220 lines
6.4 KiB
Lua
220 lines
6.4 KiB
Lua
-- Begin of globals
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require("lib/access")
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barrier_whitelist = { ["cattle_grid"] = true, ["border_control"] = true, ["toll_booth"] = true, ["sally_port"] = true, ["gate"] = true, ["no"] = true}
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access_tag_whitelist = { ["yes"] = true, ["motorcar"] = true, ["motor_vehicle"] = true, ["vehicle"] = true, ["permissive"] = true, ["designated"] = true }
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access_tag_blacklist = { ["no"] = true, ["private"] = true, ["agricultural"] = true, ["forestry"] = true }
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access_tag_restricted = { ["destination"] = true, ["delivery"] = true }
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access_tags = { "motorcar", "motor_vehicle", "vehicle" }
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access_tags_hierachy = { "motorcar", "motor_vehicle", "vehicle", "access" }
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service_tag_restricted = { ["parking_aisle"] = true }
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ignore_in_grid = { ["ferry"] = true }
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restriction_exception_tags = { "motorcar", "motor_vehicle", "vehicle" }
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speed_profile = {
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["motorway"] = 90,
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["motorway_link"] = 75,
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["trunk"] = 85,
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["trunk_link"] = 70,
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["primary"] = 65,
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["primary_link"] = 60,
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["secondary"] = 55,
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["secondary_link"] = 50,
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["tertiary"] = 40,
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["tertiary_link"] = 30,
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["unclassified"] = 25,
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["residential"] = 25,
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["living_street"] = 10,
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["service"] = 15,
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-- ["track"] = 5,
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["ferry"] = 5,
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["shuttle_train"] = 10,
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["default"] = 50
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}
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take_minimum_of_speeds = false
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obey_oneway = true
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obey_bollards = true
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use_restrictions = true
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ignore_areas = true -- future feature
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traffic_signal_penalty = 2
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u_turn_penalty = 20
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-- End of globals
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function get_exceptions(vector)
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for i,v in ipairs(restriction_exception_tags) do
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vector:Add(v)
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end
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end
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local function parse_maxspeed(source)
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if source == nil then
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return 0
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end
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local n = tonumber(source:match("%d*"))
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if n == nil then
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n = 0
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end
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if string.match(source, "mph") or string.match(source, "mp/h") then
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n = (n*1609)/1000;
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end
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return math.abs(n)
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end
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function node_function (node)
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local barrier = node.tags:Find ("barrier")
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local access = Access.find_access_tag(node, access_tags_hierachy)
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local traffic_signal = node.tags:Find("highway")
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--flag node if it carries a traffic light
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if traffic_signal == "traffic_signals" then
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node.traffic_light = true;
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end
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-- parse access and barrier tags
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if access and access ~= "" then
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if access_tag_blacklist[access] then
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node.bollard = true
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end
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elseif barrier and barrier ~= "" then
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if barrier_whitelist[barrier] then
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return
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else
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node.bollard = true
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end
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end
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return 1
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end
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function way_function (way)
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-- First, get the properties of each way that we come across
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local highway = way.tags:Find("highway")
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local name = way.tags:Find("name")
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local ref = way.tags:Find("ref")
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local junction = way.tags:Find("junction")
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local route = way.tags:Find("route")
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local maxspeed = parse_maxspeed(way.tags:Find ( "maxspeed") )
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local maxspeed_forward = parse_maxspeed(way.tags:Find( "maxspeed:forward"))
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local maxspeed_backward = parse_maxspeed(way.tags:Find( "maxspeed:backward"))
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local barrier = way.tags:Find("barrier")
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local oneway = way.tags:Find("oneway")
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local cycleway = way.tags:Find("cycleway")
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local duration = way.tags:Find("duration")
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local service = way.tags:Find("service")
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local area = way.tags:Find("area")
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local access = Access.find_access_tag(way, access_tags_hierachy)
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-- Second, parse the way according to these properties
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if ignore_areas and ("yes" == area) then
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return 0
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end
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-- Check if we are allowed to access the way
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if access_tag_blacklist[access] then
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return 0
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end
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-- Set the name that will be used for instructions
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if "" ~= ref then
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way.name = ref
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elseif "" ~= name then
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way.name = name
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-- else
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-- way.name = highway -- if no name exists, use way type
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end
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if "roundabout" == junction then
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way.roundabout = true;
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end
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-- Handling ferries and piers
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if (speed_profile[route] ~= nil and speed_profile[route] > 0) then
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if durationIsValid(duration) then
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way.duration = math.max( parseDuration(duration), 1 );
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end
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way.direction = Way.bidirectional
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if speed_profile[route] ~= nil then
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highway = route;
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end
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if tonumber(way.duration) < 0 then
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way.speed = speed_profile[highway]
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end
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end
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-- Set the avg speed on the way if it is accessible by road class
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if (speed_profile[highway] ~= nil and way.speed == -1 ) then
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if maxspeed > speed_profile[highway] then
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way.speed = maxspeed
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else
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if 0 == maxspeed then
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maxspeed = math.huge
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end
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way.speed = math.min(speed_profile[highway], maxspeed)
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end
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end
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-- Set the avg speed on ways that are marked accessible
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if "" ~= highway and access_tag_whitelist[access] and way.speed == -1 then
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if 0 == maxspeed then
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maxspeed = math.huge
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end
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way.speed = math.min(speed_profile["default"], maxspeed)
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end
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-- Set access restriction flag if access is allowed under certain restrictions only
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if access ~= "" and access_tag_restricted[access] then
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way.is_access_restricted = true
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end
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-- Set access restriction flag if service is allowed under certain restrictions only
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if service ~= "" and service_tag_restricted[service] then
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way.is_access_restricted = true
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end
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-- Set direction according to tags on way
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if obey_oneway then
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if oneway == "no" or oneway == "0" or oneway == "false" then
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way.direction = Way.bidirectional
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elseif oneway == "-1" then
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way.direction = Way.opposite
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elseif oneway == "yes" or oneway == "1" or oneway == "true" or junction == "roundabout" or highway == "motorway_link" or highway == "motorway" then
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way.direction = Way.oneway
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else
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way.direction = Way.bidirectional
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end
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else
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way.direction = Way.bidirectional
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end
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-- Override speed settings if explicit forward/backward maxspeeds are given
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if maxspeed_forward ~= nil and maxspeed_forward > 0 then
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if Way.bidirectional == way.direction then
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way.backward_speed = way.speed
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end
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way.speed = maxspeed_forward
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end
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if maxspeed_backward ~= nil and maxspeed_backward > 0 then
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way.backward_speed = maxspeed_backward
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end
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-- Override general direction settings of there is a specific one for our mode of travel
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if ignore_in_grid[highway] ~= nil and ignore_in_grid[highway] then
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way.ignore_in_grid = true
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end
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way.type = 1
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return 1
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end
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-- These are wrappers to parse vectors of nodes and ways and thus to speed up any tracing JIT
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function node_vector_function(vector)
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for v in vector.nodes do
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node_function(v)
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end
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end
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