About the Ulse

System of sensor. Used to make the npc detect your presence — of the player.
Very useful to games of the stealth: In that the player must keep your presence hidden, to continue.
The current system, contains more than twenty forms of detection of the player presence. See below some forms.
Now, you can do a Sensor between Events.
Tutorial check out: http://tutorial-dax.weebly.com/ulse.html