54 lines
1.4 KiB
Java
54 lines
1.4 KiB
Java
package de.szut.zuul;
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/**
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* This class is part of the "World of Zuul" application.
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* "World of Zuul" is a very simple, text based adventure game.
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*
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* This class holds an enumeration of all command words known to the game.
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* It is used to recognise commands as they are typed in.
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*
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* @author Michael Kölling and David J. Barnes
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* @version 2016.02.29
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*/
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public class CommandWords
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{
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// a constant array that holds all valid command words
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private static final String[] validCommands = {
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"go", "quit", "help", "look", "status", "take", "drop", "say", "eat"
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};
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/**
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* Constructor - initialise the command words.
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*/
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public CommandWords()
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{
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// nothing to do at the moment...
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}
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/**
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* Check whether a given String is a valid command word.
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* @return true if a given string is a valid command,
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* false if it isn't.
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*/
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public boolean isCommand(String aString)
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{
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for(int i = 0; i < validCommands.length; i++) {
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if(validCommands[i].equals(aString))
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return true;
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}
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// if we get here, the string was not found in the commands
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return false;
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}
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public String showAll()
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{
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StringBuilder exitsInString = new StringBuilder();
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for (String validCommands : validCommands){
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exitsInString.append(validCommands).append(" ");
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}
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return exitsInString.toString().trim();
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}
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}
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