3 files changed, 73 insertions, 2 deletions
diff --git a/auto_yards/init_code.lua b/auto_yards/init_code.lua
index cdeacce..6e4551f 100644
--- a/auto_yards/init_code.lua
+++ b/auto_yards/init_code.lua
@@ -8,7 +8,10 @@ if event.init then
 			active_indicator_pos = POS(),
 			dir_indicator_pos = POS(),
 			error_indicator_pos = POS(),
+			ext_notify_pos = POS(),
+			notify = table,
 			headshunt_max = number,
+			
 		},
 		]]--
 		TY = {
@@ -21,6 +24,8 @@ if event.init then
 			active_indicator_pos = POS(-2002,3,-1099),
 			dir_indicator_pos = POS(-2009,3,-1101),
 			error_indicator_pos = POS(-1999,3,-1099),
+			ext_notify_pos = POS(-2004,2,-1101),
+			notify = {},
 			headshunt_max = 5,
 		},
 		IP = {
@@ -40,7 +45,11 @@ end
 -- Utility Functions
 F.indicator = function(indicator,set)
 	if set ~= nil then
-		setstate(indicator,(set and "on") or "off")
+		if type(set) == string then
+			setstate(indicator,set)
+		else
+			setstate(indicator,(set and "on") or "off")
+		end
 	end
 	return (getstate(indicator) == "on") or false
 end
@@ -156,7 +165,6 @@ F.yard_arrival = function(yard_id,this_dir) -- arrow points towards yard
 			F.add_rc({yard_id.."_HAS_RTS"})
 			rts = true
 		end
-		step_fc()
 		atc_set_ars_disable(false)
 		atc_send("S6")
 		print("Train "..atc_id.." enters yard ".. yard_id.." from the "..tostring(this_dir).." direction and "..((rts and "will") or "won't").." return in the same direction")
@@ -352,6 +360,7 @@ F.headshunt_exit = function(yard_id,this_dir) -- arrow points out of yard
 					F.remove_rc(yard_id.."_HAS_RTS")
 					F.add_rc({yard_id.."_RTS"})
 				end
+				step_fc()
 				atc_set_ars_disable(false)
 				atc_send("S6D10SM")
 				schedule_in(";05","deactivate_check") -- wait a little to ensure train is clear from headshunt to deactivate yard
@@ -368,6 +377,7 @@ F.headshunt_exit = function(yard_id,this_dir) -- arrow points out of yard
 		if event.msg == "deactivate_check" then
 			if not atc_id then
 				F.indicator(yard.active_indicator_pos,false)
+				if yard.ext_notify_pos then interrupt_pos(yard.ext_notify_pos,{command="EXIT"}) end
 				print(yard_id.." yard Disabled")
 			else
 				schedule_in(";05","deactivate_check")
@@ -401,6 +411,17 @@ F.lane_EOL = function(yard_id,this_dir) -- arrow points towards headshunt
 	else
 		if F.indicator(yard.dir_indicator_pos) == this_dir then
 			--train is clasifying wagons, let it pass and couple to the rest of the rake
+			--send a notification to the yard controller to trigger external functions
+			if yard.ext_notify_pos then
+				local fc = F.get_rc_safe():match(yard_id.."_CLASS_(%S+)") or nil
+				if fc then
+					if F.has_rc(yard_id.."_COLLECT_"..fc) then
+						interrupt_pos(yard.ext_notify_pos,{command="COLLECTED",msg=fc})
+					else
+						interrupt_pos(yard.ext_notify_pos,{command="NOTIFY",msg=fc})
+					end
+				end
+			end
 			F.remove_rc_match(yard_id.."_CLASS_%S+")
 		else --this should never come into play as it means the train has entered from the wrong end somehow
 			atc_send("BBOL") --stop the train and open the doors (if available) to signify assistance required
diff --git a/auto_yards/nodes/(-2004,2,-1101).lua b/auto_yards/nodes/(-2004,2,-1101).lua
new file mode 100644
index 0000000..c39016a
--- /dev/null
+++ b/auto_yards/nodes/(-2004,2,-1101).lua
@@ -0,0 +1,23 @@
+local yard_id = "BY"
+local subs = {
+	['S27'] = POS(-1512,8,-2613)
+}
+if event.ext_int then
+	print(event)
+	local m = event.message
+	if m.command == "NOTIFY" then -- store the notifications in the yards's S table entry for mass-dispatch
+		if m.msg == "*" then return end -- no need to notify for the LHF train's collect moves
+		S.yards[yard_id].notify[m.msg] = true
+		return
+	end
+	if m.command == "COLLECTED" then
+		S.yards[yard_id].notify[m.msg] = nil
+		return
+	end
+	if m.command == "EXIT" then
+		for k in pairs(S.yards[yard_id].notify) do
+			if subs[k] then interrupt_pos(subs[k],{command="NOTIFY",msg=k}) end
+		end
+		return
+	end
+end
+\ No newline at end of file
diff --git a/auto_yards/nodes/(416,17,5).lua b/auto_yards/nodes/(416,17,5).lua
new file mode 100644
index 0000000..e8c1b0e
--- /dev/null
+++ b/auto_yards/nodes/(416,17,5).lua
@@ -0,0 +1,27 @@
+local stack = function(t,channel,num_screens)
+	for i=0,math.ceil(#t/4) do
+		local calc = i*4
+		local working_t = {t[calc+1],t[calc+2],t[calc+3],t[calc+4]}
+		local message = table.concat(working_t,"\n")
+		if i+1 > num_screens then return end
+		digiline_send(channel..i+1,message)
+	end
+end
+
+if event.channel=="clock" or event.punch then
+	local txt = {"-- AUTOMATIC YARD STATUS --","Railway Time: "..rwt.to_string(rwt.now(),true),"LHF Trains: 719814"," ========================"}
+	local s
+	for yard_id,info in pairs(S.yards) do
+		table.insert(txt, yard_id.." - Active:    " .. tostring(F.indicator(info.active_indicator_pos)))
+		table.insert(txt,"     Direction: " .. tostring(F.indicator(info.dir_indicator_pos)))
+		table.insert(txt,"     Error:     ".. tostring(F.indicator(info.error_indicator_pos)))
+		if info.notify and info.notify[1] then
+			table.insert(txt,"Notify: "..table.concat(info.notify,", "))
+		else
+			table.insert(txt,"Notify: N/A")
+		end
+	end
+	
+	stack(txt,"yard_status",4)
+	return
+end
+\ No newline at end of file