API CheckInteractDistance

Returns true if the player is in range to perform a specific interaction with the unit. inRange = CheckInteractDistance(unit, distIndex)

• unit: : UnitId - The unit to compare distance to.
• distIndex: - A value from 1 to 5:
• 1 = Compare Achievements, 28 yards
• 2 = Trade, 8 yards
• 3 = Duel, 7 yards
• 4 = Follow, 28 yards
• 5 = Pet-battle Duel, 7 yards

• inRange: - 1 if you are in range to perform the interaction, nil otherwise.

• If "unit" is a hostile unit, the return values are the same. But you obviously won't be able to do things like Trade.

if ( CheckInteractDistance("target", 4) ) then FollowUnit("target"); else -- we're too far away to follow the target end