Merge pull request #3562 from Neerti/7/5/2017_ai_detector

Adds the Anti-Surveillance Tool for Traitors.

code/datums/uplink/tools.dm

@@ -66,6 +66,14 @@
 			When in hacking mode this device will grant full access to any standard airlock within 20 to 40 seconds. \
 			This device will also be able to immediately access the last 6 to 8 hacked airlocks."
 
+/datum/uplink_item/item/tools/ai_detector
+	name = "Anti-Surveillance Tool"
+	item_cost = 20
+	path = /obj/item/device/multitool/ai_detector
+	desc = "This functions like a normal multitool, but includes an integrated camera network sensor that will warn the holder if they are being \
+	watched, by changing color and beeping.  It is able to detect both AI visual surveillance and security camera utilization from terminals, and \
+	will give different warnings by beeping and changing colors based on what it detects.  Only the holder can hear the warnings."
+
 /datum/uplink_item/item/tools/emag
 	name = "Cryptographic Sequencer"
 	item_cost = 30

code/game/machinery/camera/camera.dm

@@ -37,6 +37,8 @@
 
 	var/client_huds = list()
 
+	var/list/camera_computers_using_this = list()
+
 /obj/machinery/camera/New()
 	wires = new(src)
 	assembly = new(src)

code/game/machinery/computer/camera.dm

@@ -169,6 +169,7 @@
 
 	src.current_camera = C
 	if(current_camera)
+		current_camera.camera_computers_using_this.Add(src)
 		use_power = 2
 		var/mob/living/L = current_camera.loc
 		if(istype(L))
@@ -176,6 +177,7 @@
 
 /obj/machinery/computer/security/proc/reset_current()
 	if(current_camera)
+		current_camera.camera_computers_using_this.Remove(src)
 		var/mob/living/L = current_camera.loc
 		if(istype(L))
 			L.tracking_cancelled()

code/game/objects/items/devices/ai_detector.dm

@@ -0,0 +1,121 @@
+#define PROXIMITY_OFF_CAMERANET		"_no_camera"
+#define PROXIMITY_NONE				""
+#define PROXIMITY_NEAR				"_yellow"
+#define PROXIMITY_ON_SCREEN			"_red"
+#define PROXIMITY_TRACKING			"_tracking"
+#define PROXIMITY_TRACKING_FAIL		"_tracking_fail"
+
+// This is another syndie-multitool, except this one detects when the AI and/or Security is peeping on the holder.
+
+/obj/item/device/multitool/ai_detector
+	var/range_alert = 7			// Will turn red if the AI can observe its holder.
+	var/range_warning = 14		// Will turn yellow if the AI's eye is near the holder.
+	var/detect_state = PROXIMITY_NONE
+	origin_tech = list(TECH_MAGNET = 2, TECH_ENGINEERING = 2, TECH_ILLEGAL = 2)
+
+/obj/item/device/multitool/ai_detector/New()
+	// It's really really unlikely for the view range to change.  But why not be futureproof anyways?
+	range_alert = world.view
+	range_warning = world.view * 2
+	processing_objects += src
+	..()
+
+/obj/item/device/multitool/ai_detector/Destroy()
+	processing_objects -= src
+	return ..()
+
+/obj/item/device/multitool/ai_detector/process()
+	var/old_detect_state = detect_state
+	var/new_detect_state = detect_ai()
+	detect_state = new_detect_state
+	update_icon()
+	update_warning(old_detect_state, new_detect_state)
+	return
+
+// This also detects security using cameras.
+/obj/item/device/multitool/ai_detector/proc/detect_ai()
+	var/mob/living/carrier = isliving(loc) ? loc : null
+
+	// First, let's check if any AIs are actively tracking them.
+	for(var/mob/living/silicon/ai/AI in silicon_mob_list)
+		if(carrier && AI.cameraFollow == carrier)
+			if(!carrier.tracking_status()) // Successful tracking returns a 0, so we need to invert it.
+				return PROXIMITY_TRACKING
+			else
+				return PROXIMITY_TRACKING_FAIL
+
+	// If there's no turf then cameras won't do anything anyways.
+	var/turf/T = get_turf(src)
+	if(!T)
+		return PROXIMITY_OFF_CAMERANET
+
+	// Security is also a concern, so we need to see if any cameras are in use.
+	// Note that this will trigger upon the security console being used, regardless if someone is actually watching,
+	// because there isn't a nice way to test if someone is actually looking.  Probably better that way too.
+	var/list/our_local_area = range(range_alert, T)
+	for(var/obj/machinery/camera/C in our_local_area)
+		if(C.camera_computers_using_this.len) // Only check cameras actively being used.
+			var/list/their_local_area = C.can_see(range_alert)
+			if(T in their_local_area)
+				return PROXIMITY_ON_SCREEN
+
+	// Now for the somewhat harder AI cameranet checks.
+
+	// Check if we are even on the cameranet.
+	if(!cameranet.checkVis(T))
+		return PROXIMITY_OFF_CAMERANET
+
+	var/datum/chunk/chunk = cameranet.getChunk(T.x, T.y, T.z)
+	if(!chunk)
+		return PROXIMITY_OFF_CAMERANET
+
+	// Check if the AI eye is able to see us, or if it's almost able to.
+	if(chunk.seenby.len)
+		for(var/mob/observer/eye/aiEye/A in chunk.seenby)
+			var/turf/detect_turf = get_turf(A)
+			if(get_dist(T, detect_turf) <= range_alert)
+				return PROXIMITY_ON_SCREEN
+			if(get_dist(T, detect_turf) <= range_warning)
+				return PROXIMITY_NEAR
+
+	// If we reach this point, AI or sec isn't near us.
+	return PROXIMITY_NONE
+
+/obj/item/device/multitool/ai_detector/update_icon()
+	icon_state = "[initial(icon_state)][detect_state]"
+
+/obj/item/device/multitool/ai_detector/proc/update_warning(var/old_state, var/new_state)
+	var/mob/living/carrier = isliving(loc) ? loc : null
+
+	// Now to warn our holder, if the state changes.
+	if(!carrier)
+		return
+
+	if(new_state != old_state)
+		switch(new_state)
+			if(PROXIMITY_OFF_CAMERANET)
+				to_chat(carrier, "<span class='notice'>\icon[src] Now outside of camera network.</span>")
+				carrier << 'sound/machines/defib_failed.ogg'
+			if(PROXIMITY_NONE)
+				to_chat(carrier, "<span class='notice'>\icon[src] Now within camera network, AI and cameras unfocused.</span>")
+				carrier << 'sound/machines/defib_safetyOff.ogg'
+			if(PROXIMITY_NEAR)
+				to_chat(carrier, "<span class='warning'>\icon[src] Warning: AI focus at nearby location.</span>")
+				carrier << 'sound/machines/defib_SafetyOn.ogg'
+			if(PROXIMITY_ON_SCREEN)
+				to_chat(carrier, "<font size='3'><span class='danger'>\icon[src] Alert: AI or camera focused at current location!</span></font>")
+				carrier <<'sound/machines/defib_ready.ogg'
+			if(PROXIMITY_TRACKING)
+				to_chat(carrier, "<font size='3'><span class='danger'>\icon[src] Danger: AI is actively tracking you!</span></font>")
+				carrier << 'sound/machines/defib_success.ogg'
+			if(PROXIMITY_TRACKING_FAIL)
+				to_chat(carrier, "<font size='3'><span class='danger'>\icon[src] Danger: AI is attempting to actively track you, but you are outside of the camera network!</span></font>")
+				carrier <<'sound/machines/defib_ready.ogg'
+
+
+#undef PROXIMITY_OFF_CAMERANET
+#undef PROXIMITY_NONE
+#undef PROXIMITY_NEAR
+#undef PROXIMITY_ON_SCREEN
+#undef PROXIMITY_TRACKING
+#undef PROXIMITY_TRACKING_FAIL

polaris.dme

@@ -776,6 +776,7 @@
 #include "code\game\objects\items\shooting_range.dm"
 #include "code\game\objects\items\toys.dm"
 #include "code\game\objects\items\trash.dm"
+#include "code\game\objects\items\devices\ai_detector.dm"
 #include "code\game\objects\items\devices\aicard.dm"
 #include "code\game\objects\items\devices\binoculars.dm"
 #include "code\game\objects\items\devices\chameleonproj.dm"