnloadPakFile()
{
// Stop all asynchronous records
FlushNetDormancy();
GEngine->ForceGarbageCollection(true);
// Uninstall the mounted Pak
if (PakPlatform.IsValid() && !PakFileFullPath.IsEmpty())
{
PakPlatform->Unmount(*PakFileFullPath);
}

// Release PakPlatform resources
PakPlatform.Reset();

// Remove registered mount points
FPackageName::UnRegisterMountPoint(RootPath, ContentPath);

// Restore original platform files
FPlatformFileManager::Get().SetPlatformFile(*OldPlatform);
}

Подробнее здесь: https://stackoverflow.com/questions/795 ... ackaging-a