114 lines
2.8 KiB
Lua
114 lines
2.8 KiB
Lua
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-- Interlocking counterpart of LZB, which has been moved into the core...
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-- Registers LZB callback for signal management.
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--[[
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usage of lzbdata:
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{
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travsht = boolean indicating whether the train will be a shunt move at "trav"
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travspd = speed restriction at end of traverser
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travwspd = warning speed res.t
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}
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]]
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local SHUNT_SPEED_MAX = advtrains.SHUNT_SPEED_MAX
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local il = advtrains.interlocking
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local function get_over_function(speed, shunt)
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return function(pos, id, train, index, speed, lzbdata)
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if speed == 0 and minetest.settings:get_bool("at_il_force_lzb_halt") then
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atwarn(id,"overrun LZB 0 restriction (red signal) ",ent.pos)
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-- Set train 1 index backward. Hope this does not lead to bugs...
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train.index = index - 0.5
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train.velocity = 0
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train.ctrl.lzb = 0
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minetest.after(0, advtrains.invalidate_path, id)
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else
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train.speed_restriction = speed
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train.is_shunt = shunt
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end
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end
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end
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advtrains.tnc_register_on_approach(function(pos, id, train, index, lzbdata)
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--atdebug(id,"IL ApprC",pos,index,lzbdata)
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--train.debug = advtrains.print_concat_table({train.is_shunt,"|",index,"|",lzbdata})
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local pts = advtrains.roundfloorpts(pos)
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local cn = train.path_cn[index]
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local travsht = lzbdata.travsht
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if travsht==nil then
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travsht = train.is_shunt
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end
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local travspd = lzbdata.travspd
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local travwspd = lzbdata.travwspd
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-- check for signal
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local asp, spos = il.db.get_ip_signal_asp(pts, cn)
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-- do ARS if needed
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if spos then
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--atdebug(id,"IL Spos (ARS)",spos,asp)
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local sigd = il.db.get_sigd_for_signal(spos)
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if sigd then
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il.ars_check(sigd, train)
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end
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end
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--atdebug("trav: ",pos, cn, asp, spos, "travsht=", lzb.travsht)
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local lspd
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if asp then
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--atdebug(id,"IL Signal",spos,asp)
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local nspd = 0
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--interpreting aspect and determining speed to proceed
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if travsht then
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--shunt move
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if asp.shunt.free then
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nspd = SHUNT_SPEED_MAX
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elseif asp.shunt.proceed_as_main and asp.main.free then
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nspd = asp.main.speed
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travsht = false
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end
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else
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--train move
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if asp.main.free then
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nspd = asp.main.speed
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elseif asp.shunt.free then
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nspd = SHUNT_SPEED_MAX
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travsht = true
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end
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end
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-- nspd can now be: 1. !=0: new speed restriction, 2. =0: stop here or 3. nil: keep travspd
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if nspd then
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if nspd == -1 then
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travspd = nil
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else
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travspd = nspd
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end
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end
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local nwspd = asp.info.w_speed
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if nwspd then
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if nwspd == -1 then
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travwspd = nil
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else
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travwspd = nwspd
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end
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end
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--atdebug("ns,wns,ts,wts", nspd, nwspd, travspd, travwspd)
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lspd = travspd
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if travwspd and (not lspd or lspd>travwspd) then
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lspd = travwspd
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end
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local udata = {signal_pos = spos}
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local callback = get_over_function(lspd, travsht)
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advtrains.lzb_add_checkpoint(train, index, lspd, callback)
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end
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lzbdata.travsht = travsht
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lzbdata.travspd = travspd
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lzbdata.travwspd = travwspd
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end)
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