wyvern.lib.commands
Class GiveCommand

java.lang.Object
  extended bywyvern.lib.commands.GiveCommand
All Implemented Interfaces:
BuiltInCommand, Command

public class GiveCommand
extends java.lang.Object
implements BuiltInCommand

Implements giving something to someone.

Version:
1.0, Sep 02, 1997
Author:
Steve Yegge

Nested Class Summary
 class GiveCommand.GiveEvent
          This event class encapsulates the parameters for one monster or player giving something to another monster or player.
 
Method Summary
 void addCommands(java.util.Map commands, CommandList list)
          Tells the Command to add the commands that it wants to implement into the passed data structure.
 CommandEvent createEvent(CommandEvent initial)
          Implements Command.createEvent()
 boolean execute(CommandEvent e)
          Executes the specified CommandEvent.
static GiveCommand getImpl()
           
 boolean knowsCommand(java.lang.String command)
          Returns true if this Command wants to handle the command.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

getImpl

public static GiveCommand getImpl()

addCommands

public void addCommands(java.util.Map commands,
                        CommandList list)
Description copied from interface: BuiltInCommand
Tells the Command to add the commands that it wants to implement into the passed data structure.

Specified by:
addCommands in interface BuiltInCommand
Parameters:
commands - a Map whose keys are commands, and whose values are Commands that handle those commands.
list - the CommandList the Command is being added to.

knowsCommand

public boolean knowsCommand(java.lang.String command)
Description copied from interface: Command
Returns true if this Command wants to handle the command. The Command can examine the arguments and determine that it doesn't actually understand the command, in which case it should return false.

This method exists to allow more than one game object to implement the same command verb, but with different expected arguments.

If two objects register for the same command and the same arguments, the object that was registered most recently gets to handle at the command.

Specified by:
knowsCommand in interface Command
Parameters:
command - the entire command string, including arguments
Returns:
true if we want to handle the command

createEvent

public CommandEvent createEvent(CommandEvent initial)
Implements Command.createEvent()

Specified by:
createEvent in interface Command
Parameters:
initial - the event encapsulating the command & args
Returns:
a GiveEvent

execute

public boolean execute(CommandEvent e)
Description copied from interface: Command
Executes the specified CommandEvent. The CommandEvent contains all the parameters and state required to execute the command; the parameters have been filtered through hook objects, so they may not be the same as when the event was created.

Specified by:
execute in interface Command
Parameters:
e - the CommandEvent to execute
Returns:
true if the event completed successfully, else false.