1. open xxx.OBJ
2. find the item
3. each slot is 172 bytes and count the number
4. add 50000 to that number
5. open ZOOMMAPS.DAT
6. search for that number
7. the structure of this file is
first 8 bytes global location <<< the same thing in msglog
next 4096 for buildings
next 4096 discovered
next 4096 terrain
next 4096 steepness
next 72000 things <<< you are here somewhere
each thing(include items, npc, tracks, etc.) slot contain 36 bytes and the reference number should be the 12th
the exact position in the map are save in first 4 bytes
row column