Merge pull request #6175 from Allfd/RigPort

Ports MarsM0nd's RIG suit fixes.

code/modules/surgery/rig_removal.dm

@@ -0,0 +1,58 @@
+//Procedures in this file: Unsealing a Rig.
+
+/datum/surgery/rigsuit
+	name = "Rig Unsealing"
+	steps = list(/datum/surgery_step/rigsuit)
+	possible_locs = list("chest")
+
+/datum/surgery/rigsuit/can_start(mob/user, mob/living/carbon/target)
+	if(ishuman(target))
+		var/mob/living/carbon/human/H = target
+		var/obj/item/backitem = H.get_item_by_slot(slot_back)
+		if(istype(backitem,/obj/item/weapon/rig)) //Check if we have a rig to operate on
+			if(backitem.flags&NODROP) //Check if the rig is sealed, if not, we don't need to operate
+				return 1
+	return 0
+
+//Bay12 removal
+/datum/surgery_step/rigsuit
+	name="Cut Seals"
+	allowed_tools = list(
+		/obj/item/weapon/weldingtool = 80,
+		/obj/item/weapon/circular_saw = 60,
+		/obj/item/weapon/gun/energy/plasmacutter = 100
+		)
+
+	can_infect = 0
+	blood_level = 0
+
+	time = 50
+
+/datum/surgery_step/hardsuit/can_use(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+	if(!istype(target))
+		return 0
+	if(istype(tool,/obj/item/weapon/weldingtool))
+		var/obj/item/weapon/weldingtool/welder = tool
+		if(!welder.isOn() || !welder.remove_fuel(1,user))
+			return 0
+	return (target_zone == "chest") && istype(target.back, /obj/item/weapon/rig) && (target.back.flags&NODROP)
+
+/datum/surgery_step/rigsuit/begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+	user.visible_message("[user] starts cutting through the support systems of [target]'s [target.back] with \the [tool]." , \
+	"You start cutting through the support systems of [target]'s [target.back] with \the [tool].")
+	..()
+
+/datum/surgery_step/rigsuit/end_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+
+	var/obj/item/weapon/rig/rig = target.back
+	if(!istype(rig))
+		return
+	rig.reset()
+	user.visible_message("<span class='notice'>[user] has cut through the support systems of [target]'s [rig] with \the [tool].</span>", \
+		"<span class='notice'>You have cut through the support systems of [target]'s [rig] with \the [tool].</span>")
+	return 1
+
+/datum/surgery_step/rigsuit/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+	user.visible_message("<span class='danger'>[user]'s [tool] can't quite seem to get through the metal...</span>", \
+	"<span class='danger'>Your [tool] can't quite seem to get through the metal. It's weakening, though - try again.</span>")
+	return 0