This is a forum, not a chatroom. This means people may not find your posts for hours or days.

Opening a door isn't complex, just depends on what kind of door do you want, one that hinges or one that slides.

look up "event_impact" in the manual.

Then, if you want the door to hinge, try "c_rotate" to turn the door, if you want it to slide look up "c_move"