i had this idea, a way to tell a unit not to attack another kind of unit. eg. a sniper has no effect on buildings and tanks, he will not be able to attack them.
how do we do this? i think it should be in the main mod's XML in the multipliers. if the multiplier is 0, then that attack type will not even try to hurt that armor type.
it would look like this:
<damage-multiplier attack="snipe" armor="metal" value="0"/>
any attack that is a "snipe" will not attack anything with "metal" armor.