Define the WormRailManager class which handles trains. More...

Public Member Functions
constructor	WormRailManager ()
	Create an instance of WormRailManager and initialize our variables.
function	UpdateRailType ()
	Updates the current rail type of the AI based on the maximum number of cargoes transportable.
function	BuildRailway ()
	Main function for building a railway which decides all the details.
function	RegisterRoute (route_data, station_data, vehtype, group, train_length)
	Register the new route into the database.
function	CheckRoutes ()
	Checks all routes.
function	GetOptimalTrainLength (route)
	Get the optimal train length for this route.
function	GetMinMaxTrainLength (vehicles)
	Get the minimum and maximum length of trains in the supplied list of vehicles.
function	CheckDefaultGroup ()
	Checks ungrouped vehicles.
function	CheckAddTrainToGroup (route, vehicle_count, first_vehicle)
	Check if we should add another train to the specified group.
function	SelectAndAddTrain (route)
	Select optimal wagon and train engine for the specified route and buy it if possible.
function	AddVehicle (route, mainvehicle, engine, wagon)
	Adds a new vehicle to an existing route.
function	ReplaceVehicle (vehicle)
	Replaces an old vehicle with a newer model if it is already in the depot.
function	HandleVehicleInDepot (vehicle)
	Handle a vehicle that is stopped in depot for selling, replacement or attaching wagons.
function	CheckTrainProfits ()
	Check train profits and send unprofitable ones to depot to be sold.
function	SendTrainToDepotForSelling (vehicle)
	Check train profits and send unprofitable ones to depot to be sold.
function	SaveData (table)
	Save all data that WormRailManager needs in table.
function	LoadData (table, worm_save_version)
	Load all data that WormRailManager from the table.
function	AfterLoading ()
	Do any necessary processing after a savegame has been loaded.

Static Public Member Functions
static function	SetGroupName (group, crg, stasrc)
	Set the name of a vehicle group.
static function	IsRectangleWithinTownInfluence (tile, town_id, width, height)
	Checks whether a given rectangle is within the influence of a given town.
static function	SetRailType ()
	Sets the current rail type of the AI based on the maximum number of cargoes transportable.

Public Attributes
	routes = null
	An array containing all our routes.
	groups = null
	The list of vehicle groups.
	serviced = null
	Industry/town - cargo pairs already serviced.
	railbridges = null
	The list of rail bridges.
	engine_blacklist = null
	The blacklist of train engines.
	buildingstage = null
	The current building stage.
	lastroute = null
	The date the last route was built.
	removelist = null
	An array used to continue rail removal and electrification.
	todepotlist = null
	A list of vehicles heading for the depot.
	route_without_trains = -1
	Group number or -1 of unfinished route that needs trains added.
	last_route = null
	route info table of last completed route. Needed if we still need to buy trains for this route.

Static Public Attributes
static	BS_NOTHING = 0
	Building stages, needed to recover a savegame.
static	BS_BUILDING = 1
static	BS_REMOVING = 2
static	BS_ELECTRIFYING = 3
static	TD_SELL = 1
	Reasons to send a vehicle to a depot.
static	TD_REPLACE = 2
static	TD_ATTACH_WAGONS = 3

Detailed Description

Define the WormRailManager class which handles trains.

Constructor & Destructor Documentation

constructor WormRailManager::WormRailManager ( )

inline

Create an instance of WormRailManager and initialize our variables.

Todo:: : Needs to be initialized when loading a Save!

Member Function Documentation

function WormRailManager::AddVehicle	(	route	,
		mainvehicle	,
		engine	,
		wagon
	)

Adds a new vehicle to an existing route.

Parameters

route	The route to which the new vehicle will be added.
mainvehicle	An already existing vehicle on the route to share orders with.
engine	The EngineID of the new vehicle. In case of trains it is the EngineID of the locomotive.
wagon	The EngineID of the train wagons.

Returns: True if the action succeeded.

function WormRailManager::AfterLoading ( )

Do any necessary processing after a savegame has been loaded.

Currently recomputes the values for the _optimal_train_lengths list.

function WormRailManager::BuildRailway ( )

Main function for building a railway which decides all the details.

Todo:: replace number by a definied constant or variable depending on date and other factors

Todo:: check first if we are below max no. of trains...

function WormRailManager::CheckAddTrainToGroup	(	route	,
		vehicle_count	,
		first_vehicle
	)

Check if we should add another train to the specified group.

Parameters

route	The route info table.
vehicle_count	The current number of vehicles in this group.
first_vehicle	The first vehicle in this group.

Returns: True if we added a train, otherwise false.

Todo:: remove profit check? What if first vehicle is an older type and the others are making a profit?

function WormRailManager::CheckDefaultGroup ( )

Checks ungrouped vehicles.

Under normal conditions all vehicles should be grouped.

function WormRailManager::CheckRoutes ( )

Checks all routes.

Empty routes are removed, new vehicles are added if needed, old vehicles are replaced, vehicles are restarted if sitting in the depot for no reason, rails are electrified, short trains are lengthened.

Todo:: if vehicle count = 0 because we didn't have enough money to buy trains then

Todo:: we should (try to) add trains or wait until we have more money

Todo:: Maybe add a status to routes like [nomoneyfortrains, unprofitable, ...]

Only remove route if we're not waiting for trains to be added

                see above replacement
            if (vehicles.Count() == 1 && route.maxvehicles == 2 && (!AIVehicle.IsStoppedInDepot(vehicles.Begin()))) {
                    if (AIVehicle.GetProfitThisYear(vehicles.Begin()) <= 0) continue;
                    if (AIStation.GetCargoWaiting(route.stasrc, route.crg) > 150) {
                            local railtype = AIRail.GetCurrentRailType();
                            AIRail.SetCurrentRailType(route.railtype);
                            local wagon = WormRailBuilder.ChooseWagon(route.crg, engine_blacklist);
                            if (wagon == null) {
                                    AIRail.SetCurrentRailType(railtype);
                                    return false;
                            }
                            local platform = WormRailBuilder.GetRailStationPlatformLength(route.stasrc);
                            local engine = WormRailBuilder.ChooseTrainEngine(route.crg, AIMap.DistanceManhattan(AIStation.GetLocation(route.stasrc), 
                                    AIStation.GetLocation(route.stadst)), wagon, platform * 2 - 1, engine_blacklist);
                            if (engine == null) {
                                    AIRail.SetCurrentRailType(railtype);
                                    return false;
                            }

Check if we can afford it if (WormMoney.GetMaxBankBalance() > (WormMoney.GetMinimumCashNeeded() + AIEngine.GetPrice(engine) + 4 * AIEngine.GetPrice(wagon))) { if (WormRailManager.AddVehicle(route, vehicles.Begin(), engine, wagon)) { AILog.Info("Added train to route: " + AIStation.GetName(route.stasrc) + " - " + AIStation.GetName(route.stadst)); } } AIRail.SetCurrentRailType(railtype); } }

Todo:: Don't use platform length but compute optimal length for this group!

Todo:: maybe do this for all trains in one go instead of per group probably more efficient

function WormRailManager::CheckTrainProfits ( )

Check train profits and send unprofitable ones to depot to be sold.

Todo:: possible duplicate code with profit checking in air manager. Maybe combine in 1 function?

Todo:: Do this on a per group basis (each route a group).

Todo:: That way we can decide to not check a group wich was created less than x years ago.

Todo:: When maintenance costs are on we should set low profit limit too at least the yearly costs.

Todo:: When maintenance costs are on we should set low profit limit too at least the yearly costs.

Todo:: Don't sell all trans from the same route all at once, try selling 1 per year?

function WormRailManager::GetMinMaxTrainLength ( vehicles )

Get the minimum and maximum length of trains in the supplied list of vehicles.

Parameters

vehicles AIVehicleList containing the vehicles.

Returns: A table giving "min_length" and "max_length" of the shortest and longest vehicle in the list.

Note: The length is given in 1/16 of a tile, thus a one tile train has length 16.

Precondition: vehicles should not be null.

function WormRailManager::GetOptimalTrainLength ( route )

Get the optimal train length for this route.

Parameters

route The route info.

Returns: The optimal length in 1/16 of a tile.

Todo:: We should get the amount of cargo our average wagon can carry. Assume 25 for now.

function WormRailManager::HandleVehicleInDepot ( vehicle )

Handle a vehicle that is stopped in depot for selling, replacement or attaching wagons.

Parameters

vehicle The vehicle stopped in depot.

function WormRailManager::IsRectangleWithinTownInfluence	(	tile	,
		town_id	,
		width	,
		height
	)

static

Checks whether a given rectangle is within the influence of a given town.

Parameters

tile	The topmost tile of the rectangle.
town_id	The TownID of the town to be checked.
width	The width of the rectangle.
height	The height of the rectangle.

Returns: True if the rectangle is within the influence of the town.

Todo:: Needs to be moved to a different unit. (Town?)

Note: Taken from SimpleAI.

function WormRailManager::LoadData	(	table	,
		worm_save_version
	)

Load all data that WormRailManager from the table.

Parameters

table	The table that has all the data.
worm_save_version	WormAI save data version.

Precondition: table should be non null.

Todo:: Should we load this?

function WormRailManager::RegisterRoute	(	route_data	,
		station_data	,
		vehtype	,
		group	,
		train_length
	)

Register the new route into the database.

Parameters

route_data	A WormRoute class object containing info about the route.
station_data	A WormStation class object containing info about the station.
vehtype	The type of vehicle using this route. Currently always VT_RAIL.
group	The vehicle group for the vehicles using this route.
train_length	The train_length we start with measure in 1/16th of a tile.

Returns: The new route registered.

Todo:: Also save IsSubsidy, ...

function WormRailManager::ReplaceVehicle ( vehicle )

Replaces an old vehicle with a newer model if it is already in the depot.

Parameters

vehicle The vehicle to be replaced.

function WormRailManager::SaveData ( table )

Save all data that WormRailManager needs in table.

Parameters

table The table to store the data in.

Precondition: table should be non null.

Todo:: Should we save this?

\xrefitem todo 49.

Todo:: EventQueue, bridgesupgraded?, inauguration?, bs_building building stage

function WormRailManager::SelectAndAddTrain ( route )

Select optimal wagon and train engine for the specified route and buy it if possible.

Parameters

route The route info table.

Returns: True if we added a train, otherwise false.

function WormRailManager::SendTrainToDepotForSelling ( vehicle )

Check train profits and send unprofitable ones to depot to be sold.

Parameters

vehicle The vehicle that should be sent to depot to be sold.

function WormRailManager::SetGroupName	(	group	,
		crg	,
		stasrc
	)

static

Set the name of a vehicle group.

Parameters

group	The GroupID of the group.
crg	The cargo transported.
stasrc	The source station.

Note: Taken from SimpleAI.

Todo:: Move to a different unit, should be accessible from other managers too.

function WormRailManager::SetRailType ( )

static

Sets the current rail type of the AI based on the maximum number of cargoes transportable.

Returns: The new railtype that has been set.

Todo:: Possible better evaluation what rail type is the most profitable.

Member Data Documentation

WormRailManager::BS_NOTHING = 0

static

Building stages, needed to recover a savegame.

WormRailManager::TD_SELL = 1

static

Reasons to send a vehicle to a depot.

The documentation for this class was generated from the following file:

railmanager.nut

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation