proper fix aoaooa

code/game/machinery/computer/buildandrepair.dm

@@ -3,7 +3,7 @@
 	icon_state = "0"
 	state = 0
 
-/obj/structure/frame/computer/attackby(obj/item/P, mob/user, params)
+/obj/structure/frame/computer/attackby(obj/item/P, mob/living/user, params)
 	add_fingerprint(user)
 	switch(state)
 		if(0)
@@ -11,7 +11,7 @@
 				to_chat(user, "<span class='notice'>You start wrenching the frame into place...</span>")
 				if(P.use_tool(src, user, 20, volume=50))
 					to_chat(user, "<span class='notice'>You wrench the frame into place.</span>")
-					setAnchored(TRUE)
+					set_anchored(TRUE)
 					state = 1
 				return
 			if(P.tool_behaviour == TOOL_WELDER)
@@ -19,7 +19,7 @@
 					return
 
 				to_chat(user, "<span class='notice'>You start deconstructing the frame...</span>")
-				if(P.use_tool(src, user, 20, volume=50) && state == 0)
+				if(P.use_tool(src, user, 20, volume=50))
 					to_chat(user, "<span class='notice'>You deconstruct the frame.</span>")
 					var/obj/item/stack/sheet/metal/M = new (drop_location(), 5)
 					M.add_fingerprint(user)
@@ -28,15 +28,15 @@
 		if(1)
 			if(P.tool_behaviour == TOOL_WRENCH)
 				to_chat(user, "<span class='notice'>You start to unfasten the frame...</span>")
-				if(P.use_tool(src, user, 20, volume=50) && state == 1)
+				if(P.use_tool(src, user, 20, volume=50))
 					to_chat(user, "<span class='notice'>You unfasten the frame.</span>")
-					setAnchored(FALSE)
+					set_anchored(FALSE)
 					state = 0
 				return
 			if(istype(P, /obj/item/circuitboard/computer) && !circuit)
 				if(!user.transferItemToLoc(P, src))
 					return
-				playsound(src, 'sound/items/deconstruct.ogg', 50, 1)
+				playsound(src, 'sound/items/deconstruct.ogg', 50, TRUE)
 				to_chat(user, "<span class='notice'>You place [P] inside the frame.</span>")
 				icon_state = "1"
 				circuit = P
@@ -71,8 +71,10 @@
 			if(istype(P, /obj/item/stack/cable_coil))
 				if(!P.tool_start_check(user, amount=5))
 					return
+				if(state != 2)
+					return
 				to_chat(user, "<span class='notice'>You start adding cables to the frame...</span>")
-				if(P.use_tool(src, user, 20, 5, 50, CALLBACK(src, .proc/check_state, 2)))
+				if(P.use_tool(src, user, 20, volume=50, amount=5))
 					to_chat(user, "<span class='notice'>You add cables to the frame.</span>")
 					state = 3
 					icon_state = "3"
@@ -90,9 +92,11 @@
 			if(istype(P, /obj/item/stack/sheet/glass))
 				if(!P.tool_start_check(user, amount=2))
 					return
-				playsound(src, 'sound/items/deconstruct.ogg', 50, 1)
+				if(state != 3)
+					return
+				playsound(src, 'sound/items/deconstruct.ogg', 50, TRUE)
 				to_chat(user, "<span class='notice'>You start to put in the glass panel...</span>")
-				if(P.use_tool(src, user, 20, 2, 0, CALLBACK(src, .proc/check_state, 3)))
+				if(P.use_tool(src, user, 20, amount=2))
 					to_chat(user, "<span class='notice'>You put in the glass panel.</span>")
 					state = 4
 					src.icon_state = "4"
@@ -109,14 +113,51 @@
 			if(P.tool_behaviour == TOOL_SCREWDRIVER)
 				P.play_tool_sound(src)
 				to_chat(user, "<span class='notice'>You connect the monitor.</span>")
-				var/obj/B = new circuit.build_path (loc, circuit)
+
-				B.setDir(dir)
+				var/obj/machinery/new_machine = new circuit.build_path(loc)
-				transfer_fingerprints_to(B)
+				new_machine.setDir(dir)
+				transfer_fingerprints_to(new_machine)
+
+				if(istype(new_machine, /obj/machinery/computer))
+					var/obj/machinery/computer/new_computer = new_machine
+
+					// Machines will init with a set of default components.
+					// Triggering handle_atom_del will make the machine realise it has lost a component_parts and then deconstruct.
+					// Move to nullspace so we don't trigger handle_atom_del, then qdel.
+					// Finally, replace new machine's parts with this frame's parts.
+					if(new_computer.circuit)
+						// Move to nullspace and delete.
+						new_computer.circuit.moveToNullspace()
+						QDEL_NULL(new_computer.circuit)
+					for(var/old_part in new_computer.component_parts)
+						var/atom/movable/movable_part = old_part
+						// Move to nullspace and delete.
+						movable_part.moveToNullspace()
+						qdel(movable_part)
+
+					// Set anchor state and move the frame's parts over to the new machine.
+					// Then refresh parts and call on_construction().
+					new_computer.set_anchored(anchored)
+					new_computer.component_parts = list()
+
+					circuit.forceMove(new_computer)
+					new_computer.component_parts += circuit
+					new_computer.circuit = circuit
+
+					for(var/new_part in src)
+						var/atom/movable/movable_part = new_part
+						movable_part.forceMove(new_computer)
+						new_computer.component_parts += movable_part
+
+					new_computer.RefreshParts()
+					new_computer.on_construction()
+
 				qdel(src)
 				return
 	if(user.a_intent == INTENT_HARM)
 		return ..()
 
+
 /obj/structure/frame/computer/deconstruct(disassembled = TRUE)
 	if(!(flags_1 & NODECONSTRUCT_1))
 		if(state == 4)
@@ -127,13 +168,12 @@
 	..()
 
 /obj/structure/frame/computer/AltClick(mob/user)
-	. = ..()
+	..()
-	if(!isliving(user) || !user.canUseTopic(src, BE_CLOSE, ismonkey(user)))
+	if(!user.canUseTopic(src, BE_CLOSE, TRUE, FALSE))
 		return
 
 	if(anchored)
 		to_chat(usr, "<span class='warning'>You must unwrench [src] before rotating it!</span>")
-		return TRUE
+		return
 
 	setDir(turn(dir, -90))
-	return TRUE

code/game/machinery/constructable_frame.dm

@@ -208,6 +208,8 @@
 						new_machine.component_parts = list()
 
 						circuit.forceMove(new_machine)
+						// TODO: make sleepers not shit out parts PROPERLY THIS TIME.
+						new_machine.circuit.moveToNullspace()
 						new_machine.component_parts += circuit
 						new_machine.circuit = circuit