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path: root/auto_yards/nodes/(-4148,13,-5844).lua
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-- Automatic bouncer for headshunts, assuming longer headshunt than train length. Arrow points into headshunt
local rev_rc = "DLG_HS_S"
local rm_rc = true
local autocouple = "DLG_HS_S_AC"
local rm_cpl_rc = true


__approach_callback_mode = 1

if event.approach and not event.has_entered then
	atc_set_lzb_tsr(3)
	atc_set_ars_disable(true)
	return
end

if event.train then
	if not atc_arrow then --train has bounced
		if F.has_rc(autocouple) then
			atc_send("CplS0WD2S1")
			if rm_cpl_rc then F.remove_rc({autocouple}) end
		end
		return
	end
	
	if not F.has_rc(rev_rc) then --not our train. disregard
		atc_set_ars_disable(false)
		return
	end
	if rm_rc then F.remove_rc({rev_rc}) end
	schedule_in(";01",atc_id)
	return
end

if event.schedule then
	if not atc_id then --bounce the train that just passed
		atc_send_to_train(event.msg,"B0WRD1A1S3")
	else
		if atc_id == event.msg then --train hasn't fully passed yet, wait a bit longer
			schedule_in(";01",atc_id)
		else -- somehow another train crossed the controller before the first one returned. Unlikely but possible
			atc_send_to_train(event.msg,"BBOL")
			atc_send("BBOL")
		end
	end
end