From a33e24413ea74aaad91d9eeaa685d1c523c5d210 Mon Sep 17 00:00:00 2001
From: Todd Stinson <stinson@lindenlab.com>
Date: Fri, 2 Mar 2012 19:17:16 -0800
Subject: PATH-304,PATH-205: Initial reworking of the navmesh download
 functionality.

---
 indra/newview/llpathfindingnavmesh.cpp | 133 +++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 indra/newview/llpathfindingnavmesh.cpp

(limited to 'indra/newview/llpathfindingnavmesh.cpp')

diff --git a/indra/newview/llpathfindingnavmesh.cpp b/indra/newview/llpathfindingnavmesh.cpp
new file mode 100644
index 0000000000..fd1a498e3b
--- /dev/null
+++ b/indra/newview/llpathfindingnavmesh.cpp
@@ -0,0 +1,133 @@
+/** 
+ * @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(kNavMeshRequestFormatError);
+			}
+			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(kNavMeshRequestMessageError);
+		}
+	}
+}
+
+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(kNavMeshRequestMessageError);
+	}
+}
+
+void LLPathfindingNavMesh::setRequestStatus(ENavMeshRequestStatus pNavMeshRequestStatus)
+{
+	mNavMeshRequestStatus = pNavMeshRequestStatus;
+	mNavMeshSignal(mNavMeshRequestStatus, mRegionUUID, mNavMeshVersion, mNavMeshData);
+}
-- 
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