To find out whether this is possible, Torque first scans the position directly in front of him (scan relative 1). If this square is empty, then he scans the next square after this one (using a gps-scan with coordinates calculated in the previous cmath formulae). If this square is also empty, then Torque scans the next square, again using coordinates derived from a cmath expression.
If all of these three squares are empty, then it is possible to frag the enemy, so Torque launches a missile.
If any of these squares turned out to not be empty, then Torque gives up on trying to frag the enemy, and jumps to his Evade: routine to get out of any immediate danger, and return to the normal hunting routines.