If enabled, detects mechs/trains and blocks their movement if they are coming from any of the directions set by dir. Can currently only be enabled/disabled by radio command and airlocks are updated to utilize this.
The current setup allows mechs to move through airlocks during normal cycles, which for example lets Odysseus out to save lives.
Once a shuttle docks however, the sensors are enabled to prevent boarding.
If blocked, players receive a simple message stating that their command has been overridden.
Simplifies the mapping of docking controllers by cutting down on the
number of tags needed to be entered.
Conflicts:
code/game/machinery/embedded_controller/simple_docking_controller.dm
