Here, Torque has a lot of damage, so this routine decides whether he
should self destruct (if value ~v1 < 3 then
self destruct means that if an enemy is still on Torque's perimeter
then he will self destruct) or return to the normal hunting routines (if
value ~v1 > 70 then goto start_ #cur_head means that if the
enemy is a long way away, then it is no immediate danger, and Torque should
carry on as normal).
If the enemy is still close, but not right next to Torque, then he jumps
to a routine to repair his damage.