add small script to create json files for use with lifomapserver
These json files can then be used to help with train routing through the networkmaster
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-- Small script to generate json files for lifomapserver to use for routing
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advtrains = {}
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minetest = {}
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core = minetest
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math.hypot = function(a,b) return math.sqrt(a*a + b*b) end
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function attrans(str) return str end
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dofile("vector.lua")
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dofile("serialize.lua")
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dofile("helpers.lua")
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function parse_args(argv)
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local i = 1
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local no_trains = false
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local datapath, mappath, worldimage
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while i <= #argv do
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local a = argv[i]
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if (a == "-m") or (a == "--map-file") then
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-- only draw trains – requires specifying an already drawn file
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i = i+1
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if not argv[i] then
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error(("missing filename after `%s'"):format(a))
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end
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mappath = argv[i]
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elseif (a == "-t") or (a == "--no-trains") then
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-- do not draw trains
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no_trains = true
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elseif (a == "-w") or (a == "--world-image") then
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-- overlay over world image
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i = i+1
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if not argv[i] then
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error(("missing filename after `%s'"):format(a))
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end
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worldimage = argv[i]
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else
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datapath = a
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end
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i = i + 1
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end
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return datapath, mappath, no_trains, worldimage
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end
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datapath, mappath, no_trains, worldimage = parse_args(arg)
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function ars_to_text(arstab)
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if not arstab then
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return "{}"
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end
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local txt = {}
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local ln = {}
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local rc = {}
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for i, arsent in ipairs(arstab) do
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local n = ""
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if arsent.n then
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n = "!"
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end
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if arsent.ln then
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ln[#ln+1] = '"'..n..arsent.ln..'"'
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elseif arsent.rc then
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rc[#ln+1] = '"'..n..arsent.rc..'"'
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elseif arsent.c then
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txt[#txt+1] = "#"..arsent.c
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end
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end
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return '{"LN": ['..table.concat(ln,',')..'], "RC" : ['..table.concat(rc,",")..']'.. ',"default": '..(arstab.default and "true" or "false").."}\n"
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end
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local file = io.open(datapath.."advtrains_interlocking_tcbs", "r")
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local tbl = minetest.deserialize(file:read("*a"))
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advtrains.tcbs = tbl
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file:close()
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local jsonfile = io.open(datapath.."signals.json", "w")
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tcbstr = {}
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for k,v in pairs(advtrains.tcbs) do
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local routes = v[1].routes or {}
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if v[2].routes then
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for a,b in ipairs(v[2].routes) do
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routes[#routes+1] = b
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end
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end
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local pos = k:sub(2,-2)
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local sp = {}
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for j in (pos..","):gmatch("([^,]+),") do
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sp[#sp+1] = j
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end
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local sigpos = sp[1]..","..-sp[3].." "
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local routestr = {}
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for i,r in pairs(routes) do
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local pl = sigpos
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local tcbps = {}
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-- svgfile:write("<circle cx=\""..sp[1].."\" cy=\""..-sp[3].."\" r=\"3\" stroke=\"".."purple".."\" stroke-width=\"1\" fill=\"none\" />")
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for ind,ps in ipairs(r) do
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if ps.next then
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local tcb = ps.next.p
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-- print(minetest.serialize(ps.next))
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if tcb and tcb.x then
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tcbps[#tcbps+1] = tcb.x..","..tcb.y..","..tcb.z
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pl = pl.." "..tcb.x..","..-tcb.z
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end
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end
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end
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if #tcbps > 0 then
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routestr[#routestr+1] = '{ "name": "'..r.name..'",\n"endpoint": "'..tcbps[#tcbps]..'",\n"ars": '..ars_to_text(r.ars)..' }'
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end
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color = "blue"
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if r.ars and r.ars.default then
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color = "green"
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end
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if pl~="" then
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-- svgfile:write("<polyline points=\""..pl.."\" fill=\"none\" stroke=\""..color.."\" />")
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end
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end
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if #routestr > 0 then
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tcbstr[#tcbstr+1] = '"'..pos..'": { "type" : "Feature", "geometry": { "type": "Point", "coordinates": [ '..sp[1]..","..sp[3]..']}, "properties" : { "pos": "'..pos..'", "routes" : [\n'..table.concat(routestr,",\n").."]}}"
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end
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end
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jsonfile:write("{"..table.concat(tcbstr,",\n").."}")
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jsonfile:close()
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