How to track a geomitry from another geomitry

[Ultima]

How do i make, for example an cannon with a motor on point at another geomitry/ app.mousepos on the scene if they move around?


I want to make a ship with multiple self aiming turrets thats aims on sertain geomitriers that i for example had my "tracking laser" on, and if i aim at something else with this tracking laser the turrets is then locked on to that geomitry i lastly aimed at.

The "tracking laser" tags the last geomitry i had it pointing at and then the turrets are locking on to that geomitry and then awiting for me to pull the trigger.