diff --git a/code/__DEFINES/misc.dm b/code/__DEFINES/misc.dm
index 535e7a1010a3cb..b8ce480d424ce0 100644
--- a/code/__DEFINES/misc.dm
+++ b/code/__DEFINES/misc.dm
@@ -411,4 +411,6 @@ var/global/list/ghost_others_options = list(GHOST_OTHERS_SIMPLE, GHOST_OTHERS_DE
 #define TURF_DECAL_DIRT "dirt"
 
 //Error handler defines
-#define ERROR_USEFUL_LEN 2
\ No newline at end of file
+#define ERROR_USEFUL_LEN 2
+
+#define OPPOSITE_DIR(D) turn(D, 180)
\ No newline at end of file
diff --git a/code/_onclick/hud/human.dm b/code/_onclick/hud/human.dm
index 09df40b8dd763c..fa0868d583215f 100644
--- a/code/_onclick/hud/human.dm
+++ b/code/_onclick/hud/human.dm
@@ -302,6 +302,9 @@
 	pull_icon.screen_loc = ui_pull_resist
 	static_inventory += pull_icon
 
+	mymob.fov = new /obj/screen/fov()
+	static_inventory += mymob.fov
+
 	lingchemdisplay = new /obj/screen/ling/chems()
 	infodisplay += lingchemdisplay
 
diff --git a/code/_onclick/hud/screen_objects.dm b/code/_onclick/hud/screen_objects.dm
index 476423ddcecb36..dcc79ee5090640 100644
--- a/code/_onclick/hud/screen_objects.dm
+++ b/code/_onclick/hud/screen_objects.dm
@@ -691,4 +691,13 @@
 
 /obj/screen/splash/Destroy()
 	holder.screen -= src
-	return ..()
\ No newline at end of file
+	return ..()
+
+/obj/screen/fov
+	icon = 'icons/mob/vision_cone.dmi'
+	icon_state = "combat"
+	name = " "
+	screen_loc = "1,1"
+	mouse_opacity = 0
+	layer = HUD_LAYER
+	plane = HUD_PLANE
\ No newline at end of file
diff --git a/code/datums/hud.dm b/code/datums/hud.dm
index 75adb165d3ae4f..4284fc2bb3cca2 100644
--- a/code/datums/hud.dm
+++ b/code/datums/hud.dm
@@ -48,6 +48,7 @@ var/datum/atom_hud/huds = list( \
 		return
 	for(var/i in hud_icons)
 		M.client.images -= A.hud_list[i]
+		M.client.hidden_images -= A.hud_list[i]
 
 /datum/atom_hud/proc/add_hud_to(mob/M)
 	if(!M)
@@ -66,9 +67,15 @@ var/datum/atom_hud/huds = list( \
 /datum/atom_hud/proc/add_to_single_hud(mob/M, atom/A) //unsafe, no sanity apart from client
 	if(!M || !M.client || !A)
 		return
+	var/in_cone = FALSE
+	if(A in cone(M, OPPOSITE_DIR(M.dir), view(10, M)))
+		in_cone = TRUE
 	for(var/i in hud_icons)
 		if(A.hud_list[i])
-			M.client.images |= A.hud_list[i]
+			if(in_cone)
+				M.client.hidden_images |= A.hud_list[i]
+			else
+				M.client.images |= A.hud_list[i]
 
 //MOB PROCS
 /mob/proc/reload_huds()
diff --git a/code/modules/mob/living/emote.dm b/code/modules/mob/living/emote.dm
index 2b0e14350c83cf..d2522a914ee061 100644
--- a/code/modules/mob/living/emote.dm
+++ b/code/modules/mob/living/emote.dm
@@ -459,6 +459,7 @@
 	message = "spins around dizzily!"
 
 /datum/emote/living/spin/run_emote(mob/user)
+	user.client.move_delay = (user.movement_delay() * 2) + world.time
 	user.spin(20, 1)
 	if(istype(user, /mob/living/silicon/robot))
 		var/mob/living/silicon/robot/R = user
diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index 6142f2ccd716be..ef7ce7ec7144ce 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -443,6 +443,12 @@
 	if (s_active && !(s_active.ClickAccessible(src, depth=STORAGE_VIEW_DEPTH) || s_active.Adjacent(src)))
 		s_active.close(src)
 
+	for(var/mob/M in oview(src))
+		if(M.client && (src in cone(M, OPPOSITE_DIR(M.dir), view(10, M))))
+			M.update_vision_cone()
+
+	update_vision_cone()
+
 /mob/living/movement_delay(ignorewalk = 0)
 	. = ..()
 	if(isopenturf(loc) && !is_flying())
@@ -915,3 +921,8 @@
 					  "[C] topples over [src]!", \
 					  "[C] leaps out of [src]'s way!")]</span>")
 	C.Weaken(2)
+
+
+/mob/living/setDir(newdir)
+	..()
+	update_vision_cone()
\ No newline at end of file
diff --git a/code/modules/mob/mob.dm b/code/modules/mob/mob.dm
index be7b382a87fd12..834cbb84d67973 100644
--- a/code/modules/mob/mob.dm
+++ b/code/modules/mob/mob.dm
@@ -665,6 +665,7 @@ var/next_mob_id = 0
 	else
 		if(layer == LYING_MOB_LAYER)
 			layer = initial(layer)
+	update_vision_cone()
 	update_transform()
 	update_action_buttons_icon(status_only=TRUE)
 	if(isliving(src))
diff --git a/code/modules/mob/vision_cone.dm b/code/modules/mob/vision_cone.dm
new file mode 100644
index 00000000000000..c19cf75fbdabe7
--- /dev/null
+++ b/code/modules/mob/vision_cone.dm
@@ -0,0 +1,91 @@
+/mob
+	var/obj/screen/fov = null//The screen object because I can't figure out how the hell TG does their screen objects so I'm just using legacy code.
+
+client/
+	var/list/hidden_atoms = list()
+	var/list/hidden_mobs = list()
+	var/list/hidden_images = list()
+
+
+
+//Procs
+/atom/proc/InCone(atom/center = usr, dir = NORTH)
+	if(get_dist(center, src) == 0 || src == center) return 0
+	var/d = get_dir(center, src)
+	if(!d || d == dir) return 1
+	if(dir & (dir-1))
+		return (d & ~dir) ? 0 : 1
+	if(!(d & dir)) return 0
+	var/dx = abs(x - center.x)
+	var/dy = abs(y - center.y)
+	if(dx == dy) return 1
+	if(dy > dx)
+		return (dir & (NORTH|SOUTH)) ? 1 : 0
+	return (dir & (EAST|WEST)) ? 1 : 0
+
+/mob/dead/InCone(mob/center = usr, dir = NORTH)//So ghosts aren't calculated.
+	return
+
+/proc/cone(atom/center = usr, dir = NORTH, list/list = oview(center))
+	for(var/atom/A in list)
+		if(!A.InCone(center, dir))
+			list -= A
+	return list
+
+/mob/proc/update_vision_cone()
+	return
+
+/mob/living/update_vision_cone()
+	if(src.client)
+		var/image/I = null
+		for(I in src.client.hidden_atoms)
+			I.override = 0
+			client.images -= I
+			qdel(I)
+		for(var/hidden_hud in client.hidden_images)
+			client.images += hidden_hud
+			client.hidden_images -= hidden_hud
+		rest_cone_act()
+		src.client.hidden_atoms = list()
+		src.client.hidden_mobs = list()
+		client.hidden_images = list()
+		src.fov.dir = src.dir
+		if(fov.alpha != 0)
+			var/mob/living/M
+			for(M in cone(src, OPPOSITE_DIR(src.dir), view(10, src)))
+				I = image("split", M)
+				I.override = 1
+				src.client.images += I
+				src.client.hidden_atoms += I
+				src.client.hidden_mobs += M
+				if(src.pulling == M)//If we're pulling them we don't want them to be invisible, too hard to play like that.
+					I.override = 0
+		for(var/image/HUD in client.images)
+			if(HUD.icon != 'icons/mob/hud.dmi')
+				continue
+			for(var/mob/living/M in client.hidden_mobs)
+				if(HUD.loc == M)
+					client.hidden_images += HUD
+					client.images -= HUD
+					break
+	else
+		return
+
+/mob/proc/rest_cone_act()//For showing and hiding the cone when you rest or lie down.
+	if(resting || lying)
+		hide_cone()
+	else
+		show_cone()
+
+//Making these generic procs so you can call them anywhere.
+/mob/proc/show_cone()
+	if(src.fov)
+		src.fov.alpha = 255
+
+/mob/proc/hide_cone()
+	if(src.fov)
+		src.fov.alpha = 0
+
+
+
+
diff --git a/icons/mob/vision_cone.dmi b/icons/mob/vision_cone.dmi
new file mode 100644
index 00000000000000..f77e5973a2dbfb
Binary files /dev/null and b/icons/mob/vision_cone.dmi differ
diff --git a/tgstation.dme b/tgstation.dme
index 056f2cb2bf1f25..33f43be9a03c03 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -1395,6 +1395,7 @@
 #include "code\modules\mob\status_procs.dm"
 #include "code\modules\mob\transform_procs.dm"
 #include "code\modules\mob\update_icons.dm"
+#include "code\modules\mob\vision_cone.dm"
 #include "code\modules\mob\camera\camera.dm"
 #include "code\modules\mob\dead\death.dm"
 #include "code\modules\mob\dead\observer\login.dm"