Class BuyCommand

Object

NormalCommand

BuyCommand

All Implemented Interfaces:

Command

public class BuyCommand
extends NormalCommand

Buys an item from a shopkeeper. Syntax : buy [<amount>] <item> from <character>. For example "buy bucket to Karcas".

Author:

maartenl

See Also:

• SellCommand

Constructor Summary

Constructors

Constructor	Description
BuyCommand(String aRegExpr)

Method Summary

Modifier and Type	Method	Description
DisplayInterface	run(String command, User aUser)	Tries out the buy command.

Methods inherited from class NormalCommand

getAdminService, getChatService, getEventsService, getGuildService, getHelpService, getItemService, getLogService, getPersonService, getRegExpr, parseCommand, parseCommand, setCallback

Methods inherited from class Object

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

Constructor Details

BuyCommand

public BuyCommand(String aRegExpr)

Method Details

run

public DisplayInterface run(String command,
 User aUser)
                     throws MudException

Tries out the buy command. There are a couple of requirements that need to be met, before a successful sale takes place.

1. command struct. should be "buy [<amount>] <item> from <character>", for example: "sell gold ring to Karcas".
2. shopkeeper selling the item should
   1. exist,
   2. be in the same room and
   3. have a god==4 to indicate a "shopkeeper" and
   4. has the item for sale
3. the customer should have the money
4. the item itself should NOT have a attribute called "notbuyable".
5. the item should not contain any items

A best effort is tried, this means the following sequence of events:

1. the item is transferred into the inventory of the user
2. money is transferred into the inventory of the shopkeeper
3. continue with next item

Specified by:

run in interface Command

Specified by:

run in class NormalCommand

Parameters:

command - the command entered.

aUser - the character doing the buying.

Returns:

a simple displayinterface, in our case the room.

Throws:

MudException - if something goes wrong.