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/**
* @file llteleporthistory.cpp
* @brief Teleport history
*
* $LicenseInfo:firstyear=2009&license=viewergpl$
*
* Copyright (c) 2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llteleporthistory.h"
#include "llparcel.h"
#include "llsdserialize.h"
#include "llagent.h"
#include "llslurl.h"
#include "llurlsimstring.h"
#include "llviewerparcelmgr.h"
#include "llviewerregion.h"
#include "llworldmap.h"
//////////////////////////////////////////////////////////////////////////////
// LLTeleportHistoryItem
//////////////////////////////////////////////////////////////////////////////
LLTeleportHistoryItem::LLTeleportHistoryItem(const LLSD& val)
{
mTitle = val["title"].asString();
mGlobalPos.setValue(val["global_pos"]);
}
LLSD LLTeleportHistoryItem::toLLSD() const
{
LLSD val;
val["title"] = mTitle;
val["global_pos"] = mGlobalPos.getValue();
return val;
}
//////////////////////////////////////////////////////////////////////////////
// LLTeleportHistory
//////////////////////////////////////////////////////////////////////////////
LLTeleportHistory::LLTeleportHistory():
mCurrentItem(-1),
mRequestedItem(-1),
mGotInitialUpdate(false)
{
mTeleportFinishedConn = LLViewerParcelMgr::getInstance()->
setTeleportFinishedCallback(boost::bind(&LLTeleportHistory::updateCurrentLocation, this));
mTeleportFailedConn = LLViewerParcelMgr::getInstance()->
setTeleportFailedCallback(boost::bind(&LLTeleportHistory::onTeleportFailed, this));
}
LLTeleportHistory::~LLTeleportHistory()
{
mTeleportFinishedConn.disconnect();
mTeleportFailedConn.disconnect();
}
void LLTeleportHistory::goToItem(int idx)
{
// Validate specified index.
if (idx < 0 || idx >= (int)mItems.size())
{
llwarns << "Invalid teleport history index (" << idx << ") specified" << llendl;
dump();
return;
}
if (idx == mCurrentItem)
{
llwarns << "Will not teleport to the same location." << llendl;
dump();
return;
}
// Attempt to teleport to the requested item.
gAgent.teleportViaLocation(mItems[idx].mGlobalPos);
mRequestedItem = idx;
}
void LLTeleportHistory::onTeleportFailed()
{
// Are we trying to teleport within the history?
if (mRequestedItem != -1)
{
// Not anymore.
mRequestedItem = -1;
}
}
void LLTeleportHistory::updateCurrentLocation()
{
if (mRequestedItem != -1) // teleport within the history in progress?
{
mCurrentItem = mRequestedItem;
mRequestedItem = -1;
}
else
{
// If we're getting the initial location update
// while we already have a (loaded) non-empty history,
// there's no need to purge forward items or add a new item.
if (mGotInitialUpdate || mItems.size() == 0)
{
// Purge forward items (if any).
if(mItems.size())
mItems.erase (mItems.begin() + mCurrentItem + 1, mItems.end());
// Append an empty item to the history and make it current.
mItems.push_back(LLTeleportHistoryItem("", LLVector3d()));
mCurrentItem++;
}
// Update current history item.
if (mCurrentItem < 0 || mCurrentItem >= (int) mItems.size()) // sanity check
{
llwarns << "Invalid current item. (this should not happen)" << llendl;
return;
}
mItems[mCurrentItem].mTitle = getCurrentLocationTitle();
mItems[mCurrentItem].mGlobalPos = gAgent.getPositionGlobal();
mItems[mCurrentItem].mRegionID = gAgent.getRegion()->getRegionID();
}
dump();
if (!mGotInitialUpdate)
mGotInitialUpdate = true;
// Signal the interesting party that we've changed.
onHistoryChanged();
}
boost::signals::connection LLTeleportHistory::setHistoryChangedCallback(history_callback_t cb)
{
return mHistoryChangedSignal.connect(cb);
}
void LLTeleportHistory::onHistoryChanged()
{
mHistoryChangedSignal();
}
// static
std::string LLTeleportHistory::getCurrentLocationTitle()
{
std::string location_name;
if (!gAgent.buildLocationString(location_name, LLAgent::LOCATION_FORMAT_NORMAL))
location_name = "Unknown";
return location_name;
}
void LLTeleportHistory::dump() const
{
llinfos << "Teleport history dump (" << mItems.size() << " items):" << llendl;
for (size_t i=0; i<mItems.size(); i++)
{
std::stringstream line;
line << ((i == mCurrentItem) ? " * " : " ");
line << i << ": " << mItems[i].mTitle;
line << " REGION_ID: " << mItems[i].mRegionID;
llinfos << line.str() << llendl;
}
}
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