127 lines
3.6 KiB
Lua
127 lines
3.6 KiB
Lua
-- Interlocking counterpart of LZB, which has been moved into the core...
|
|
-- Registers LZB callback for signal management.
|
|
|
|
--[[
|
|
usage of lzbdata:
|
|
{
|
|
travsht = boolean indicating whether the train will be a shunt move at "trav"
|
|
travspd = speed restriction at end of traverser
|
|
travwspd = warning speed res.t
|
|
}
|
|
]]
|
|
|
|
local SHUNT_SPEED_MAX = advtrains.SHUNT_SPEED_MAX
|
|
|
|
local il = advtrains.interlocking
|
|
|
|
local function get_over_function(speed, shunt)
|
|
return function(pos, id, train, index, speed, lzbdata)
|
|
if speed == 0 and minetest.settings:get_bool("at_il_force_lzb_halt") then
|
|
atwarn(id,"overrun LZB 0 restriction (red signal) ",pos)
|
|
-- Set train 1 index backward. Hope this does not lead to bugs...
|
|
--train.index = index - 0.5
|
|
train.speed_restriction = 0
|
|
|
|
--TODO temporary
|
|
--advtrains.drb_dump(id)
|
|
--error("Debug: "..id.." triggered LZB-0")
|
|
else
|
|
train.speed_restriction = speed
|
|
train.is_shunt = shunt
|
|
end
|
|
--atdebug("train drove over IP: speed=",speed,"shunt=",shunt)
|
|
end
|
|
end
|
|
|
|
advtrains.tnc_register_on_approach(function(pos, id, train, index, has_entered, lzbdata)
|
|
|
|
--atdebug(id,"IL ApprC",pos,index,lzbdata)
|
|
--train.debug = advtrains.print_concat_table({train.is_shunt,"|",index,"|",lzbdata})
|
|
|
|
local pts = advtrains.roundfloorpts(pos)
|
|
local cn = train.path_cn[index]
|
|
local travsht = lzbdata.il_shunt
|
|
|
|
local travspd = lzbdata.il_speed
|
|
|
|
if travsht==nil then
|
|
-- lzbdata has reset
|
|
travspd = train.speed_restriction
|
|
travsht = train.is_shunt or false
|
|
end
|
|
|
|
|
|
|
|
-- check for signal
|
|
local asp, spos = il.db.get_ip_signal_asp(pts, cn)
|
|
|
|
-- do ARS if needed
|
|
local ars_enabled = not train.ars_disable
|
|
-- Note on ars_disable:
|
|
-- Theoretically, the ars_disable flag would need to behave like the speed restriction field: it should be
|
|
-- stored in lzbdata and updated once the train drives over. However, for the sake of simplicity, it is simply
|
|
-- a value in the train. In this case, this is sufficient because once a train triggers ARS for the first time,
|
|
-- resetting the path does not matter to the set route and ARS doesn't need to be called again.
|
|
if spos and ars_enabled then
|
|
--atdebug(id,"IL Spos (ARS)",spos,asp)
|
|
local sigd = il.db.get_sigd_for_signal(spos)
|
|
if sigd then
|
|
il.ars_check(sigd, train)
|
|
end
|
|
end
|
|
--atdebug("trav: ",pos, cn, asp, spos, "travsht=", lzb.travsht)
|
|
local lspd
|
|
if asp then
|
|
--atdebug(id,"IL Signal",spos, asp, lzbdata, "trainstate", train.speed_restriction, train.is_shunt)
|
|
local nspd = 0
|
|
--interpreting aspect and determining speed to proceed
|
|
if travsht then
|
|
--shunt move
|
|
if asp.shunt then
|
|
nspd = SHUNT_SPEED_MAX
|
|
elseif asp.proceed_as_main and asp.main ~= 0 then
|
|
nspd = asp.main
|
|
travsht = false
|
|
end
|
|
else
|
|
--train move
|
|
if asp.main ~= 0 then
|
|
nspd = asp.main
|
|
elseif asp.shunt then
|
|
nspd = SHUNT_SPEED_MAX
|
|
travsht = true
|
|
end
|
|
end
|
|
-- nspd can now be: 1. !=0: new speed restriction, 2. =0: stop here or 3. nil: keep travspd
|
|
if nspd then
|
|
if nspd == -1 then
|
|
travspd = nil
|
|
else
|
|
travspd = nspd
|
|
end
|
|
end
|
|
|
|
--atdebug("ns,ts", nspd, travspd)
|
|
|
|
lspd = travspd
|
|
|
|
local udata = {signal_pos = spos}
|
|
local callback = get_over_function(lspd, travsht)
|
|
lzbdata.il_shunt = travsht
|
|
lzbdata.il_speed = travspd
|
|
--atdebug("new lzbdata",lzbdata)
|
|
advtrains.lzb_add_checkpoint(train, index, lspd, callback, lzbdata, udata)
|
|
end
|
|
end)
|
|
|
|
-- Set the ars_disable flag to the value passed
|
|
-- Triggers a path invalidation if set to false
|
|
function advtrains.interlocking.ars_set_disable(train, value)
|
|
if value then
|
|
train.ars_disable = true
|
|
else
|
|
train.ars_disable = nil
|
|
minetest.after(0, advtrains.path_invalidate, train)
|
|
end
|
|
end
|