[MIRROR] Visible ghosts emit light (#877)

* Visible ghosts emit light

* Update ghost.dm

* Delete ghost.dm.rej

code/modules/mob/dead/observer/observer.dm

@@ -54,7 +54,7 @@ GLOBAL_VAR_INIT(observer_default_invisibility, INVISIBILITY_OBSERVER)
 	var/deadchat_name
 
 /mob/dead/observer/Initialize()
-	invisibility = GLOB.observer_default_invisibility
+	set_invisibility(GLOB.observer_default_invisibility)
 
 	verbs += /mob/dead/observer/proc/dead_tele
 
@@ -788,13 +788,25 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 	if(!invisibility)
 		to_chat(user, "It seems extremely obvious.")
 
+/mob/dead/observer/proc/set_invisibility(value)
+	invisibility = value
+	if(!value)
+		set_light(1, 2)
+	else
+		set_light(0, 0)
+
 // Ghosts have no momentum, being massless ectoplasm
 /mob/dead/observer/Process_Spacemove(movement_dir)
 	return 1
 
+/mob/dead/observer/vv_edit_var(var_name, var_value)
+	. = ..()
+	if(var_name == "invisibility")
+		set_invisibility(invisibility) // updates light
+
 /proc/set_observer_default_invisibility(amount, message=null)
 	for(var/mob/dead/observer/G in GLOB.player_list)
-		G.invisibility = amount
+		G.set_invisibility(amount)
 		if(message)
 			to_chat(G, message)
 	GLOB.observer_default_invisibility = amount

code/modules/mob/living/simple_animal/hostile/retaliate/ghost.dm

@@ -42,6 +42,7 @@
 	. = ..()
 	if(!random)
 		give_hair()
+	set_light(1, 2)
 	else
 		switch(rand(0,1))
 			if(0)
@@ -60,4 +61,4 @@
 		ghost_facial_hair = mutable_appearance('icons/mob/human_face.dmi', "facial_[ghost_facial_hair_style]", -HAIR_LAYER)
 		ghost_facial_hair.alpha = 200
 		ghost_facial_hair.color = ghost_facial_hair_color
-		add_overlay(ghost_facial_hair)
+		add_overlay(ghost_facial_hair)