I would like to share the guide,the script is associated with shooting on  ordered triggers, for the gradual opening of the door
in mapname gsc.
1)add under- maps\_zombiemode::main();thread zk_shootable_door();
2)at the end of the file add-
zk_shootable_door()
{
 
        door = getEnt("shootable_door", "targetname");  //this will be the door that opens
        shoot_me = getEnt("shoot_me", "targetname");    //this is the trigger that you shoot
 
 
        shoot_me waittill("trigger");
        shoot_me delete();
        play_sound_at_pos("door_slide_open", door.origin);
        //door MoveZ (084, 1);
        //door MoveY (100, 5);
        door MoveX (10, 5);
    door connectpaths();
     iprintln("You found me");     //remove this line if you don't want it to say that
 
        door2 = getEnt("shootable_door", "targetname");  //this will be the door that opens
        shoot_2_me = getEnt("shoot_2_me", "targetname");    //this is the trigger that you shoot
 
 
        shoot_2_me waittill("trigger");
        shoot_2_me delete();
        play_sound_at_pos("door_slide_open", door.origin);
        //door MoveZ (084, 1);
        //door MoveY (100, 5);
        door MoveX (10, 5);
    door connectpaths();
     iprintln("You found me again");     //remove this line if you don't want it to say that
 
        door2 = getEnt("shootable_door", "targetname");  //this will be the door that opens
        shoot_3_me = getEnt("shoot_3_me", "targetname");    //this is the trigger that you shoot
 
 
        shoot_3_me waittill("trigger");
        shoot_3_me delete();
        play_sound_at_pos("door_slide_open", door.origin);
        //door MoveZ (084, 1);
        //door MoveY (100, 5);
        door MoveX (80, 5);
    door connectpaths();
     iprintln("you won");     //remove this line if you don't want it to say that
 
        wait 1;
}
 
in the radiant, create three trigger damage and three normal static models, as well as a door from script brush
https://www.mediafire.com/file/lr1u509hbrfe82s/tutorial-gradual_opening_of_the_door.txt/file