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-- Classification track
local this_dir = false
-- this_dir == true for north end, false for south end
if F.yard_active() then
if atc_arrow then -- loco is at working end
F.remove_rc({"TY_PICKUP"})
if F.has_rc("TY_ARRIVE") and F.dir() == this_dir then --first pass, prep train for working
F.remove_rc({"TY_AROUND"})
if not F.get_rc_safe():match("TY_LOCOS_%d+") or not F.get_rc_safe():match("TY_WAGONS_%d+") then
local full_length = train_length()
split_off_locomotive("A0B0")
F.add_rc({"TY_HEADSHUNT"}) -- train will end up going through headshunt no matter what. there shouldn't be any trains entering that pass straight through.
if train_length() == full_length then --train is either only here for collection or there's no FC's in the wagons. can't differentiate
local lane = F.get_rc_safe():match("TY_COLLECT_(%S+)") or ""
F.add_rc({"TY_LAST_CLASS","TY_CLASS_"..lane}) -- direct train to correct lane for collection
else --identify and save loco:wagon ratio, then bounce back from headshunt. it's easier than trying to reconnect
F.add_rc({"TY_LOCOS_"..train_length(), "TY_WAGONS_"..(full_length-train_length()),"TY_PICKUP"})
end
return -- train has departed for headshunt
end
if F.has_rc("TY_RTS") then
F.dir(not F.dir())
F.remove_rc({"TY_RTS"})
F.add_rc({"TY_AROUND"}) -- send loco around to the other end
split_off_locomotive("A0B0")
atc_set_ars_disable(false)
return -- train has departed for RTS loop
end
F.remove_rc({"TY_ARRIVE"})
step_fc()
end
if this_dir == F.dir() then --train has bounced and is ready to classify wagon(s)
-- local pre_split = train_length()
local lane = split_at_fc("A0B0",5) -- where to classify this rake -- headshunt length
local locos = tonumber(F.get_rc_safe():match("TY_LOCOS_(%d+)")) or 1 --saved loco count
local wagons = tonumber(F.get_rc_safe():match("TY_WAGONS_(%d+)")) or 0 -- wagon_count from last classification split
local this_rake = train_length() - locos-- subtract these wagons from the overall wagon count
if this_rake == wagons then -- mark for last_classification
F.add_rc({"TY_LAST_CLASS"})
end
if lane ~= "" then
F.add_rc({"TY_CLASS_"..lane})
end
for v in F.get_rc_safe():gmatch("(TY_WAGONS_%d+)") do
F.remove_rc({v})
end
F.add_rc({"TY_HEADSHUNT","TY_WAGONS_"..wagons-this_rake})
atc_set_ars_disable(false)
set_autocouple()
else --bounce train back towards working end
atc_set_ars_disable(true)
atc_send("S0WRD1S3")
unset_autocouple()
end
else -- train entering from the far end. set autocouple so it pushes all the way through to the bounce
set_autocouple()
end
end
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