com.threerings.whirled.zone.util.ZoneUtil Maven / Gradle / Ivy
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//
// $Id$
//
// Vilya library - tools for developing networked games
// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
// http://code.google.com/p/vilya/
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package com.threerings.whirled.zone.util;
/**
* Server-specific, zone-related utility functions.
*/
public class ZoneUtil
{
/**
* Composes the zone type and zone id into a qualified zone id. A
* qualified zone id is what should be passed around so that the
* server can determine the zone type from the zone id when necessary.
*/
public static int qualifyZoneId (byte zoneType, int zoneId)
{
int qualifiedZoneId = zoneType;
qualifiedZoneId <<= 24;
qualifiedZoneId |= zoneId;
return qualifiedZoneId;
}
/**
* Extracts the zone type from a qualified zone id.
*/
public static int zoneType (int qualifiedZoneId)
{
return (0xFF000000 & qualifiedZoneId) >> 24;
}
/**
* Extracts the zone id from a qualified zone id.
*/
public static int zoneId (int qualifiedZoneId)
{
return (0x00FFFFFF & qualifiedZoneId);
}
/**
* Returns an easier to read representation of the supplied qualified
* zone id: type:id.
*/
public static String toString (int qualifiedZoneId)
{
return zoneType(qualifiedZoneId) + ":" + zoneId(qualifiedZoneId);
}
}