Fixes being able to use binoculars while looking up or down. (#14829)

code/game/objects/items.dm

@@ -682,9 +682,15 @@ modules/mob/mob_movement.dm if you move you will be zoomed out
 modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 */
 //Looking through a scope or binoculars should /not/ improve your periphereal vision. Still, increase viewsize a tiny bit so that sniping isn't as restricted to NSEW
-/obj/item/proc/zoom(var/mob/M, var/tileoffset = 14, var/viewsize = 9, var/do_device_check = TRUE) //tileoffset is client view offset in the direction the user is facing. viewsize is how far out this thing zooms. 7 is normal view
+/obj/item/proc/zoom(var/mob/M, var/tileoffset = 14, var/viewsize = 9, var/do_device_check = TRUE, var/show_zoom_message = TRUE) //tileoffset is client view offset in the direction the user is facing. viewsize is how far out this thing zooms. 7 is normal view
 	if (!M)
 		return
+	if(!isliving(M))
+		return
+	var/mob/living/L = M
+	if(L.z_eye)
+		to_chat(L, SPAN_WARNING("You can't do that from here!"))
+		return
 
 	var/devicename
 
@@ -728,7 +734,8 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 				M.client.pixel_x = -viewoffset
 				M.client.pixel_y = 0
 
-		M.visible_message("<b>[M]</b> peers through \the [zoomdevicename ? "[zoomdevicename] of \the [src.name]" : "[src.name]"].")
+		if(show_zoom_message)
+			M.visible_message("<b>[M]</b> peers through \the [zoomdevicename ? "[zoomdevicename] of \the [src.name]" : "[src.name]"].")
 
 	else
 		M.client.view = world.view
@@ -740,7 +747,8 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 		M.client.pixel_y = 0
 
 		if(!cannotzoom)
-			M.visible_message("[zoomdevicename ? "<b>[M]</b> looks up from \the [src.name]" : "<b>[M]</b> lowers \the [src.name]"].")
+			if(show_zoom_message)
+				M.visible_message("[zoomdevicename ? "<b>[M]</b> looks up from \the [src.name]" : "<b>[M]</b> lowers \the [src.name]"].")
 
 	if(ishuman(M))
 		var/mob/living/carbon/human/H = M

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

@@ -15,7 +15,7 @@
 	var/viewsize = 7
 
 /obj/item/device/binoculars/attack_self(mob/user)
-	zoom(user,tileoffset,viewsize)
+	zoom(user,tileoffset,viewsize, show_zoom_message = FALSE)
 
 /obj/item/device/binoculars/high_power
 	name = "high power binoculars"

html/changelogs/mattatlas-exploit.yml

@@ -0,0 +1,42 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes:
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.
+author: MattAtlas
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes:
+  - bugfix: "Fixed binocular message spam."
+  - bugfix: "Fixed being able to use your binoculars while looking down or up."