bugfix: APC usability again. (#4486)

* Update apc.dm

* MEGAPROVERKA slaying.

* textiki

* Ahem.

* Deleting dead code.

code/_onclick/ai.dm

@@ -176,7 +176,7 @@
 // APC
 
 /obj/machinery/power/apc/AICtrlClick(mob/living/user) // turns off/on APCs.
-	if(!can_use(user, TRUE))
+	if(!can_use(user))
 		to_chat(user, "<span class='warning'>AI control for \the [src] interface has been disabled.</span>")
 		return
 	toggle_breaker(user)

code/modules/power/apc.dm

@@ -752,7 +752,7 @@
 
 /obj/machinery/power/apc/CtrlClick(mob/user)
 	SEND_SIGNAL(src, COMSIG_CLICK_CTRL, user)
-	if(!can_use(usr, TRUE) || (is_locked(usr)))
+	if(!can_use(usr) || (is_locked(usr)))
 		return
 	toggle_breaker(user)
 
@@ -1107,26 +1107,29 @@
 		INVOKE_ASYNC(light, TYPE_PROC_REF(/obj/machinery/light, update), FALSE)
 
 
-/obj/machinery/power/apc/proc/can_use(mob/user, loud = FALSE) //used by attack_hand() and Topic()
+/obj/machinery/power/apc/proc/can_use(mob/user) //used by attack_hand() and Topic()
 	if(stat & BROKEN)
 		return FALSE
 	if(user.can_admin_interact())
 		return TRUE
 
 	autoflag = 5
-	if(ispAI(user))
-		var/mob/living/silicon/pai/pAI = user
-		if(!pAI.syndipai || !pAI.ai_capability || pAI.capa_is_cooldown)
-			return FALSE
-	else if(issilicon(user))
-		var/mob/living/silicon/ai/AI = user
-		var/mob/living/silicon/robot/robot = user
-		if(aidisabled || malfhack && istype(malfai) && ((istype(AI) && malfai != AI && malfai != AI.parent) || (istype(robot) && !(robot in malfai.connected_robots))))
-			if(!loud)
-				to_chat(user, span_danger("[src] has AI control disabled!"))
-				user << browse(null, "window=apc")
-				user.unset_machine()
+
+	if(issilicon(user))
+		if(ispAI(user))
+			var/mob/living/silicon/pai/pAI = user
+			if(!pAI.syndipai || !pAI.ai_capability || pAI.capa_is_cooldown)
+				return FALSE
+		if(aidisabled)
 			return FALSE
+		if(malfhack && istype(malfai))					// Malfhacked APC can be used...
+			if(isAI(user))
+				var/mob/living/silicon/ai/AI = user		// Only by its hacker...
+				if(malfai != AI && malfai != AI.parent)
+					return FALSE
+			else if(!(user in malfai.connected_robots))	// Or by Malf's borg. No exception for other silicons.
+				return FALSE
+
 	else if(!in_range(src, user) || !isturf(loc))
 		return FALSE
 
@@ -1157,7 +1160,7 @@
 		return locked
 
 /obj/machinery/power/apc/ui_act(action, params)
-	if(..() || !can_use(usr, TRUE) || (is_locked(usr) && (action != "toggle_nightshift")))
+	if(..() || !can_use(usr) || (is_locked(usr) && (action != "toggle_nightshift")))
 		return
 	. = TRUE
 	switch(action)