-I have a device named red_door_1. Its type is prison_door; the device from a50.
-I have a control named door_control of the type holo control.
-When holo control is activated, I want the doors to turn off, like they do in a50.

Halp?

Power groups or scripts.

How would I do so with a script?

device_set_position

Should be fairly simple, but I was hopping for Gamma to post a better response.

Isn't there a single day I can go without doing work?

(sleep_until (= (device_get_position [DEVICE CONTROL]) 1.0) 15)
(device_set_position [DEVICE MACHINE] 1.0)

Something similar to this, if my memory serves me correctly. Power groups would be much more efficient, as if you were to hit the control, the position between both the control and the machine would be set to 1.0. To create a new power group, in Sapien, under mission > objects > devices > device groups, create a new instance. Give it a name, and an initial state (0.0 for off). You might also want to check "can only change once." Then, in the device machine and control, under power group, choose your new device group. If you want the door to be set open, you would also put it under position group (this is for devices that won't open if you go near, like the a50 prison doors).

A50 prison doors have a permutation that is used to display if they are open or not. Check the a50 script from the Zteam Campaign Script release, or find the permutation in the gbxmodel in Guerilla and then use

object_set_permutation [Door] ["Region"] ["Permutation"]

to control it's status. Use Gamma's sleep statement above but instead of position use what I gave you.

I switched to some other door from a50 where I actually have to set the power. Got it to work, though. Thanks again.