100 lines
3.2 KiB
GDScript3
100 lines
3.2 KiB
GDScript3
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class_name PakAssetLoader
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static var key = "a8Yb5$IpVobR,1Xph!k(#!B9h$V[o[r-I'x.37Q%E;lt2wGgk)hNF_p_!mF?Ds54.*8ErbCK,30".to_utf8_buffer()
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#loads a file from a .pak file.
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static func load_file(path: String):
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var split = path.split(".pak/")
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var pak = split[0]
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var filename = split[1]
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var zip_reader = ZIPReader.new()
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var err = zip_reader.open(pak + ".pak")
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if err != OK:
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report_errors(err, pak + ".pak")
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zip_reader.close()
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var bytes = zip_reader.read_file(filename)
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zip_reader.close()
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if bytes.size() == 0:
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report_errors(ERR_FILE_NOT_FOUND, filename)
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if filename.ends_with(".dat"):
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var magic = bytes[0]+bytes[1]+bytes[2]+bytes[3]
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if magic == 0x25 + 0x7C + 0x0A + 0x42: #XOR'ed DDS file
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unXOR(bytes)
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magic = bytes[0]+bytes[1]+bytes[2]+bytes[3]
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if magic == 0x44 + 0x44 + 0x53 + 0x20: #DDS file
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var header = bytes.slice(0, 0x80)
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bytes = bytes.slice(0x80)
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var height = header[0xc] + (header[0xd] * 256)
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var width = header[0x10] + (header[0x11] * 256)
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var format = header[0x54]+header[0x55]+header[0x56]+header[0x57]
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if format == 0:
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fix_BGRA(bytes)
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var img = Image.create_from_data(width, height, false, Image.FORMAT_RGBA8, bytes)
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return ImageTexture.create_from_image(img)
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elif format == 0x44 + 0x58 + 0x54 + 0x35:
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var img = Image.create_from_data(width, height, false, Image.FORMAT_DXT5, bytes)
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return ImageTexture.create_from_image(img)
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else:
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report_errors(ERR_FILE_UNRECOGNIZED, filename)
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return
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else:
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report_errors(ERR_FILE_UNRECOGNIZED, filename)
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return
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elif filename.ends_with(".ogg"):
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var magic = bytes[0]+bytes[1]+bytes[2]+bytes[3]
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if magic == 0x4F + 0x67 + 0x67 + 0x53:
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var stream = AudioStreamOggVorbis.load_from_buffer(bytes)
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stream.loop = true
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stream.loop_offset = get_loop_off(filename)
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return stream
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else:
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report_errors(ERR_FILE_UNRECOGNIZED, filename)
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elif filename.ends_with(".fld"):
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return bytes
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static func fix_BGRA(bytes: PackedByteArray):
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for i in range(0, bytes.size(), 4):
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var tmp = bytes[i]
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bytes[i] = bytes[i+2]
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bytes[i+2] = tmp
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static func unXOR(bytes: PackedByteArray):
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for i in range(bytes.size()):
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bytes[i] ^= key[i % key.size()]
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static func get_loop_off(filename: String):
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match filename:
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"bgm/0.ogg":
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return 1.72
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"bgm/1.ogg":
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return 2
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static func report_errors(err: int, filepath):
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# See: https://docs.godotengine.org/en/latest/classes/class_@globalscope.html#enum-globalscope-error
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var result_hash = {
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ERR_FILE_NOT_FOUND: "File: not found",
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ERR_FILE_BAD_DRIVE: "File: Bad drive error",
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ERR_FILE_BAD_PATH: "File: Bad path error.",
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ERR_FILE_NO_PERMISSION: "File: No permission error.",
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ERR_FILE_ALREADY_IN_USE: "File: Already in use error.",
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ERR_FILE_CANT_OPEN: "File: Can't open error.",
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ERR_FILE_CANT_WRITE: "File: Can't write error.",
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ERR_FILE_CANT_READ: "File: Can't read error.",
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ERR_FILE_UNRECOGNIZED: "File: Unrecognized error.",
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ERR_FILE_CORRUPT: "File: Corrupt error.",
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ERR_FILE_MISSING_DEPENDENCIES: "File: Missing dependencies error.",
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ERR_FILE_EOF: "File: End of file (EOF) error."
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}
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if err in result_hash:
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print("Error: ", result_hash[err], " ", filepath)
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else:
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print("Unknown error with file ", filepath, " error code: ", err)
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