function MissleSpeed takes unit Attacker,unit Attacked returns real
local real x = GetWidgetX(Attacked) - GetWidgetX(Attacker)
local real y = GetWidgetY(Attacked) - GetWidgetY(Attacker)
local real dist = SquareRoot(x * x + y * y)
local real speed = LoadReal(DataHashAS,GetUnitTypeId(Attacker),-3)
     if speed > 0. then
         return dist/speed
     endif
return 0.
endfunction