Fixes the Mech RFD (#7626)

It didn't work, now it does. Better at least.
Also gave the mounted extinguisher a non-default name.

code/game/objects/items/weapons/RFD.dm

@@ -234,7 +234,6 @@ RFD Construction-Class
 /obj/item/rfd/construction/borg/can_use(var/mob/user,var/turf/T)
 	return (user.Adjacent(T) && !user.stat)
 
-
 /obj/item/rfd/construction/mounted/useResource(var/amount, var/mob/user)
 	var/cost = amount*130 //so that a rig with default powercell can build ~2.5x the stuff a fully-loaded RFD-C can.
 	if(istype(loc,/obj/item/rig_module))
@@ -243,6 +242,11 @@ RFD Construction-Class
 			if(module.holder.cell.charge >= cost)
 				module.holder.cell.use(cost)
 				return 1
+	else if(istype(user, /mob/living/heavy_vehicle))
+		var/obj/item/cell/c = user.get_cell()
+		if(c && c.charge >= cost)
+			c.use(cost)
+			return 1
 	return 0
 
 /obj/item/rfd/construction/mounted/attackby()

code/modules/heavy_vehicle/equipment/engineering.dm

@@ -1,11 +1,11 @@
 /obj/item/mecha_equipment/mounted_system/rfd
 	name = "mounted rfd"
 	icon_state = "mecha_rfd"
-	holding_type = /obj/item/rfd/construction/borg
+	holding_type = /obj/item/rfd/construction/mounted
 	restricted_hardpoints = list(HARDPOINT_LEFT_HAND, HARDPOINT_RIGHT_HAND)
 	restricted_software = list(MECH_SOFTWARE_ENGINEERING)
 
-/obj/item/rfd/construction/borg/get_hardpoint_maptext()
+/obj/item/rfd/construction/mounted/get_hardpoint_maptext()
 	var/obj/item/mecha_equipment/mounted_system/MS = loc
 	if(istype(MS) && MS.owner)
 		var/obj/item/cell/C = MS.owner.get_cell()
@@ -13,7 +13,7 @@
 			return "[round(C.charge)]/[round(C.maxcharge)]"
 	return null
 
-/obj/item/rfd/construction/borg/get_hardpoint_status_value()
+/obj/item/rfd/construction/mounted/get_hardpoint_status_value()
 	var/obj/item/mecha_equipment/mounted_system/MS = loc
 	if(istype(MS) && MS.owner)
 		var/obj/item/cell/C = MS.owner.get_cell()
@@ -25,6 +25,7 @@
 	name = "mounted fire extinguisher"
 	max_water = 4000 //Good is gooder
 	icon_state = "mecha_exting"
+	safety = FALSE
 
 /obj/item/extinguisher/mech/New()
 	reagents = new/datum/reagents(max_water)
@@ -39,6 +40,7 @@
 	return reagents.total_volume/max_water
 
 /obj/item/mecha_equipment/mounted_system/extinguisher
+	name = "mounted extinguisher"
 	icon_state = "mecha_exting"
 	holding_type = /obj/item/extinguisher/mech
 	restricted_hardpoints = list(HARDPOINT_LEFT_HAND, HARDPOINT_RIGHT_HAND)

html/changelogs/Ferner-191207-bugfix_mechrfd.yml

@@ -0,0 +1,4 @@
+author: Ferner
+delete-after: True
+changes: 
+  - bugfix: "Fixed the mech rfd, and the extinguisher will now have a proper name."