That should be relatively straightforward to get,just target an Ai for the distance and take a screenshot when it's skin loads.
Then save the game when the texture loads.Then back up the savegame,load it up again and double the distance between you and the Ai then save for a second time.You now have two near identical savegame with the difference between them being only the distance.Then cross reference the two savegames hexadecimally and find the differences between both savegames.The variation in the hexadecimal string is the variable of the moth distance.
Well then, knock yourself out. I'm not sure the save game is going to be quite that easy to compare however, as it may be compressed or have severe state changes even over a second (I've not looked at the save format of Hardwar.)
All the game conditions are stored in the savegame,the time,the locations and orders of the Ai,hangars and businesses etc.Every one of these conditions can be found by mapping the variables using the technique I've just mentioned.The more of the savegame you map the less effort it takes to identify the bytes that cause the actions and states.The savegame format is like a live mirror image of the hardwarw file which inputs the original conditions into the game environment. Hope this helps.