Name: 		LiosGame
Description: 	Inc. Liar LiosGame system 
Archive: 	.xfl .lwg .wcg .lim
Author: 	痴漢公賊 (glanser@163.com)
Version: 	0.9.7
Status: 	Alpha

【NOTICE】
1. Ogg Vorbis ACM Codec is needed to play some extracted .wav files.
2. RGB565 16-bit BMPs are not supported by Windows XP's image preview ("No preview" will appear). Those files can be viewed by Windows's pringbursh (May cause disorder), Photoshop, AcdSee (Not supported by 3.1) and irfanview.

【TODO】
Analysis the field "flags" at the beginning of wcg completely.

【.xfl Archive Info】
    the xfl is actual type of archive with directory.
    original data according to practical situation, can be wcg, lwg, lim, wav(*note1), gsc(binary script) and so on.
    
    	header: 
		s8 magic[2];		// "LB"
		u16 version;		// must be 1
		u32 index_length;	// index segment length
		u32 index_entries;	// resource number
 	index segment: 
		s8 name[32];		// resource name
		32 offset;		// resource data offset(count from index segment ending)
		u32 length;		// resource length
	data: 
		closely behind index segment.

	*note1: playback of most wav depend on support of Vorbis ACM codec developed by japanese.

【.lwg Resource Info】
    the lwg is actual type of archive with directory.
    the file describe image element info of all components in a frame(such as "config" page).
    original data is wcg.
    
    	header: 
		s8 magic[2];		// "LG"
		u16 version;		// must be 1
		u32 height;		// image width
		u32 width;		// image height
		u32 entries;		// image element number
		u32 reserved;

		following data is divided into 2 parts: index segment and data segment, beginning of every field use 4 bytes to express the segment length .

 	index segment: every index item with variable length
		u32 x_poisition;	// the origin x coordinate of image element in whole frame 
		u32 y_position;		// the origin y coordinate of image element in whole frame
		u8 unknown;
		u32 offset;		// resource data offset(count from data segment beginning)
		u32 length;		// resource length
		u8 name_length;		
		s8 *name;		// resource name
	data field: 
		closely behind length field of data segment; content is wcg resource.

【.wcg Resource Info】
    original data is 32 bit BMP.

   	header: 
		s8 magic[2];		// "WG"
		u16 flags;		// uncompleted analysis
		u32 unknown;		// 0
		u32 width;		// image width
		u32 height;		// image height

		following data segment is divided into 2 parts: first part is compressed R(red) and A(alpha) data in every pixel; second one is B(blue)and G(green) data in every pixel. before every data field has a info data structure.

	info data structure: 
		u32 uncomprlen;		// decompressed length
		u32 comprlen;		// searching table + RLE compressed length
		u16 code_number;	// table item number(every item with 2 bytes)
		u16 unknown;		
 
	data segment: 
		closely behind info data structure

【.lim Resource Info】
    original data is BMP.

   	header: 
		s8 magic[2];		// "LM"
		u8 flag0;		// [3:0]type - 2: original data is 16-bit BMP(according to flag1, may also contain 32-bit alpha); 3: original data is 32-bit BMP: etc: invalid value
					// [4]whether with RGB data: 0 - only alpha; 1 - RGB and alpha;
		u8 flag1;		// worth only for type2; [0]whether with alpha: 0 - no alpha; 1 - alpha
		u32 unknown;		// 0
		u32 width;		// image width
		u32 height;		// image height

		type 2: 
		according to [0] in flag1, data may only contain a piece of RGB565(*note1), may also contain RGB565 + alpha 2 pieces. before every data field has a info data structure.

		type 3:
		according to [4] in flag0, ata may only contain alpha piece, may also contain B, G, R, A 4 pieces. before every data field has a info data structure.

	info data structure: 
		u32 uncomprlen;		// decompressed length
		u32 comprlen;		// searching table + RLE compressed length
		u16 code_length;	// table item number(difference according to flag0 and flag1 definition, every item length may be 1 or 2 bytes)
		u16 unknown;	
	
	*note1: the image preview of Windows XP cann't support 16-bit image in RGB565 format(show "no preview")，can view with Microsoft Paint including with Windows, PhotoShop or AcdSee and so on.


【ChangeLog】
2009-04-10 23:08 ver 0.9.7 support alpha blending
2007-10-21 16:18 ver 0.9.6 supported extracting nested .xfl resource
2007-05-12 16:18 ver 0.9.5 1st version released
