llviewerparcelmgr.cpp

/** 
 * @file llviewerparcelmgr.cpp
 * @brief Viewer-side representation of owned land
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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 "llviewerparcelmgr.h"

// Library includes
#include "llaudioengine.h"
#include "indra_constants.h"
#include "llcachename.h"
#include "llgl.h"
#include "llnotifications.h"
#include "llnotificationsutil.h"
#include "llparcel.h"
#include "message.h"
#include "llfloaterreg.h"

// Viewer includes
#include "llagent.h"
#include "llagentaccess.h"
#include "llviewerwindow.h"
#include "llviewercontrol.h"
//#include "llfirstuse.h"
#include "llfloaterbuyland.h"
#include "llfloatergroups.h"
#include "llpanelnearbymedia.h"
#include "llfloatersellland.h"
#include "llfloatertools.h"
#include "llparcelselection.h"
#include "llresmgr.h"
#include "llsdutil.h"
#include "llsdutil_math.h"
#include "llslurl.h"
#include "llstatusbar.h"
#include "llui.h"
#include "llviewertexture.h"
#include "llviewertexturelist.h"
#include "llviewermenu.h"
#include "llviewerparcelmedia.h"
#include "llviewerparceloverlay.h"
#include "llviewerregion.h"
#include "llworld.h"
#include "roles_constants.h"
#include "llweb.h"
#include "llvieweraudio.h"

const F32 PARCEL_COLLISION_DRAW_SECS = 1.f;


// Globals

U8* LLViewerParcelMgr::sPackedOverlay = NULL;

LLUUID gCurrentMovieID = LLUUID::null;

LLPointer<LLViewerTexture> sBlockedImage;
LLPointer<LLViewerTexture> sPassImage;

// Local functions
void callback_start_music(S32 option, void* data);
void optionally_prepare_video(const LLParcel *parcelp);
void callback_prepare_video(S32 option, void* data);
void prepare_video(const LLParcel *parcelp);
void start_video(const LLParcel *parcelp);
void stop_video();
bool callback_god_force_owner(const LLSD&, const LLSD&);

struct LLGodForceOwnerData
{
	LLUUID mOwnerID;
	S32 mLocalID;
	LLHost mHost;

	LLGodForceOwnerData(
		const LLUUID& owner_id,
		S32 local_parcel_id,
		const LLHost& host) :
		mOwnerID(owner_id),
		mLocalID(local_parcel_id),
		mHost(host) {}
};

//
// Methods
//
LLViewerParcelMgr::LLViewerParcelMgr()
:	mSelected(FALSE),
	mRequestResult(0),
	mWestSouth(),
	mEastNorth(),
	mSelectedDwell(DWELL_NAN),
	mAgentParcelSequenceID(-1),
	mHoverRequestResult(0),
	mHoverWestSouth(),
	mHoverEastNorth(),
	mTeleportInProgressPosition(),
	mRenderCollision(FALSE),
	mRenderSelection(TRUE),
	mCollisionBanned(0),
	mCollisionTimer(),
	mMediaParcelId(0),
	mMediaRegionId(0)
{
	mCurrentParcel = new LLParcel();
	mCurrentParcelSelection = new LLParcelSelection(mCurrentParcel);
	mFloatingParcelSelection = new LLParcelSelection(mCurrentParcel);

	mAgentParcel = new LLParcel();
	mHoverParcel = new LLParcel();
	mCollisionParcel = new LLParcel();

	mParcelsPerEdge = S32(8192.f / PARCEL_GRID_STEP_METERS); // 8192 is the maximum region size on Aurora
	mHighlightSegments = new U8[(mParcelsPerEdge+1)*(mParcelsPerEdge+1)];
	resetSegments(mHighlightSegments);

	mCollisionSegments = new U8[(mParcelsPerEdge+1)*(mParcelsPerEdge+1)];
	resetSegments(mCollisionSegments);

	// JC: Resolved a merge conflict here, eliminated
	// mBlockedImage->setAddressMode(LLTexUnit::TAM_WRAP);
	// because it is done in llviewertexturelist.cpp
	mBlockedImage = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryLines.png");
	mPassImage = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryPassLines.png");

	S32 overlay_size = mParcelsPerEdge * mParcelsPerEdge / PARCEL_OVERLAY_CHUNKS;
	sPackedOverlay = new U8[overlay_size];

	mAgentParcelOverlay = new U8[mParcelsPerEdge * mParcelsPerEdge];
	S32 i;
	for (i = 0; i < mParcelsPerEdge * mParcelsPerEdge; i++)
	{
		mAgentParcelOverlay[i] = 0;
	}

	mParcelsPerEdge = S32(REGION_WIDTH_METERS / PARCEL_GRID_STEP_METERS);
	mTeleportInProgress = TRUE; // the initial parcel update is treated like teleport
}

void LLViewerParcelMgr::init(F32 region_size)
{
	mParcelsPerEdge = S32(region_size / PARCEL_GRID_STEP_METERS);
}

LLViewerParcelMgr::~LLViewerParcelMgr()
{
	mCurrentParcelSelection->setParcel(NULL);
	mCurrentParcelSelection = NULL;

	mFloatingParcelSelection->setParcel(NULL);
	mFloatingParcelSelection = NULL;

	delete mCurrentParcel;
	mCurrentParcel = NULL;

	delete mAgentParcel;
	mAgentParcel = NULL;

	delete mCollisionParcel;
	mCollisionParcel = NULL;

	delete mHoverParcel;
	mHoverParcel = NULL;

	delete[] mHighlightSegments;
	mHighlightSegments = NULL;

	delete[] mCollisionSegments;
	mCollisionSegments = NULL;

	delete[] sPackedOverlay;
	sPackedOverlay = NULL;

	delete[] mAgentParcelOverlay;
	mAgentParcelOverlay = NULL;

	sBlockedImage = NULL;
	sPassImage = NULL;
}

void LLViewerParcelMgr::dump()
{
	LL_INFOS() << "Parcel Manager Dump" << LL_ENDL;
	LL_INFOS() << "mSelected " << S32(mSelected) << LL_ENDL;
	LL_INFOS() << "Selected parcel: " << LL_ENDL;
	LL_INFOS() << mWestSouth << " to " << mEastNorth << LL_ENDL;
	mCurrentParcel->dump();
	LL_INFOS() << "banning " << mCurrentParcel->mBanList.size() << LL_ENDL;
	
	LLAccessEntry::map::const_iterator cit = mCurrentParcel->mBanList.begin();
	LLAccessEntry::map::const_iterator end = mCurrentParcel->mBanList.end();
	for ( ; cit != end; ++cit)
	{
		LL_INFOS() << "ban id " << (*cit).first << LL_ENDL;
	}
	LL_INFOS() << "Hover parcel:" << LL_ENDL;
	mHoverParcel->dump();
	LL_INFOS() << "Agent parcel:" << LL_ENDL;
	mAgentParcel->dump();
}


LLViewerRegion* LLViewerParcelMgr::getSelectionRegion()
{
	return LLWorld::getInstance()->getRegionFromPosGlobal( mWestSouth );
}


void LLViewerParcelMgr::getDisplayInfo(S32* area_out, S32* claim_out,
									   S32* rent_out,
									   BOOL* for_sale_out,
									   F32* dwell_out)
{
	S32 area = 0;
	S32 price = 0;
	S32 rent = 0;
	BOOL for_sale = FALSE;
	F32 dwell = DWELL_NAN;

	if (mSelected)
	{
		if (mCurrentParcelSelection->mSelectedMultipleOwners)
		{
			area = mCurrentParcelSelection->getClaimableArea();
		}
		else
		{
			area = getSelectedArea();
		}

		if (mCurrentParcel->getForSale())
		{
			price = mCurrentParcel->getSalePrice();
			for_sale = TRUE;
		}
		else
		{
			price = area * mCurrentParcel->getClaimPricePerMeter();
			for_sale = FALSE;
		}

		rent = mCurrentParcel->getTotalRent();

		dwell = mSelectedDwell;
	}

	*area_out = area;
	*claim_out = price;
	*rent_out = rent;
	*for_sale_out = for_sale;
	*dwell_out = dwell;
}

S32 LLViewerParcelMgr::getSelectedArea() const
{
	S32 rv = 0;
	if(mSelected && mCurrentParcel && mCurrentParcelSelection->mWholeParcelSelected)
	{
		rv = mCurrentParcel->getArea();
	}
	else if(mSelected)
	{
		F64 width = mEastNorth.mdV[VX] - mWestSouth.mdV[VX];
		F64 height = mEastNorth.mdV[VY] - mWestSouth.mdV[VY];
		F32 area = (F32)(width * height);
		rv = ll_round(area);
	}
	return rv;
}

void LLViewerParcelMgr::resetSegments(U8* segments)
{
	S32 i;
	S32 count = (mParcelsPerEdge+1)*(mParcelsPerEdge+1);
	for (i = 0; i < count; i++)
	{
		segments[i] = 0x0;
	}
}


void LLViewerParcelMgr::writeHighlightSegments(F32 west, F32 south, F32 east,
											   F32 north)
{
	S32 x, y;
	S32 min_x = ll_round( west / PARCEL_GRID_STEP_METERS );
	S32 max_x = ll_round( east / PARCEL_GRID_STEP_METERS );
	S32 min_y = ll_round( south / PARCEL_GRID_STEP_METERS );
	S32 max_y = ll_round( north / PARCEL_GRID_STEP_METERS );

	const S32 STRIDE = mParcelsPerEdge+1;

	// south edge
	y = min_y;
	for (x = min_x; x < max_x; x++)
	{
		// exclusive OR means that writing to this segment twice
		// will turn it off
		mHighlightSegments[x + y*STRIDE] ^= SOUTH_MASK;
	}

	// west edge
	x = min_x;
	for (y = min_y; y < max_y; y++)
	{
		mHighlightSegments[x + y*STRIDE] ^= WEST_MASK;
	}

	// north edge - draw the south border on the y+1'th cell,
	// which given C-style arrays, is item foo[max_y]
	y = max_y;
	for (x = min_x; x < max_x; x++)
	{
		mHighlightSegments[x + y*STRIDE] ^= SOUTH_MASK;
	}

	// east edge - draw west border on x+1'th cell
	x = max_x;
	for (y = min_y; y < max_y; y++)
	{
		mHighlightSegments[x + y*STRIDE] ^= WEST_MASK;
	}
}


void LLViewerParcelMgr::writeSegmentsFromBitmap(U8* bitmap, U8* segments)
{
	S32 x;
	S32 y;
	const S32 IN_STRIDE = mParcelsPerEdge;
	const S32 OUT_STRIDE = mParcelsPerEdge+1;

	for (y = 0; y < IN_STRIDE; y++)
	{
		x = 0;
		while( x < IN_STRIDE )
		{
			U8 byte = bitmap[ (x + y*IN_STRIDE) / 8 ];

			S32 bit;
			for (bit = 0; bit < 8; bit++)
			{
				if (byte & (1 << bit) )
				{
					S32 out = x+y*OUT_STRIDE;

					// This and one above it
					segments[out]            ^= SOUTH_MASK;
					segments[out+OUT_STRIDE] ^= SOUTH_MASK;

					// This and one to the right
					segments[out]   ^= WEST_MASK;
					segments[out+1] ^= WEST_MASK;
				}
				x++;
			}
		}
	}
}


void LLViewerParcelMgr::writeAgentParcelFromBitmap(U8* bitmap)
{
	S32 x;
	S32 y;
	const S32 IN_STRIDE = mParcelsPerEdge;

	for (y = 0; y < IN_STRIDE; y++)
	{
		x = 0;
		while( x < IN_STRIDE )
		{
			U8 byte = bitmap[ (x + y*IN_STRIDE) / 8 ];

			S32 bit;
			for (bit = 0; bit < 8; bit++)
			{
				if (byte & (1 << bit) )
				{
					mAgentParcelOverlay[x+y*IN_STRIDE] = 1;
				}
				else
				{
					mAgentParcelOverlay[x+y*IN_STRIDE] = 0;
				}
				x++;
			}
		}
	}
}


// Given a point, find the PARCEL_GRID_STEP x PARCEL_GRID_STEP block
// containing it and select that.
LLParcelSelectionHandle LLViewerParcelMgr::selectParcelAt(const LLVector3d& pos_global)
{
	LLVector3d southwest = pos_global;
	LLVector3d northeast = pos_global;

	southwest -= LLVector3d( PARCEL_GRID_STEP_METERS/2, PARCEL_GRID_STEP_METERS/2, 0 );
	southwest.mdV[VX] = ll_round( southwest.mdV[VX], (F64)PARCEL_GRID_STEP_METERS );
	southwest.mdV[VY] = ll_round( southwest.mdV[VY], (F64)PARCEL_GRID_STEP_METERS );

	northeast += LLVector3d( PARCEL_GRID_STEP_METERS/2, PARCEL_GRID_STEP_METERS/2, 0 );
	northeast.mdV[VX] = ll_round( northeast.mdV[VX], (F64)PARCEL_GRID_STEP_METERS );
	northeast.mdV[VY] = ll_round( northeast.mdV[VY], (F64)PARCEL_GRID_STEP_METERS );

	// Snap to parcel
	return selectLand( southwest, northeast, TRUE );
}


// Tries to select the parcel inside the rectangle
LLParcelSelectionHandle LLViewerParcelMgr::selectParcelInRectangle()
{
	return selectLand(mWestSouth, mEastNorth, TRUE);
}


void LLViewerParcelMgr::selectCollisionParcel()
{
	// BUG: Claim to be in the agent's region
	mWestSouth = getSelectionRegion()->getOriginGlobal();
	mEastNorth = mWestSouth;
	mEastNorth += LLVector3d(getSelectionRegion()->getWidth()/REGION_WIDTH_METERS * PARCEL_GRID_STEP_METERS, getSelectionRegion()->getWidth()/REGION_WIDTH_METERS * PARCEL_GRID_STEP_METERS, 0.0);

	// BUG: must be in the sim you are in
	LLMessageSystem *msg = gMessageSystem;
	msg->newMessageFast(_PREHASH_ParcelPropertiesRequestByID);
	msg->nextBlockFast(_PREHASH_AgentID);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID() );
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID() );
	msg->nextBlockFast(_PREHASH_ParcelData);
	msg->addS32Fast(_PREHASH_SequenceID, SELECTED_PARCEL_SEQ_ID );
	msg->addS32Fast(_PREHASH_LocalID, mCollisionParcel->getLocalID() );
	gAgent.sendReliableMessage();

	mRequestResult = PARCEL_RESULT_NO_DATA;

	// Hack: Copy some data over temporarily
	mCurrentParcel->setName( mCollisionParcel->getName() );
	mCurrentParcel->setDesc( mCollisionParcel->getDesc() );
	mCurrentParcel->setPassPrice(mCollisionParcel->getPassPrice());
	mCurrentParcel->setPassHours(mCollisionParcel->getPassHours());

	// clear the list of segments to prevent flashing
	resetSegments(mHighlightSegments);

	mFloatingParcelSelection->setParcel(mCurrentParcel);
	mCurrentParcelSelection->setParcel(NULL);
	mCurrentParcelSelection = new LLParcelSelection(mCurrentParcel);

	mSelected = TRUE;
	mCurrentParcelSelection->mWholeParcelSelected = TRUE;
	notifyObservers();
	return;
}


// snap_selection = auto-select the hit parcel, if there is exactly one
LLParcelSelectionHandle LLViewerParcelMgr::selectLand(const LLVector3d &corner1, const LLVector3d &corner2,
								   BOOL snap_selection)
{
	sanitize_corners( corner1, corner2, mWestSouth, mEastNorth );

	// ...x isn't more than one meter away
	F32 delta_x = getSelectionWidth();
	if (delta_x * delta_x <= 1.f * 1.f)
	{
		mSelected = FALSE;
		notifyObservers();
		return NULL;
	}

	// ...y isn't more than one meter away
	F32 delta_y = getSelectionHeight();
	if (delta_y * delta_y <= 1.f * 1.f)
	{
		mSelected = FALSE;
		notifyObservers();
		return NULL;
	}

	// Can't select across region boundary
	// We need to pull in the upper right corner by a little bit to allow
	// selection up to the x = 256 or y = 256 edge.
	LLVector3d east_north_region_check( mEastNorth );
	east_north_region_check.mdV[VX] -= 0.5;
	east_north_region_check.mdV[VY] -= 0.5;

	LLViewerRegion *region = LLWorld::getInstance()->getRegionFromPosGlobal(mWestSouth);
	LLViewerRegion *region_other = LLWorld::getInstance()->getRegionFromPosGlobal( east_north_region_check );

	if(!region)
	{
		// just in case they somehow selected no land.
		mSelected = FALSE;
		return NULL;
	}

	if (region != region_other)
	{
		LLNotificationsUtil::add("CantSelectLandFromMultipleRegions");
		mSelected = FALSE;
		notifyObservers();
		return NULL;
	}

	// Build region global copies of corners
	LLVector3 wsb_region = region->getPosRegionFromGlobal( mWestSouth );
	LLVector3 ent_region = region->getPosRegionFromGlobal( mEastNorth );

	// Send request message
	LLMessageSystem *msg = gMessageSystem;
	msg->newMessageFast(_PREHASH_ParcelPropertiesRequest);
	msg->nextBlockFast(_PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID() );
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID() );
	msg->nextBlockFast(_PREHASH_ParcelData);
	msg->addS32Fast(_PREHASH_SequenceID, SELECTED_PARCEL_SEQ_ID );
	msg->addF32Fast(_PREHASH_West,  wsb_region.mV[VX] );
	msg->addF32Fast(_PREHASH_South, wsb_region.mV[VY] );
	msg->addF32Fast(_PREHASH_East,  ent_region.mV[VX] );
	msg->addF32Fast(_PREHASH_North, ent_region.mV[VY] );
	msg->addBOOL("SnapSelection", snap_selection);
	msg->sendReliable( region->getHost() );

	mRequestResult = PARCEL_RESULT_NO_DATA;

	mFloatingParcelSelection->setParcel(mCurrentParcel);
	mCurrentParcelSelection->setParcel(NULL);
	mCurrentParcelSelection = new LLParcelSelection(mCurrentParcel);

	mSelected = TRUE;
	mCurrentParcelSelection->mWholeParcelSelected = snap_selection;
	notifyObservers();
	return mCurrentParcelSelection;
}

void LLViewerParcelMgr::deselectUnused()
{
	// no more outstanding references to this selection, other than our own
	if (mCurrentParcelSelection->getNumRefs() == 1 && mFloatingParcelSelection->getNumRefs() == 1)
	{
		deselectLand();
	}
}

void LLViewerParcelMgr::deselectLand()
{
	if (mSelected)
	{
		mSelected = FALSE;

		// Invalidate the selected parcel
		mCurrentParcel->setLocalID(-1);
		mCurrentParcel->mAccessList.clear();
		mCurrentParcel->mBanList.clear();
		//mCurrentParcel->mRenterList.reset();

		mSelectedDwell = DWELL_NAN;

		// invalidate parcel selection so that existing users of this selection can clean up
		mCurrentParcelSelection->setParcel(NULL);
		mFloatingParcelSelection->setParcel(NULL);
		// create new parcel selection
		mCurrentParcelSelection = new LLParcelSelection(mCurrentParcel);

		notifyObservers(); // Notify observers *after* changing the parcel selection
	}
}


void LLViewerParcelMgr::addObserver(LLParcelObserver* observer)
{
	mObservers.push_back(observer);
}


void LLViewerParcelMgr::removeObserver(LLParcelObserver* observer)
{
	vector_replace_with_last(mObservers, observer);
}


// Call this method when it's time to update everyone on a new state.
// Copy the list because an observer could respond by removing itself
// from the list.
void LLViewerParcelMgr::notifyObservers()
{
	std::vector<LLParcelObserver*> observers;
	S32 count = mObservers.size();
	S32 i;
	for(i = 0; i < count; ++i)
	{
		observers.push_back(mObservers.at(i));
	}
	for(i = 0; i < count; ++i)
	{
		observers.at(i)->changed();
	}
}


//
// ACCESSORS
//
BOOL LLViewerParcelMgr::selectionEmpty() const
{
	return !mSelected;
}


LLParcelSelectionHandle LLViewerParcelMgr::getParcelSelection() const
{
	return mCurrentParcelSelection;
}

LLParcelSelectionHandle LLViewerParcelMgr::getFloatingParcelSelection() const
{
	return mFloatingParcelSelection;
}

LLParcel *LLViewerParcelMgr::getAgentParcel() const
{
	return mAgentParcel;
}

// Return whether the agent can build on the land they are on
bool LLViewerParcelMgr::allowAgentBuild() const
{
	if (mAgentParcel)
	{
		return (gAgent.isGodlike() ||
				(mAgentParcel->allowModifyBy(gAgent.getID(), gAgent.getGroupID())) ||
				(isParcelOwnedByAgent(mAgentParcel, GP_LAND_ALLOW_CREATE)));
	}
	else
	{
		return gAgent.isGodlike();
	}
}

// Return whether anyone can build on the given parcel
bool LLViewerParcelMgr::allowAgentBuild(const LLParcel* parcel) const
{
	return parcel->getAllowModify();
}

bool LLViewerParcelMgr::allowAgentVoice() const
{
	return allowAgentVoice(gAgent.getRegion(), mAgentParcel);
}

bool LLViewerParcelMgr::allowAgentVoice(const LLViewerRegion* region, const LLParcel* parcel) const
{
	return region && region->isVoiceEnabled()
		&& parcel	&& parcel->getParcelFlagAllowVoice();
}

bool LLViewerParcelMgr::allowAgentFly(const LLViewerRegion* region, const LLParcel* parcel) const
{
	return region && !region->getBlockFly()
		&& parcel && parcel->getAllowFly();
}

// Can the agent be pushed around by LLPushObject?
bool LLViewerParcelMgr::allowAgentPush(const LLViewerRegion* region, const LLParcel* parcel) const
{
	return region && !region->getRestrictPushObject()
		&& parcel && !parcel->getRestrictPushObject();
}

bool LLViewerParcelMgr::allowAgentScripts(const LLViewerRegion* region, const LLParcel* parcel) const
{
	// *NOTE: This code does not take into account group-owned parcels
	// and the flag to allow group-owned scripted objects to run.
	// This mirrors the traditional menu bar parcel icon code, but is not
	// technically correct.
	return region
		&& !region->getRegionFlag(REGION_FLAGS_SKIP_SCRIPTS)
		&& !region->getRegionFlag(REGION_FLAGS_ESTATE_SKIP_SCRIPTS)
		&& parcel
		&& parcel->getAllowOtherScripts();
}

bool LLViewerParcelMgr::allowAgentDamage(const LLViewerRegion* region, const LLParcel* parcel) const
{
	return (region && region->getAllowDamage())
		|| (parcel && parcel->getAllowDamage());
}

BOOL LLViewerParcelMgr::isOwnedAt(const LLVector3d& pos_global) const
{
	LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
	if (!region) return FALSE;

	LLViewerParcelOverlay* overlay = region->getParcelOverlay();
	if (!overlay) return FALSE;

	LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );

	return overlay->isOwned( pos_region );
}

BOOL LLViewerParcelMgr::isOwnedSelfAt(const LLVector3d& pos_global) const
{
	LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
	if (!region) return FALSE;

	LLViewerParcelOverlay* overlay = region->getParcelOverlay();
	if (!overlay) return FALSE;

	LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );

	return overlay->isOwnedSelf( pos_region );
}

BOOL LLViewerParcelMgr::isOwnedOtherAt(const LLVector3d& pos_global) const
{
	LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
	if (!region) return FALSE;

	LLViewerParcelOverlay* overlay = region->getParcelOverlay();
	if (!overlay) return FALSE;

	LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );

	return overlay->isOwnedOther( pos_region );
}

BOOL LLViewerParcelMgr::isSoundLocal(const LLVector3d& pos_global) const
{
	LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
	if (!region) return FALSE;

	LLViewerParcelOverlay* overlay = region->getParcelOverlay();
	if (!overlay) return FALSE;

	LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );

	return overlay->isSoundLocal( pos_region );
}

BOOL LLViewerParcelMgr::canHearSound(const LLVector3d &pos_global) const
{
	BOOL in_agent_parcel = inAgentParcel(pos_global);

	if (in_agent_parcel)
	{
		// In same parcel as the agent
		return TRUE;
	}
	else
	{
		if (LLViewerParcelMgr::getInstance()->getAgentParcel()->getSoundLocal())
		{
			// Not in same parcel, and agent parcel only has local sound
			return FALSE;
		}
		else if (LLViewerParcelMgr::getInstance()->isSoundLocal(pos_global))
		{
			// Not in same parcel, and target parcel only has local sound
			return FALSE;
		}
		else
		{
			// Not in same parcel, but neither are local sound
			return TRUE;
		}
	}
}


BOOL LLViewerParcelMgr::inAgentParcel(const LLVector3d &pos_global) const
{
	LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal(pos_global);
	LLViewerRegion* agent_region = gAgent.getRegion();
	if (!region || !agent_region)
		return FALSE;

	if (region != agent_region)
	{
		// Can't be in the agent parcel if you're not in the same region.
		return FALSE;
	}

	LLVector3 pos_region = agent_region->getPosRegionFromGlobal(pos_global);
	S32 row =    S32(pos_region.mV[VY] / PARCEL_GRID_STEP_METERS);
	S32 column = S32(pos_region.mV[VX] / PARCEL_GRID_STEP_METERS);

	if (mAgentParcelOverlay[row*mParcelsPerEdge + column])
	{
		return TRUE;
	}
	else
	{
		return FALSE;
	}
}

// Returns NULL when there is no valid data.
LLParcel* LLViewerParcelMgr::getHoverParcel() const
{
	if (mHoverRequestResult == PARCEL_RESULT_SUCCESS)
	{
		return mHoverParcel;
	}
	else
	{
		return NULL;
	}
}

// Returns NULL when there is no valid data.
LLParcel* LLViewerParcelMgr::getCollisionParcel() const
{
	if (mRenderCollision)
	{
		return mCollisionParcel;
	}
	else
	{
		return NULL;
	}
}

//
// UTILITIES
//

void LLViewerParcelMgr::render()
{
	if (mSelected && mRenderSelection && gSavedSettings.getBOOL("RenderParcelSelection"))
	{
		// Rendering is done in agent-coordinates, so need to supply
		// an appropriate offset to the render code.
		LLViewerRegion* regionp = LLWorld::getInstance()->getRegionFromPosGlobal(mWestSouth);
		if (!regionp) return;

		renderHighlightSegments(mHighlightSegments, regionp);
	}
}


void LLViewerParcelMgr::renderParcelCollision()
{
	// check for expiration
	if (mCollisionTimer.getElapsedTimeF32() > PARCEL_COLLISION_DRAW_SECS)
	{
		mRenderCollision = FALSE;
	}

	if (mRenderCollision && gSavedSettings.getBOOL("ShowBanLines"))
	{
		LLViewerRegion* regionp = gAgent.getRegion();
		if (regionp)
		{
			BOOL use_pass = mCollisionParcel->getParcelFlag(PF_USE_PASS_LIST);
			renderCollisionSegments(mCollisionSegments, use_pass, regionp);
		}
	}
}


void LLViewerParcelMgr::sendParcelAccessListRequest(U32 flags)
{
	if (!mSelected)
	{
		return;
	}

	LLViewerRegion *region = LLWorld::getInstance()->getRegionFromPosGlobal( mWestSouth );
	if (!region) return;

	LLMessageSystem *msg = gMessageSystem;


	if (flags & AL_BAN) 
	{
		mCurrentParcel->mBanList.clear();
	}
	if (flags & AL_ACCESS) 
	{
		mCurrentParcel->mAccessList.clear();
	}		
	if (flags & AL_ALLOW_EXPERIENCE) 
	{
		mCurrentParcel->clearExperienceKeysByType(EXPERIENCE_KEY_TYPE_ALLOWED);
	}
	if (flags & AL_BLOCK_EXPERIENCE) 
	{
		mCurrentParcel->clearExperienceKeysByType(EXPERIENCE_KEY_TYPE_BLOCKED);
	}		

	// Only the headers differ
	msg->newMessageFast(_PREHASH_ParcelAccessListRequest);
	msg->nextBlockFast(_PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
	msg->nextBlockFast(_PREHASH_Data);
	msg->addS32Fast(_PREHASH_SequenceID, 0);
	msg->addU32Fast(_PREHASH_Flags, flags);
	msg->addS32("LocalID", mCurrentParcel->getLocalID() );
	msg->sendReliable( region->getHost() );
}


void LLViewerParcelMgr::sendParcelDwellRequest()
{
	if (!mSelected)
	{
		return;
	}

	LLViewerRegion *region = LLWorld::getInstance()->getRegionFromPosGlobal( mWestSouth );
	if (!region) return;

	LLMessageSystem *msg = gMessageSystem;

	// Only the headers differ
	msg->newMessage("ParcelDwellRequest");
	msg->nextBlock("AgentData");
	msg->addUUID("AgentID", gAgent.getID() );
	msg->addUUID("SessionID", gAgent.getSessionID());
	msg->nextBlock("Data");
	msg->addS32("LocalID", mCurrentParcel->getLocalID());
	msg->addUUID("ParcelID", LLUUID::null);	// filled in on simulator
	msg->sendReliable( region->getHost() );
}


void LLViewerParcelMgr::sendParcelGodForceOwner(const LLUUID& owner_id)
{
	if (!mSelected)
	{
		LLNotificationsUtil::add("CannotSetLandOwnerNothingSelected");
		return;
	}

	LL_INFOS() << "Claiming " << mWestSouth << " to " << mEastNorth << LL_ENDL;

	// BUG: Only works for the region containing mWestSouthBottom
	LLVector3d east_north_region_check( mEastNorth );
	east_north_region_check.mdV[VX] -= 0.5;
	east_north_region_check.mdV[VY] -= 0.5;

	LLViewerRegion *region = LLWorld::getInstance()->getRegionFromPosGlobal( mWestSouth );
	if (!region)
	{
		// TODO: Add a force owner version of this alert.
		LLNotificationsUtil::add("CannotContentifyNoRegion");
		return;
	}

	// BUG: Make work for cross-region selections
	LLViewerRegion *region2 = LLWorld::getInstance()->getRegionFromPosGlobal( east_north_region_check );
	if (region != region2)
	{
		LLNotificationsUtil::add("CannotSetLandOwnerMultipleRegions");
		return;
	}

	LL_INFOS() << "Region " << region->getOriginGlobal() << LL_ENDL;

	LLSD payload;
	payload["owner_id"] = owner_id;
	payload["parcel_local_id"] = mCurrentParcel->getLocalID();
	payload["region_host"] = region->getHost().getIPandPort();
	LLNotification::Params params("ForceOwnerAuctionWarning");
	params.payload(payload).functor.function(callback_god_force_owner);

	if(mCurrentParcel->getAuctionID())
	{
		LLNotifications::instance().add(params);
	}
	else