Alarm system overhaul

code/modules/nano/interaction/base.dm

@@ -17,3 +17,18 @@
 	else if (restrained() || lying || stat || stunned || weakened)
 		return STATUS_UPDATE					// update only (orange visibility)
 	return STATUS_INTERACTIVE
+
+/mob/living/silicon/ai/shared_nano_interaction()
+	if(lacks_power())
+		return STATUS_CLOSE
+	if (check_unable(1, 0))
+		return STATUS_CLOSE
+	return ..()
+
+/mob/living/silicon/robot/shared_nano_interaction()
+	. = STATUS_INTERACTIVE
+	if(cell.charge <= 0)
+		return STATUS_CLOSE
+	if(lockcharge)
+		. = STATUS_DISABLED
+	return min(., ..())

code/modules/nano/interaction/self.dm

@@ -0,0 +1,9 @@
+/*
+	This state checks that the src_object is the same the as user
+*/
+/var/global/datum/topic_state/self_state/self_state = new()
+
+/datum/topic_state/self_state/can_use_topic(var/src_object, var/mob/user)
+	if(src_object != user)
+		return STATUS_CLOSE
+	return user.shared_nano_interaction()