Short for distu(mtmp->mx, mtmp->my) (i.e. the distance between the hero and the specified monster), which is a very common use of distu(). The idea is that this would be a convenient shorthand for it; I actually thought it (or something very similar) existed already, but couldn't find it when I tried to use it earlier. Based on the number of uses of fully-spelled-out 'distu(mtmp->mx, mtmp->my)' replaced in this commit I'm guessing I just imagined it.
34 KiB
34 KiB