From d9b420642a8020268fb5b61f3689418e47208587 Mon Sep 17 00:00:00 2001
From: PsiOmega <git@psiomega.se>
Date: Tue, 4 Nov 2014 17:25:01 +0100
Subject: [PATCH] Manifest ghost visibility-toggle

Ghosts which have been made visible by cultists can afterward turn themselves (in)visible at will, with a cooldown before being able to turn themselves visible after having faded from sight.
---
 code/game/gamemodes/cult/ritual.dm         |  3 +-
 code/modules/mob/dead/observer/observer.dm | 39 ++++++++++++++++++++++
 2 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/code/game/gamemodes/cult/ritual.dm b/code/game/gamemodes/cult/ritual.dm
index e60795f5fd9..30737a71cb5 100644
--- a/code/game/gamemodes/cult/ritual.dm
+++ b/code/game/gamemodes/cult/ritual.dm
@@ -346,7 +346,8 @@ var/engwords = list("travel", "blood", "join", "hell", "destroy", "technology",
 		msg_admin_attack("[user.name] ([user.ckey]) used [name] on [M.name] ([M.ckey]) (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[user.x];Y=[user.y];Z=[user.z]'>JMP</a>)")
 
 		if(istype(M,/mob/dead))
-			M.invisibility = 0
+			var/mob/dead/D = M
+			D.manifest()
 			user.visible_message( \
 				"\red [user] drags the ghost to our plan of reality!", \
 				"\red You drag the ghost to our plan of reality!" \
diff --git a/code/modules/mob/dead/observer/observer.dm b/code/modules/mob/dead/observer/observer.dm
index 5e6bd3cba1b..fd37fcae6b7 100644
--- a/code/modules/mob/dead/observer/observer.dm
+++ b/code/modules/mob/dead/observer/observer.dm
@@ -550,3 +550,42 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 		W.message = message
 		W.add_hiddenprint(src)
 		W.visible_message("\red Invisible fingers crudely paint something in blood on [T]...")
+
+/mob/dead/proc/manifest()
+	verbs += /mob/dead/proc/toggle_visibility
+	toggle_visibility()
+
+/mob/dead/proc/toggle_icon(var/icon)
+	if(!client)
+		return
+
+	var/iconRemoved = 0
+	for(var/image/I in client.images)
+		if(I.icon_state == icon)
+			iconRemoved = 1
+			del(I)
+
+	if(!iconRemoved)
+		var/image/J = image('icons/mob/mob.dmi', loc = src, icon_state = icon)
+		client.images += J
+
+/mob/dead/proc/toggle_visibility()
+	set category = "Ghost"
+	set name = "Toggle Visibility"
+	set desc = "Allows you to turn (in)visible (almost) at will."
+
+	var/toggled_invisible
+
+	if(invisibility && world.time < toggled_invisible + 600)
+		src << "You must gather strength before you can turn visible again..."
+		return
+
+	if(invisibility == 0)
+		toggled_invisible = world.time
+		visible_message("<span class='emote'>It fades from sight...</span>", "<span class='info'>You are now invisible</span>")
+	else
+		src << "<span class='info>You are now visible</span>"
+
+	invisibility = invisibility == INVISIBILITY_OBSERVER ? 0 : INVISIBILITY_OBSERVER
+	// Give the ghost a cult icon which should be visible only to itself
+	toggle_icon("cult")