Persistent Trash/Dirt/Graffiti/Notices

code/controllers/configuration.dm

@@ -236,6 +236,8 @@ var/list/gamemode_cache = list()
 	var/static/dooc_allowed = 1
 	var/static/dsay_allowed = 1
 
+	var/persistence_enabled = 1
+
 	var/allow_byond_links = 0
 	var/allow_discord_links = 0
 	var/allow_url_links = 0					// honestly if I were you i'd leave this one off, only use in dire situations
@@ -434,15 +436,15 @@ var/list/gamemode_cache = list()
 
 				if ("allow_admin_spawning")
 					config.allow_admin_spawning = 1
-					
+
 				if ("allow_byond_links")
 					allow_byond_links = 1
 
 				if ("allow_discord_links")
-					allow_discord_links = 1	
+					allow_discord_links = 1
 
 				if ("allow_url_links")
-					allow_url_links = 1					
+					allow_url_links = 1
 
 				if ("no_dead_vote")
 					config.vote_no_dead = 1
@@ -577,6 +579,9 @@ var/list/gamemode_cache = list()
 				if("protect_roles_from_antagonist")
 					config.protect_roles_from_antagonist = 1
 
+				if ("persistence_enabled")
+					config.persistence_enabled = 1
+
 				if ("probability")
 					var/prob_pos = findtext(value, " ")
 					var/prob_name = null

code/controllers/subsystems/persistence.dm

@@ -0,0 +1,59 @@
+SUBSYSTEM_DEF(persistence)
+	name = "Persistence"
+	init_order = INIT_ORDER_PERSISTENCE
+	flags = SS_NO_FIRE
+	var/list/tracking_values = list()
+	var/list/persistence_datums = list()
+
+/datum/controller/subsystem/persistence/Initialize()
+	. = ..()
+	for(var/thing in subtypesof(/datum/persistent))
+		var/datum/persistent/P = new thing
+		persistence_datums[thing] = P
+		P.Initialize()
+
+/datum/controller/subsystem/persistence/Shutdown()
+	for(var/thing in persistence_datums)
+		var/datum/persistent/P = persistence_datums[thing]
+		P.Shutdown()
+
+/datum/controller/subsystem/persistence/proc/track_value(var/atom/value, var/track_type)
+
+	if(config.persistence_enabled == 0) //if the config is not set to persistent nothing will save or load.
+		return
+
+	var/turf/T = get_turf(value)
+	if(!T)
+		return
+
+	var/area/A = get_area(T)
+	if(!A || (A.flags & AREA_FLAG_IS_NOT_PERSISTENT))
+		return
+
+//	if((!T.z in GLOB.using_map.station_levels) || !initialized)
+	if(!T.z in using_map.station_levels)
+		return
+
+	if(!tracking_values[track_type])
+		tracking_values[track_type] = list()
+	tracking_values[track_type] += value
+
+/datum/controller/subsystem/persistence/proc/forget_value(var/atom/value, var/track_type)
+	if(tracking_values[track_type])
+		tracking_values[track_type] -= value
+
+
+/datum/controller/subsystem/persistence/proc/show_info(var/mob/user)
+	if(!user.client.holder)
+		return
+
+	var/list/dat = list("<table width = '100%'>")
+	var/can_modify = check_rights(R_ADMIN, 0, user)
+	for(var/thing in persistence_datums)
+		var/datum/persistent/P = persistence_datums[thing]
+		if(P.has_admin_data)
+			dat += P.GetAdminSummary(user, can_modify)
+	dat += "</table>"
+	var/datum/browser/popup = new(user, "admin_persistence", "Persistence Data")
+	popup.set_content(jointext(dat, null))
+	popup.open()