"Fixed missile collision code to reduce friendly fire casualties"(1.2 readme)

[Tyburn JIG]

Longshanks: "Archers."
English Commander: "Beg your pardon sire,but won't we hit our own troops?"
Longshanks: "Yes...but we'll hit theirs as well!,we have reserves...attack."

Howdy all...

Could somebody please explain where the collision code files are kept within the data directory?I'm desperate to revert friendly fire to its former state,pre 1.2.

After spending some time rummaging about I cant seem to locate the file/s required,please point me in the right direction.

EDIT

I'm not having a moan(not much of one anyway),but I think it may have been a good idea on CA`s part to add a menu switch (as in Medieval) so friendly fire could be enabled on or off.That way they could have spent the patch time improving and finishing areas of the game that were rushed oringinaly.Instead of having to waste time re-writing the missile collision code(CA must have been happy with how it was before...and frankly so was I)...all because of an extremely vocal minority present on the forums.