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control.lua
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local teleport = require("teleport")
require("mod-gui")
require("quadTree")
local insert = table.insert
local remove = table.remove
local sqrt = math.sqrt
local abs = math.abs
local pow = math.pow
local find = string.find
local gsub = string.gsub
local next = next
--[[
wish: somehow allow to transfer power. current fallback would be another mod
todo: place an arrow sprite on top of the tunnel indicating if it goes up or down?
todo: find a way to recover broken superTrains
todo: fix transition between manual_mode and auto. move driver to previous controlLoco on auto->manual
todo: fix/replace the quadtree implementation ... or maybe replace it with collisions
todo: mod configuration. resources on underground, diggy, max underground level
todo: editing trains that are partially in tunnels causes problems
TODO: allow setting max depth in mod settings. in case of implementation of blueprints those will be limited to one underground level
--]]
global.superTrains = {}
global.trainTunnels = {}
global.trainTunnelsRailLookup = {} -- [surface] => quadtree:rail.pos => traintunnelId
global.trainTunnelsStopLookup = {} -- stopId => traintunnelId
global.trainUIs = {}
local ftCache = {}
local function ft(anchor, text, row)
row = row or 0
local cacheKey = anchor.unit_number .. ':' .. row
if ftCache[cacheKey] then
if ftCache[cacheKey] then
rendering.set_text(ftCache[cacheKey], text)
end
else
ftCache[cacheKey] = rendering.draw_text{target=anchor, text=text, surface=anchor.surface, color={r = 1, g = 0, b = 0, a = 0.5}, target_offset={0,-1 * row}}
end
end
local function entity_distance(a, b)
if a.position.x == b.position.x then
return abs(a.position.y - b.position.y)
elseif a.position.y == b.position.y then
return abs(a.position.x - b.position.x)
end
return sqrt(pow(abs(a.position.x - b.position.x), 2) + pow(abs(a.position.y - b.position.y),2))
end
local function train_frontfartheraway(carriage, to_stop)
if #carriage.train.carriages == 1 then
return abs(carriage.orientation - to_stop.orientation) > 0.25
else
return entity_distance(carriage.train.front_stock, to_stop) > entity_distance(carriage.train.back_stock, to_stop)
end
end
local function tryToDisolveSupertrain(superTrainIndex)
local superTrain = global.superTrains[superTrainIndex]
if superTrain == nil then
return true
end
local hasPlayer = (superTrain.player_index and superTrain.player_index > 0 and game.players[superTrain.player_index].driving)
local isInPieces = table_size(superTrain.trains) > 1
local hasMomentum = (superTrain.speed ~= 0)
if isInPieces then
return false
elseif not superTrain.auto then
if hasPlayer or hasMomentum then
return false
else
global.superTrains[superTrainIndex] = nil
end
else
-- no known case if this
global.superTrains[superTrainIndex] = nil
end
return true
end
local function tunnelPrefix(name)
local prefix = '<T>'
return prefix .. string.gsub(name, '^<T>', "")
end
local function updateTunnelName(entity)
-- make sure the tunnel is prefixed with <T>
entity.backer_name = tunnelPrefix(entity.backer_name)
-- and that both ends have the same name
local tunnel = global.trainTunnelsStopLookup[entity.unit_number]
if tunnel then
global.trainTunnels[tunnel].from_stop.backer_name = entity.backer_name
global.trainTunnels[tunnel].to_stop.backer_name = entity.backer_name
end
end
local function addTunnel(tunnel)
local rail_position
local uniqueId = tunnel.from_stop.unit_number .. ':' .. tunnel.to_stop.unit_number
tunnel.to_stop.backer_name = tunnelPrefix(tunnel.from_stop.backer_name)
tunnel.from_stop.backer_name = tunnelPrefix(tunnel.from_stop.backer_name)
-- store the tunnel itself
global.trainTunnels[uniqueId] = tunnel
-- store lookup for upper entrance
if global.trainTunnelsRailLookup[tunnel.from_surface] == nil then
global.trainTunnelsRailLookup[tunnel.from_surface] = QuadTree:new()
end
rail_position = tunnel.from_rail.position
global.trainTunnelsRailLookup[tunnel.from_surface]:addObject({
x = rail_position.x,
y = rail_position.y,
width = 1,
height = 1,
tunnel = uniqueId
})
-- store lookup for lower entrance
if global.trainTunnelsRailLookup[tunnel.to_surface] == nil then
global.trainTunnelsRailLookup[tunnel.to_surface] = QuadTree:new()
end
rail_position = tunnel.to_rail.position
global.trainTunnelsRailLookup[tunnel.to_surface]:addObject({
x = rail_position.x,
y = rail_position.y,
width = 1,
height = 1,
tunnel = uniqueId
})
-- store stop lookups for auto-trains
global.trainTunnelsStopLookup[tunnel.from_stop.unit_number] = uniqueId
global.trainTunnelsStopLookup[tunnel.to_stop.unit_number] = uniqueId
return uniqueId
end
local currentFakeTunnel = {}
local function fakeEntrance(entity)
local tunnel = {
from_surface = entity.surface.name,
from_stop = entity,
from_rail = entity.connected_rail,
to_surface = 0,
to_stop = 0,
to_rail = 0,
}
currentFakeTunnel = tunnel
end
local function fakeExit(entity)
currentFakeTunnel.to_surface = entity.surface.name
currentFakeTunnel.to_stop = entity
currentFakeTunnel.to_rail = entity.connected_rail
local uniqueId = addTunnel(currentFakeTunnel)
game.print("Created fake tunnel with id: " .. uniqueId .. ' => ' .. serpent.block(currentFakeTunnel))
end
local function removeTunnel(tunnel)
if not (tunnel.from_stop.valid and tunnel.to_stop.valid) then return end
local rail_position
local uniqueId = tunnel.from_stop.unit_number .. ':' .. tunnel.to_stop.unit_number
global.trainTunnels[uniqueId] = nil
rail_position = tunnel.from_rail.position
if global.trainTunnelsRailLookup[tunnel.from_surface] then
global.trainTunnelsRailLookup[tunnel.from_surface]:removeObject({
x = rail_position.x,
y = rail_position.y,
width = 1,
height = 1,
tunnel = uniqueId
})
end
rail_position = tunnel.to_rail.position
if global.trainTunnelsRailLookup[tunnel.to_surface] then
global.trainTunnelsRailLookup[tunnel.to_surface]:removeObject({
x = rail_position.x,
y = rail_position.y,
width = 1,
height = 1,
tunnel = uniqueId
})
end
global.trainTunnelsStopLookup[tunnel.from_stop.unit_number] = nil
global.trainTunnelsStopLookup[tunnel.to_stop.unit_number] = nil
end
local function ensureSurfaceByName(surfaceName)
if game.surfaces[surfaceName] then
return game.surfaces[surfaceName]
end
local newSurface = game.create_surface(surfaceName, {
starting_area = "none",
water = "none",
cliff_settings = { cliff_elevation_0 = 1024 },
default_enable_all_autoplace_controls = false,
autoplace_controls = nil,
autoplace_settings = {
decorative = { treat_missing_as_default = false },
entity = { treat_missing_as_default = false },
tile = {
treat_missing_as_default = false,
settings = {
["landfill"] = {
frequency = "normal",
size = "normal",
}
}
},
}
})
newSurface.daytime = 0.5
newSurface.freeze_daytime = 1
newSurface.peaceful_mode = 1
for _, entity in pairs(newSurface.find_entities_filtered({ type = 'resource'})) do
entity.destroy()
end
return newSurface
end
local function getSurfaceBelow(surface)
local surfaceBelow
local maxdepth = settings.global["traintunnel-maxdepth"].value
if surface.name == "nauvis" then
surfaceBelow = "underground_1"
elseif find(surface.name, 'underground_',1,true) then
local level = gsub(surface.name, 'underground%_', "") + 0
if level < maxdepth then
surfaceBelow = "underground_" .. (level + 1)
else
surfaceBelow = surface.name
end
end
return ensureSurfaceByName(surfaceBelow)
end
local function getSurfaceAbove(surface)
local surfaceAbove
if surface.name == "nauvis" then
surfaceAbove = "nauvis" -- should cause invalid
elseif find(surface.name, 'underground_',1,true) then
local level = gsub(surface.name, 'underground%_', "")
if level == "1" then
surfaceAbove = "nauvis"
else
surfaceAbove = "underground_" .. (level - 1)
end
end
return ensureSurfaceByName(surfaceAbove)
end
local lowerTunnelStructures = {
[1] = {-4, 6,"traintunnelup"},
[2] = {-2, 0,"straight-rail"},
[3] = {-2, 2,"straight-rail"},
[4] = {-2, 4,"straight-rail"},
[5] = {-2, 6,"straight-rail", true},
[6] = {-2, 8,"straight-rail"}
}
local upperTunnelStructures = {
[1] = {-4, 6,"traintunnel"},
[2] = {-2,-2,"straight-rail"},
[3] = {-2, 0,"straight-rail", true},
[4] = {-2, 2,"straight-rail"},
[5] = {-2, 4,"straight-rail"},
[6] = {-2, 6,"straight-rail"},
}
local function removeTunnelDown(entity)
local s = entity.surface
local p = entity.position
local d = entity.direction
local ts = getSurfaceBelow(entity.surface)
local tunnelId = global.trainTunnelsStopLookup[entity.unit_number]
if tunnelId ~= nil then
removeTunnel(global.trainTunnels[tunnelId])
end
local rotation
if bit32.band(d, 2) == 0 then
rotation = { 1, 0, 0, 1 }
else
rotation = { 0, -1, 1, 0 }
end
if bit32.band(d, 4) == 4 then
for i = 1, 4 do rotation[i] = -rotation[i] end
end
for _, structure in ipairs(upperTunnelStructures) do
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
local e = s.find_entity(structure[3], {x = p.x+ox, y = p.y+oy})
if e and e.valid then
if structure[3] ~= "straight-rail" then
e.destroy()
else
e.minable = true
end
end
end
for _, structure in ipairs(lowerTunnelStructures) do
if structure[3] ~= "straight-rail" then
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
local e = ts.find_entity(structure[3], {x = p.x+ox, y = p.y+oy})
if e and e.valid then
e.destroy()
end
end
end
end
local function removeTunnelUp(entity)
local ts = entity.surface
local p = entity.position
local d = entity.direction
local s = getSurfaceAbove(entity.surface)
local tunnelId = global.trainTunnelsStopLookup[entity.unit_number]
if tunnelId ~= nil then
removeTunnel(global.trainTunnels[tunnelId])
end
local rotation
if bit32.band(d, 2) == 0 then
rotation = { 1, 0, 0, 1 }
else
rotation = { 0, -1, 1, 0 }
end
if bit32.band(d, 4) == 4 then
for i = 1, 4 do rotation[i] = -rotation[i] end
end
for _, structure in ipairs(upperTunnelStructures) do
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
local e = s.find_entity(structure[3], {x = p.x+ox, y = p.y+oy})
if e and e.valid then
if structure[3] ~= "straight-rail" then
e.destroy()
else
e.minable = true
end
end
end
for _, structure in ipairs(lowerTunnelStructures) do
if structure[3] ~= "straight-rail" then
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
local e = ts.find_entity(structure[3], {x = p.x+ox, y = p.y+oy})
if e and e.valid then
e.destroy()
end
end
end
return
--[[
local tunnelId = global.trainTunnelsStopLookup[entity.unit_number]
if not global.trainTunnels[tunnelId] then return end
removeTunnelDown(global.trainTunnels[tunnelId].from_stop)
--]]
end
local function findOrPlaceEntity(surfaceName, entityDefinition)
local surface = game.surfaces[surfaceName]
if not surface.is_chunk_generated(entityDefinition.position) then
surface.request_to_generate_chunks(entityDefinition.position, 1)
surface.force_generate_chunk_requests()
end
if not surface.can_place_entity(entityDefinition) then
local entityAtPosition = surface.find_entity(entityDefinition.name, entityDefinition.position)
if entityAtPosition and entityAtPosition.valid then
return entityAtPosition
end
else
return surface.create_entity(entityDefinition)
end
return false
end
local function createTunnelDown(entity, player_index)
local p = entity.position
local d = entity.direction
local rotation
if bit32.band(d, 2) == 0 then
rotation = { 1, 0, 0, 1 }
else
rotation = { 0, -1, 1, 0 }
end
if bit32.band(d, 4) == 4 then
for i = 1, 4 do rotation[i] = -rotation[i] end
end
local tunnel = {
from_surface = entity.surface.name,
from_stop = 0,
from_rail = 0,
to_surface = 0,
to_stop = 0,
to_rail = 0,
}
tunnel.to_surface = getSurfaceBelow(entity.surface).name
local tobeCreated, lastCreated
for _, structure in ipairs(upperTunnelStructures) do
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
tobeCreated = {
name = structure[3],
force = game.forces.player,
position = {x=p.x+ox, y=p.y+oy},
direction = d
}
lastCreated = findOrPlaceEntity(tunnel.from_surface, tobeCreated)
if lastCreated and not (tobeCreated.name == "traintunnel" or tobeCreated.name == "traintunnelup") then
lastCreated.minable = false
end
if lastCreated and structure[3] == "traintunnel" then
tunnel.from_stop = lastCreated
end
if lastCreated and structure[4] == true then
tunnel.from_rail = lastCreated
end
end
for _, structure in ipairs(lowerTunnelStructures) do
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
tobeCreated = {
name = structure[3],
force = game.forces.player,
position = {x=p.x+ox, y=p.y+oy},
direction = (d + 4) % 8
}
lastCreated = findOrPlaceEntity(tunnel.to_surface, tobeCreated)
if lastCreated and structure[3] == "traintunnelup" then
tunnel.to_stop = lastCreated
end
if lastCreated and structure[4] == true then
tunnel.to_rail = lastCreated
end
end
local valid = true
for _ in pairs(tunnel) do
if tunnel[_] == 0 then
valid = false;
break
end
end
if not valid then
removeTunnelDown(entity)
game.players[player_index].insert{name = "traintunnel", count=1}
else
addTunnel(tunnel)
end
end
local function createTunnelUp(entity, player_index)
local p = entity.position
local d = entity.direction
local rotation
if bit32.band(d, 2) == 0 then
rotation = { 1, 0, 0, 1 }
else
rotation = { 0, -1, 1, 0 }
end
if bit32.band(d, 4) == 4 then
for i = 1, 4 do rotation[i] = -rotation[i] end
end
local tunnel = {
from_surface = 0,
from_stop = 0,
from_rail = 0,
to_surface = entity.surface.name,
to_stop = 0,
to_rail = 0,
}
tunnel.from_surface = getSurfaceAbove(entity.surface).name
local tobeCreated, lastCreated
for _, structure in ipairs(lowerTunnelStructures) do
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
tobeCreated = {
name = structure[3],
force = game.forces.player,
position = {x=p.x+ox, y=p.y+oy},
direction = d
}
lastCreated = findOrPlaceEntity(tunnel.to_surface, tobeCreated)
if lastCreated and structure[3] == "traintunnelup" then
tunnel.to_stop = lastCreated
end
if lastCreated and structure[4] == true then
tunnel.to_rail = lastCreated
end
end
for _, structure in ipairs(upperTunnelStructures) do
local ox, oy = structure[1], structure[2]
ox, oy = rotation[1] * ox + rotation[2] * oy, rotation[3] * ox + rotation[4] * oy
tobeCreated = {
name = structure[3],
force = game.forces.player,
position = {x=p.x+ox, y=p.y+oy},
direction = (d + 4) % 8
}
lastCreated = findOrPlaceEntity(tunnel.from_surface, tobeCreated)
if lastCreated and not (tobeCreated.name == "traintunnel" or tobeCreated.name == "traintunnelup") then
lastCreated.minable = false
end
if lastCreated and structure[3] == "traintunnel" then
tunnel.from_stop = lastCreated
end
if lastCreated and structure[4] == true then
tunnel.from_rail = lastCreated
end
end
local valid = true
for _ in pairs(tunnel) do
if tunnel[_] == 0 then
valid = false;
break
end
end
if not valid then
removeTunnelUp(entity)
game.players[player_index].insert{name = "traintunnelup", count=1}
else
addTunnel(tunnel)
end
end
local checkplayerleft = function (event)
local player_index = event.player_index
for _, superTrain in pairs(global.superTrains) do
if superTrain.player_index == player_index then
superTrain.player_index = nil
superTrain.checkWhenStopped = true
goto found
end
for i=1, #superTrain.passengers do
if superTrain.passengers[i] == player_index then
remove(superTrain.passengers, i)
goto found -- can not be in more than one train at the same time
end
end
end
::found::
end
local findPlayerInMovers = function(train, player_index)
local foundInLoco
local frontMovers = train.locomotives.front_movers
if frontMovers then
for _, loco in ipairs(frontMovers) do
local driver = loco.get_driver()
if driver and ((not driver.is_player() and driver.player.index == player_index) or (driver.is_player() and driver.index == player_index)) then
foundInLoco = loco
break
end
end
end
if not foundInLoco then
local backMovers = train.locomotives.back_movers
if backMovers then
for _, loco in ipairs(backMovers) do
local driver = loco.get_driver()
if driver and ((not driver.is_player() and driver.player.index == player_index) or (driver.is_player() and driver.index == player_index)) then
foundInLoco = loco
break
end
end
end
end
if not foundInLoco then
if frontMovers and frontMovers[1] then
frontMovers[1].set_driver(game.players[player_index])
else
-- game.print("no loco, no supertrain")
end
-- will get called by the set_driver event. so exit here even if there was a loco
return -1
end
return foundInLoco
end
local function find_frontloco(train)
local controlLoco
controlLoco = train.locomotives.front_movers[#train.locomotives.front_movers]
if controlLoco.speed == nil or controlLoco.speed < 0 then
controlLoco = train.locomotives.back_movers[#train.locomotives.back_movers]
end
return controlLoco
end
script.on_event(defines.events.on_tick, function(event)
global.distances = global.distances or {}
if table_size(global.superTrains) > 0 and table_size(global.trainTunnelsRailLookup) > 0 then
for trainToObserveId, trainToObserve in pairs(global.superTrains) do
for __, train in pairs(trainToObserve.trains) do
if not train.valid then
trainToObserve.trains[__] = nil
trainToObserve.trainSpeedMulti[__] = nil
end
end
if not trainToObserve.controlLoco then
if not trainToObserve.controlTrain then
goto trainDone
end
trainToObserve.controlLoco = find_frontloco(trainToObserve.controlTrain)
elseif trainToObserve.controlLoco.valid and trainToObserve.controlLoco.train.valid then
trainToObserve.controlTrain = trainToObserve.controlLoco.train
trainToObserve.controlTrainId = trainToObserve.controlLoco.train.id
end
if not (trainToObserve.controlLoco and trainToObserve.controlLoco.valid) then
global.superTrains[trainToObserveId] = nil
goto trainDone
end
if table_size(trainToObserve.trains) == 1 then
if trainToObserve.tunnels and table_size(trainToObserve.tunnels)>0 then
for _, __ in pairs(trainToObserve.tunnels) do
global.trainTunnels[_].lastTeleportedCarriage = {}
end
trainToObserve.tunnels = {}
end
end
if trainToObserve.controlLoco.train and trainToObserve.controlLoco.train.valid then
if trainToObserve.auto then
if not trainToObserve.controlLoco.train.manual_mode then
if trainToObserve.arrivingTunnel then
trainToObserve.controlLoco.train.manual_mode = true
trainToObserve.controlLoco.train.speed = trainToObserve.speed
trainToObserve.controlLoco.train.manual_mode = false
end
else
trainToObserve.auto = false
end
elseif trainToObserve.player_index then
trainToObserve.rs = game.players[trainToObserve.player_index].riding_state
end
trainToObserve.speed = trainToObserve.controlLoco.train.speed
if trainToObserve.speed == 0 then
if not (trainToObserve.checkWhenStopped and tryToDisolveSupertrain(trainToObserveId)) then
if table_size(trainToObserve.trains) > 1 then
for _st, subTrain in pairs(trainToObserve.trains) do
if subTrain.valid then
subTrain.speed = 0
end
end
end
end
else
trainToObserve.schedule = trainToObserve.controlLoco.train.schedule
if trainToObserve.carriagesChanged then
trainToObserve.carriages = {}
end
-- expensive, but prevents most colliding subtrains from breaking the supertrain
-- need a better way to detect (persisting) collisions
-- [[
for _st, subTrain in pairs(trainToObserve.trains) do
if subTrain.valid then
if abs(trainToObserve.speed) > 0.1 then
if abs(subTrain.speed) < (abs(trainToObserve.speed) / 2) then
game.print("Some wagon crashed, stopping the train")
for _, t in pairs(trainToObserve.trains) do
if t.valid then
if t.speed < 0 then
t.speed = -0
else
t.speed = 0
end
end
end
goto trainDone
end
end
end
end
-- ]]
if next(trainToObserve.carriages) == nil then
for _st, subTrain in pairs(trainToObserve.trains) do
if subTrain.valid then
trainToObserve.carriages[#trainToObserve.carriages+1] = subTrain.front_stock
if subTrain.front_stock.unit_number ~= subTrain.back_stock.unit_number then
trainToObserve.carriages[#trainToObserve.carriages+1] = subTrain.back_stock
end
end
end
trainToObserve.carriagesChanged = false
end
local carriageTeleported = false
for _c=1,#trainToObserve.carriages do
local carriage = trainToObserve.carriages[_c]
if carriage and carriage.valid then
if trainToObserve.cooldown and trainToObserve.cooldown[carriage.unit_number] then
trainToObserve.cooldown[carriage.unit_number] = trainToObserve.cooldown[carriage.unit_number] - 1
if trainToObserve.cooldown[carriage.unit_number] <= 0 then
trainToObserve.cooldown[carriage.unit_number] = nil
end
else
if carriage and carriage.valid and carriage.train.valid and trainToObserve.controlLoco.valid then
local compare_rail
if #carriage.train.carriages > 1 then
if carriage.train.back_stock == carriage then
compare_rail = carriage.train.back_rail
else
compare_rail = carriage.train.front_rail
end
else
if carriage.speed < 0 then
compare_rail = carriage.train.back_rail
else
compare_rail = carriage.train.front_rail
end
end
if trainToObserve.trainSpeedMulti[carriage.train.id] == nil then
if (trainToObserve.speed * carriage.train.speed) < 0 then
trainToObserve.trainSpeedMulti[carriage.train.id] = -1
else
trainToObserve.trainSpeedMulti[carriage.train.id] = 1
end
end
local cposition = carriage.position
local range = {
x = cposition.x - 6,
y = cposition.y - 6,
w = 12,
h = 12
}
local carriageSurface = carriage.surface.name
local tunnels = global.trainTunnelsRailLookup[carriageSurface] and global.trainTunnelsRailLookup[carriageSurface]:getObjectsInRange(range) or {}
local carriagetrain = carriage.train
local isControl = false
for _t=1,#tunnels do
local tunnel = global.trainTunnels[ tunnels[_t]['tunnel']]
local from_rail, to_rail, from_stop, to_stop
if carriageSurface == tunnel.from_surface then
from_rail = tunnel.from_rail
to_rail = tunnel.to_rail
from_stop = tunnel.from_stop
to_stop = tunnel.to_stop
else
from_rail = tunnel.to_rail
to_rail = tunnel.from_rail
from_stop = tunnel.to_stop
to_stop = tunnel.from_stop
end
local carriage_unit_number = carriage.unit_number
if ( ((carriage.orientation == 0 or carriage.orientation == 0.5) and compare_rail.position.x == from_rail.position.x )
or ((carriage.orientation == 0.25 or carriage.orientation == 0.75) and compare_rail.position.y == from_rail.position.y))
then
local cacheKey = carriage_unit_number..':'..from_rail.unit_number
local lastDistance = global.distances[cacheKey]
local distance = entity_distance(carriage, from_stop)
if lastDistance ~= nil and lastDistance >= distance and distance - abs(carriage.speed) < 4 then
global.distances[cacheKey] = nil
isControl = trainToObserve.controlLoco.unit_number == carriage.unit_number
local connectedCarriage
if #carriagetrain.carriages > 1 then
for _=1,#carriagetrain.carriages do
local c = carriagetrain.carriages[_]
if c.unit_number == carriage_unit_number then
if _ == 1 then
connectedCarriage = carriagetrain.carriages[_+1]
else
connectedCarriage = carriagetrain.carriages[_-1]
end
end
end
end
local pre = {
speedMulti = trainToObserve.trainSpeedMulti[carriagetrain.id],
speed = carriagetrain.speed,
frontFartherAwayThanBack = train_frontfartheraway(carriage, from_stop)
}
-- TELEPORT
local lastTeleportedCarriage = global.trainTunnels[ tunnels[_t]['tunnel']].lastTeleportedCarriage and global.trainTunnels[ tunnels[_t]['tunnel']].lastTeleportedCarriage[to_stop.unit_number]
if lastTeleportedCarriage and lastTeleportedCarriage.valid then
distance = entity_distance(global.trainTunnels[ tunnels[_t]['tunnel']].lastTeleportedCarriage[to_stop.unit_number], to_stop) - 6
else
distance = 6 - distance - (lastDistance - distance)
end
local entity = teleport.teleportCarriage(trainToObserve, _c, from_stop, to_stop, distance)
if entity == false then
game.print("unable to teleport, try again later")
-- global.trainTunnels[ tunnels[_t]['tunnel']].lastTeleportedCarriage = nil
--[[
carriage.color = {r=0, g=0, b=1}
for _, t in pairs(trainToObserve.trains) do
t.manual_mode = true
t.speed = 0
end
--]]
-- return
goto carriagedone
end
global.trainTunnels[ tunnels[_t]['tunnel']].lastTeleportedCarriage = global.trainTunnels[tunnels[_t]['tunnel']].lastTeleportedCarriage or {}
global.trainTunnels[ tunnels[_t]['tunnel']].lastTeleportedCarriage[to_stop.unit_number] = entity
trainToObserve.tunnels = trainToObserve.tunnels or {}
trainToObserve.tunnels[tunnels[_t]['tunnel']] = 1
-- entity.minable = false;
global.lastTeleportTick = event.tick
trainToObserve.carriages[_c] = entity
carriage = trainToObserve.carriages[_c]
carriagetrain = carriage.train
trainToObserve.trains[carriagetrain.id] = carriagetrain
trainToObserve.cooldown = trainToObserve.cooldown or {}
trainToObserve.cooldown[carriage.unit_number] = 2
if next(global.trainUIs) ~= nil then
for _, entityNumber in pairs(global.trainUIs) do
if carriage_unit_number == entityNumber then
game.players[_].opened = carriage
end
end
end
if connectedCarriage then
if (pre.speed * connectedCarriage.train.speed) < 0 then
trainToObserve.trainSpeedMulti[connectedCarriage.train.id] = pre.speedMulti * -1
else
trainToObserve.trainSpeedMulti[connectedCarriage.train.id] = pre.speedMulti * 1
end
end
if train_frontfartheraway(carriage, to_stop) == pre.frontFartherAwayThanBack then
trainToObserve.trainSpeedMulti[carriagetrain.id] = pre.speedMulti * -1
else
trainToObserve.trainSpeedMulti[carriagetrain.id] = pre.speedMulti
end
if #carriagetrain.carriages == 1 then
carriagetrain.speed = pre.speed * trainToObserve.trainSpeedMulti[carriagetrain.id]
end
if isControl then
trainToObserve.controlLoco = carriage
trainToObserve.controlTrain = carriagetrain
trainToObserve.controlTrainId = carriagetrain.id
-- todo this might break in cases
if trainToObserve.driverTrainId ~= nil and trainToObserve.driverTrainId ~= carriagetrain.id then
trainToObserve.driverTrain = carriagetrain
trainToObserve.driverTrainId = carriagetrain.id
end
if trainToObserve.auto then
local schedule = trainToObserve.controlLoco.train.schedule
schedule.current = schedule.current % #schedule.records + 1
trainToObserve.controlLoco.train.schedule = schedule
end
elseif table_size(trainToObserve.trainSpeedMulti) == 1 then
trainToObserve.trainSpeedMulti[carriagetrain.id] = 1
trainToObserve.speed = carriagetrain.speed
end
carriageTeleported = true
trainToObserve.carriagesChanged = true
goto carriagedone
end
global.distances[cacheKey] = distance
end
end
::carriagedone::
else
trainToObserve.carriages[_c] = nil
trainToObserve.carriagesChanged = true
end
end
else
trainToObserve.carriagesChanged = true
end
end
if next(trainToObserve.trains) ~= nil then
if carriageTeleported then
trainToObserve.controlLoco.train.manual_mode = true
if trainToObserve.controlLoco.train.speed * trainToObserve.speed < 0 then
trainToObserve.speed = trainToObserve.controlLoco.train.speed
trainToObserve.trainSpeedMulti[trainToObserve.controlLoco.train.id] = 1
end
for _, t in pairs(trainToObserve.trains) do
if t.valid then
if _ ~= trainToObserve.controlLoco.train.id then
if (trainToObserve.trainSpeedMulti[_] * t.speed * trainToObserve.speed) < 0 then
trainToObserve.trainSpeedMulti[_] = -trainToObserve.trainSpeedMulti[_]
end
end
end
end
end