/**
 * @file llviewerregion.h
 * @brief Description of the LLViewerRegion class.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

#ifndef LL_LLVIEWERREGION_H
#define LL_LLVIEWERREGION_H

// A ViewerRegion is a class that contains a bunch of objects and surfaces
// that are in to a particular region.
#include <string>
#include <boost/signals2.hpp>

#include "llcorehttputil.h"
#include "llwind.h"
#include "v3dmath.h"
#include "llstring.h"
#include "llregionflags.h"
#include "lluuid.h"
#include "llweb.h"
#include "llcapabilityprovider.h"
#include "m4math.h"                 // LLMatrix4
#include "llframetimer.h"
#include "llreflectionmap.h"

// Surface id's
#define LAND  1
#define WATER 2
const U32   MAX_OBJECT_CACHE_ENTRIES = 50000;

// Region handshake flags
const U32 REGION_HANDSHAKE_SUPPORTS_SELF_APPEARANCE = 1U << 2;

// Interest list mode,
// in use by agent and region classes so must exist before region classes
const std::string IL_MODE_DEFAULT = "default";
const std::string IL_MODE_360 = "360";

class LLEventPoll;
class LLVLComposition;
class LLViewerObject;
class LLMessageSystem;
class LLNetMap;
class LLViewerParcelOverlay;
class LLSurface;
class LLVOCache;
class LLVOCacheEntry;
class LLSpatialPartition;
class LLEventPump;
class LLDataPacker;
class LLDataPackerBinaryBuffer;
class LLHost;
class LLBBox;
class LLSpatialGroup;
class LLDrawable;
class LLGLTFOverrideCacheEntry;
class LLViewerRegionImpl;
class LLViewerOctreeGroup;
class LLVOCachePartition;

class LLViewerRegion: public LLCapabilityProvider // implements this interface
{
public:
    //MUST MATCH THE ORDER OF DECLARATION IN CONSTRUCTOR
    typedef enum
    {
        PARTITION_HUD=0,
        PARTITION_TERRAIN,
        PARTITION_VOIDWATER,
        PARTITION_WATER,
        PARTITION_TREE,
        PARTITION_PARTICLE,
        PARTITION_GRASS,
        PARTITION_VOLUME,
        PARTITION_BRIDGE,
        PARTITION_AVATAR,
        PARTITION_CONTROL_AV, // Animesh
        PARTITION_HUD_PARTICLE,
        PARTITION_VO_CACHE,
        PARTITION_NONE,
        NUM_PARTITIONS
    } eObjectPartitions;

    typedef boost::signals2::signal<void(const LLUUID& region_id, LLViewerRegion* regionp)> caps_received_signal_t;

    LLViewerRegion(const U64 &handle,
                   const LLHost &host,
                   const U32 surface_grid_width,
                   const U32 patch_grid_width,
                   const F32 region_width_meters);
    ~LLViewerRegion();

    // Call this after you have the region name and handle.
    void loadObjectCache();
    void saveObjectCache();

    void sendMessage(); // Send the current message to this region's simulator
    void sendReliableMessage(); // Send the current message to this region's simulator

    void setOriginGlobal(const LLVector3d &origin);
    //void setAgentOffset(const LLVector3d &offset);
    void updateRenderMatrix();

    void setAllowDamage(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_DAMAGE, b); }
    void setAllowLandmark(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_LANDMARK, b); }
    void setAllowSetHome(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_SET_HOME, b); }
    void setResetHomeOnTeleport(bool b) { setRegionFlag(REGION_FLAGS_RESET_HOME_ON_TELEPORT, b); }
    void setSunFixed(bool b) { setRegionFlag(REGION_FLAGS_SUN_FIXED, b); }
    //void setBlockFly(bool b) { setRegionFlag(REGION_FLAGS_BLOCK_FLY, b); }        Never used
    void setAllowDirectTeleport(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_DIRECT_TELEPORT, b); }


    inline bool getAllowDamage()            const;
    inline bool getAllowLandmark()          const;
    inline bool getAllowSetHome()           const;
    inline bool getResetHomeOnTeleport()    const;
    inline bool getSunFixed()               const;
    inline bool getBlockFly()               const;
    inline bool getAllowDirectTeleport()    const;
    inline bool isPrelude()                 const;
    inline bool getAllowTerraform()         const;
    inline bool getRestrictPushObject()     const;
    inline bool getAllowEnvironmentOverride()   const;
    inline bool getReleaseNotesRequested()      const;

    bool isAlive(); // can become false if circuit disconnects

    void setWaterHeight(F32 water_level);
    F32 getWaterHeight() const;

    bool isVoiceEnabled() const;

    void setBillableFactor(F32 billable_factor) { mBillableFactor = billable_factor; }
    F32 getBillableFactor()         const   { return mBillableFactor; }

    // Maximum number of primitives allowed, regardless of object
    // bonus factor.
    U32 getMaxTasks() const { return mMaxTasks; }
    void setMaxTasks(U32 max_tasks) { mMaxTasks = max_tasks; }

    // Draw lines in the dirt showing ownership. Return number of
    // vertices drawn.
    void renderPropertyLines();
    void renderPropertyLinesOnMinimap(F32 scale_pixels_per_meter, const F32* parcel_outline_color);


    // Call this whenever you change the height data in the region.
    // (Automatically called by LLSurfacePatch's update routine)
    void dirtyHeights();

    LLViewerParcelOverlay *getParcelOverlay() const
            { return mParcelOverlay; }

    inline void setRegionFlag(U64 flag, bool on);
    inline bool getRegionFlag(U64 flag) const;
    void setRegionFlags(U64 flags);
    U64 getRegionFlags() const                  { return mRegionFlags; }

    inline void setRegionProtocol(U64 protocol, bool on);
    bool getRegionProtocol(U64 protocol) const;
    void setRegionProtocols(U64 protocols)          { mRegionProtocols = protocols; }
    U64 getRegionProtocols() const                  { return mRegionProtocols; }

    void setTimeDilation(F32 time_dilation);
    F32  getTimeDilation() const                { return mTimeDilation; }

    // Origin height is at zero.
    const LLVector3d &getOriginGlobal() const;
    LLVector3 getOriginAgent() const;

    // Center is at the height of the water table.
    const LLVector3d &getCenterGlobal() const;
    LLVector3 getCenterAgent() const;

    void setRegionNameAndZone(const std::string& name_and_zone);
    const std::string& getName() const              { return mName; }
    const std::string& getZoning() const            { return mZoning; }

    void setOwner(const LLUUID& owner_id);
    const LLUUID& getOwner() const;

    // Is the current agent on the estate manager list for this region?
    void setIsEstateManager(bool b) { mIsEstateManager = b; }
    bool isEstateManager() const { return mIsEstateManager; }
    bool canManageEstate() const;

    void setSimAccess(U8 sim_access)            { mSimAccess = sim_access; }
    U8 getSimAccess() const                     { return mSimAccess; }
    const std::string getSimAccessString() const;

    // Homestead-related getters; there are no setters as nobody should be
    // setting them other than the individual message handler which is a member
    S32 getSimClassID()                    const { return mClassID; }
    S32 getSimCPURatio()                   const { return mCPURatio; }
    const std::string& getSimColoName()    const { return mColoName; }
    const std::string& getSimProductSKU()  const { return mProductSKU; }
    std::string getLocalizedSimProductName() const;

    // Returns "Sandbox", "Expensive", etc.
    static std::string regionFlagsToString(U64 flags);

    // Returns translated version of "Mature", "PG", "Adult", etc.
    static std::string accessToString(U8 sim_access);

    // Returns "M", "PG", "A" etc.
    static std::string accessToShortString(U8 sim_access);
    static U8          shortStringToAccess(const std::string &sim_access);

    // Return access icon name
    static std::string getAccessIcon(U8 sim_access);

    // helper function which just makes sure all interested parties
    // can process the message.
    static void processRegionInfo(LLMessageSystem* msg, void**);

    //check if the viewer camera is static
    static bool isViewerCameraStatic();
    static void calcNewObjectCreationThrottle();

    void setCacheID(const LLUUID& id);

    F32 getWidth() const                        { return mWidth; }

    // regions are expensive to release, this function gradually releases cache from memory
    static void idleCleanup(F32 max_update_time);

    void idleUpdate(F32 max_update_time);
    void lightIdleUpdate();
    bool addVisibleGroup(LLViewerOctreeGroup* group);
    void addVisibleChildCacheEntry(LLVOCacheEntry* parent, LLVOCacheEntry* child);
    void addActiveCacheEntry(LLVOCacheEntry* entry);
    void removeActiveCacheEntry(LLVOCacheEntry* entry, LLDrawable* drawablep);
    void killCacheEntry(U32 local_id); //physically delete the cache entry

    // Like idleUpdate, but forces everything to complete regardless of
    // how long it takes.
    void forceUpdate();

    void connectNeighbor(LLViewerRegion *neighborp, U32 direction);

    void updateNetStats();

    U32 getPacketsLost() const;

    S32 getHttpResponderID() const;

    // Get/set named capability URLs for this region.
    void setSeedCapability(const std::string& url);
    S32 getNumSeedCapRetries();
    void setCapability(const std::string& name, const std::string& url);
    void setCapabilityDebug(const std::string& name, const std::string& url);
    bool isCapabilityAvailable(const std::string& name) const;
    // implements LLCapabilityProvider
    virtual std::string getCapability(const std::string& name) const;
    std::string getCapabilityDebug(const std::string& name) const;


    // has region received its final (not seed) capability list?
    bool capabilitiesReceived() const;
    bool capabilitiesError() const;
    void setCapabilitiesReceived(bool received);
    void setCapabilitiesError();
    boost::signals2::connection setCapabilitiesReceivedCallback(const caps_received_signal_t::slot_type& cb);

    static bool isSpecialCapabilityName(const std::string &name);
    void logActiveCapabilities() const;

    // Utilities to post and get via
    // HTTP using the agent's policy settings and headers.
    typedef LLCoreHttpUtil::HttpCoroutineAdapter::completionCallback_t httpCallback_t;
    bool requestPostCapability(const std::string &capName,
                               LLSD              &postData,
                               httpCallback_t     cbSuccess = NULL,
                               httpCallback_t     cbFailure = NULL);
    bool requestGetCapability(const std::string &capName, httpCallback_t cbSuccess = NULL, httpCallback_t cbFailure = NULL);
    bool requestDelCapability(const std::string &capName, httpCallback_t cbSuccess = NULL, httpCallback_t cbFailure = NULL);

    /// implements LLCapabilityProvider
    /*virtual*/ const LLHost& getHost() const;
    const U64       &getHandle() const          { return mHandle; }

    LLSurface       &getLand() const;

    // set and get the region id
    const LLUUID& getRegionID() const;
    void setRegionID(const LLUUID& region_id);

    bool pointInRegionGlobal(const LLVector3d &point_global) const;
    LLVector3   getPosRegionFromGlobal(const LLVector3d &point_global) const;
    LLVector3   getPosRegionFromAgent(const LLVector3 &agent_pos) const;
    LLVector3   getPosAgentFromRegion(const LLVector3 &region_pos) const;
    LLVector3d  getPosGlobalFromRegion(const LLVector3 &offset) const;

    LLVLComposition *getComposition() const;
    F32 getCompositionXY(const S32 x, const S32 y) const;

    bool isOwnedSelf(const LLVector3& pos);

    // Owned by a group you belong to?  (officer OR member)
    bool isOwnedGroup(const LLVector3& pos);

    // deal with map object updates in the world.
    void updateCoarseLocations(LLMessageSystem* msg);

    F32 getLandHeightRegion(const LLVector3& region_pos);

    U8 getCentralBakeVersion() { return mCentralBakeVersion; }

    void getInfo(LLSD& info);

    bool meshRezEnabled() const;
    bool meshUploadEnabled() const;

    bool bakesOnMeshEnabled() const;

    // has region received its simulator features list? Requires an additional query after caps received.
    void requestSimulatorFeatures();
    void setSimulatorFeaturesReceived(bool);
    bool simulatorFeaturesReceived() const;
    boost::signals2::connection setSimulatorFeaturesReceivedCallback(const caps_received_signal_t::slot_type& cb);

    void getSimulatorFeatures(LLSD& info) const;
    void setSimulatorFeatures(const LLSD& info);


    bool dynamicPathfindingEnabled() const;

    bool avatarHoverHeightEnabled() const;

    typedef enum
    {
        CACHE_MISS_TYPE_TOTAL = 0,  // total cache miss - object not in cache
        CACHE_MISS_TYPE_CRC,        // object in cache, but CRC doesn't match
        CACHE_MISS_TYPE_NONE        // not a miss:  cache hit
    } eCacheMissType;

    typedef enum
    {
        CACHE_UPDATE_DUPE = 0,
        CACHE_UPDATE_CHANGED,
        CACHE_UPDATE_ADDED,
        CACHE_UPDATE_REPLACED
    } eCacheUpdateResult;

    // handle a full update message
    eCacheUpdateResult cacheFullUpdate(LLDataPackerBinaryBuffer &dp, U32 flags);
    eCacheUpdateResult cacheFullUpdate(LLViewerObject* objectp, LLDataPackerBinaryBuffer &dp, U32 flags);

    void cacheFullUpdateGLTFOverride(const LLGLTFOverrideCacheEntry &override_data);

    LLVOCacheEntry* getCacheEntryForOctree(U32 local_id);
    LLVOCacheEntry* getCacheEntry(U32 local_id, bool valid = true);
    bool probeCache(U32 local_id, U32 crc, U32 flags, U8 &cache_miss_type);
    U64 getRegionCacheHitCount() { return mRegionCacheHitCount; }
    U64 getRegionCacheMissCount() { return mRegionCacheMissCount; }
    void requestCacheMisses();
    void addCacheMissFull(const U32 local_id);
    //update object cache if the object receives a full-update or terse update
    LLViewerObject* updateCacheEntry(U32 local_id, LLViewerObject* objectp);
    void findOrphans(U32 parent_id);
    void clearCachedVisibleObjects();
    void dumpCache();

    void unpackRegionHandshake();

    void calculateCenterGlobal();
    void calculateCameraDistance();

    friend std::ostream& operator<<(std::ostream &s, const LLViewerRegion &region);
    /// implements LLCapabilityProvider
    virtual std::string getDescription() const;
    std::string getViewerAssetUrl() const { return mViewerAssetUrl; }

    U32 getNumOfVisibleGroups() const;
    U32 getNumOfActiveCachedObjects() const;
    LLSpatialPartition* getSpatialPartition(U32 type);
    LLVOCachePartition* getVOCachePartition();

    bool objectIsReturnable(const LLVector3& pos, const std::vector<LLBBox>& boxes) const;
    bool childrenObjectReturnable( const std::vector<LLBBox>& boxes ) const;
    bool objectsCrossParcel(const std::vector<LLBBox>& boxes) const;

    void getNeighboringRegions( std::vector<LLViewerRegion*>& uniqueRegions );
    void getNeighboringRegionsStatus( std::vector<S32>& regions );
    const LLViewerRegionImpl * getRegionImpl() const { return mImpl; }
    LLViewerRegionImpl * getRegionImplNC() { return mImpl; }

    // implements the materials capability throttle
    bool materialsCapThrottled() const { return !mMaterialsCapThrottleTimer.hasExpired(); }
    void resetMaterialsCapThrottle();

    U32 getMaxMaterialsPerTransaction() const;

    void removeFromCreatedList(U32 local_id);
    void addToCreatedList(U32 local_id);

    bool isPaused() const {return mPaused;}
    S32  getLastUpdate() const {return mLastUpdate;}

    std::string getSimHostName();

    static bool isNewObjectCreationThrottleDisabled() {return sNewObjectCreationThrottle < 0;}

    // rebuild reflection probe list
    void updateReflectionProbes();

private:
    void addToVOCacheTree(LLVOCacheEntry* entry);
    LLViewerObject* addNewObject(LLVOCacheEntry* entry);
    void killObject(LLVOCacheEntry* entry, std::vector<LLDrawable*>& delete_list); //adds entry into list if it is safe to move into cache
    void removeFromVOCacheTree(LLVOCacheEntry* entry);
    void killCacheEntry(LLVOCacheEntry* entry, bool for_rendering = false); //physically delete the cache entry
    void killInvisibleObjects(F32 max_time);
    void createVisibleObjects(F32 max_time);
    void updateVisibleEntries(F32 max_time); //update visible entries

    void addCacheMiss(U32 id, LLViewerRegion::eCacheMissType miss_type);
    void decodeBoundingInfo(LLVOCacheEntry* entry);
    bool isNonCacheableObjectCreated(U32 local_id);

public:
    void applyCacheMiscExtras(LLViewerObject* obj);

    struct CompareDistance
    {
        bool operator()(const LLViewerRegion* const& lhs, const LLViewerRegion* const& rhs)
        {
            return lhs->mCameraDistanceSquared < rhs->mCameraDistanceSquared;
        }
    };

    void showReleaseNotes();

protected:
    void disconnectAllNeighbors();
    void initStats();

public:
    LLWind  mWind;
    LLViewerParcelOverlay   *mParcelOverlay;

    F32Bits mBitsReceived;
    F32     mPacketsReceived;

    LLMatrix4 mRenderMatrix;

    // These arrays are maintained in parallel. Ideally they'd be combined into a
    // single array of an aggrigate data type but for compatibility with the old
    // messaging system in which the previous message only sends and parses the
    // positions stored in the first array so they're maintained separately until
    // we stop supporting the old CoarseLocationUpdate message.
    std::vector<U32> mMapAvatars;
    std::vector<LLUUID> mMapAvatarIDs;

    static bool sVOCacheCullingEnabled; //vo cache culling enabled or not.
    static S32  sLastCameraUpdated;

    LLFrameTimer &  getRenderInfoRequestTimer() { return mRenderInfoRequestTimer; };
    LLFrameTimer &  getRenderInfoReportTimer()  { return mRenderInfoReportTimer; };

    struct CompareRegionByLastUpdate
    {
        bool operator()(const LLViewerRegion* const& lhs, const LLViewerRegion* const& rhs) const
        {
            S32 lpa = lhs->getLastUpdate();
            S32 rpa = rhs->getLastUpdate();

            //small mLastUpdate first
            if(lpa < rpa)
            {
                return true;
            }
            else if(lpa > rpa)
            {
                return false;
            }
            else
            {
                return lhs < rhs;
            }
        }
    };
    typedef std::set<LLViewerRegion*, CompareRegionByLastUpdate> region_priority_list_t;

    void setInterestListMode(const std::string & new_mode);
    const std::string & getInterestListMode() const { return mInterestListMode; }

    void resetInterestList();

  private:
    static S32  sNewObjectCreationThrottle;
    LLViewerRegionImpl * mImpl;
    LLFrameTimer         mRegionTimer;

    F32         mWidth;         // Width of region on a side (meters)
    U64         mHandle;
    F32         mTimeDilation;  // time dilation of physics simulation on simulator
    S32         mLastUpdate; //last time called idleUpdate()

    // simulator name
    std::string mName;
    std::string mZoning;

    // Is this agent on the estate managers list for this region?
    bool mIsEstateManager;

    U32     mPacketsIn;
    U32Bits mBitsIn,
            mLastBitsIn;
    U32     mLastPacketsIn;
    U32     mPacketsOut;
    U32     mLastPacketsOut;
    S32     mPacketsLost;
    S32     mLastPacketsLost;
    U32Milliseconds     mPingDelay;
    F32     mDeltaTime;             // Time since last measurement of lastPackets, Bits, etc

    U64     mRegionFlags;           // includes damage flags
    U64     mRegionProtocols;       // protocols supported by this region
    U8      mSimAccess;
    F32     mBillableFactor;
    U32     mMaxTasks;              // max prim count
    F32     mCameraDistanceSquared; // updated once per frame
    U8      mCentralBakeVersion;

    LLVOCacheEntry* mLastVisitedEntry;
    U32             mInvisibilityCheckHistory;

    // Information for Homestead / CR-53
    S32 mClassID;
    S32 mCPURatio;

    std::string mColoName;
    std::string mProductSKU;
    std::string mProductName;
    std::string mViewerAssetUrl ;

    // Maps local ids to cache entries.
    // Regions can have order 10,000 objects, so assume
    // a structure of size 2^14 = 16,000
    bool                                    mCacheLoaded;
    bool                                    mCacheDirty;
    bool    mAlive;                 // can become false if circuit disconnects
    bool    mSimulatorFeaturesReceived;
    bool    mReleaseNotesRequested;
    bool    mDead;  //if true, this region is in the process of deleting.
    bool    mPaused; //pause processing the objects in the region

    typedef enum
    {
        CAPABILITIES_STATE_INIT = 0,
        CAPABILITIES_STATE_ERROR,
        CAPABILITIES_STATE_RECEIVED
    } eCababilitiesState;

    eCababilitiesState  mCapabilitiesState;

    typedef std::map<U32, std::vector<U32> > orphan_list_t;
    orphan_list_t mOrphanMap;

    class CacheMissItem
    {
    public:
        CacheMissItem(U32 id, LLViewerRegion::eCacheMissType miss_type) : mID(id), mType(miss_type) {}

        U32                         mID;     //local object id
        LLViewerRegion::eCacheMissType  mType;  // cache miss type

        typedef std::list<CacheMissItem> cache_miss_list_t;
    };
    CacheMissItem::cache_miss_list_t   mCacheMissList;
    U64 mRegionCacheHitCount;
    U64 mRegionCacheMissCount;

    caps_received_signal_t mCapabilitiesReceivedSignal;
    caps_received_signal_t mSimulatorFeaturesReceivedSignal;

    LLSD mSimulatorFeatures;

    typedef std::map<U32, LLPointer<LLVOCacheEntry> >      vocache_entry_map_t;
    static vocache_entry_map_t sRegionCacheCleanup;

    // the materials capability throttle
    LLFrameTimer mMaterialsCapThrottleTimer;
    LLFrameTimer mRenderInfoRequestTimer;
    LLFrameTimer mRenderInfoReportTimer;

    // how the server interest list works
    std::string mInterestListMode;

    // list of reflection maps being managed by this llviewer region
    std::vector<LLPointer<LLReflectionMap> > mReflectionMaps;

};

inline bool LLViewerRegion::getRegionProtocol(U64 protocol) const
{
    return ((mRegionProtocols & protocol) != 0);
}

inline void LLViewerRegion::setRegionProtocol(U64 protocol, bool on)
{
    if (on)
    {
        mRegionProtocols |= protocol;
    }
    else
    {
        mRegionProtocols &= ~protocol;
    }
}

inline bool LLViewerRegion::getRegionFlag(U64 flag) const
{
    return ((mRegionFlags & flag) != 0);
}

inline void LLViewerRegion::setRegionFlag(U64 flag, bool on)
{
    if (on)
    {
        mRegionFlags |= flag;
    }
    else
    {
        mRegionFlags &= ~flag;
    }
}

inline bool LLViewerRegion::getAllowDamage() const
{
    return ((mRegionFlags & REGION_FLAGS_ALLOW_DAMAGE) !=0);
}

inline bool LLViewerRegion::getAllowLandmark() const
{
    return ((mRegionFlags & REGION_FLAGS_ALLOW_LANDMARK) !=0);
}

inline bool LLViewerRegion::getAllowSetHome() const
{
    return ((mRegionFlags & REGION_FLAGS_ALLOW_SET_HOME) != 0);
}

inline bool LLViewerRegion::getResetHomeOnTeleport() const
{
    return ((mRegionFlags & REGION_FLAGS_RESET_HOME_ON_TELEPORT) !=0);
}

inline bool LLViewerRegion::getSunFixed() const
{
    return ((mRegionFlags & REGION_FLAGS_SUN_FIXED) !=0);
}

inline bool LLViewerRegion::getBlockFly() const
{
    return ((mRegionFlags & REGION_FLAGS_BLOCK_FLY) !=0);
}

inline bool LLViewerRegion::getAllowDirectTeleport() const
{
    return ((mRegionFlags & REGION_FLAGS_ALLOW_DIRECT_TELEPORT) !=0);
}

inline bool LLViewerRegion::isPrelude() const
{
    return is_prelude( mRegionFlags );
}

inline bool LLViewerRegion::getAllowTerraform() const
{
    return ((mRegionFlags & REGION_FLAGS_BLOCK_TERRAFORM) == 0);
}

inline bool LLViewerRegion::getRestrictPushObject() const
{
    return ((mRegionFlags & REGION_FLAGS_RESTRICT_PUSHOBJECT) != 0);
}

inline bool LLViewerRegion::getAllowEnvironmentOverride() const
{
    return ((mRegionFlags & REGION_FLAGS_ALLOW_ENVIRONMENT_OVERRIDE) != 0);
}

inline bool LLViewerRegion::getReleaseNotesRequested() const
{
    return mReleaseNotesRequested;
}

#endif