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/**
* @file llpathfindingnavmesh.cpp
* @author William Todd Stinson
* @brief A class for representing the navmesh of a pathfinding region.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* 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;
* version 2.1 of the License only.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "lluuid.h"
#include "llpathfindingnavmesh.h"
#include "llpathfindingnavmeshstatus.h"
#include "llsdserialize.h"
#include <string>
#define NAVMESH_VERSION_FIELD "navmesh_version"
#define NAVMESH_DATA_FIELD "navmesh_data"
//---------------------------------------------------------------------------
// LLPathfindingNavMesh
//---------------------------------------------------------------------------
LLPathfindingNavMesh::LLPathfindingNavMesh(const LLUUID &pRegionUUID)
: mNavMeshStatus(pRegionUUID),
mNavMeshRequestStatus(kNavMeshRequestUnknown),
mNavMeshSignal(),
mNavMeshData()
{
}
LLPathfindingNavMesh::~LLPathfindingNavMesh()
{
}
LLPathfindingNavMesh::navmesh_slot_t LLPathfindingNavMesh::registerNavMeshListener(navmesh_callback_t pNavMeshCallback)
{
return mNavMeshSignal.connect(pNavMeshCallback);
}
bool LLPathfindingNavMesh::hasNavMeshVersion(const LLPathfindingNavMeshStatus &pNavMeshStatus) const
{
return ((mNavMeshStatus.getVersion() == pNavMeshStatus.getVersion()) &&
((mNavMeshRequestStatus == kNavMeshRequestStarted) || (mNavMeshRequestStatus == kNavMeshRequestCompleted) ||
((mNavMeshRequestStatus == kNavMeshRequestChecking) && !mNavMeshData.empty())));
}
void LLPathfindingNavMesh::handleNavMeshWaitForRegionLoad()
{
setRequestStatus(kNavMeshRequestWaiting);
}
void LLPathfindingNavMesh::handleNavMeshCheckVersion()
{
setRequestStatus(kNavMeshRequestChecking);
}
void LLPathfindingNavMesh::handleRefresh(const LLPathfindingNavMeshStatus &pNavMeshStatus)
{
llassert(mNavMeshStatus.getRegionUUID() == pNavMeshStatus.getRegionUUID());
llassert(mNavMeshStatus.getVersion() == pNavMeshStatus.getVersion());
mNavMeshStatus = pNavMeshStatus;
if (mNavMeshRequestStatus == kNavMeshRequestChecking)
{
llassert(!mNavMeshData.empty());
setRequestStatus(kNavMeshRequestCompleted);
}
else
{
sendStatus();
}
}
void LLPathfindingNavMesh::handleNavMeshNewVersion(const LLPathfindingNavMeshStatus &pNavMeshStatus)
{
llassert(mNavMeshStatus.getRegionUUID() == pNavMeshStatus.getRegionUUID());
if (mNavMeshStatus.getVersion() == pNavMeshStatus.getVersion())
{
mNavMeshStatus = pNavMeshStatus;
sendStatus();
}
else
{
mNavMeshData.clear();
mNavMeshStatus = pNavMeshStatus;
setRequestStatus(kNavMeshRequestNeedsUpdate);
}
}
void LLPathfindingNavMesh::handleNavMeshStart(const LLPathfindingNavMeshStatus &pNavMeshStatus)
{
llassert(mNavMeshStatus.getRegionUUID() == pNavMeshStatus.getRegionUUID());
mNavMeshStatus = pNavMeshStatus;
setRequestStatus(kNavMeshRequestStarted);
}
void LLPathfindingNavMesh::handleNavMeshResult(const LLSD &pContent, U32 pNavMeshVersion)
{
if (pContent.has(NAVMESH_VERSION_FIELD))
{
llassert(pContent.get(NAVMESH_VERSION_FIELD).isInteger());
llassert(pContent.get(NAVMESH_VERSION_FIELD).asInteger() >= 0);
U32 embeddedNavMeshVersion = static_cast<U32>(pContent.get(NAVMESH_VERSION_FIELD).asInteger());
llassert(embeddedNavMeshVersion == pNavMeshVersion); // stinson 03/13/2012 : does this ever occur?
if (embeddedNavMeshVersion != pNavMeshVersion)
{
llwarns << "Mismatch between expected and embedded navmesh versions occurred" << llendl;
pNavMeshVersion = embeddedNavMeshVersion;
}
}
if (mNavMeshStatus.getVersion() == pNavMeshVersion)
{
ENavMeshRequestStatus status;
if ( pContent.has(NAVMESH_DATA_FIELD) )
{
const LLSD::Binary &value = pContent.get(NAVMESH_DATA_FIELD).asBinary();
unsigned int binSize = value.size();
std::string newStr(reinterpret_cast<const char *>(&value[0]), binSize);
std::istringstream streamdecomp( newStr );
unsigned int decompBinSize = 0;
bool valid = false;
U8* pUncompressedNavMeshContainer = unzip_llsdNavMesh( valid, decompBinSize, streamdecomp, binSize ) ;
if ( !valid )
{
llwarns << "Unable to decompress the navmesh llsd." << llendl;
status = kNavMeshRequestError;
}
else
{
llassert(pUncompressedNavMeshContainer);
mNavMeshData.resize( decompBinSize );
memcpy( &mNavMeshData[0], &pUncompressedNavMeshContainer[0], decompBinSize );
status = kNavMeshRequestCompleted;
}
if ( pUncompressedNavMeshContainer )
{
free( pUncompressedNavMeshContainer );
}
}
else
{
llwarns << "No mesh data received" << llendl;
status = kNavMeshRequestError;
}
setRequestStatus(status);
}
}
void LLPathfindingNavMesh::handleNavMeshNotEnabled()
{
mNavMeshData.clear();
setRequestStatus(kNavMeshRequestNotEnabled);
}
void LLPathfindingNavMesh::handleNavMeshError()
{
mNavMeshData.clear();
setRequestStatus(kNavMeshRequestError);
}
void LLPathfindingNavMesh::handleNavMeshError(U32 pStatus, const std::string &pReason, const std::string &pURL, U32 pNavMeshVersion)
{
llwarns << "error with request to URL '" << pURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;
if (mNavMeshStatus.getVersion() == pNavMeshVersion)
{
handleNavMeshError();
}
}
void LLPathfindingNavMesh::setRequestStatus(ENavMeshRequestStatus pNavMeshRequestStatus)
{
mNavMeshRequestStatus = pNavMeshRequestStatus;
sendStatus();
}
void LLPathfindingNavMesh::sendStatus()
{
mNavMeshSignal(mNavMeshRequestStatus, mNavMeshStatus, mNavMeshData);
}
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