Polishes up the reset_view proc, which is basically

`reset_perspective` from tgstation.

Also adds various support for remote viewing lenses - like cameras not
transmitting xray vision, among other things

Recommit because we're using different compiler versions

code/modules/mob/living/carbon/alien/humanoid/login.dm

@@ -1,6 +0,0 @@
-/mob/living/carbon/alien/humanoid/Login()
-	..()
-	if(!isturf(loc))
-		client.eye = loc
-		client.perspective = EYE_PERSPECTIVE
-	return

code/modules/mob/living/carbon/alien/life.dm

@@ -31,21 +31,31 @@
 	return 1
 
 /mob/living/carbon/alien/update_sight()
-	if(stat == DEAD || (XRAY in mutations))
-		sight |= SEE_TURFS
-		sight |= SEE_MOBS
-		sight |= SEE_OBJS
+	if(!client)
+		return
+	if(stat == DEAD)
+		grant_death_vision()
+		return
+
+	sight = SEE_MOBS
+	if(nightvision)
 		see_in_dark = 8
+		see_invisible = SEE_INVISIBLE_MINIMUM
+	else
+		see_in_dark = 4
 		see_invisible = SEE_INVISIBLE_LEVEL_TWO
-	else if(stat != DEAD)
-		sight |= SEE_MOBS
-		sight &= ~SEE_TURFS
-		sight &= ~SEE_OBJS
-		if(nightvision)
-			see_in_dark = 8
-			see_invisible = SEE_INVISIBLE_MINIMUM
-		else if(!nightvision)
-			see_in_dark = 4
-			see_invisible = 45
-		if(see_override)
-			see_invisible = see_override
+
+	if(client.eye != src)
+		var/atom/A = client.eye
+		if(A.update_remote_sight(src)) //returns 1 if we override all other sight updates.
+			return
+
+	for(var/obj/item/organ/internal/cyberimp/eyes/E in internal_organs)
+		sight |= E.vision_flags
+		if(E.dark_view)
+			see_in_dark = max(see_in_dark, E.dark_view)
+		if(E.see_invisible)
+			see_invisible = min(see_invisible, E.see_invisible)
+
+	if(see_override)
+		see_invisible = see_override

code/modules/mob/living/carbon/brain/life.dm

@@ -62,22 +62,5 @@
 
 		. = 1
 
-/mob/living/carbon/brain/handle_vision()
-	..()
-
-	if(stat == 2 || (XRAY in src.mutations))
-		sight |= SEE_TURFS
-		sight |= SEE_MOBS
-		sight |= SEE_OBJS
-		see_in_dark = 8
-		see_invisible = SEE_INVISIBLE_LEVEL_TWO
-	else if(stat != 2)
-		sight &= ~SEE_TURFS
-		sight &= ~SEE_MOBS
-		sight &= ~SEE_OBJS
-		see_in_dark = 2
-		see_invisible = SEE_INVISIBLE_LIVING
-	handle_hud_icons_health()
-
 /mob/living/carbon/brain/breathe()
 	return

code/modules/mob/living/carbon/carbon.dm

@@ -1039,3 +1039,49 @@ so that different stomachs can handle things in different ways VB*/
 /mob/living/carbon/proc/update_internals_hud_icon(internal_state = 0)
 	if(hud_used && hud_used.internals)
 		hud_used.internals.icon_state = "internal[internal_state]"
+
+//to recalculate and update the mob's total tint from tinted equipment it's wearing.
+/mob/living/carbon/proc/update_tint()
+	if(!tinted_weldhelh)
+		return
+	var/tinttotal = get_total_tint()
+	if(tinttotal >= TINT_BLIND)
+		overlay_fullscreen("tint", /obj/screen/fullscreen/blind)
+	else if(tinttotal >= TINT_IMPAIR)
+		overlay_fullscreen("tint", /obj/screen/fullscreen/impaired, 2)
+	else
+		clear_fullscreen("tint", 0)
+
+/mob/living/carbon/proc/get_total_tint()
+	. = 0
+	if(istype(head, /obj/item/clothing/head))
+		var/obj/item/clothing/head/HT = head
+		. += HT.tint
+	if(wear_mask)
+		. += wear_mask.tint
+
+/mob/living/carbon/human/get_total_tint()
+	. = ..()
+	if(glasses)
+		var/obj/item/clothing/glasses/G = glasses
+		. += G.tint
+
+
+//handle stuff to update when a mob equips/unequips a mask.
+/mob/living/proc/wear_mask_update(obj/item/clothing/C, toggle_off = 1)
+	update_inv_wear_mask()
+
+/mob/living/carbon/wear_mask_update(obj/item/clothing/C, toggle_off = 1)
+	if(C.tint || initial(C.tint))
+		update_tint()
+	update_inv_wear_mask()
+
+//handle stuff to update when a mob equips/unequips a headgear.
+/mob/living/carbon/proc/head_update(obj/item/I, forced)
+	if(istype(I, /obj/item/clothing))
+		var/obj/item/clothing/C = I
+		if(C.tint || initial(C.tint))
+			update_tint()
+	if(I.flags_inv & HIDEMASK || forced)
+		update_inv_wear_mask()
+	update_inv_head()

code/modules/mob/living/carbon/human/human.dm

@@ -724,6 +724,17 @@
 	if(istype(id))
 		return id
 
+
+
+/mob/living/carbon/human/update_sight()
+	if(!client)
+		return
+	if(stat == DEAD)
+		grant_death_vision()
+		return
+
+	species.update_sight(src)
+
 //Removed the horrible safety parameter. It was only being used by ninja code anyways.
 //Now checks siemens_coefficient of the affected area by default
 /mob/living/carbon/human/electrocute_act(shock_damage, obj/source, siemens_coeff = 1, safety = 0, override = 0, tesla_shock = 0)

code/modules/mob/living/carbon/human/inventory.dm

@@ -111,6 +111,13 @@
 		update_inv_gloves()
 	else if(I == glasses)
 		glasses = null
+		var/obj/item/clothing/glasses/G = I
+		if(G.tint)
+			update_tint()
+		if(G.prescription)
+			clear_fullscreen("nearsighted")
+		if(G.vision_flags || G.darkness_view || G.invis_override || G.invis_view)
+			update_sight()
 		update_inv_glasses()
 	else if(I == head)
 		head = null
@@ -118,6 +125,7 @@
 			update_hair()	//rebuild hair
 			update_fhair()
 			update_head_accessory()
+		head_update(I)
 		update_inv_head()
 	else if(I == r_ear)
 		r_ear = null
@@ -140,6 +148,7 @@
 		if(internal)
 			internal = null
 			update_internals_hud_icon(0)
+		wear_mask_update(I, toggle_off = FALSE)
 		sec_hud_set_ID()
 		update_inv_wear_mask()
 	else if(I == wear_id)
@@ -203,6 +212,7 @@
 				update_head_accessory(redraw_mob)
 			if(hud_list.len)
 				sec_hud_set_ID()
+			wear_mask_update(W, toggle_off = TRUE)
 			update_inv_wear_mask(redraw_mob)
 		if(slot_handcuffed)
 			handcuffed = W
@@ -247,6 +257,14 @@
 			update_inv_ears(redraw_mob)
 		if(slot_glasses)
 			glasses = W
+			var/obj/item/clothing/glasses/G = W
+			if(G.tint)
+				update_tint()
+			if(G.prescription)
+				if(disabilities & NEARSIGHTED)
+					overlay_fullscreen("nearsighted", /obj/screen/fullscreen/impaired, 1)
+			if(G.vision_flags || G.darkness_view || G.invis_override || G.invis_view)
+				update_sight()
 			update_inv_glasses(redraw_mob)
 		if(slot_gloves)
 			gloves = W
@@ -257,6 +275,7 @@
 				update_hair(redraw_mob)	//rebuild hair
 				update_fhair(redraw_mob)
 				update_head_accessory(redraw_mob)
+			head_update(W)
 			update_inv_head(redraw_mob)
 		if(slot_shoes)
 			shoes = W

code/modules/mob/living/carbon/human/life.dm

@@ -1,8 +1,5 @@
 //This file was auto-corrected by findeclaration.exe on 25.5.2012 20:42:32
 
-#define TINT_IMPAIR 2			//Threshold of tint level to apply weld mask overlay
-#define TINT_BLIND 3			//Threshold of tint level to obscure vision fully
-
 /mob/living/carbon/human
 
 	var/pressure_alert = 0
@@ -12,11 +9,9 @@
 	var/exposedtimenow = 0
 	var/firstexposed = 0
 	var/heartbeat = 0
-	var/tinttotal = 0				// Total level of visually impairing items
 
 /mob/living/carbon/human/Life()
 	fire_alert = 0 //Reset this here, because both breathe() and handle_environment() have a chance to set it.
-	tinttotal = tintcheck() //here as both hud updates and status updates call it
 	life_tick++
 
 	in_stasis = 0

code/modules/mob/living/carbon/human/species/species.dm

@@ -46,6 +46,7 @@
 
 	var/siemens_coeff = 1 //base electrocution coefficient
 
+	var/invis_sight = SEE_INVISIBLE_LIVING
 	var/darksight = 2
 	var/hazard_high_pressure = HAZARD_HIGH_PRESSURE   // Dangerously high pressure.
 	var/warning_high_pressure = WARNING_HIGH_PRESSURE // High pressure warning.
@@ -506,15 +507,6 @@
 			H.see_invisible = SEE_INVISIBLE_LIVING
 			H.seer = 0
 
-	//This checks how much the mob's eyewear impairs their vision
-	if(H.tinttotal >= TINT_IMPAIR)
-		if(tinted_weldhelh)
-			H.overlay_fullscreen("tint", /obj/screen/fullscreen/impaired, 2)
-		if(H.tinttotal >= TINT_BLIND)
-			H.EyeBlind(1)
-	else
-		H.clear_fullscreen("tint")
-
 	var/minimum_darkness_view = INFINITY
 	if(H.glasses)
 		if(istype(H.glasses, /obj/item/clothing/glasses))
@@ -684,3 +676,37 @@ It'll return null if the organ doesn't correspond, so include null checks when u
 	if(!(organ_slot in has_organ))
 		return null
 	return has_organ[organ_slot]
+
+
+/datum/species/proc/update_sight(mob/living/carbon/human/H)
+	H.sight = initial(H.sight)
+	H.see_in_dark = darksight
+	H.see_invisible = invis_sight
+
+	if(H.client.eye != H)
+		var/atom/A = H.client.eye
+		if(A.update_remote_sight(H)) //returns 1 if we override all other sight updates.
+			return
+
+	for(var/obj/item/organ/internal/cyberimp/eyes/E in H.internal_organs)
+		H.sight |= E.vision_flags
+		if(E.dark_view)
+			H.see_in_dark = E.dark_view
+		if(E.see_invisible)
+			H.see_invisible = min(H.see_invisible, E.see_invisible)
+
+	if(H.glasses)
+		var/obj/item/clothing/glasses/G = H.glasses
+		H.sight |= G.vision_flags
+		H.see_in_dark = max(G.darkness_view, H.see_in_dark)
+		if(G.invis_override)
+			H.see_invisible = G.invis_override
+		else
+			H.see_invisible = min(G.invis_view, H.see_invisible)
+
+	if(XRAY in H.mutations)
+		H.sight |= (SEE_TURFS|SEE_MOBS|SEE_OBJS)
+		H.see_in_dark = max(H.see_in_dark, 8)
+
+	if(H.see_override)	//Override all
+		H.see_invisible = H.see_override

code/modules/mob/living/carbon/life.dm

@@ -409,27 +409,33 @@
 	return 1
 
 /mob/living/carbon/update_sight()
+	if(!client)
+		return
 	if(stat == DEAD)
-		sight |= SEE_TURFS
-		sight |= SEE_MOBS
-		sight |= SEE_OBJS
-		see_in_dark = 8
-		see_invisible = SEE_INVISIBLE_LEVEL_TWO
-	else
-		sight &= ~(SEE_TURFS|SEE_MOBS|SEE_OBJS)
-		if(XRAY in mutations)
-			sight |= SEE_TURFS
-			sight |= SEE_MOBS
-			sight |= SEE_OBJS
-			see_in_dark = 8
-			see_invisible = SEE_INVISIBLE_LEVEL_TWO
+		grant_death_vision()
+		return
 
-		else
-			see_in_dark = 2
-			see_invisible = SEE_INVISIBLE_LIVING
+	see_invisible = initial(see_invisible)
+	see_in_dark = initial(see_in_dark)
+	sight = initial(sight)
 
-		if(see_override)
-			see_invisible = see_override
+	if(XRAY in mutations)
+		grant_xray_vision()
+
+	if(client.eye != src)
+		var/atom/A = client.eye
+		if(A.update_remote_sight(src)) //returns 1 if we override all other sight updates.
+			return
+
+	for(var/obj/item/organ/internal/cyberimp/eyes/E in internal_organs)
+		sight |= E.vision_flags
+		if(E.dark_view)
+			see_in_dark = max(see_in_dark,E.dark_view)
+		if(E.see_invisible)
+			see_invisible = min(see_invisible, E.see_invisible)
+
+	if(see_override)
+		see_invisible = see_override
 
 
 /mob/living/carbon/handle_hud_icons()

code/modules/mob/living/life.dm

@@ -238,6 +238,24 @@
 /mob/living/proc/update_sight()
 	return
 
+// Gives a mob the vision of being dead
+/mob/living/proc/grant_death_vision()
+	sight |= SEE_TURFS
+	sight |= SEE_MOBS
+	sight |= SEE_OBJS
+	see_in_dark = 8
+	see_invisible = SEE_INVISIBLE_OBSERVER
+
+// See through walls, dark, etc.
+// basically the same as death vision except you can't
+// see ghosts
+/mob/living/proc/grant_xray_vision()
+	sight |= SEE_TURFS
+	sight |= SEE_MOBS
+	sight |= SEE_OBJS
+	see_in_dark = 8
+	see_invisible = SEE_INVISIBLE_LEVEL_TWO
+
 /mob/living/proc/handle_hud_icons()
 	handle_hud_icons_health()
 	return

code/modules/mob/living/silicon/ai/ai.dm

@@ -1163,4 +1163,11 @@ var/list/ai_verbs_default = list(
 	to_chat(src, "You are also capable of hacking APCs, which grants you more points to spend on your Malfunction powers. The drawback is that a hacked APC will give you away if spotted by the crew. Hacking an APC takes 60 seconds.")
 	view_core() //A BYOND bug requires you to be viewing your core before your verbs update
 	verbs += /mob/living/silicon/ai/proc/choose_modules
-	malf_picker = new /datum/module_picker
+	malf_picker = new /datum/module_picker
+
+/mob/living/silicon/ai/reset_view(atom/A)
+	if(camera_light_on)
+		light_cameras()
+	if(istype(A, /obj/machinery/camera))
+		current = A
+	. = ..()

code/modules/mob/living/silicon/ai/life.dm

@@ -1,3 +1,8 @@
+#define POWER_RESTORATION_OFF 0
+#define POWER_RESTORATION_START 1
+#define POWER_RESTORATION_SEARCH_APC 2
+#define POWER_RESTORATION_APC_FOUND 3
+
 /mob/living/silicon/ai/Life()
 	//doesn't call parent because it's a horrible mess
 	if(stat == DEAD)
@@ -16,11 +21,16 @@
 		death()
 		return 0
 
-	if(malfhack)
-		if(malfhack.aidisabled)
-			to_chat(src, "<span class='danger'>ERROR: APC access disabled, hack attempt canceled.</span>")
-			malfhacking = 0
-			malfhack = null
+	if(!eyeobj || qdeleted(eyeobj) || !eyeobj.loc)
+		view_core()
+
+	if(machine)
+		machine.check_eye(src)
+
+	if(malfhack && malfhack.aidisabled)
+		to_chat(src, "<span class='danger'>ERROR: APC access disabled, hack attempt canceled.</span>")
+		malfhacking = 0
+		malfhack = null
 
 	if(aiRestorePowerRoutine)
 		adjustOxyLoss(1)
@@ -29,22 +39,9 @@
 
 	handle_stunned()
 
-	var/is_blind = 0 //THIS WAS JUST FUCKING 'blind' WHICH CONFLICTED WITH A NORMAL VARIABLE
 	var/area/my_area = get_area(src)
-	if(istype(my_area))
-		if(!my_area.power_equip && !is_type_in_list(loc, list(/obj/item, /obj/mecha)))
-			is_blind = 1 //HOW THE FUCK DID THAT EVEN COMPILE JESUS CHRIST
 
-	if(!is_blind)
-		sight |= SEE_TURFS
-		sight |= SEE_MOBS
-		sight |= SEE_OBJS
-
-		see_in_dark = 8
-		see_invisible = SEE_INVISIBLE_LEVEL_TWO
-
-		if(see_override)
-			see_invisible = see_override
+	if(!lacks_power())
 
 		if(aiRestorePowerRoutine == 2)
 			to_chat(src, "Alert cancelled. Power has been restored without our assistance.")
@@ -57,18 +54,12 @@
 
 
 	else
-		sight &= ~SEE_TURFS
-		sight &= ~SEE_MOBS
-		sight &= ~SEE_OBJS
-
 		overlay_fullscreen("blind", /obj/screen/fullscreen/blind)
 
-		see_in_dark = 0
-		see_invisible = SEE_INVISIBLE_LIVING
-
-		if(((!my_area.power_equip) || istype(T, /turf/space)) && !is_type_in_list(loc, list(/obj/item, /obj/mecha)))
+		if(lacks_power())
 			if(!aiRestorePowerRoutine)
 				aiRestorePowerRoutine = 1
+				update_sight()
 				to_chat(src, "<span class='danger'>You have lost power!</span>")
 				if(!is_special_character(src))
 					set_zeroth_law("")
@@ -78,7 +69,7 @@
 					sleep(50)
 					my_area = get_area(src)
 					T = get_turf(src)
-					if(my_area && my_area.power_equip && !istype(T, /turf/space))
+					if(!lacks_power())
 						to_chat(src, "Alert cancelled. Power has been restored without our assistance.")
 						aiRestorePowerRoutine = 0
 						return
@@ -115,12 +106,11 @@
 							aiRestorePowerRoutine = 2
 							return
 
-						if(my_area.power_equip)
-							if(!istype(T, /turf/space))
-								to_chat(src, "Alert cancelled. Power has been restored without our assistance.")
-								aiRestorePowerRoutine = 0
-								clear_fullscreen("blind")
-								return
+						if(!lacks_power())
+							to_chat(src, "Alert cancelled. Power has been restored without our assistance.")
+							aiRestorePowerRoutine = 0
+							clear_fullscreen("blind")
+							return
 
 						switch(PRP)
 							if(1)
@@ -170,4 +160,17 @@
 	if(client)
 		var/client/C = client
 		for(var/mob/living/carbon/human/H in view(eyeobj, 14))
-			C.images += H.hud_list[NATIONS_HUD]
+			C.images += H.hud_list[NATIONS_HUD]
+
+/mob/living/silicon/ai/update_sight()
+	see_invisible = initial(see_invisible)
+	see_in_dark = initial(see_in_dark)
+	sight = initial(sight)
+	if(aiRestorePowerRoutine)
+		sight = sight&~SEE_TURFS
+		sight = sight&~SEE_MOBS
+		sight = sight&~SEE_OBJS
+		see_in_dark = 0
+
+	if(see_override)
+		see_invisible = see_override

code/modules/mob/living/silicon/ai/logout.dm

@@ -2,9 +2,5 @@
 	..()
 	for(var/obj/machinery/ai_status_display/O in world) //change status
 		O.mode = 0
-	if(!isturf(loc))
-		if(client)
-			client.eye = loc
-			client.perspective = EYE_PERSPECTIVE
 	src.view_core()
-	return
+	return

code/modules/mob/living/silicon/pai/pai.dm

@@ -363,9 +363,6 @@
 		var/obj/item/device/pda/holder = card.loc
 		holder.pai = null
 
-	if(client)
-		client.perspective = EYE_PERSPECTIVE
-		client.eye = src
 	forceMove(get_turf(card))
 
 	card.forceMove(src)
@@ -487,9 +484,7 @@
 	visible_message("<span class=notice>[src] neatly folds inwards, compacting down to a rectangular card.</span>", "<span class=notice>You neatly fold inwards, compacting down to a rectangular card.</span>")
 
 	stop_pulling()
-	if(client)
-		client.perspective = EYE_PERSPECTIVE
-		client.eye = card
+	reset_view(card)
 
 // If we are being held, handle removing our holder from their inv.
 	var/obj/item/weapon/holder/H = loc

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

@@ -17,6 +17,7 @@
 	if(istype(O,/obj/item/borg/sight))
 		var/obj/item/borg/sight/S = O
 		sight_mode &= ~S.sight_mode
+		update_sight()
 
 	if(client)
 		client.screen -= O
@@ -52,6 +53,7 @@
 				if((cell.charge * 100 / cell.maxcharge) < B.powerneeded)
 					to_chat(src, "Not enough power to activate [B.name]!")
 					return
+	var/activated_thingy = null
 	if(!module_state_1)
 		O.mouse_opacity = initial(O.mouse_opacity)
 		module_state_1 = O
@@ -59,8 +61,7 @@
 		O.plane = HUD_PLANE
 		O.screen_loc = inv1.screen_loc
 		contents += O
-		if(istype(module_state_1,/obj/item/borg/sight))
-			sight_mode |= module_state_1:sight_mode
+		activated_thingy = O
 	else if(!module_state_2)
 		O.mouse_opacity = initial(O.mouse_opacity)
 		module_state_2 = O
@@ -68,8 +69,7 @@
 		O.plane = HUD_PLANE
 		O.screen_loc = inv2.screen_loc
 		contents += O
-		if(istype(module_state_2,/obj/item/borg/sight))
-			sight_mode |= module_state_2:sight_mode
+		activated_thingy = O
 	else if(!module_state_3)
 		O.mouse_opacity = initial(O.mouse_opacity)
 		module_state_3 = O
@@ -77,11 +77,12 @@
 		O.plane = HUD_PLANE
 		O.screen_loc = inv3.screen_loc
 		contents += O
-		if(istype(module_state_3,/obj/item/borg/sight))
-			sight_mode |= module_state_3:sight_mode
+		activated_thingy = O
 	else
 		to_chat(src, "You need to disable a module first!")
-	src.update_icons()
+	if(istype(activated_thingy,/obj/item/borg/sight))
+		update_sight()
+	update_icons()
 
 /mob/living/silicon/robot/proc/uneq_active()
 	uneq_module(module_active)

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

@@ -120,32 +120,38 @@
 	return 1
 
 /mob/living/silicon/robot/update_sight()
-	if(stat == DEAD || sight_mode & BORGXRAY)
+	if(!client)
+		return
+	if(stat == DEAD)
+		grant_death_vision()
+		return
+
+	see_invisible = initial(see_invisible)
+	see_in_dark = initial(see_in_dark)
+	sight = initial(sight)
+
+	if(client.eye != src)
+		var/atom/A = client.eye
+		if(A.update_remote_sight(src)) //returns 1 if we override all other sight updates.
+			return
+
+	if(sight_mode & BORGMESON)
 		sight |= SEE_TURFS
+		see_invisible = min(see_invisible, SEE_INVISIBLE_MINIMUM)
+		see_in_dark = 1
+
+	if(sight_mode & BORGXRAY)
+		sight |= (SEE_TURFS|SEE_MOBS|SEE_OBJS)
+		see_invisible = SEE_INVISIBLE_LIVING
+		see_in_dark = 8
+
+	if(sight_mode & BORGTHERM)
 		sight |= SEE_MOBS
-		sight |= SEE_OBJS
+		see_invisible = min(see_invisible, SEE_INVISIBLE_LIVING)
 		see_in_dark = 8
-		see_invisible = SEE_INVISIBLE_LEVEL_TWO
-	else
-		see_in_dark = 8
-		if(sight_mode & BORGMESON && sight_mode & BORGTHERM)
-			sight |= SEE_TURFS
-			sight |= SEE_MOBS
-			see_invisible = SEE_INVISIBLE_MINIMUM
-		else if(sight_mode & BORGMESON)
-			sight |= SEE_TURFS
-			see_invisible = SEE_INVISIBLE_MINIMUM
-			see_in_dark = 1
-		else if(sight_mode & BORGTHERM)
-			sight |= SEE_MOBS
-			see_invisible = SEE_INVISIBLE_LEVEL_TWO
-		else if(stat != DEAD)
-			sight &= ~SEE_MOBS
-			sight &= ~SEE_TURFS
-			sight &= ~SEE_OBJS
-			see_invisible = SEE_INVISIBLE_LEVEL_TWO
-		if(see_override)
-			see_invisible = see_override
+
+	if(see_override)
+		see_invisible = see_override
 
 /mob/living/silicon/robot/handle_hud_icons()
 	update_items()

code/modules/mob/living/simple_animal/bot/mulebot.dm

@@ -393,9 +393,8 @@
 		passenger = M
 		load = M
 		can_buckle = FALSE
-		if(M.client)
-			M.client.perspective = EYE_PERSPECTIVE
-			M.client.eye = src
+		// Not sure why this is done
+		reset_view(src)
 		return TRUE
 	return FALSE
 
@@ -423,9 +422,7 @@
 
 	if(ismob(load))
 		var/mob/M = load
-		if(M.client)
-			M.client.perspective = MOB_PERSPECTIVE
-			M.client.eye = M
+		M.reset_view(null)
 	unbuckle_mob()
 
 	if(load)
@@ -452,9 +449,7 @@
 		AM.pixel_y = initial(AM.pixel_y)
 		if(ismob(AM))
 			var/mob/M = AM
-			if(M.client)
-				M.client.perspective = MOB_PERSPECTIVE
-				M.client.eye = M
+			M.reset_view(null)
 
 /mob/living/simple_animal/bot/mulebot/call_bot()
 	..()

code/modules/mob/living/simple_animal/simple_animal.dm

@@ -706,6 +706,22 @@
 /mob/living/simple_animal/proc/sentience_act() //Called when a simple animal gains sentience via gold slime potion
 	return
 
+/mob/living/simple_animal/update_sight()
+	if(!client)
+		return
+	if(stat == DEAD)
+		grant_death_vision()
+		return
+
+	see_invisible = initial(see_invisible)
+	see_in_dark = initial(see_in_dark)
+	sight = initial(sight)
+
+	if(client.eye != src)
+		var/atom/A = client.eye
+		if(A.update_remote_sight(src)) //returns 1 if we override all other sight updates.
+			return
+
 /mob/living/simple_animal/SetEarDamage()
 	return
 

code/modules/mob/login.dm

@@ -43,12 +43,7 @@
 	sight |= SEE_SELF
 	..()
 
-	if(loc && !isturf(loc))
-		client.eye = loc
-		client.perspective = EYE_PERSPECTIVE
-	else
-		client.eye = src
-		client.perspective = MOB_PERSPECTIVE
+	reset_view(loc)
 
 
 	if(ckey in deadmins)

code/modules/mob/mob.dm

@@ -487,6 +487,7 @@ var/list/slot_equipment_priority = list( \
 		return 0 //Unsupported slot
 		//END HUMAN
 
+// If you're looking for `reset_perspective`, that's a synonym for this proc.
 /mob/proc/reset_view(atom/A)
 	if(client)
 		if(istype(A, /atom/movable))
@@ -499,8 +500,33 @@ var/list/slot_equipment_priority = list( \
 			else
 				client.perspective = EYE_PERSPECTIVE
 				client.eye = loc
-	return
+		return 1
 
+/mob/living/reset_view(atom/A)
+	. = ..()
+	if(.)
+		// Above check means the mob has a client
+		update_sight()
+		if(client.eye != src)
+			var/atom/AT = client.eye
+			AT.get_remote_view_fullscreens(src)
+		else
+			clear_fullscreen("remote_view", 0)
+		update_pipe_vision()
+
+/mob/dead/reset_view(atom/A)
+	if(client)
+		if(ismob(client.eye) && (client.eye != src))
+			// Note to self: Use `client.eye` for ghost following in place
+			// of periodic ghost updates
+			var/mob/target = client.eye
+			target.following_mobs -= src
+	. = ..()
+	if(.)
+		// Allows sharing HUDs with ghosts
+		if(hud_used)
+			client.screen = list()
+			hud_used.show_hud(hud_used.hud_version)
 
 /mob/proc/show_inv(mob/user)
 	user.set_machine(src)