[MIRROR] Extensive surgery additions (#5590)

* Extensive surgery additions

* Update role_preferences.dm

* Update surgery_step.dm

code/game/machinery/computer/Operating.dm

@@ -6,12 +6,24 @@
 	circuit = /obj/item/circuitboard/computer/operating
 	var/mob/living/carbon/human/patient
 	var/obj/structure/table/optable/table
+	var/list/advanced_surgeries = list()
 	light_color = LIGHT_COLOR_BLUE
 
 /obj/machinery/computer/operating/Initialize()
 	. = ..()
 	find_table()
 
+/obj/machinery/computer/operating/attackby(obj/item/O, mob/user, params)
+	if(istype(O, /obj/item/disk/surgery))
+		user.visible_message("[user] begins to load \the [O] in \the [src]...",
+			"You begin to load a surgery protocol from \the [O]...",
+			"You hear the chatter of a floppy drive.")
+		var/obj/item/disk/surgery/D = O
+		if(do_after(user, 10, target = src))
+			advanced_surgeries |= D.surgeries
+		return TRUE
+	return ..()
+
 /obj/machinery/computer/operating/proc/find_table()
 	for(var/direction in GLOB.cardinals)
 		table = locate(/obj/structure/table/optable, get_step(src, direction))
@@ -69,4 +81,4 @@
 						"next_step" = capitalize(surgery_step.name),
 						"alternative_step" = alternative_step
 					))
-	return data
+	return data