anchor.diff:  				update()
   				sleep(5)
   				trap_flush()
  +				if(auto_close_on_mob)
  +					spawn(auto_close_on_mob)
  +						close()
   		else
   			user.visible_message("[user] is attempting to step on the edge of [src].", \
   				"<span class='notice'>You start attempting to step on the edge of [src]...</span>")
  
positive.code: 	spawn(5)
  		trunk = locate() in loc
  		if(trunk)
  			trunk.linked = src        // link the pipe trunk to self
  
  /obj/machinery/disposal/trapdoor/Crossed(AM as mob|obj)
  	if(open)
  
negative.code: 	density = 0
  	icon = 'icons/obj/atmospherics/pipes/trapdoor.dmi'
  	icon_state = "closed"
  	mode = 0
  	layer = 2.01
  	var/id = 1
  	var/auto_close = 1200
  	var/auto_close_on_mob = 100
  	var/sound_open = 'sound/machines/blast_door.ogg'
  	var/sound_close = 'sound/machines/blast_door.ogg'
  	var/open = FALSE
  