Allows you to put hats on wigs (for cosmetics) (#425)

maplestation.dme

@@ -6278,6 +6278,7 @@
 #include "maplestation_modules\code\modules\clothing\head\jobs.dm"
 #include "maplestation_modules\code\modules\clothing\head\loadout_helmet.dm"
 #include "maplestation_modules\code\modules\clothing\head\misc.dm"
+#include "maplestation_modules\code\modules\clothing\head\wig.dm"
 #include "maplestation_modules\code\modules\clothing\masks\ornithid_masks.dm"
 #include "maplestation_modules\code\modules\clothing\neck\coconut_bra.dm"
 #include "maplestation_modules\code\modules\clothing\shoes\digi_shoes.dm"

maplestation_modules/code/datums/components/stackable_item.dm

@@ -75,7 +75,12 @@
 		return
 
 	// Add in our new worn icon as an overlay of our item's icon.
-	overlays += stacked_on.build_worn_icon(standing.layer)
+	var/mutable_appearance/created = stacked_on.build_worn_icon(standing.layer)
+	if(isnull(created))
+		return
+
+	created.appearance_flags |= RESET_COLOR
+	overlays += created
 
 /datum/component/stackable_item/proc/atom_exited(obj/item/source, atom/movable/gone, direction)
 	SIGNAL_HANDLER

maplestation_modules/code/modules/clothing/head/wig.dm

@@ -0,0 +1,13 @@
+/obj/item/clothing/head/wig/Initialize(mapload)
+	. = ..()
+	AddComponent(/datum/component/stackable_item, \
+		wearables = list(/obj/item/clothing/head), \
+		wearable_descriptor = "a hat", \
+		can_stack = CALLBACK(src, PROC_REF(can_attach_hat)), \
+	)
+
+/obj/item/clothing/head/wig/proc/can_attach_hat(obj/item/source, obj/item/clothing/head/incoming_head, mob/user)
+	if(incoming_head.clothing_flags & STACKABLE_HELMET_EXEMPT)
+		balloon_alert(user, "invalid hat!")
+		return FALSE
+	return TRUE