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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 "llsdserialize.h"
#include <string>
//---------------------------------------------------------------------------
// LLPathfindingNavMesh
//---------------------------------------------------------------------------
LLPathfindingNavMesh::LLPathfindingNavMesh(const LLUUID &pRegionUUID)
: mRegionUUID(pRegionUUID),
mNavMeshRequestStatus(kNavMeshRequestUnknown),
mNavMeshSignal(),
mNavMeshData(),
mNavMeshVersion(0U)
{
}
LLPathfindingNavMesh::~LLPathfindingNavMesh()
{
}
LLPathfindingNavMesh::navmesh_slot_t LLPathfindingNavMesh::registerNavMeshListener(navmesh_callback_t pNavMeshCallback)
{
return mNavMeshSignal.connect(pNavMeshCallback);
}
bool LLPathfindingNavMesh::hasNavMeshVersion(U32 pNavMeshVersion) const
{
return (((mNavMeshRequestStatus == kNavMeshRequestStarted) || (mNavMeshRequestStatus == kNavMeshRequestCompleted)) && (mNavMeshVersion == pNavMeshVersion));
}
void LLPathfindingNavMesh::handleRefresh()
{
mNavMeshSignal(mNavMeshRequestStatus, mRegionUUID, mNavMeshVersion, mNavMeshData);
}
void LLPathfindingNavMesh::handleNavMeshStart(U32 pNavMeshVersion)
{
mNavMeshVersion = pNavMeshVersion;
setRequestStatus(kNavMeshRequestStarted);
}
void LLPathfindingNavMesh::handleNavMeshResult(const LLSD &pContent, U32 pNavMeshVersion)
{
llassert(mNavMeshVersion == pNavMeshVersion);
if (mNavMeshVersion == pNavMeshVersion)
{
if ( pContent.has("navmesh_data") )
{
const LLSD::Binary &value = pContent["navmesh_data"].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;
setRequestStatus(kNavMeshRequestError);
}
else
{
llassert(pUncompressedNavMeshContainer);
mNavMeshData.resize( decompBinSize );
memcpy( &mNavMeshData[0], &pUncompressedNavMeshContainer[0], decompBinSize );
setRequestStatus(kNavMeshRequestCompleted);
}
if ( pUncompressedNavMeshContainer )
{
free( pUncompressedNavMeshContainer );
}
}
else
{
llwarns << "No mesh data received" << llendl;
setRequestStatus(kNavMeshRequestError);
}
}
}
void LLPathfindingNavMesh::handleNavMeshNotEnabled()
{
mNavMeshData.clear();
setRequestStatus(kNavMeshRequestNotEnabled);
}
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;
llassert(mNavMeshVersion == pNavMeshVersion);
mNavMeshData.clear();
if (mNavMeshVersion == pNavMeshVersion)
{
setRequestStatus(kNavMeshRequestError);
}
}
void LLPathfindingNavMesh::setRequestStatus(ENavMeshRequestStatus pNavMeshRequestStatus)
{
mNavMeshRequestStatus = pNavMeshRequestStatus;
mNavMeshSignal(mNavMeshRequestStatus, mRegionUUID, mNavMeshVersion, mNavMeshData);
}
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