MDT (Gotcha Force): Difference between revisions

Revision as of 22:55, 6 September 2022

This section is currently being written.

More research is needed and some paragraphs may be wrong.

MDT files are similar to PZZ files, with a header of 0x800 / 2048 bytes including :

It is possible to unpack and repack .mdt files with the pzztool.py tool. Unlike pzz, the internal files of .mdt are packaged and not compressed.

000 dat file contains at first sight all texts of the game (Related to all dat file, not only one).
001 TPL including an alphanumeric alphabet used by the dat file

dat file: header:

4 bytes - offset_block_list offset
4 bytes - symbols_count # number of symbols contained in the tpl
2 bytes - offsets for each symbol - in the file relative to after the header (array)

offset_block_list:

4 bytes - uint32 absolute offset array of the offsets_blocks terminated by -1 (FF FF FF FF)

offset_block_1: # first offsets block describing data block 1 partitioning

4 bytes - int32 absolute array of offsets in the data block terminated by -1 (FF FF FF FF). The first offset is the data block offset

data_block_1:

offset_block_2: ... data_block_2: ...

Virtual World RE has developed the python script pzztool.py to manipulate MDT files and their internal files.

PGCD of MDT file sizes: 2048 / 0x800

@@ Line 15: / Line 15: @@
 * 001 TPL including an alphanumeric alphabet used by the dat file
-dat file header:
+dat file:
-* 4 bytes - block 1 offset
+'''header''':
+* 4 bytes - offset_block_list offset
 * 4 bytes - symbols_count # number of symbols contained in the tpl
 * 2 bytes - offsets for each symbol - in the file relative to after the header (array)
-dat file block 1:
+'''offset_block_list''':
-* 4 bytes - uint16 absolute offset array of the offsets_blocks terminated by -1 (FF FF FF FF)
+* 4 bytes - uint32 absolute offset array of the offsets_blocks terminated by -1 (FF FF FF FF)
-dat file block 2: # first offsets_block
+'''offset_block_1''': # first offsets block describing data block 1 partitioning
-* 4 bytes - array of signed int16 offsets absolute terminated by -1 (FF FF FF FF) The first offset is the block 3 offset
+* 4 bytes - int32 absolute array of offsets in the data block terminated by -1 (FF FF FF FF). The first offset is the data block offset
-dat file block 3:
+'''data_block_1''':
-* 4 bytes - block 3 offset
-* 4 bytes - uint32 - list of offsets relative to this file ?
-dat file block 4:
 * 2 bytes - signed int16 list <- block 2 describe where each element begin
+offset_block_2: ...
+data_block_2: ...
 Virtual World RE has developed the python script [https://github.com/Virtual-World-RE/NeoGF/tree/main/pzztool pzztool.py] to manipulate MDT files and their internal files.