student.adventure

Class CommandWords

java.lang.Object

student.adventure.CommandWords

public class CommandWords
extends Object

This class holds a collection of all command words known to the game. It is used to recognise commands as they are typed in. It is part of the "World of Zuul" application, a very simple text-based adventure game.

Version:

2.0 (December 2002)

Author:

Michael Kolling and David J. Barnes

Constructor Summary

Constructors

Constructor and Description
CommandWords() Constructor - initialise the command words.

Method Summary

Modifier and Type	Method and Description
void	addCommand(String word, Command command) Add (or replace) a command word.
Command	get(String word) Given a command word, find and return the matching command object.
void	showAll() Print all valid commands to System.out.

Methods inherited from class java.lang.Object

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

Constructor Detail

CommandWords

public CommandWords()

Constructor - initialise the command words.

Method Detail

get

public Command get(String word)

Given a command word, find and return the matching command object. Return null if there is no command with this name.

Parameters:

word - The word to look up

Returns:

The corresponding command, if any, or null, if the word is not in this Map

addCommand

public void addCommand(String word,
                       Command command)

Add (or replace) a command word.

Parameters:

word - the word for this command

command - the associated command object implementing this command

showAll

public void showAll()

Print all valid commands to System.out.