File

    Type to handle file reading and writing operations.

    File type. This is used to permanently store data into the user device’s file system and to read from it. This can be used to store game save data or player configuration files, for example.

    Here’s a sample on how to write and read from a file:

    In the example above, the file will be saved in the user data folder as specified in the documentation.

    Note: To access project resources once exported, it is recommended to use ResourceLoader instead of the API, as some files are converted to engine-specific formats and their original source files might not be present in the exported PCK package.

    Note: Files are automatically closed only if the process exits “normally” (such as by clicking the window manager’s close button or pressing Alt + F4). If you stop the project execution by pressing F8 while the project is running, the file won’t be closed as the game process will be killed. You can work around this by calling at regular intervals.

    Tutorials

    Methods

    enum ModeFlags:

    • READ = 1 —- Opens the file for read operations. The cursor is positioned at the beginning of the file.

    • WRITE = 2 —- Opens the file for write operations. The file is created if it does not exist, and truncated if it does.

    • READ_WRITE = 3 —- Opens the file for read and write operations. Does not truncate the file. The cursor is positioned at the beginning of the file.

    • WRITE_READ = 7 —- Opens the file for read and write operations. The file is created if it does not exist, and truncated if it does. The cursor is positioned at the beginning of the file.

    enum CompressionMode:

    • COMPRESSION_FASTLZ = 0 —- Uses the FastLZ compression method.

    • COMPRESSION_DEFLATE = 1 —- Uses the compression method.

    • COMPRESSION_ZSTD = 2 —- Uses the Zstandard compression method.

    • COMPRESSION_GZIP = 3 —- Uses the compression method.

    Property Descriptions

    • endian_swap

    If true, the file is read with big-endian endianness. If false, the file is read with little-endian endianness. If in doubt, leave this to false as most files are written with little-endian endianness.

    Note: is only about the file format, not the CPU type. The CPU endianness doesn’t affect the default endianness for files written.

    Note: This is always reset to false whenever you open the file. Therefore, you must set endian_swap after opening the file, not before.

    • void close ( )

    Closes the currently opened file and prevents subsequent read/write operations. Use flush to persist the data to disk without closing the file.

    • eof_reached ( ) const

    Returns true if the file cursor has already read past the end of the file.

    Note: eof_reached() == false cannot be used to check whether there is more data available. To loop while there is more data available, use:

    Returns true if the file exists in the given path.

    Note: Many resources types are imported (e.g. textures or sound files), and their source asset will not be included in the exported game, as only the imported version is used. See ResourceLoader.exists for an alternative approach that takes resource remapping into account.

    • void flush ( )

    Note: Only call when you actually need it. Otherwise, it will decrease performance due to constant disk writes.

    • int get_16 ( ) const

    Returns the next 16 bits from the file as an integer. See for details on what values can be stored and retrieved this way.

    • int get_32 ( ) const

    Returns the next 32 bits from the file as an integer. See for details on what values can be stored and retrieved this way.

    • int get_64 ( ) const

    Returns the next 64 bits from the file as an integer. See for details on what values can be stored and retrieved this way.

    • int get_8 ( ) const

    Returns the next 8 bits from the file as an integer. See for details on what values can be stored and retrieved this way.

    Returns the whole file as a .

    Text is interpreted as being UTF-8 encoded.

    Returns next len bytes of the file as a PoolByteArray.

    • get_csv_line ( String delim=”,” ) const

    Returns the next value of the file in CSV (Comma-Separated Values) format. You can pass a different delimiter delim to use other than the default (comma). This delimiter must be one-character long, and cannot be a double quotation mark.

    Text is interpreted as being UTF-8 encoded. Text values must be enclosed in double quotes if they include the delimiter character. Double quotes within a text value can be escaped by doubling their occurrence.

    For example, the following CSV lines are valid and will be properly parsed as two strings each:

    Note how the second line can omit the enclosing quotes as it does not include the delimiter. However it could very well use quotes, it was only written without for demonstration purposes. The third line must use "" for each quotation mark that needs to be interpreted as such instead of the end of a text value.

    • get_double ( ) const

    Returns the next 64 bits from the file as a floating-point number.

    • Error get_error ( ) const

    Returns the last error that happened when trying to perform operations. Compare with the ERR_FILE_* constants from .

    • float get_float ( ) const

    Returns the next 32 bits from the file as a floating-point number.

    • get_len ( ) const

    Returns the size of the file in bytes.

    Returns the next line of the file as a .

    Text is interpreted as being UTF-8 encoded.

    • String get_md5 ( path ) const

    Returns an MD5 String representing the file at the given path or an empty String on failure.

    • get_modified_time ( String file ) const

    Returns the last time the file was modified in unix timestamp format or returns a “ERROR IN file“. This unix timestamp can be converted to datetime by using OS.get_datetime_from_unix_time.

    • get_pascal_string ( )

    Returns a String saved in Pascal format from the file.

    Text is interpreted as being UTF-8 encoded.

    • get_path ( ) const

    Returns the path as a String for the current open file.

    • get_path_absolute ( ) const

    Returns the absolute path as a String for the current open file.

    • get_position ( ) const

    Returns the file cursor’s position.

    • float get_real ( ) const

    Returns the next bits from the file as a floating-point number.

    Returns a SHA-256 representing the file at the given path or an empty String on failure.

    • get_var ( bool allow_objects=false ) const

    Returns the next value from the file. If allow_objects is true, decoding objects is allowed.

    Warning: Deserialized objects can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats such as remote code execution.

    • bool is_open ( ) const

    Returns true if the file is currently opened.

    Opens the file for writing or reading, depending on the flags.

    • Error open_compressed ( path, ModeFlags mode_flags, compression_mode=0 )

    Opens a compressed file for reading or writing.

    Note: open_compressed can only read files that were saved by Godot, not third-party compression formats. See for a workaround.

    Opens an encrypted file in write or read mode. You need to pass a binary key to encrypt/decrypt it.

    Note: The provided key must be 32 bytes long.

    Opens an encrypted file in write or read mode. You need to pass a password to encrypt/decrypt it.

    • void seek ( int position )

    Changes the file reading/writing cursor to the specified position (in bytes from the beginning of the file).

    • void seek_end ( position=0 )

    Changes the file reading/writing cursor to the specified position (in bytes from the end of the file).

    Note: This is an offset, so you should use negative numbers or the cursor will be at the end of the file.

    • void store_16 ( int value )

    Stores an integer as 16 bits in the file.

    Note: The value should lie in the interval [0, 2^16 - 1]. Any other value will overflow and wrap around.

    To store a signed integer, use or store a signed integer from the interval [-2^15, 2^15 - 1] (i.e. keeping one bit for the signedness) and compute its sign manually when reading. For example:

    • void store_32 ( int value )

    Stores an integer as 32 bits in the file.

    Note: The value should lie in the interval . Any other value will overflow and wrap around.

    To store a signed integer, use , or convert it manually (see store_16 for an example).

    • void store_64 ( value )

    Stores an integer as 64 bits in the file.

    Note: The value must lie in the interval [-2^63, 2^63 - 1] (i.e. be a valid int value).

    • void store_8 ( value )

    Stores an integer as 8 bits in the file.

    Note: The value should lie in the interval [0, 255]. Any other value will overflow and wrap around.

    To store a signed integer, use store_64, or convert it manually (see for an example).

    Stores the given array of bytes in the file.

    • void store_csv_line ( values, String delim=”,” )

    Store the given in the file as a line formatted in the CSV (Comma-Separated Values) format. You can pass a different delimiter delim to use other than the default "," (comma). This delimiter must be one-character long.

    Text will be encoded as UTF-8.

    • void store_double ( float value )

    Stores a floating-point number as 64 bits in the file.

    • void store_float ( value )

    Stores a floating-point number as 32 bits in the file.

    • void store_line ( String line )

    Appends line to the file followed by a line return character (\n), encoding the text as UTF-8.

    • void store_pascal_string ( string )

    Stores the given String as a line in the file in Pascal format (i.e. also store the length of the string).

    Text will be encoded as UTF-8.

    • void store_real ( value )

    Stores a floating-point number in the file.

    • void store_string ( String string )

    Appends string to the file without a line return, encoding the text as UTF-8.

    Note: This method is intended to be used to write text files. The string is stored as a UTF-8 encoded buffer without string length or terminating zero, which means that it can’t be loaded back easily. If you want to store a retrievable string in a binary file, consider using instead. For retrieving strings from a text file, you can use get_buffer(length).get_string_from_utf8() (if you know the length) or get_as_text.

    Stores any Variant value in the file. If full_objects is , encoding objects is allowed (and can potentially include code).