【UE4 C++】简单获取名称、状态、时间、帧数、路径与FPaths

基于UKismetSystemLibrary

获取各类名称

// Returns the actual object name.
UFUNCTION(BlueprintPure, Category = "Utilities")
static FString GetObjectName(const UObject* Object);// Returns the full path to the specified object.
UFUNCTION(BlueprintPure, Category="Utilities")
static FString GetPathName(const UObject* Object);// Returns the display name (or actor label), for displaying as a debugging aid.
// Note: In editor builds, this is the actor label.  In non-editor builds, this is the actual object name.  This function should not be used to uniquely identify actors!
// It is not localized and should not be used for display to an end user of a game.
UFUNCTION(BlueprintPure, Category="Utilities")
static FString GetDisplayName(const UObject* Object);// Returns the display name of a class
UFUNCTION(BlueprintPure, Category = "Utilities", meta = (DisplayName = "Get Display Name"))
static FString GetClassDisplayName(UClass* Class);// Engine build number, for displaying to end users.
UFUNCTION(BlueprintPure, Category="Development", meta=(BlueprintThreadSafe))
static FString GetEngineVersion();/** Get the name of the current game  */
UFUNCTION(BlueprintPure, Category="Game", meta=(BlueprintThreadSafe))
static FString GetGameName();/** Get the current user name from the OS */
UFUNCTION(BlueprintPure, Category="Utilities|Platform")
static FString GetPlatformUserName();/** Returns the platform specific unique device id */
UFUNCTION(BlueprintPure, Category="Utilities|Platform", meta = (DeprecatedFunction, DeprecationMessage = "Use GetDeviceId instead"))
static FString GetUniqueDeviceId();/** Returns the platform specific unique device id */
UFUNCTION(BlueprintPure, Category="Utilities|Platform")
static FString GetDeviceId();

获取各种状态

/** Returns whether the world this object is in is the host or not */
UFUNCTION(BlueprintPure, Category="Networking", meta=(WorldContext="WorldContextObject") )
static bool IsServer(const UObject* WorldContextObject);/** Returns whether this is running on a dedicated server */
UFUNCTION(BlueprintPure, Category="Networking", meta=(WorldContext="WorldContextObject"))
static bool IsDedicatedServer(const UObject* WorldContextObject);/** Returns whether this game instance is stand alone (no networking). */
UFUNCTION(BlueprintPure, Category="Networking", meta=(WorldContext="WorldContextObject"))
static bool IsStandalone(const UObject* WorldContextObject);/** Returns whether we're currently running in split screen (more than one local player). */
UFUNCTION(BlueprintPure, Category = "Utilities", meta = (WorldContext = "WorldContextObject"))
static bool IsSplitScreen(const UObject* WorldContextObject);/** Returns whether this is a build that is packaged for distribution */
UFUNCTION(BlueprintPure, Category="Development", meta=(BlueprintThreadSafe))
static bool IsPackagedForDistribution();

获取时间

/** * Get the current game time, in seconds. This stops when the game is paused and is affected by slomo. * * @param WorldContextObject World context*/
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject") )
static float GetGameTimeInSeconds(const UObject* WorldContextObject);/** Returns the value of GFrameCounter, a running count of the number of frames that have occurred. */
UFUNCTION(BlueprintPure, Category = "Utilities")
static int64 GetFrameCount();

获取常见路径

// Returns the full system path to a UObject
// If given a non-asset UObject, it will return an empty string
UFUNCTION(BlueprintPure, Category = "Utilities")
static FString GetSystemPath(const UObject* Object);/** Get the directory of the current project */
UFUNCTION(BlueprintPure, Category="Utilities|Paths", meta=(BlueprintThreadSafe))
static FString GetProjectDirectory();/** Get the content directory of the current project */
UFUNCTION(BlueprintPure, Category="Utilities|Paths", meta=(BlueprintThreadSafe))
static FString GetProjectContentDirectory();/** Get the saved directory of the current project */
UFUNCTION(BlueprintPure, Category="Utilities|Paths", meta=(BlueprintThreadSafe))
static FString GetProjectSavedDirectory();/** Get the current user dir from the OS */
UFUNCTION(BlueprintPure, Category = "Utilities|Platform")
static FString GetPlatformUserDir();

路径转换

/* Converts passed in filename to use a relative path */
UFUNCTION(BlueprintPure, Category="Utilities|Paths")
static FString ConvertToRelativePath(const FString& Filename);/* Converts passed in filename to use a absolute path */
UFUNCTION(BlueprintPure, Category="Utilities|Paths")
static FString ConvertToAbsolutePath(const FString& Filename);/* Convert all / and \ to TEXT("/") */
UFUNCTION(BlueprintPure, Category="Utilities|Paths", meta=(BlueprintThreadSafe))
static FString NormalizeFilename(const FString& InFilename);

FPaths —— 更全的路径

/**
* Path helpers for retrieving game dir, engine dir, etc.
*/
class CORE_API FPaths
{
public:/*** Should the "saved" directory structures be rooted in the user dir or relative to the "engine/game" */static bool ShouldSaveToUserDir();/*** Returns the directory the application was launched from (useful for commandline utilities)*/static FString LaunchDir();/** * Returns the base directory of the "core" engine that can be shared across* several games or across games & mods. Shaders and base localization files* e.g. reside in the engine directory.** @return engine directory*/static FString EngineDir();/*** Returns the root directory for user-specific engine files. Always writable.** @return root user directory*/static FString EngineUserDir();/*** Returns the root directory for user-specific engine files which can be shared between versions. Always writable.** @return root user directory*/static FString EngineVersionAgnosticUserDir();/** * Returns the content directory of the "core" engine that can be shared across* several games or across games & mods. ** @return engine content directory*/static FString EngineContentDir();/*** Returns the directory the root configuration files are located.** @return root config directory*/static FString EngineConfigDir();/*** Returns the Editor Settings directory of the engine** @return Editor Settings directory.*/static FString EngineEditorSettingsDir();/*** Returns the intermediate directory of the engine** @return content directory*/static FString EngineIntermediateDir();/*** Returns the saved directory of the engine** @return Saved directory.*/static FString EngineSavedDir();/*** Returns the plugins directory of the engine** @return Plugins directory.*/static FString EnginePluginsDir();/*** Returns the directory for default Editor UI Layout files of the engine* @return Directory for default Editor UI Layout files.*/static FString EngineDefaultLayoutDir();/*** Returns the directory for project Editor UI Layout files of the engine* @return Directory for project Editor UI Layout files.*/static FString EngineProjectLayoutDir();/*** Returns the directory for user-generated Editor UI Layout files of the engine* @return Directory for user-generated Editor UI Layout files.*/static FString EngineUserLayoutDir();/** * Returns the base directory enterprise directory.** @return enterprise directory*/static FString EnterpriseDir();/*** Returns the enterprise plugins directory** @return Plugins directory.*/static FString EnterprisePluginsDir();/*** Returns the enterprise FeaturePack directory** @return FeaturePack directory.*/static FString EnterpriseFeaturePackDir();/*** Returns the directory where engine platform extensions reside** @return engine platform extensions directory*/static FString EnginePlatformExtensionsDir();/*** Returns the directory where the project's platform extensions reside** @return project platform extensions directory*/static FString ProjectPlatformExtensionsDir();/*** Returns platform and restricted extensions that are present and valid (for platforms, it uses FDataDrivePlatformInfo to determine valid platforms, it doesn't just use what's present)** @return BaseDir and usable extension directories under BaseDir (either Engine or Project)*/static TArray<FString> GetExtensionDirs(const FString& BaseDir, const FString& SubDir=FString());/*** Returns the root directory of the engine directory tree** @return Root directory.*/static FString RootDir();/*** Returns the base directory of the current project by looking at FApp::GetProjectName().* This is usually a subdirectory of the installation* root directory and can be overridden on the command line to allow self* contained mod support.** @return base directory*/static FString ProjectDir();/*** Returns the root directory for user-specific game files.** @return game user directory*/static FString ProjectUserDir();/*** Returns the content directory of the current game by looking at FApp::GetProjectName().** @return content directory*/static FString ProjectContentDir();/*** Returns the directory the root configuration files are located.** @return root config directory*/static FString ProjectConfigDir();/*** Returns the saved directory of the current game by looking at FApp::GetProjectName().** @return saved directory*/static const FString& ProjectSavedDir();/*** Returns the intermediate directory of the current game by looking at FApp::GetProjectName().** @return intermediate directory*/static FString ProjectIntermediateDir();static FString ShaderWorkingDir();/*** Returns the plugins directory of the current game by looking at FApp::GetProjectName().** @return plugins directory*/static FString ProjectPluginsDir();/*** Returns the mods directory of the current project by looking at FApp::GetProjectName().** @return mods directory*/static FString ProjectModsDir();/** Returns true if a writable directory for downloaded data that persists across play sessions is available*/static bool HasProjectPersistentDownloadDir();/** Returns the writable directory for downloaded data that persists across play sessions.*/static FString ProjectPersistentDownloadDir();/*** Returns the directory the engine uses to look for the source leaf ini files. This* can't be an .ini variable for obvious reasons.** @return source config directory*/static FString SourceConfigDir();/*** Returns the directory the engine saves generated config files.** @return config directory*/static FString GeneratedConfigDir();/*** Returns the directory the engine stores sandbox output** @return sandbox directory*/static FString SandboxesDir();/*** Returns the directory the engine uses to output profiling files.** @return log directory*/static FString ProfilingDir();/*** Returns the directory the engine uses to output screenshot files.** @return screenshot directory*/static FString ScreenShotDir();/*** Returns the directory the engine uses to output BugIt files.** @return screenshot directory*/static FString BugItDir();/*** Returns the directory the engine uses to output user requested video capture files.** @return Video capture directory*/static FString VideoCaptureDir();/*** Returns the directory the engine uses to output logs. This currently can't * be an .ini setting as the game starts logging before it can read from .ini* files.** @return log directory*/static FString ProjectLogDir();/** Returns the directory for automation save files */static FString AutomationDir();/** Returns the directory for automation save files that are meant to be deleted every run */static FString AutomationTransientDir();/** Returns the directory for results of automation tests. May be deleted every run. */static FString AutomationReportsDir();/** Returns the directory for automation log files */static FString AutomationLogDir();/** Returns the directory for local files used in cloud emulation or support */static FString CloudDir();/** Returns the directory that contains subfolders for developer-specific content */static FString GameDevelopersDir();/** Returns The folder name for the developer-specific directory for the current user */static FString GameUserDeveloperFolderName();/** Returns The directory that contains developer-specific content for the current user */static FString GameUserDeveloperDir();/** Returns the directory for temp files used for diffing */static FString DiffDir();/** * Returns a list of engine-specific localization paths*/static const TArray<FString>& GetEngineLocalizationPaths();/** * Returns a list of editor-specific localization paths*/static const TArray<FString>& GetEditorLocalizationPaths();/** * Returns a list of property name localization paths*/static const TArray<FString>& GetPropertyNameLocalizationPaths();/** * Returns a list of tool tip localization paths*/static const TArray<FString>& GetToolTipLocalizationPaths();/** * Returns a list of game-specific localization paths*/static const TArray<FString>& GetGameLocalizationPaths();/*** Get the name of the platform-specific localization sub-folder*/static FString GetPlatformLocalizationFolderName();/** * Returns a list of restricted/internal folder names (without any slashes) which may be tested against full paths to determine if a path is restricted or not.*/static const TArray<FString>& GetRestrictedFolderNames();/** * Determines if supplied path uses a restricted/internal subdirectory.    Note that slashes are normalized and character case is ignored for the comparison.*/static bool IsRestrictedPath(const FString& InPath);/*** Returns the saved directory that is not game specific. This is usually the same as* EngineSavedDir().** @return saved directory*/static FString GameAgnosticSavedDir();/** Returns the directory where engine source code files are kept */static FString EngineSourceDir();/** Returns the directory where game source code files are kept */static FString GameSourceDir();/** Returns the directory where feature packs are kept */static FString FeaturePackDir();/*** Checks whether the path to the project file, if any, is set.** @return true if the path is set, false otherwise.*/static bool IsProjectFilePathSet();/*** Gets the path to the project file.** @return Project file path.*/static FString GetProjectFilePath();/*** Sets the path to the project file.** @param NewGameProjectFilePath - The project file path to set.*/static void SetProjectFilePath( const FString& NewGameProjectFilePath );/*** Gets the extension for this filename.** @param    bIncludeDot     if true, includes the leading dot in the result** @return  the extension of this filename, or an empty string if the filename doesn't have an extension.*/static FString GetExtension( const FString& InPath, bool bIncludeDot=false );// Returns the filename (with extension), minus any path information.static FString GetCleanFilename(const FString& InPath);// Returns the filename (with extension), minus any path information.static FString GetCleanFilename(FString&& InPath);// Returns the same thing as GetCleanFilename, but without the extensionstatic FString GetBaseFilename(const FString& InPath, bool bRemovePath=true );// Returns the same thing as GetCleanFilename, but without the extensionstatic FString GetBaseFilename(FString&& InPath, bool bRemovePath = true);// Returns the path in front of the filenamestatic FString GetPath(const FString& InPath);// Returns the path in front of the filenamestatic FString GetPath(FString&& InPath);// Returns the leaf in the pathstatic FString GetPathLeaf(const FString& InPath);// Returns the leaf in the pathstatic FString GetPathLeaf(FString&& InPath);/** Changes the extension of the given filename (does nothing if the file has no extension) */static FString ChangeExtension(const FString& InPath, const FString& InNewExtension);/** Sets the extension of the given filename (like ChangeExtension, but also applies the extension if the file doesn't have one) */static FString SetExtension(const FString& InPath, const FString& InNewExtension);/** Returns true if this file was found, false otherwise */static bool FileExists(const FString& InPath);/** Returns true if this directory was found, false otherwise */static bool DirectoryExists(const FString& InPath);/** Returns true if this path represents a root drive or volume */static bool IsDrive(const FString& InPath);/** Returns true if this path is relative to another path */static bool IsRelative(const FString& InPath);/** Convert all / and \ to TEXT("/") */static void NormalizeFilename(FString& InPath);/*** Checks if two paths are the same.** @param PathA First path to check.* @param PathB Second path to check.** @returns True if both paths are the same. False otherwise.*/static bool IsSamePath(const FString& PathA, const FString& PathB);/** Determines if a path is under a given directory */static bool IsUnderDirectory(const FString& InPath, const FString& InDirectory);/** Normalize all / and \ to TEXT("/") and remove any trailing TEXT("/") if the character before that is not a TEXT("/") or a colon */static void NormalizeDirectoryName(FString& InPath);/*** Takes a fully pathed string and eliminates relative pathing (eg: annihilates ".." with the adjacent directory).* Assumes all slashes have been converted to TEXT('/').* For example, takes the string:*    BaseDirectory/SomeDirectory/../SomeOtherDirectory/Filename.ext* and converts it to:*    BaseDirectory/SomeOtherDirectory/Filename.ext*/static bool CollapseRelativeDirectories(FString& InPath);/*** Removes duplicate slashes in paths.* Assumes all slashes have been converted to TEXT('/').* For example, takes the string:*  BaseDirectory/SomeDirectory//SomeOtherDirectoryFilename.ext* and converts it to:*   BaseDirectory/SomeDirectory/SomeOtherDirectory/Filename.ext*/static void RemoveDuplicateSlashes(FString& InPath);/*** Make fully standard "Unreal" pathname:*    - Normalizes path separators [NormalizeFilename]*    - Removes extraneous separators  [NormalizeDirectoryName, as well removing adjacent separators]*    - Collapses internal ..'s*    - Makes relative to Engine\Binaries\<Platform> (will ALWAYS start with ..\..\..)*/static FString CreateStandardFilename(const FString& InPath);static void MakeStandardFilename(FString& InPath);/** Takes an "Unreal" pathname and converts it to a platform filename. */static void MakePlatformFilename(FString& InPath);/** * Assuming both paths (or filenames) are relative to the same base dir, modifies InPath to be relative to InRelativeTo** @param InPath Path to change to be relative to InRelativeTo* @param InRelativeTo Path to use as the new relative base* @returns true if InPath was changed to be relative*/static bool MakePathRelativeTo( FString& InPath, const TCHAR* InRelativeTo );/*** Converts a relative path name to a fully qualified name relative to the process BaseDir().*/static FString ConvertRelativePathToFull(const FString& InPath);/*** Converts a relative path name to a fully qualified name relative to the process BaseDir().*/static FString ConvertRelativePathToFull(FString&& InPath);/*** Converts a relative path name to a fully qualified name relative to the specified BasePath.*/static FString ConvertRelativePathToFull(const FString& BasePath, const FString& InPath);/*** Converts a relative path name to a fully qualified name relative to the specified BasePath.*/static FString ConvertRelativePathToFull(const FString& BasePath, FString&& InPath);/*** Converts a relative path name to a fully qualified name relative to the specified BasePath.*/static FString ConvertRelativePathToFull(FString&& BasePath, const FString& InPath);/*** Converts a relative path name to a fully qualified name relative to the specified BasePath.*/static FString ConvertRelativePathToFull(FString&& BasePath, FString&& InPath);/*** Converts a normal path to a sandbox path (in Saved/Sandboxes).** @param InSandboxName The name of the sandbox.*/static FString ConvertToSandboxPath( const FString& InPath, const TCHAR* InSandboxName );/*** Converts a sandbox (in Saved/Sandboxes) path to a normal path.** @param InSandboxName The name of the sandbox.*/static FString ConvertFromSandboxPath( const FString& InPath, const TCHAR* InSandboxName );/** * Creates a temporary filename with the specified prefix.** @param Path The file pathname.* @param Prefix The file prefix.* @param Extension File extension ('.' required).*/static FString CreateTempFilename( const TCHAR* Path, const TCHAR* Prefix = TEXT(""), const TCHAR* Extension = TEXT(".tmp") );/*** Returns a string containing all invalid characters as dictated by the operating system*/static FString GetInvalidFileSystemChars();/***  Returns a string that is safe to use as a filename because all items in*    GetInvalidFileSystemChars() are removed*/static FString MakeValidFileName(const FString& InString, const TCHAR InReplacementChar=0);/** * Validates that the parts that make up the path contain no invalid characters as dictated by the operating system* Note that this is a different set of restrictions to those imposed by FPackageName** @param InPath - path to validate* @param OutReason - optional parameter to fill with the failure reason*/static bool ValidatePath( const FString& InPath, FText* OutReason = nullptr );/*** Parses a fully qualified or relative filename into its components (filename, path, extension).** @param   Path        [out] receives the value of the path portion of the input string* @param   Filename    [out] receives the value of the filename portion of the input string* @param   Extension   [out] receives the value of the extension portion of the input string*/static void Split( const FString& InPath, FString& PathPart, FString& FilenamePart, FString& ExtensionPart );/** Gets the relative path to get from BaseDir to RootDirectory  */static const FString& GetRelativePathToRoot();template <typename... PathTypes>FORCEINLINE static FString Combine(PathTypes&&... InPaths){const TCHAR* Paths[] = { GetTCharPtr(Forward<PathTypes>(InPaths))... };FString Out;CombineInternal(Out, Paths, UE_ARRAY_COUNT(Paths));return Out;}/*** Frees any memory retained by FPaths.*/static void TearDown();protected:static void CombineInternal(FString& OutPath, const TCHAR** Paths, int32 NumPaths);private:struct FStaticData;FORCEINLINE static const TCHAR* GetTCharPtr(const TCHAR* Ptr){return Ptr;}FORCEINLINE static const TCHAR* GetTCharPtr(const FString& Str){return *Str;}/** Returns, if any, the value of the -userdir command line argument. This can be used to sandbox artifacts to a desired location */static const FString& CustomUserDirArgument();/** Returns, if any, the value of the -shaderworkingdir command line argument. This can be used to sandbox shader working files to a desired location */static const FString& CustomShaderDirArgument();
};

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【UE4 C++】简单获取名称、状态、时间、帧数、路径与FPaths

基于UKismetSystemLibrary

获取各类名称

获取各种状态

获取时间

获取常见路径

FPaths —— 更全的路径

【UE4 C++】简单获取名称、状态、时间、帧数、路径与FPaths相关推荐

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