From 3ce98cae9aa588fba0be1e86fc81e7ca6040bd9d Mon Sep 17 00:00:00 2001
From: orwell96 <orwell@bleipb.de>
Date: Tue, 15 Jan 2019 17:23:03 +0100
Subject: Actual working ARS

---
 advtrains_interlocking/ars.lua | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'advtrains_interlocking/ars.lua')

diff --git a/advtrains_interlocking/ars.lua b/advtrains_interlocking/ars.lua
index db67a93..80ed638 100644
--- a/advtrains_interlocking/ars.lua
+++ b/advtrains_interlocking/ars.lua
@@ -20,3 +20,43 @@
 	{default=true} -> *
 	See also route_ui.lua
 ]]
+
+local il = advtrains.interlocking
+
+
+local function find_rtematch(routes, train)
+	local default
+	local line = train.line
+	local routingcode
+	for rteid, route in ipairs(routes) do
+		if route.ars then
+			if route.ars.default then
+				default = rteid
+			else
+				for arskey, arsent in ipairs(route.ars) do
+					if arsent.ln and line and arsent.ln == line then
+						return rteid
+					elseif arsent.rc and routingcode and string.match(" "..routingcode.." ", " "..arsent.rc.." ", nil, true) then
+						return rteid
+					end
+				end
+			end
+		end
+	end
+	return default
+end
+
+function advtrains.interlocking.ars_check(sigd, train)
+	local tcbs = il.db.get_tcbs(sigd)
+	if not tcbs or not tcbs.routes then return end
+	
+	if tcbs.routeset then
+		-- ARS is not in effect when a route is already set
+		return
+	end
+	
+	local rteid = find_rtematch(tcbs.routes, train)
+	if rteid then
+		il.route.update_route(sigd, tcbs, rteid, nil)
+	end
+end
-- 
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