The Last Express BG - Revision history

imported>Ikskoks at 21:14, 21 January 2021

2021-01-21T21:14:40Z

← Older revision	Revision as of 21:14, 21 January 2021
(No difference)

imported>Ikskoks at 21:14, 21 January 2021

2021-01-21T21:14:40Z

← Older revision		Revision as of 21:14, 21 January 2021
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	{{DEFAULTSORT:{{PAGENAME}}}}		{{DEFAULTSORT:{{PAGENAME}}}}
	[[Category:PC formats]]		[[Category:PC formats]]
			[[Category:File Format]]

imported>Dinoguy1000: some cleanup

2011-10-21T08:42:48Z

some cleanup

← Older revision	Revision as of 08:42, 21 October 2011
(No difference)

imported>Dinoguy1000: some cleanup

2011-10-21T08:42:48Z

some cleanup

← Older revision		Revision as of 08:42, 21 October 2011
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	== BG ==		== BG ==
	{{GRAFPageMisc\|~~format_type={{FormatVideo}}\|date_posted=07:04, 26 March 2007 (EDT)~~}}		{{GRAFPageMisc\|Image}}

	=== Format Specifications ===		=== Format Specifications ===
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	{{GRAFPageFooter}}		{{GRAFPageFooter}}

	[[Category:~~Platform~~ PC~~\|The Last Express BG]] [[Category:Complete Almost Done\|The Last Express BG]] [[Category:CE Compressed\|The Last Express BG~~]]		{{DEFAULTSORT:{{PAGENAME}}}}
			[[Category:PC formats]]

imported>DenizOezmen: added format description

2007-03-26T11:04:47Z

added format description

← Older revision	Revision as of 11:04, 26 March 2007
(No difference)

imported>DenizOezmen: added format description

2007-03-26T11:04:47Z

added format description

New page

{{GRAFPageHeader}}

== BG ==
{{GRAFPageMisc|format_type={{FormatVideo}}|date_posted=07:04, 26 March 2007 (EDT)}}

=== Format Specifications ===
{{GRAFPageFormat|1=
uint32 {4}   - {{Unknown|position on screen?}} 
uint32 {4}   - {{Unknown|position on screen?}} 
uint32 {4}   - image width 
uint32 {4}   - image height 
uint32 {4}   - red colour channel data size 
uint32 {4}   - blue colour channel data size 
uint32 {4}   - green colour channel data size 
byte {x}     - red colour channel data 
byte {x}     - green colour channel data 
byte {x}     - blue colour channel data 
}}

=== Notes and Comments ===
BG files usually contain the game's background images. The three single colour channels (red, green and blue; also note the switched order of the header size values) have been compressed separately by a custom scheme. To decompress such a channel, the following method may be used:

while InPos < InSize do
begin
if InBuffer[InPos] < 0x80 then
begin
''// direct decompression''
Len := InBuffer[InPos] shr 5 + 1;
Data := InBuffer[InPos] shl 3;
InPos++;
''Copy Data byte Len times into OutBuffer while increasing OutPos.''
end
else
begin
''// buffer back reference, 4096 byte window''
''take InBuffer[InPos] and the following value as a big endian uint16 OfsLen''
''while zeroing the first bit''
Len := OfsLen shr 12 + 3;
HisPos := OutPos - 4096 + (OfsLen and 0x0fff);
InPos += 2;
''copy Len many bytes from HisPos onwards to OutPos, increasing both''
end
end;

=== MultiEx BMS Script ===
{{NoBMSScript}}

=== Supported by Programs ===
[http://oezmen.eu/gameresources/ BG2BMP]

=== Links ===
None

=== Games ===
* [[The Last Express]] [[BG|*.bg]]

{{GRAFPageFooter}}

[[Category:Platform PC|The Last Express BG]] [[Category:Complete Almost Done|The Last Express BG]] [[Category:CE Compressed|The Last Express BG]]