ch.sahits.game.openpatrician.engine.player.strategy

Class BasePlayerTradeStrategy

java.lang.Object

ch.sahits.game.openpatrician.engine.player.strategy.BasePlayerTradeStrategy

All Implemented Interfaces:

ch.sahits.game.openpatrician.model.player.IAITradeStrategy

Direct Known Subclasses:

CheapProductionTradeStrategy, CollectionWaresStrategy, ProductionChainTradeStrategy, SupplyHometownAIStrategy, TradeRouteTradeStrategy

public abstract class BasePlayerTradeStrategy
extends Object
implements ch.sahits.game.openpatrician.model.player.IAITradeStrategy

Base implementation of the trading strategy. The base strategy maintains a list of TradeSteps, that are executed in order. Once the list is empty the next steps need to be defined. It might be that the last executed step complets a trade cycle and the next step would be the repetition of the first.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	BasePlayerTradeStrategy.WareNeedComparator

Field Summary

Fields

Modifier and Type	Field and Description
private org.springframework.context.ApplicationContext	context
private PathInterpolatorMap	interpolators
private org.apache.logging.log4j.Logger	logger
private MapProxy	mapProxy
private MapService	mapService
protected ch.sahits.game.openpatrician.model.player.IAITradeStrategyType	tradeStrategyType

Constructor Summary

Constructors

Constructor and Description
BasePlayerTradeStrategy()

Method Summary

Modifier and Type	Method and Description
protected void	addDefaultTradeSteps(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.city.ICity city, ch.sahits.game.openpatrician.model.city.ICity nextStop, Set<ch.sahits.game.openpatrician.model.product.IWare> nonSellableWares, Set<ch.sahits.game.openpatrician.model.product.IWare> buyWares, boolean skipRepair) Add default trading steps: AggregatesSellTradeStep PayBackLoanTradeStep PayBackLoanTradeStep AggregatedCheckedBuyTradeStep CheckForRepairTradeStep HireSailorsStep TravelToTradeStep
void	append(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.product.ITradeStep step) Add a new trade step for a player.
protected AggregatedBuyTradeStep	createAggregatedBuyTradeStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, List<ch.sahits.game.openpatrician.model.product.IWare> waresToBuy)
protected AggregatedCheckedBuyTradeStep	createAggregatedCheckedBuyTradeStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, List<ch.sahits.game.openpatrician.model.product.IWare> waresToBuy)
protected AggregatesDumpTradeStep	createAggregatedDumpStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, List<ch.sahits.game.openpatrician.model.product.IWare> waresToSell)
protected AggregatesSellTradeStep	createAggregatedSellStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, List<ch.sahits.game.openpatrician.model.product.IWare> waresToSell)
protected TakeLoanTradeStep	createCheckAndTakeLoanStep(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.city.ICity city) Create a new instance of the TakeLoan trade step.
protected CheckForRepairTradeStep	createCheckRepairStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city) Create the trade step to check for repairs.
protected AmountBasedAggregatedDumpTradeStep	createConditionalAggregatedDumpStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, List<ch.sahits.game.openpatrician.model.product.IWare> waresToSell, int maxAmount) Create a conditional dump trade step.
protected CheckHireCaptainTradeStep	createHireCaptain(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, ch.sahits.game.openpatrician.model.IAIPlayer player) Create the trade step to check and hire a captain.
protected HireSailorsStep	createHireSailorStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city) Create a new instance forthe hire sailor step.
protected GuildJoinTradeStep	createJoinGuildTradeStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity city, ch.sahits.game.openpatrician.model.IAIPlayer player)
protected PayBackLoanTradeStep	createPaybackLoanStep(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.city.ICity city) Create a new instance of the TakeLoan trade step.
protected TravelToTradeStep	createTravelToStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity travelToCity) Create the travel step to a different city.
boolean	executeTradeSteps(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel) The implementation of the execute trade steps makes the following assumptions: When called there is at least one trade step defined Typically the trade steps are defined up to the travel step.
(package private) ch.sahits.game.openpatrician.model.city.ICity	findCitySupplyingWare(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.product.IWare ware, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, Optional<ch.sahits.game.openpatrician.model.city.ICity> excludeCity) Finding a destination that can supply a ware.
(package private) Optional<ch.sahits.game.openpatrician.model.city.ICity>	findCityWithAllRequiredWares(List<ch.sahits.game.openpatrician.model.product.IWare> requiredWares, ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, Optional<ch.sahits.game.openpatrician.model.city.ICity> excludeCity) Find a destination city that requires all the wares.
protected ch.sahits.game.openpatrician.model.city.ICity	findDestinationToBuyRequiredProductionWares(ch.sahits.game.openpatrician.model.IAIPlayer player, List<ch.sahits.game.openpatrician.model.product.IWare> requiredWares, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, Optional<ch.sahits.game.openpatrician.model.city.ICity> excludeCity) Determine the city to travel to based on the required wares.
protected ch.sahits.game.openpatrician.model.city.ICity	findNextStop(ch.sahits.game.openpatrician.model.city.ICity baseTown, ch.sahits.game.openpatrician.model.player.IProductionConsumptionKnowledge knowledge, List<ch.sahits.game.openpatrician.model.product.IWare> waresOfInterest, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.city.ICity exclude) Figure out what the next stop should be to supply the ware in the list waresOfInterest.
protected ArrayList<ch.sahits.game.openpatrician.model.product.IWare>	findWaresOfInterest(List<javafx.util.Pair<ch.sahits.game.openpatrician.model.product.IWare,Number>> sortedNeeds)
protected List<ch.sahits.game.openpatrician.model.product.IWare>	getLoadedWares(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel) Find all wares that are loaded on the ship.
List<javafx.util.Pair<ch.sahits.game.openpatrician.model.product.IWare,Number>>	getMostNeededWares(ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledge) Figure out the ware that are most needed in the city.
List<javafx.util.Pair<ch.sahits.game.openpatrician.model.product.IWare,Number>>	getMostNeededWares(ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledge, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel) Figure out the ware that are most needed in the city.
ch.sahits.game.openpatrician.model.product.ITradeStep	getNextStep(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel) Retrieve the next trade step that should be executed and remove it from the list of an AI player.
protected List<ch.sahits.game.openpatrician.model.product.IWare>	getWaresNeedIn(ch.sahits.game.openpatrician.model.player.IProductionConsumptionKnowledge knowledge, ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledgeCurrentTown, ch.sahits.game.openpatrician.model.city.ICity nextStop) Figure out what wares are needed in nextStop, that can be provided in the current town.
void	handleHireSailors(HireSailorEvent event) Andling the hiring of sailors.
void	handleRepairFinished(RepairFinishedEvent event) Handle the event of the ship coming back from repair and the trade steps have to be picked up again.
boolean	hasMoreTradeSteps(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel) Check whether the AI player has more trade steps
void	inject(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.model.product.ITradeStep step) Add a new trade step to the begining of the list.
protected boolean	isMatchingTradeStrategy(ch.sahits.game.openpatrician.model.IAIPlayer player, ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)
boolean	isNeeded(ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledge, ch.sahits.game.openpatrician.model.product.IWare ware) Check if the ware is needed in a city.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ch.sahits.game.openpatrician.model.player.IAITradeStrategy

handleShipArrivesInPort, initialzeTradeCycle

Field Detail

logger

private final org.apache.logging.log4j.Logger logger

mapProxy

@Autowired
private MapProxy mapProxy

context

@Autowired
private org.springframework.context.ApplicationContext context

mapService

@Autowired
private MapService mapService

interpolators

@Autowired
private PathInterpolatorMap interpolators

tradeStrategyType

protected ch.sahits.game.openpatrician.model.player.IAITradeStrategyType tradeStrategyType

Constructor Detail

BasePlayerTradeStrategy

public BasePlayerTradeStrategy()

Method Detail

isMatchingTradeStrategy

protected boolean isMatchingTradeStrategy(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                          ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)

getNextStep

public ch.sahits.game.openpatrician.model.product.ITradeStep getNextStep(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                                                         ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)

Retrieve the next trade step that should be executed and remove it from the list of an AI player.

Parameters:

player - on witch to retrieve the next task

Returns:

hasMoreTradeSteps

public boolean hasMoreTradeSteps(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                 ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)

Check whether the AI player has more trade steps

Parameters:

player - on which to check

Returns:

append

public void append(ch.sahits.game.openpatrician.model.IAIPlayer player,
                   ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                   ch.sahits.game.openpatrician.model.product.ITradeStep step)

Add a new trade step for a player.

Parameters:

player - for which to add the trade step

step - to be added.

inject

public void inject(ch.sahits.game.openpatrician.model.IAIPlayer player,
                   ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                   ch.sahits.game.openpatrician.model.product.ITradeStep step)

Add a new trade step to the begining of the list.

Parameters:

player - for which to add the trade step

step - to be added.

vessel -

getMostNeededWares

public List<javafx.util.Pair<ch.sahits.game.openpatrician.model.product.IWare,Number>> getMostNeededWares(ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledge)

Figure out the ware that are most needed in the city. The need is calculated upon the knowledge of the production, consumption and sotred amount. If a ware is not consumed at all it is not needed at all, compared to wares that have more consumption than stored + produced.

Parameters:

knowledge - base knowledge

Returns:

sorted list Pair of wares and their importants. The lower the number the more important.

isNeeded

public boolean isNeeded(ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledge,
                        ch.sahits.game.openpatrician.model.product.IWare ware)

Check if the ware is needed in a city.

Parameters:

knowledge - of the city that should be checked.

ware - for which should be checked.

Returns:

true if there is not much of the ware around.

getMostNeededWares

public List<javafx.util.Pair<ch.sahits.game.openpatrician.model.product.IWare,Number>> getMostNeededWares(ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledge,
                                                                                                          ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)

Figure out the ware that are most needed in the city. The need is calculated upon the knowledge of the production, consumption and sotred amount. If a ware is not consumed at all it is not needed at all, compared to wares that have more consumption than stored + produced. Also consider the amount of that ware that is loaded on the vessel. That ware is treated the same way as if it stored in the city, with the effect that on the first call the most needed ware might be BEER, but once an amount is bought the most needed ware might change.

Parameters:

knowledge - base knowledge

vessel - on which the wares are loaded.

Returns:

sorted list Pair of wares and their importants. The lower the number the more important.

getWaresNeedIn

protected List<ch.sahits.game.openpatrician.model.product.IWare> getWaresNeedIn(ch.sahits.game.openpatrician.model.player.IProductionConsumptionKnowledge knowledge,
                                                                                ch.sahits.game.openpatrician.model.player.ICityProductionConsumptionKnowledge knowledgeCurrentTown,
                                                                                ch.sahits.game.openpatrician.model.city.ICity nextStop)

Figure out what wares are needed in nextStop, that can be provided in the current town.

Parameters:

knowledge - base knowledge

knowledgeCurrentTown - knowledge of the current town

nextStop - stop of the next city.

Returns:

list of wares that can be delivered from the current city to the nextStop

findNextStop

protected ch.sahits.game.openpatrician.model.city.ICity findNextStop(ch.sahits.game.openpatrician.model.city.ICity baseTown,
                                                                     ch.sahits.game.openpatrician.model.player.IProductionConsumptionKnowledge knowledge,
                                                                     List<ch.sahits.game.openpatrician.model.product.IWare> waresOfInterest,
                                                                     ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                                     ch.sahits.game.openpatrician.model.city.ICity exclude)

Figure out what the next stop should be to supply the ware in the list waresOfInterest. This list is ordered so that wares in the front are more important.

Parameters:

baseTown - city from which the travel starts

knowledge - data

waresOfInterest - ordered list of needed wares

exclude - city to which should not be traveled.

Returns:

City that can provide at least some of the wares and is not to far away.

createTravelToStep

protected TravelToTradeStep createTravelToStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                               ch.sahits.game.openpatrician.model.city.ICity travelToCity)

Create the travel step to a different city.

Parameters:

vessel - that is travelling

travelToCity - destination city

Returns:

TravelToTradeStep

createCheckRepairStep

protected CheckForRepairTradeStep createCheckRepairStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                        ch.sahits.game.openpatrician.model.city.ICity city)

Create the trade step to check for repairs.

Parameters:

vessel - that should be checked.

city - in which should be checked.

Returns:

CheckForRepairTradeStep

createHireSailorStep

protected HireSailorsStep createHireSailorStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                               ch.sahits.game.openpatrician.model.city.ICity city)

Create a new instance forthe hire sailor step.

Parameters:

vessel -

city -

Returns:

createCheckAndTakeLoanStep

protected TakeLoanTradeStep createCheckAndTakeLoanStep(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                                       ch.sahits.game.openpatrician.model.city.ICity city)

Create a new instance of the TakeLoan trade step.

Parameters:

player - that takes a loan

city - in which the loan is taken

Returns:

createPaybackLoanStep

protected PayBackLoanTradeStep createPaybackLoanStep(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                                     ch.sahits.game.openpatrician.model.city.ICity city)

Create a new instance of the TakeLoan trade step.

Parameters:

player - that takes a loan

city - in which the loan is taken

Returns:

createAggregatedBuyTradeStep

protected AggregatedBuyTradeStep createAggregatedBuyTradeStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                              ch.sahits.game.openpatrician.model.city.ICity city,
                                                              List<ch.sahits.game.openpatrician.model.product.IWare> waresToBuy)

createAggregatedCheckedBuyTradeStep

protected AggregatedCheckedBuyTradeStep createAggregatedCheckedBuyTradeStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                                            ch.sahits.game.openpatrician.model.city.ICity city,
                                                                            List<ch.sahits.game.openpatrician.model.product.IWare> waresToBuy)

createAggregatedSellStep

protected AggregatesSellTradeStep createAggregatedSellStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                           ch.sahits.game.openpatrician.model.city.ICity city,
                                                           List<ch.sahits.game.openpatrician.model.product.IWare> waresToSell)

createAggregatedDumpStep

protected AggregatesDumpTradeStep createAggregatedDumpStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                           ch.sahits.game.openpatrician.model.city.ICity city,
                                                           List<ch.sahits.game.openpatrician.model.product.IWare> waresToSell)

createConditionalAggregatedDumpStep

protected AmountBasedAggregatedDumpTradeStep createConditionalAggregatedDumpStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                                                 ch.sahits.game.openpatrician.model.city.ICity city,
                                                                                 List<ch.sahits.game.openpatrician.model.product.IWare> waresToSell,
                                                                                 int maxAmount)

Create a conditional dump trade step. All wares are sold if the ships load is greater than the maxAmount.

Parameters:

vessel - in the trade step

city - where the trade step happens

waresToSell - list of wares that should be sold

maxAmount - max amount of wares that should be on the ship

Returns:

dump sell trade step

createHireCaptain

protected CheckHireCaptainTradeStep createHireCaptain(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                      ch.sahits.game.openpatrician.model.city.ICity city,
                                                      ch.sahits.game.openpatrician.model.IAIPlayer player)

Create the trade step to check and hire a captain.

Parameters:

vessel -

city -

player -

Returns:

createJoinGuildTradeStep

protected GuildJoinTradeStep createJoinGuildTradeStep(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                      ch.sahits.game.openpatrician.model.city.ICity city,
                                                      ch.sahits.game.openpatrician.model.IAIPlayer player)

executeTradeSteps

public boolean executeTradeSteps(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                 ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)

The implementation of the execute trade steps makes the following assumptions:

• When called there is at least one trade step defined

Typically the trade steps are defined up to the travel step. When the ship then reaches the port the next steps need to be defined.

Specified by:

executeTradeSteps in interface ch.sahits.game.openpatrician.model.player.IAITradeStrategy

Parameters:

player -

vessel -

Returns:

handleRepairFinished

public void handleRepairFinished(RepairFinishedEvent event)

Handle the event of the ship coming back from repair and the trade steps have to be picked up again.

Parameters:

event -

handleHireSailors

public void handleHireSailors(HireSailorEvent event)

Andling the hiring of sailors. This event is fired when the last try to hire sailors failed to insufficient amount of sailors available.

Parameters:

event -

getLoadedWares

protected List<ch.sahits.game.openpatrician.model.product.IWare> getLoadedWares(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel)

Find all wares that are loaded on the ship.

Parameters:

vessel -

Returns:

findWaresOfInterest

protected ArrayList<ch.sahits.game.openpatrician.model.product.IWare> findWaresOfInterest(List<javafx.util.Pair<ch.sahits.game.openpatrician.model.product.IWare,Number>> sortedNeeds)

findDestinationToBuyRequiredProductionWares

protected ch.sahits.game.openpatrician.model.city.ICity findDestinationToBuyRequiredProductionWares(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                                                                                    List<ch.sahits.game.openpatrician.model.product.IWare> requiredWares,
                                                                                                    ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                                                                    Optional<ch.sahits.game.openpatrician.model.city.ICity> excludeCity)

Determine the city to travel to based on the required wares. If there is a city that provides all the wares it is chosen otherwise a city that provides part of the wares is returned.

Parameters:

player -

requiredWares - list of required wares

excludeCity - origin city to which should not be traveled.

Returns:

findCityWithAllRequiredWares

Optional<ch.sahits.game.openpatrician.model.city.ICity> findCityWithAllRequiredWares(List<ch.sahits.game.openpatrician.model.product.IWare> requiredWares,
                                                                                     ch.sahits.game.openpatrician.model.IAIPlayer player,
                                                                                     ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                                                     Optional<ch.sahits.game.openpatrician.model.city.ICity> excludeCity)

Find a destination city that requires all the wares.

Parameters:

requiredWares -

player -

excludeCity -

Returns:

findCitySupplyingWare

ch.sahits.game.openpatrician.model.city.ICity findCitySupplyingWare(ch.sahits.game.openpatrician.model.IAIPlayer player,
                                                                    ch.sahits.game.openpatrician.model.product.IWare ware,
                                                                    ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                                    Optional<ch.sahits.game.openpatrician.model.city.ICity> excludeCity)

Finding a destination that can supply a ware.

Parameters:

player -

ware -

excludeCity -

Returns:

addDefaultTradeSteps

protected void addDefaultTradeSteps(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                    ch.sahits.game.openpatrician.model.IAIPlayer player,
                                    ch.sahits.game.openpatrician.model.city.ICity city,
                                    ch.sahits.game.openpatrician.model.city.ICity nextStop,
                                    Set<ch.sahits.game.openpatrician.model.product.IWare> nonSellableWares,
                                    Set<ch.sahits.game.openpatrician.model.product.IWare> buyWares,
                                    boolean skipRepair)

Add default trading steps:

1. AggregatesSellTradeStep
2. PayBackLoanTradeStep
3. PayBackLoanTradeStep
4. AggregatedCheckedBuyTradeStep
5. CheckForRepairTradeStep
6. HireSailorsStep
7. TravelToTradeStep

Parameters:

vessel - doing the trade

player - owner of the vessel

city - current city

nextStop - next stop

nonSellableWares - wares that cannot be sold

buyWares - wares that need to be bought

skipRepair - skip the task for repairing ships.