Update
The term "Distance" works fine, but it requires a relatively large difficulty for those who have little experience in Construct 2, so I researched and found a much simpler method, consisting of the use of Behaviors "Line of Sight"
I applied this Behaviors in the Drone in question (it can be in the player too, it makes no difference in this case)
And I have changed the following options
-Obstacles: Custom (formerly Solids)
-Range: 150 (goes out of your necessity)
Do not forget to look if the cone of view option is 360 °
And I created the following event
Drone>Has Line of Sight to> Player> Drone Set position> Player
In the "Has Line of Sight to> Player" part, right click and select the Invert option
Drone>Has Line of Sight to> Player> Drone Set position> Player