Drill and drone fixes

- Fixes mining drones having access to a plasma cutter energy weapon,
replaced with a diamond drill. Functionality is almost identical to what
it was with old plasma cutters.
- Pathing fixes for diamond drills.

code/game/gamemodes/newobjective.dm

@@ -841,7 +841,7 @@ datum
 					return 2
 
 			diamond_drill
-				steal_target = /obj/item/weapon/pickaxe/diamonddrill
+				steal_target = /obj/item/weapon/pickaxe/drill/diamonddrill
 				explanation_text = "Steal a diamond drill."
 				weight = 20
 

code/game/gamemodes/steal_items.dm

@@ -212,7 +212,7 @@ datum/theft_objective/ai/check_special_completion(var/obj/item/device/aicard/C)
 
 /datum/theft_objective/special/diamond_drill
 	name = "diamond drill"
-	typepath = /obj/item/weapon/pickaxe/diamonddrill
+	typepath = /obj/item/weapon/pickaxe/drill/diamonddrill
 
 /datum/theft_objective/special/boh
 	name = "bag of holding"

code/game/objects/structures/girders.dm

@@ -32,7 +32,7 @@
 			new /obj/item/stack/sheet/metal(get_turf(src))
 			qdel(src)
 
-	else if(istype(W, /obj/item/weapon/pickaxe/diamonddrill))
+	else if(istype(W, /obj/item/weapon/pickaxe/drill/diamonddrill))
 		user << "\blue You drill through the girder!"
 		new /obj/item/stack/sheet/metal(get_turf(src))
 		qdel(src)
@@ -224,7 +224,7 @@
 			user << "\blue You slice apart the girder!"
 			dismantle()
 
-	else if(istype(W, /obj/item/weapon/pickaxe/diamonddrill))
+	else if(istype(W, /obj/item/weapon/pickaxe/drill/diamonddrill))
 		user << "\blue You drill through the girder!"
 		dismantle()
 

code/game/turfs/simulated/walls.dm

@@ -385,7 +385,7 @@
 		return
 
 	//DRILLING
-	else if (istype(W, /obj/item/weapon/pickaxe/diamonddrill))
+	else if (istype(W, /obj/item/weapon/pickaxe/drill/diamonddrill))
 
 		user << "<span class='notice'>You begin to drill though the wall.</span>"
 

code/game/turfs/simulated/walls_reinforced.dm

@@ -253,7 +253,7 @@
 //vv OK, we weren't performing a valid deconstruction step or igniting thermite,let's check the other possibilities vv
 
 	//DRILLING
-	if (istype(W, /obj/item/weapon/pickaxe/diamonddrill))
+	if (istype(W, /obj/item/weapon/pickaxe/drill/diamonddrill))
 
 		user << "<span class='notice'>You begin to drill though the wall.</span>"
 

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

@@ -415,8 +415,7 @@
 		src.modules += new /obj/item/weapon/reagent_containers/spray/cleaner/drone(src)
 		src.modules += new /obj/item/weapon/soap(src)
 
-		src.emag = new /obj/item/weapon/gun/energy/plasmacutter(src)
-		src.emag.name = "Plasma Cutter"
+		src.emag = new /obj/item/weapon/pickaxe/drill/cyborg/diamond(src)
 
 		for(var/T in stacktypes)
 			var/obj/item/stack/sheet/W = new T(src)

code/modules/research/designs/mining_designs.dm

@@ -9,7 +9,7 @@
 	build_type = PROTOLATHE
 	materials = list("$metal" = 3000, "$glass" = 1000, "$diamond" = 3750) //Yes, a whole diamond is needed.
 	reliability_base = 79
-	build_path = /obj/item/weapon/pickaxe/diamonddrill
+	build_path = /obj/item/weapon/pickaxe/drill/diamonddrill
 	category = list("Mining")
 
 /datum/design/pick_diamond