Use distance in macro

Hello everybody, I'm wondering if there is any way to use distance in macro (or apI if applicable). What I mean is : A weapon (shotgun) does double damage when closer than 10 meters and/or buckshot cause less damage when over 20 meters. I know I could make a query asking for the distance and therefore applying the damage modifier. But I'm looking for something that would be automated since my custom system already ask a lot of query during a role. Many thanks.

It's only possible to do this with an API script. If you're planning to use an API script, you;d be best off reworking on the entire roll process as a custom script. You'd also have to think about: what happens if we are doing a quick fight scene without using the map? Having a script version would require you to always use the map (unless adding extra complications).

GiGs said:  what happens if we are doing a quick fight scene without using the map?  That's... something I've never though about. Good thing we have others to bring us back on the right track. Many thanks for the GM wisdom.