Player can't attack same X

[vaka deep]

I used to have a code which won't allow players to attack other whose feet color was the same. It was really useful for war ots, but I can't find it anymore.
I am looking for a similar code doesn't matter whether the condition to cancel the attack may be outfits, colors, same guild.
Any ideas?
Thanks in advance.

 

[kikos]

in config lua

    noDamageToSameLookfeet = false

 

[Redan]

what distro? Lua/C++ code?