100 80 set-speed!
get-turret 18 + set-turret!         ( Rotate turret )

1 sensor? { 80 -80 set-speed! } if  ( Turn if collision sensor triggered )
2 sensor? { -80 80 set-speed! } if  ( Turn if collision sensor triggered )

3 sensor? { 50 -50 set-speed! } if
4 sensor? { -50 50 set-speed! } if

5 sensor? { 100 100 set-speed! } if
6 sensor? { 0 0 set-speed! } if
0 sensor? { fire! } if              ( Fire if turret sensor triggered )