whole bunch of surgery changes

early cautery not compiling yet

code/modules/mob/living/silicon/robot/robot_modules.dm

@@ -153,10 +153,9 @@
 	modules += new /obj/item/stack/medical/ointment/advanced(src)
 	modules += new /obj/item/stack/medical/splint(src)
 	modules += new /obj/item/stack/nanopaste(src)
-	modules += new /obj/item/scalpel(src)
+	modules += new /obj/item/scalpel/laser(src)
 	modules += new /obj/item/hemostat(src)
 	modules += new /obj/item/retractor(src)
-	modules += new /obj/item/cautery(src)
 	modules += new /obj/item/bonegel(src)
 	modules += new /obj/item/FixOVein(src)
 	modules += new /obj/item/bonesetter(src)
@@ -416,10 +415,9 @@
 	modules += new /obj/item/stack/medical/ointment/advanced(src)
 	modules += new /obj/item/stack/medical/splint(src)
 	modules += new /obj/item/stack/nanopaste(src)
-	modules += new /obj/item/scalpel(src)
+	modules += new /obj/item/scalpel/laser(src)
 	modules += new /obj/item/hemostat(src)
 	modules += new /obj/item/retractor(src)
-	modules += new /obj/item/cautery(src)
 	modules += new /obj/item/bonegel(src)
 	modules += new /obj/item/FixOVein(src)
 	modules += new /obj/item/bonesetter(src)

code/modules/surgery/helpers.dm

@@ -3,6 +3,13 @@
 		var/mob/living/carbon/human/H
 		var/obj/item/organ/external/affecting
 		var/selected_zone = user.zone_sel.selecting
+		var/list/cautery_tools = list(
+								/obj/item/scalpel/laser = 100, \
+								/obj/item/cautery = 100,			\
+								/obj/item/clothing/mask/cigarette = 90,	\
+								/obj/item/lighter = 60,			\
+								/obj/item/weldingtool = 30
+								)
 
 		if(istype(M, /mob/living/carbon/human))
 			H = M
@@ -61,26 +68,49 @@
 							user.visible_message("[user] prepares to operate on [M]'s [parse_zone(selected_zone)].", \
 							"<span class='notice'>You prepare to operate on [M]'s [parse_zone(selected_zone)].</span>")
 
-			else if(!current_surgery.step_in_progress)
-				if(current_surgery.status == 1 )
+			else if(!current_surgery.step_in_progress  && ishuman(M)) //early surgery cautery
+				var/datum/surgery_step/generic/cauterize/C = new
+				var/target_zone = check_zone(selected_zone)
+				if(current_surgery.status == 1)
 					M.surgeries -= current_surgery
 					to_chat(user, "You stop the surgery.")
 					qdel(current_surgery)
-				else if(istype(user.get_inactive_hand(), /obj/item/cautery) && current_surgery.can_cancel)
-					M.surgeries -= current_surgery
-					user.visible_message("[user] mends the incision on [M]'s [parse_zone(selected_zone)] with the [I] .", \
-						"<span class='notice'>You mend the incision on [M]'s [parse_zone(selected_zone)].</span>")
-					if(affecting)
-						affecting.open = 0
-						affecting.germ_level = 0
-					qdel(current_surgery)
-				else if(current_surgery.can_cancel)
-					to_chat(user, "<span class='warning'>You need to hold a cautery in inactive hand to stop [M]'s surgery!</span>")
 
+				else if(current_surgery.can_cancel)
+					var/cautery_chance = 0
+					var/obj/item/cautery_tool = null
+
+					if(isrobot(user))
+						if(istype(I, /obj/item/scalpel/laser))
+							cautery_chance = 100
+							cautery_tool = I
+
+					else
+						for(var/T in cautery_tools)
+							if(istype(user.get_inactive_hand(), T))
+								cautery_chance = cautery_tools[T]
+								cautery_tool = user.get_inactive_hand()
+
+					if(cautery_chance)
+						C.begin_step(user, H, selected_zone, target_zone, cautery_tool, current_surgery)
+						if(do_after(user, C.time * cautery_tool.toolspeed, target = M))
+							if(!isrobot(user))
+								cautery_chance *= get_location_modifier(target)
+								cautery_chance *= get_pain_modifier(target)
+							if(prob(cautery_chance))
+								C.end_step(user, H, selected_zone, target_zone, cautery_tool, current_surgery)
+								M.surgeries -= current_surgery
+								qdel(current_surgery)
+							else
+								C.fail_step(user, H, selected_zone, target_zone, cautery_tool, current_surgery)
+
+					else if(!isrobot(user))
+						to_chat(user, "<span class='notice'>You need to hold a cautery or equivalent in your inactive hand to stop the surgery in progress.</span>")
 
 			return 1
 	return 0
 
+
 /proc/get_pain_modifier(mob/living/carbon/human/M) //returns modfier to make surgery harder if patient is conscious and feels pain
 	if(M.stat) //stat=0 if CONSCIOUS, 1=UNCONSCIOUS and 2=DEAD. Operating on dead people is easy, too. Just sleeping won't work, though.
 		return 1
@@ -111,6 +141,18 @@
 	else
 		return 0.5
 
+//check if mob is lying down on something we can operate him on.
+/proc/can_operate(mob/living/carbon/M)
+	if(locate(/obj/machinery/optable, M.loc) && (M.lying || M.resting))
+		return TRUE
+	if(locate(/obj/structure/bed, M.loc) && (M.buckled || M.lying || M.weakened || M.stunned || M.paralysis || M.sleeping || M.stat))
+		return TRUE
+	if(locate(/obj/structure/table, M.loc) && (M.lying || M.weakened || M.stunned || M.paralysis || M.sleeping || M.stat))
+		return TRUE
+	if((istype(M.loc, /turf/simulated/floor) || istype(M.loc, /turf/unsimulated/floor)) && (M.lying || M.weakened || M.stunned || M.paralysis || M.sleeping || M.stat))
+		return TRUE
+	return FALSE
+
 // Called when a limb containing this object is placed back on a body
 /atom/movable/proc/attempt_become_organ(obj/item/organ/external/parent,mob/living/carbon/human/H)
 	return 0