View source for Lump file format

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'''Lump files''' are used to store [[Source BSP File Format#Lumps|lump data]] independently from a [[BSP]] file in separate files with the file extension <code>.lmp</code>.

Each lump file contains a 20 bytes long header before the actual lump data. It contains some information about the lump that were stored in the BSP file before extraction.

<source lang="cpp">struct lumpfileheader_t
{
	int lumpOffset;   // offset in the file where the lump data begins (should be 0x14)
	int lumpID;       // the lump ID according to the lump table
	int lumpVersion;  // same as "version" in lump_t	
	int lumpLength;   // same as "filelen" in lump_t
	int mapRevision;  // same as in dheader_t
};</source>

{{tip|It is possible to edit an extracted entity lump with a plain text editor, if the lumpSize field is corrected afterwards. [http://steamreview.org/external/vdc/lmpfix.zip lmpfix], a third-party tool, is available to automate the process.}}

== See also ==
* {{ls|4}}
* [[Source BSP File Format]]
* [[Patching levels with lump files]]
* [[ENT]] file

[[Category:File formats]]