109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
/**
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* @file lllandmark.h
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* @brief Landmark asset class
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*
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* $LicenseInfo:firstyear=2002&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_LLLANDMARK_H
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#define LL_LLLANDMARK_H
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#include <map>
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#include <boost/function.hpp>
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#include "llframetimer.h"
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#include "lluuid.h"
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#include "v3dmath.h"
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class LLMessageSystem;
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class LLHost;
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class LLLandmark
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{
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public:
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// for calling back interested parties when a region handle comes back.
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typedef boost::function<void(const LLUUID& region_id, const U64& region_handle)> region_handle_callback_t;
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~LLLandmark() {}
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// returns true if the position is known.
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bool getGlobalPos(LLVector3d& pos);
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// setter used in conjunction if more information needs to be
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// collected from the server.
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void setGlobalPos(const LLVector3d& pos);
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// return true if the region is known
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bool getRegionID(LLUUID& region_id);
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// return the local coordinates if known
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LLVector3 getRegionPos() const;
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// constructs a new LLLandmark from a string
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// return NULL if there's an error
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static LLLandmark* constructFromString(const char *buffer, const S32 buffer_size);
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// register callbacks that this class handles
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static void registerCallbacks(LLMessageSystem* msg);
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// request information about region_id to region_handle.Pass in a
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// callback pointer which will be erase but NOT deleted after the
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// callback is made. This function may call into the message
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// system to get the information.
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static void requestRegionHandle(
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LLMessageSystem* msg,
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const LLHost& upstream_host,
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const LLUUID& region_id,
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region_handle_callback_t callback);
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// Call this method to create a lookup for this region. This
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// simplifies a lot of the code.
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static void setRegionHandle(const LLUUID& region_id, U64 region_handle);
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private:
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LLLandmark();
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LLLandmark(const LLVector3d& pos);
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static void processRegionIDAndHandle(LLMessageSystem* msg, void**);
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static void expireOldEntries();
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private:
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LLUUID mRegionID;
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LLVector3 mRegionPos;
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bool mGlobalPositionKnown;
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LLVector3d mGlobalPos;
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struct CacheInfo
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{
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U64 mRegionHandle;
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LLFrameTimer mTimer;
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};
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static std::pair<LLUUID, U64> mLocalRegion;
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typedef std::map<LLUUID, CacheInfo> region_map_t;
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static region_map_t mRegions;
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typedef std::multimap<LLUUID, region_handle_callback_t> region_callback_map_t;
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static region_callback_map_t sRegionCallbackMap;
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};
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#endif
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