UnlockCommand.java

/*-------------------------------------------------------------------------
svninfo: $Id$
Maarten's Mud, WWW-based MUD using MYSQL
Copyright (C) 1998  Maarten van Leunen

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

Maarten van Leunen
Appelhof 27
5345 KA Oss
Nederland
Europe
maarten_l@yahoo.com
-------------------------------------------------------------------------*/
package mmud.commands;

import java.util.Vector;
import java.util.logging.Logger;

import mmud.Constants;
import mmud.MudException;
import mmud.ParseException;
import mmud.characters.Persons;
import mmud.characters.User;
import mmud.items.Container;
import mmud.items.Item;
import mmud.items.ItemException;

/**
 * Unlocks a container with a key: "unlock chest with key". Requirements for it
 * to be successfull:
 * <ul>
 * <li>the container must be in your inventory or in the room
 * <li>the container must be a container
 * <li>the container must be closed
 * <li>the container must be lockable.
 * <li>the container must be locked.
 * <li>the key item must be in your inventory
 * </ul>
 * The possible syntax can range from: "unlock chest with key" to
 * "unlock iron studded wooden chest with old long ornate key".
 */
public class UnlockCommand extends NormalCommand
{
	private String name;
	private String adject1;
	private String adject2;
	private String adject3;

	public UnlockCommand(String aRegExpr)
	{
		super(aRegExpr);
	}

	@Override
	public boolean run(User aUser) throws ItemException, ParseException,
			MudException
	{
		Logger.getLogger("mmud").finer("");
		// initialise string, important otherwise previous instances will return
		// this
		String[] myParsed = getParsedCommand();
		if (myParsed.length > 1)
		{
			// check for in.
			int intopos = 0;
			while (!myParsed[intopos].equalsIgnoreCase("with"))
			{
				intopos++;
			}
			Vector stuff = Constants.parseItemDescription(myParsed,
					intopos + 1, myParsed.length - intopos - 1);
			adject1 = (String) stuff.elementAt(1);
			adject2 = (String) stuff.elementAt(2);
			adject3 = (String) stuff.elementAt(3);
			name = (String) stuff.elementAt(4);

			Vector myItems = aUser.getItems(adject1, adject2, adject3, name);
			if (myItems.size() < 1)
			{
				aUser.writeMessage("You do not have that item.<BR>\r\n");
				return true;
			}
			Item myKey = (Item) myItems.elementAt(0);

			stuff = Constants.parseItemDescription(myParsed, 1, intopos - 1);
			adject1 = (String) stuff.elementAt(1);
			adject2 = (String) stuff.elementAt(2);
			adject3 = (String) stuff.elementAt(3);
			name = (String) stuff.elementAt(4);
			Vector myContainers = aUser.getItems(adject1, adject2, adject3,
					name);
			if (myContainers.size() < 1)
			{
				myContainers = aUser.getRoom().getItems(adject1, adject2,
						adject3, name);
				aUser.getRoom();
				if (myContainers.size() < 1)
				{
					aUser
							.writeMessage("You cannot find that container.<BR>\r\n");
					return true;
				}
			}
			Item aContainer = (Item) myContainers.elementAt(0);
			if (!(aContainer instanceof Container))
			{
				aUser.writeMessage(aContainer.getDescription()
						+ " is not a container.<BR>\r\n");
				return true;
			}

			Container myCon = (Container) aContainer;
			if (!myCon.hasLock())
			{
				aUser.writeMessage(aContainer.getDescription()
						+ " does not have a lock.<BR>\r\n");
				return true;
			}
			if (!myCon.isLocked())
			{
				aUser.writeMessage(aContainer.getDescription()
						+ " is already unlocked.<BR>\r\n");
				return true;
			}
			if (!myCon.getKeyId().equals(myKey.getItemDef()))
			{
				aUser.writeMessage(myKey.getDescription()
						+ " does not fit in the lock of "
						+ aContainer.getDescription() + ".<BR>\r\n");
				return true;
			}
			myCon.setLidsNLocks(myCon.isOpenable(), myCon.isOpen(), myCon
					.getKeyId(), false);
			Persons.sendMessage(aUser, "%SNAME unlock%VERB2 "
					+ aContainer.getDescription() + " with "
					+ myKey.getDescription() + ".<BR>\r\n");
			return true;
		}
		return false;
	}

	public Command createCommand()
	{
		return new UnlockCommand(getRegExpr());
	}

}