Pazaz at 04:55, 8 September 2021

2021-09-08T04:55:30Z

← Older revision		Revision as of 00:55, 8 September 2021
Line 1:		Line 1:
	This file format was used by RS2 and RSC.		This file format was used by RS2 and RSC. Files are compressed using BZip2.

	It is ~~BZip2~~-~~based~~.		The BZip2 signature (4 bytes) is intentionally left out to save space, and it must be prepended before decompressing.
			{\| class="wikitable"
			\|+File Header
			!Purpose
			!Data Type
			\|-
			\|Unpacked size
			\|SWord
			\|-
			\|Packed size
			\|SWord
			\|}
			If the unpacked size and the packed size do not match, decompress the archive now.
			{\| class="wikitable"
			\|+Archive Header
			!Purpose
			!Data Type
			\|-
			\|File count
			\|Word
			\|-
			\|... for N files: ...
			\|
			\|-
			\|File hash
			\|DWord
			\|-
			\|File uncompressed size
			\|SWord
			\|-
			\|File compressed size
			\|SWord
			\|}
			When reading the file, if the archive was not decompressed before, decompress the file once it's read.

			Example:<syntaxhighlight lang="javascript">
			this.unpackedSize = readSWord(src);
			this.packedSize = readSWord(src);

			if (this.packedSize != this.unpackedSize) {
			let data = bz2.decompress(concatenate(Uint8Array, BZ2_HEADER, src.buffer.slice(src.offset)));
			src = { buffer: data, offset: 0, length: data.length };
			}
			this.data = src;

			this.fileCount = readWord(src);
			this.fileHash = [];
			this.fileSizeInflated = [];
			this.fileSizeDeflated = [];
			this.fileOffset = [];

			let offset = src.offset + (this.fileCount * 10);
			for (let file = 0; file < this.fileCount; file++) {
			this.fileHash[file] = readDWord(src);
			this.fileSizeInflated[file] = readSWord(src);
			this.fileSizeDeflated[file] = readSWord(src);
			this.fileOffset[file] = offset;
			offset += this.fileSizeDeflated[file];
			}
			</syntaxhighlight>

Pazaz at 02:09, 8 September 2021

2021-09-08T02:09:42Z

← Older revision	Revision as of 22:09, 7 September 2021
Line 1:	Line 1:
		This file format was used by RS2 and RSC.

		It is BZip2-based.

Pazaz: Created blank page

2021-09-07T02:52:27Z

Created blank page

New page

Old Engine/File Archive - Revision history

Pazaz at 04:55, 8 September 2021

Pazaz at 02:09, 8 September 2021

Pazaz: Created blank page