Files
vilya/src/java/com/threerings/whirled/server/AbstractSceneMoveHandler.java
T
Michael Bayne cb05d5f56b Factored scene movement out into separate helper classes so that code can be a
bit more cleanly shared and the process of resolving zones and scenes and the
various fiddling done during a scene move can be more easily grokked.


git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@363 c613c5cb-e716-0410-b11b-feb51c14d237
2007-07-17 00:25:18 +00:00

91 lines
3.2 KiB
Java

//
// $Id$
//
// Vilya library - tools for developing networked games
// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
// http://www.threerings.net/code/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.server;
import com.threerings.presents.client.InvocationService;
import com.threerings.presents.data.InvocationMarshaller;
import com.threerings.presents.server.InvocationException;
import com.threerings.crowd.data.BodyObject;
import com.threerings.whirled.client.SceneService;
import com.threerings.whirled.data.SceneCodes;
import com.threerings.whirled.Log;
/**
* Handles the basics of moving a client into a new scene, which may involve resolution. Takes care
* of annoying edge cases like the client logging off before their target scene is resolved and can
* be extended to handle extra fun stuff.
*/
public abstract class AbstractSceneMoveHandler
implements SceneRegistry.ResolutionListener
{
public AbstractSceneMoveHandler (BodyObject body, int sceneId, int version,
InvocationService.InvocationListener listener)
{
_body = body;
_sceneId = sceneId;
_version = version;
_listener = listener;
}
// from interface SceneRegistry.ResolutionListener
public void sceneWasResolved (SceneManager scmgr)
{
// make sure our caller is still around; under heavy load, clients might end their session
// while the scene is resolving
if (!_body.isActive()) {
Log.info("Abandoning scene move, client gone [who=" + _body.who() +
", dest=" + scmgr.where() + "].");
InvocationMarshaller.setNoResponse(_listener);
return;
}
try {
effectSceneMove(scmgr);
} catch (InvocationException sfe) {
_listener.requestFailed(sfe.getMessage());
} catch (RuntimeException re) {
Log.logStackTrace(re);
_listener.requestFailed(SceneCodes.INTERNAL_ERROR);
}
}
// from interface SceneRegistry.ResolutionListener
public void sceneFailedToResolve (int sceneId, Exception reason)
{
Log.warning("Unable to resolve scene [sceneid=" + sceneId + ", reason=" + reason + "].");
_listener.requestFailed(SceneCodes.NO_SUCH_PLACE);
}
protected abstract void effectSceneMove (SceneManager scmgr)
throws InvocationException;
protected BodyObject _body;
protected int _sceneId;
protected int _version;
protected InvocationService.InvocationListener _listener;
}