[LUA] - Distance between player and unit.

[Synnoid]

Is there any way to calculate distance between a player and a unit protected or otherwise?
I've been getting by with CheckInteractDistance() but I'm working on an advanced MoP warlock rotation that will require more accurate distance checking.

Thanks!

[eggsampler]

You cannot check a units range directly with lua, but this may be useful: IsSpellInRange - World of Warcraft Programming: A Guide and Reference for Creating WoW Addons
(EDIT: Judging by that other weirdly laid out thread that may not be accurate for mop, just check in the framexml code for references to IsSpellInRange and see how blizzard code uses it to find out more)

DBM and other such addons estimate to a fair degree of accuracy unit range by how far apart unit map positions are from each other, however this requires also knowing a "zoom" level to get an accurate range and also only works on group members (so not offensive targets).

I don't believe there are any other ways, protected or not, to tell unit distance unless someone has figured out something with the minimap tracking icons, haven't looked recently.