oops updates asset cache

code/controllers/configuration/entries/resources.dm

@@ -0,0 +1,30 @@
+/datum/config_entry/keyed_list/external_rsc_urls
+	key_mode = KEY_MODE_TEXT
+	value_mode = VALUE_MODE_FLAG
+
+/datum/config_entry/flag/asset_simple_preload
+
+/datum/config_entry/string/asset_transport
+/datum/config_entry/string/asset_transport/ValidateAndSet(str_val)
+	return (lowertext(str_val) in list("simple", "webroot")) && ..(lowertext(str_val))
+
+/datum/config_entry/string/asset_cdn_webroot
+	protection = CONFIG_ENTRY_LOCKED
+
+/datum/config_entry/string/asset_cdn_webroot/ValidateAndSet(str_var)
+	if (!str_var || trim(str_var) == "")
+		return FALSE
+	if (str_var && str_var[length(str_var)] != "/")
+		str_var += "/"
+	return ..(str_var)
+
+/datum/config_entry/string/asset_cdn_url
+	protection = CONFIG_ENTRY_LOCKED
+	default = null
+
+/datum/config_entry/string/asset_cdn_url/ValidateAndSet(str_var)
+	if (!str_var || trim(str_var) == "")
+		return FALSE
+	if (str_var && str_var[length(str_var)] != "/")
+		str_var += "/"
+	return ..(str_var)

code/controllers/subsystem/assets.dm

@@ -4,6 +4,23 @@ SUBSYSTEM_DEF(assets)
 	flags = SS_NO_FIRE
 	var/list/cache = list()
 	var/list/preload = list()
+	var/datum/asset_transport/transport = new()
+
+/datum/controller/subsystem/assets/OnConfigLoad()
+	var/newtransporttype = /datum/asset_transport
+	switch (CONFIG_GET(string/asset_transport))
+		if ("webroot")
+			newtransporttype = /datum/asset_transport/webroot
+	
+	if (newtransporttype == transport.type)
+		return
+
+	var/datum/asset_transport/newtransport = new newtransporttype ()
+	if (newtransport.validate_config())
+		transport = newtransport
+	transport.Load()
+
+
 
 /datum/controller/subsystem/assets/Initialize(timeofday)
 	for(var/type in typesof(/datum/asset))
@@ -11,8 +28,6 @@ SUBSYSTEM_DEF(assets)
 		if (type != initial(A._abstract))
 			get_asset_datum(type)
 
-	preload = cache.Copy() //don't preload assets generated during the round
+	transport.Initialize(cache)
 
-	for(var/client/C in GLOB.clients)
-		addtimer(CALLBACK(GLOBAL_PROC, .proc/getFilesSlow, C, preload, FALSE), 10)
 	..()