private void test(){
      unit u = GetEnumUnit()
      real x = GetUnitX(u)  
      real y = GetUnitY(u)   
      real a = x + 20. * Cos(GetUnitFacing(u))
      real b = y + 20. * Sin(GetUnitFacing(u)) 
real e = AngleBetweenCord(x, y, a, b)
location l = Location(a, b)
  a = (GetUnitZ(u) - GetLocationZ(l))
      if a > 1. {
                 SetUnitX(u, x + 5. * Cos(e))
                 SetUnitY(u, y + 5. * Sin(e))}
      elseif a < -1. {
                 SetUnitX(u, x - 5. * Cos(e))
                 SetUnitY(u, y - 5. * Sin(e))}
   ...
l = null; u = null
}

      real a = x + 20. * Cos(GetUnitFacing(u))
      real b = y + 20. * Sin(GetUnitFacing(u))