/**
 *
 * Class ini mengadakan enumerasi pada semua kata perintah yang dikenal dalam game.
 * Ini digunakan untuk mengenali command saat diketik..
 *
 * @author  M.Rayhan Raffi P.

 * @version 16-11-2020
 */

public class CommandWords

{

    // a constant array that holds all valid command words

    private static final String[] validCommands = {

        "go", "quit", "help"

    };



    /**

     * Constructor - initialise the command words.

     */

    public CommandWords()

    {

        // nothing to do at the moment...

    }



    /**

     * Check whether a given String is a valid command word.

     * @return true if a given string is a valid command,

     * false if it isn't.

     */

    public boolean isCommand(String aString)

    {

        for(int i = 0; i < validCommands.length; i++) {

            if(validCommands[i].equals(aString))

                return true;

        }

        // if we get here, the string was not found in the commands

        return false;

    }

}