Eyepatch Flopping + Double Eyepatch (#2362)

## About The Pull Request

You can now alt+click any eyepatch (normal, thermal, sechud) to switch
the side that it covers. Examine tells you which side it currently
covers.

You can also add another eyepatch to an eyepatch (only normal because I
don't want to make special ones for the other two types when the first
will probably see the light of day once) to make a DOUBLE EYEPATCH, aka
a blindfold. Interacting with the blindfold in hand gives you the two
eyepatches back.

## Why It's Good For The Game

Switching eyepatch to decide which side you wear it on is just... good,
because character and like, stuff.

Double eyepatch is a full-on meme that makes me giggle a LITTLE but I'm
fine with it not existing.

## Changelog

:cl:
add: Adds the double eyepatch, a blindfold made by adding a normal
eyepatch to another
tweak: Eyepatches can now swap sides with ALT+CLICK
/:cl:

code/modules/clothing/glasses/_glasses.dm

@@ -128,8 +128,31 @@
 /obj/item/clothing/glasses/eyepatch
 	name = "eyepatch"
 	desc = "Yarr."
-	icon_state = "eyepatch"
-	item_state = "eyepatch"
+	icon_state = "eyepatch-0"
+	item_state = "eyepatch-0"
+	var/flipped = FALSE
+
+/obj/item/clothing/glasses/eyepatch/AltClick(mob/user)
+	. = ..()
+	flipped = !flipped
+	to_chat(user, "<span class='notice'>You shift the eyepatch to cover the [flipped == 0 ? "right" : "left"] eye.</span>")
+	icon_state = "eyepatch-[flipped]"
+	item_state = "eyepatch-[flipped]"
+	update_appearance()
+
+/obj/item/clothing/glasses/eyepatch/examine(mob/user)
+	. = ..()
+	. += "It is currently aligned to the [flipped == 0 ? "right" : "left"] side."
+
+/obj/item/clothing/glasses/eyepatch/attackby(obj/item/I, mob/user, params)
+	. = ..()
+	if(istype(I, /obj/item/clothing/glasses/eyepatch))
+		var/obj/item/clothing/glasses/eyepatch/old_patch = I
+		var/obj/item/clothing/glasses/blindfold/eyepatch/double_patch = new/obj/item/clothing/glasses/blindfold/eyepatch
+		double_patch.forceMove(user.drop_location())
+		to_chat(user, "<span class='notice'>You combine the eyepatches with a knot.</span>")
+		old_patch.Destroy()
+		Destroy()
 
 /obj/item/clothing/glasses/monocle
 	name = "monocle"
@@ -348,6 +371,21 @@
 		M.color = "#[H.eye_color]"
 		. += M
 
+/obj/item/clothing/glasses/blindfold/eyepatch
+	name = "double eyepatch"
+	desc = "For those pirates who've been at it a while. May interfere with navigating ability."
+	icon_state = "eyepatchd"
+	item_state = "eyepatchd"
+
+/obj/item/clothing/glasses/blindfold/eyepatch/attack_self(mob/user)
+	. = ..()
+	var/obj/item/clothing/glasses/eyepatch/patch_one = new/obj/item/clothing/glasses/eyepatch
+	var/obj/item/clothing/glasses/eyepatch/patch_two = new/obj/item/clothing/glasses/eyepatch
+	patch_one.forceMove(user.drop_location())
+	patch_two.forceMove(user.drop_location())
+	to_chat(user, "<span class='notice'>You undo the knot on the eyepatches.</span>")
+	Destroy()
+
 /obj/item/clothing/glasses/sunglasses/big
 	desc = "Strangely ancient technology used to help provide rudimentary eye cover. Larger than average enhanced shielding blocks flashes."
 	icon_state = "bigsunglasses"
@@ -411,8 +449,21 @@
 /obj/item/clothing/glasses/thermal/eyepatch
 	name = "optical thermal eyepatch"
 	desc = "An eyepatch with built-in thermal optics."
-	icon_state = "eyepatch"
-	item_state = "eyepatch"
+	icon_state = "eyepatch-0"
+	item_state = "eyepatch-0"
+	var/flipped = FALSE
+
+/obj/item/clothing/glasses/thermal/eyepatch/AltClick(mob/user)
+	. = ..()
+	flipped = !flipped
+	to_chat(user, "<span class='notice'>You shift the eyepatch to cover the [flipped == 0 ? "right" : "left"] eye.</span>")
+	icon_state = "eyepatch-[flipped]"
+	item_state = "eyepatch-[flipped]"
+	update_appearance()
+
+/obj/item/clothing/glasses/thermal/eyepatch/examine(mob/user)
+	. = ..()
+	. += "It is currently aligned to the [flipped == 0 ? "right" : "left"] side."
 
 /obj/item/clothing/glasses/cold
 	name = "cold goggles"

code/modules/clothing/glasses/hud.dm

@@ -128,7 +128,20 @@
 /obj/item/clothing/glasses/hud/security/sunglasses/eyepatch
 	name = "eyepatch HUD"
 	desc = "A heads-up display that connects directly to the optical nerve of the user, replacing the need for that useless eyeball."
-	icon_state = "hudpatch"
+	icon_state = "hudpatch-0"
+	var/flipped = FALSE
+
+/obj/item/clothing/glasses/hud/security/sunglasses/eyepatch/AltClick(mob/user)
+	. = ..()
+	flipped = !flipped
+	to_chat(user, "<span class='notice'>You shift the hudpatch to cover the [flipped == 0 ? "right" : "left"] eye.</span>")
+	icon_state = "hudpatch-[flipped]"
+	item_state = "hudpatch-[flipped]"
+	update_appearance()
+
+/obj/item/clothing/glasses/hud/security/sunglasses/eyepatch/examine(mob/user)
+	. = ..()
+	. += "It is currently aligned to the [flipped == 0 ? "right" : "left"] side."
 
 /obj/item/clothing/glasses/hud/security/sunglasses
 	name = "security HUDSunglasses"