summaryrefslogtreecommitdiff
path: root/indra/newview/llpathfindingmanager.cpp
blob: 44dab045837cc41b82972993bef3789957513e3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
/**
 * @file llpathfindingmanager.cpp
 * @author William Todd Stinson
 * @brief A state manager for the various pathfinding states.
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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 "llpathfindingmanager.h"

#include <string>
#include <map>

#include <boost/function.hpp>
#include <boost/signals2.hpp>

#include "llagent.h"
#include "llhttpclient.h"
#include "llhttpnode.h"
#include "llnotificationsutil.h"
#include "llpathfindingcharacterlist.h"
#include "llpathfindinglinkset.h"
#include "llpathfindinglinksetlist.h"
#include "llpathfindingnavmesh.h"
#include "llpathfindingnavmeshstatus.h"
#include "llpathfindingobject.h"
#include "llpathinglib.h"
#include "llsingleton.h"
#include "llsd.h"
#include "lltrans.h"
#include "lluuid.h"
#include "llviewerregion.h"
#include "llweb.h"
#include "llpanelnavmeshrebake.h"
#include "llenvmanager.h"

#define CAP_SERVICE_RETRIEVE_NAVMESH        "RetrieveNavMeshSrc"

#define CAP_SERVICE_NAVMESH_STATUS          "NavMeshGenerationStatus"

#define CAP_SERVICE_OBJECT_LINKSETS         "ObjectNavMeshProperties"
#define CAP_SERVICE_TERRAIN_LINKSETS        "TerrainNavMeshProperties"

#define CAP_SERVICE_CHARACTERS              "CharacterProperties"

#define SIM_MESSAGE_NAVMESH_STATUS_UPDATE   "/message/NavMeshStatusUpdate"
#define SIM_MESSAGE_AGENT_STATE_UPDATE      "/message/AgentStateUpdate"
#define SIM_MESSAGE_BODY_FIELD              "body"

#define CAP_SERVICE_AGENT_STATE             "AgentState"

#define AGENT_STATE_CAN_REBAKE_REGION_FIELD "can_modify_navmesh"

//---------------------------------------------------------------------------
// LLNavMeshSimStateChangeNode
//---------------------------------------------------------------------------

class LLNavMeshSimStateChangeNode : public LLHTTPNode
{
public:
	virtual void post(ResponsePtr pResponse, const LLSD &pContext, const LLSD &pInput) const;
};

LLHTTPRegistration<LLNavMeshSimStateChangeNode> gHTTPRegistrationNavMeshSimStateChangeNode(SIM_MESSAGE_NAVMESH_STATUS_UPDATE);


//---------------------------------------------------------------------------
// LLAgentStateChangeNode
//---------------------------------------------------------------------------
class LLAgentStateChangeNode : public LLHTTPNode
{
public:
	virtual void post(ResponsePtr pResponse, const LLSD &pContext, const LLSD &pInput) const;
};

LLHTTPRegistration<LLAgentStateChangeNode> gHTTPRegistrationAgentStateChangeNode(SIM_MESSAGE_AGENT_STATE_UPDATE);

//---------------------------------------------------------------------------
// NavMeshStatusResponder
//---------------------------------------------------------------------------

class NavMeshStatusResponder : public LLHTTPClient::Responder
{
public:
	NavMeshStatusResponder(const std::string &pCapabilityURL, LLViewerRegion *pRegion, bool pIsGetStatusOnly);
	virtual ~NavMeshStatusResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string& pReason);

protected:

private:
	std::string    mCapabilityURL;
	LLViewerRegion *mRegion;
	LLUUID         mRegionUUID;
	bool           mIsGetStatusOnly;
};

//---------------------------------------------------------------------------
// NavMeshResponder
//---------------------------------------------------------------------------

class NavMeshResponder : public LLHTTPClient::Responder
{
public:
	NavMeshResponder(const std::string &pCapabilityURL, U32 pNavMeshVersion, LLPathfindingNavMeshPtr pNavMeshPtr);
	virtual ~NavMeshResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string& pReason);

protected:

private:
	std::string             mCapabilityURL;
	U32                     mNavMeshVersion;
	LLPathfindingNavMeshPtr mNavMeshPtr;
};

//---------------------------------------------------------------------------
// AgentStateResponder
//---------------------------------------------------------------------------

class AgentStateResponder : public LLHTTPClient::Responder
{
public:
	AgentStateResponder(const std::string &pCapabilityURL);
	virtual ~AgentStateResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string& pReason);

protected:

private:
	std::string mCapabilityURL;
};


//---------------------------------------------------------------------------
// NavMeshRebakeResponder
//---------------------------------------------------------------------------
class NavMeshRebakeResponder : public LLHTTPClient::Responder
{
public:
	NavMeshRebakeResponder(const std::string &pCapabilityURL, LLPathfindingManager::rebake_navmesh_callback_t pRebakeNavMeshCallback);
	virtual ~NavMeshRebakeResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string& pReason);

protected:

private:
	std::string                                     mCapabilityURL;
	LLPathfindingManager::rebake_navmesh_callback_t mRebakeNavMeshCallback;
};

//---------------------------------------------------------------------------
// LinksetsResponder
//---------------------------------------------------------------------------

class LinksetsResponder
{
public:
	LinksetsResponder(LLPathfindingManager::request_id_t pRequestId, LLPathfindingManager::object_request_callback_t pLinksetsCallback, bool pIsObjectRequested, bool pIsTerrainRequested);
	virtual ~LinksetsResponder();

	void handleObjectLinksetsResult(const LLSD &pContent);
	void handleObjectLinksetsError(U32 pStatus, const std::string &pReason, const std::string &pURL);
	void handleTerrainLinksetsResult(const LLSD &pContent);
	void handleTerrainLinksetsError(U32 pStatus, const std::string &pReason, const std::string &pURL);

protected:

private:
	void sendCallback();

	typedef enum
	{
		kNotRequested,
		kWaiting,
		kReceivedGood,
		kReceivedError
	} EMessagingState;

	LLPathfindingManager::request_id_t              mRequestId;
	LLPathfindingManager::object_request_callback_t mLinksetsCallback;

	EMessagingState                                 mObjectMessagingState;
	EMessagingState                                 mTerrainMessagingState;

	LLPathfindingObjectListPtr                      mObjectLinksetListPtr;
	LLPathfindingObjectPtr                          mTerrainLinksetPtr;
};

typedef boost::shared_ptr<LinksetsResponder> LinksetsResponderPtr;

//---------------------------------------------------------------------------
// ObjectLinksetsResponder
//---------------------------------------------------------------------------

class ObjectLinksetsResponder : public LLHTTPClient::Responder
{
public:
	ObjectLinksetsResponder(const std::string &pCapabilityURL, LinksetsResponderPtr pLinksetsResponsderPtr);
	virtual ~ObjectLinksetsResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string &pReason);

protected:

private:
	std::string          mCapabilityURL;
	LinksetsResponderPtr mLinksetsResponsderPtr;
};

//---------------------------------------------------------------------------
// TerrainLinksetsResponder
//---------------------------------------------------------------------------

class TerrainLinksetsResponder : public LLHTTPClient::Responder
{
public:
	TerrainLinksetsResponder(const std::string &pCapabilityURL, LinksetsResponderPtr pLinksetsResponsderPtr);
	virtual ~TerrainLinksetsResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string &pReason);

protected:

private:
	std::string          mCapabilityURL;
	LinksetsResponderPtr mLinksetsResponsderPtr;
};

//---------------------------------------------------------------------------
// CharactersResponder
//---------------------------------------------------------------------------

class CharactersResponder : public LLHTTPClient::Responder
{
public:
	CharactersResponder(const std::string &pCapabilityURL, LLPathfindingManager::request_id_t pRequestId, LLPathfindingManager::object_request_callback_t pCharactersCallback);
	virtual ~CharactersResponder();

	virtual void result(const LLSD &pContent);
	virtual void error(U32 pStatus, const std::string &pReason);

protected:

private:
	std::string                                     mCapabilityURL;
	LLPathfindingManager::request_id_t              mRequestId;
	LLPathfindingManager::object_request_callback_t mCharactersCallback;
};

//---------------------------------------------------------------------------
// LLPathfindingManager
//---------------------------------------------------------------------------

LLPathfindingManager::LLPathfindingManager()
	: LLSingleton<LLPathfindingManager>(),
	mNavMeshMap(),
	mAgentStateSignal()
{
}

LLPathfindingManager::~LLPathfindingManager()
{	
	quitSystem();
}

void LLPathfindingManager::initSystem()
{
	if (LLPathingLib::getInstance() == NULL)
	{
		LLPathingLib::initSystem();
	}
}

void LLPathfindingManager::quitSystem()
{
	if (LLPathingLib::getInstance() != NULL)
	{
		LLPathingLib::quitSystem();
	}
}

bool LLPathfindingManager::isPathfindingEnabledForCurrentRegion() const
{
	return isPathfindingEnabledForRegion(getCurrentRegion());
}

bool LLPathfindingManager::isPathfindingEnabledForRegion(LLViewerRegion *pRegion) const
{
	std::string retrieveNavMeshURL = getRetrieveNavMeshURLForRegion(pRegion);
	return !retrieveNavMeshURL.empty();
}

bool LLPathfindingManager::isAllowViewTerrainProperties() const
{
	LLViewerRegion* region = getCurrentRegion();
	return (gAgent.isGodlike() || ((region != NULL) && region->canManageEstate()));
}

LLPathfindingNavMesh::navmesh_slot_t LLPathfindingManager::registerNavMeshListenerForRegion(LLViewerRegion *pRegion, LLPathfindingNavMesh::navmesh_callback_t pNavMeshCallback)
{
	LLPathfindingNavMeshPtr navMeshPtr = getNavMeshForRegion(pRegion);
	return navMeshPtr->registerNavMeshListener(pNavMeshCallback);
}

void LLPathfindingManager::requestGetNavMeshForRegion(LLViewerRegion *pRegion, bool pIsGetStatusOnly)
{
	LLPathfindingNavMeshPtr navMeshPtr = getNavMeshForRegion(pRegion);

	if (pRegion == NULL)
	{
		navMeshPtr->handleNavMeshNotEnabled();
	}
	else if (!pRegion->capabilitiesReceived())
	{
		navMeshPtr->handleNavMeshWaitForRegionLoad();
		pRegion->setCapabilitiesReceivedCallback(boost::bind(&LLPathfindingManager::handleDeferredGetNavMeshForRegion, this, _1, pIsGetStatusOnly));
	}
	else if (!isPathfindingEnabledForRegion(pRegion))
	{
		navMeshPtr->handleNavMeshNotEnabled();
	}
	else
	{
		std::string navMeshStatusURL = getNavMeshStatusURLForRegion(pRegion);
		llassert(!navMeshStatusURL.empty());
		navMeshPtr->handleNavMeshCheckVersion();
		LLHTTPClient::ResponderPtr navMeshStatusResponder = new NavMeshStatusResponder(navMeshStatusURL, pRegion, pIsGetStatusOnly);
		LLHTTPClient::get(navMeshStatusURL, navMeshStatusResponder);
	}
}

LLPathfindingManager::agent_state_slot_t LLPathfindingManager::registerAgentStateListener(agent_state_callback_t pAgentStateCallback)
{
	return mAgentStateSignal.connect(pAgentStateCallback);
}


void LLPathfindingManager::requestGetLinksets(request_id_t pRequestId, object_request_callback_t pLinksetsCallback) const
{
	LLPathfindingObjectListPtr emptyLinksetListPtr;
	LLViewerRegion *currentRegion = getCurrentRegion();

	if (currentRegion == NULL)
	{
		pLinksetsCallback(pRequestId, kRequestNotEnabled, emptyLinksetListPtr);
	}
	else if (!currentRegion->capabilitiesReceived())
	{
		pLinksetsCallback(pRequestId, kRequestStarted, emptyLinksetListPtr);
		currentRegion->setCapabilitiesReceivedCallback(boost::bind(&LLPathfindingManager::handleDeferredGetLinksetsForRegion, this, _1, pRequestId, pLinksetsCallback));
	}
	else
	{
		std::string objectLinksetsURL = getObjectLinksetsURLForCurrentRegion();
		std::string terrainLinksetsURL = getTerrainLinksetsURLForCurrentRegion();
		if (objectLinksetsURL.empty() || terrainLinksetsURL.empty())
		{
			pLinksetsCallback(pRequestId, kRequestNotEnabled, emptyLinksetListPtr);
		}
		else
		{
			pLinksetsCallback(pRequestId, kRequestStarted, emptyLinksetListPtr);

			bool doRequestTerrain = isAllowViewTerrainProperties();
			LinksetsResponderPtr linksetsResponderPtr(new LinksetsResponder(pRequestId, pLinksetsCallback, true, doRequestTerrain));

			LLHTTPClient::ResponderPtr objectLinksetsResponder = new ObjectLinksetsResponder(objectLinksetsURL, linksetsResponderPtr);
			LLHTTPClient::get(objectLinksetsURL, objectLinksetsResponder);

			if (doRequestTerrain)
			{
				LLHTTPClient::ResponderPtr terrainLinksetsResponder = new TerrainLinksetsResponder(terrainLinksetsURL, linksetsResponderPtr);
				LLHTTPClient::get(terrainLinksetsURL, terrainLinksetsResponder);
			}
		}
	}
}

void LLPathfindingManager::requestSetLinksets(request_id_t pRequestId, const LLPathfindingObjectListPtr &pLinksetListPtr, LLPathfindingLinkset::ELinksetUse pLinksetUse, S32 pA, S32 pB, S32 pC, S32 pD, object_request_callback_t pLinksetsCallback) const
{
	LLPathfindingObjectListPtr emptyLinksetListPtr;

	std::string objectLinksetsURL = getObjectLinksetsURLForCurrentRegion();
	std::string terrainLinksetsURL = getTerrainLinksetsURLForCurrentRegion();
	if (objectLinksetsURL.empty() || terrainLinksetsURL.empty())
	{
		pLinksetsCallback(pRequestId, kRequestNotEnabled, emptyLinksetListPtr);
	}
	else if ((pLinksetListPtr == NULL) || pLinksetListPtr->isEmpty())
	{
		pLinksetsCallback(pRequestId, kRequestCompleted, emptyLinksetListPtr);
	}
	else 
	{
		const LLPathfindingLinksetList *linksetList = dynamic_cast<const LLPathfindingLinksetList *>(pLinksetListPtr.get());

		LLSD objectPostData = linksetList->encodeObjectFields(pLinksetUse, pA, pB, pC, pD);
		LLSD terrainPostData;
		if (isAllowViewTerrainProperties())
		{
			terrainPostData = linksetList->encodeTerrainFields(pLinksetUse, pA, pB, pC, pD);
		}

		if (objectPostData.isUndefined() && terrainPostData.isUndefined())
		{
			pLinksetsCallback(pRequestId, kRequestCompleted, emptyLinksetListPtr);
		}
		else
		{
			pLinksetsCallback(pRequestId, kRequestStarted, emptyLinksetListPtr);

			LinksetsResponderPtr linksetsResponderPtr(new LinksetsResponder(pRequestId, pLinksetsCallback, !objectPostData.isUndefined(), !terrainPostData.isUndefined()));

			if (!objectPostData.isUndefined())
			{
				LLHTTPClient::ResponderPtr objectLinksetsResponder = new ObjectLinksetsResponder(objectLinksetsURL, linksetsResponderPtr);
				LLHTTPClient::put(objectLinksetsURL, objectPostData, objectLinksetsResponder);
			}

			if (!terrainPostData.isUndefined())
			{
				LLHTTPClient::ResponderPtr terrainLinksetsResponder = new TerrainLinksetsResponder(terrainLinksetsURL, linksetsResponderPtr);
				LLHTTPClient::put(terrainLinksetsURL, terrainPostData, terrainLinksetsResponder);
			}
		}
	}
}

void LLPathfindingManager::requestGetCharacters(request_id_t pRequestId, object_request_callback_t pCharactersCallback) const
{
	LLPathfindingObjectListPtr emptyCharacterListPtr;

	LLViewerRegion *currentRegion = getCurrentRegion();

	if (currentRegion == NULL)
	{
		pCharactersCallback(pRequestId, kRequestNotEnabled, emptyCharacterListPtr);
	}
	else if (!currentRegion->capabilitiesReceived())
	{
		pCharactersCallback(pRequestId, kRequestStarted, emptyCharacterListPtr);
		currentRegion->setCapabilitiesReceivedCallback(boost::bind(&LLPathfindingManager::handleDeferredGetCharactersForRegion, this, _1, pRequestId, pCharactersCallback));
	}
	else
	{
		std::string charactersURL = getCharactersURLForCurrentRegion();
		if (charactersURL.empty())
		{
			pCharactersCallback(pRequestId, kRequestNotEnabled, emptyCharacterListPtr);
		}
		else
		{
			pCharactersCallback(pRequestId, kRequestStarted, emptyCharacterListPtr);

			LLHTTPClient::ResponderPtr charactersResponder = new CharactersResponder(charactersURL, pRequestId, pCharactersCallback);
			LLHTTPClient::get(charactersURL, charactersResponder);
		}
	}
}

void LLPathfindingManager::requestGetAgentState()
{
	LLViewerRegion *currentRegion = getCurrentRegion();

	if (currentRegion == NULL)
	{
		mAgentStateSignal(FALSE);
	}
	else
	{
		if (!currentRegion->capabilitiesReceived())
		{
			currentRegion->setCapabilitiesReceivedCallback(boost::bind(&LLPathfindingManager::handleDeferredGetAgentStateForRegion, this, _1));
		}
		else if (!isPathfindingEnabledForRegion(currentRegion))
		{
			mAgentStateSignal(FALSE);
		}
		else
		{
			std::string agentStateURL = getAgentStateURLForRegion(currentRegion);
			llassert(!agentStateURL.empty());
			LLHTTPClient::ResponderPtr responder = new AgentStateResponder(agentStateURL);
			LLHTTPClient::get(agentStateURL, responder);
		}
	}
}

void LLPathfindingManager::requestRebakeNavMesh(rebake_navmesh_callback_t pRebakeNavMeshCallback)
{
	std::string navMeshStatusURL = getNavMeshStatusURLForCurrentRegion();
	llassert(!navMeshStatusURL.empty())
	if (!navMeshStatusURL.empty())
	{
		LLSD mPostData;			
		mPostData["command"] = "rebuild";
		LLHTTPClient::ResponderPtr responder = new NavMeshRebakeResponder(navMeshStatusURL, pRebakeNavMeshCallback);
		LLHTTPClient::post(navMeshStatusURL, mPostData, responder);
	}
}

void LLPathfindingManager::sendRequestGetNavMeshForRegion(LLPathfindingNavMeshPtr navMeshPtr, LLViewerRegion *pRegion, const LLPathfindingNavMeshStatus &pNavMeshStatus)
{
	if ((pRegion == NULL) || !pRegion->isAlive())
	{
		navMeshPtr->handleNavMeshNotEnabled();
	}
	else
	{
		std::string navMeshURL = getRetrieveNavMeshURLForRegion(pRegion);

		if (navMeshURL.empty())
		{
			navMeshPtr->handleNavMeshNotEnabled();
		}
		else
		{
			navMeshPtr->handleNavMeshStart(pNavMeshStatus);
			LLHTTPClient::ResponderPtr responder = new NavMeshResponder(navMeshURL, pNavMeshStatus.getVersion(), navMeshPtr);

			LLSD postData;
			LLHTTPClient::post(navMeshURL, postData, responder);
		}
	}
}

void LLPathfindingManager::handleDeferredGetAgentStateForRegion(const LLUUID &pRegionUUID)
{
	LLViewerRegion *currentRegion = getCurrentRegion();

	if ((currentRegion != NULL) && (currentRegion->getRegionID() == pRegionUUID))
	{
		requestGetAgentState();
	}
}

void LLPathfindingManager::handleDeferredGetNavMeshForRegion(const LLUUID &pRegionUUID, bool pIsGetStatusOnly)
{
	LLViewerRegion *currentRegion = getCurrentRegion();

	if ((currentRegion != NULL) && (currentRegion->getRegionID() == pRegionUUID))
	{
		requestGetNavMeshForRegion(currentRegion, pIsGetStatusOnly);
	}
}

void LLPathfindingManager::handleDeferredGetLinksetsForRegion(const LLUUID &pRegionUUID, request_id_t pRequestId, object_request_callback_t pLinksetsCallback) const
{
	LLViewerRegion *currentRegion = getCurrentRegion();

	if ((currentRegion != NULL) && (currentRegion->getRegionID() == pRegionUUID))
	{
		requestGetLinksets(pRequestId, pLinksetsCallback);
	}
}

void LLPathfindingManager::handleDeferredGetCharactersForRegion(const LLUUID &pRegionUUID, request_id_t pRequestId, object_request_callback_t pCharactersCallback) const
{
	LLViewerRegion *currentRegion = getCurrentRegion();

	if ((currentRegion != NULL) && (currentRegion->getRegionID() == pRegionUUID))
	{
		requestGetCharacters(pRequestId, pCharactersCallback);
	}
}

void LLPathfindingManager::handleNavMeshStatusRequest(const LLPathfindingNavMeshStatus &pNavMeshStatus, LLViewerRegion *pRegion, bool pIsGetStatusOnly)
{
	LLPathfindingNavMeshPtr navMeshPtr = getNavMeshForRegion(pNavMeshStatus.getRegionUUID());

	if (!pNavMeshStatus.isValid())
	{
		navMeshPtr->handleNavMeshError();
	}
	else
	{
		if (navMeshPtr->hasNavMeshVersion(pNavMeshStatus))
		{
			navMeshPtr->handleRefresh(pNavMeshStatus);
		}
		else if (pIsGetStatusOnly)
		{
			navMeshPtr->handleNavMeshNewVersion(pNavMeshStatus);
		}
		else
		{
			sendRequestGetNavMeshForRegion(navMeshPtr, pRegion, pNavMeshStatus);
		}
	}
}

void LLPathfindingManager::handleNavMeshStatusUpdate(const LLPathfindingNavMeshStatus &pNavMeshStatus)
{
	LLPathfindingNavMeshPtr navMeshPtr = getNavMeshForRegion(pNavMeshStatus.getRegionUUID());

	if (!pNavMeshStatus.isValid())
	{
		navMeshPtr->handleNavMeshError();
	}
	else
	{
		navMeshPtr->handleNavMeshNewVersion(pNavMeshStatus);
	}
}

void LLPathfindingManager::handleAgentState(BOOL pCanRebakeRegion) 
{
	mAgentStateSignal(pCanRebakeRegion);
}

LLPathfindingNavMeshPtr LLPathfindingManager::getNavMeshForRegion(const LLUUID &pRegionUUID)
{
	LLPathfindingNavMeshPtr navMeshPtr;
	NavMeshMap::iterator navMeshIter = mNavMeshMap.find(pRegionUUID);
	if (navMeshIter == mNavMeshMap.end())
	{
		navMeshPtr = LLPathfindingNavMeshPtr(new LLPathfindingNavMesh(pRegionUUID));
		mNavMeshMap.insert(std::pair<LLUUID, LLPathfindingNavMeshPtr>(pRegionUUID, navMeshPtr));
	}
	else
	{
		navMeshPtr = navMeshIter->second;
	}

	return navMeshPtr;
}

LLPathfindingNavMeshPtr LLPathfindingManager::getNavMeshForRegion(LLViewerRegion *pRegion)
{
	LLUUID regionUUID;
	if (pRegion != NULL)
	{
		regionUUID = pRegion->getRegionID();
	}

	return getNavMeshForRegion(regionUUID);
}

std::string LLPathfindingManager::getAgentStateURLForRegion(LLViewerRegion *pRegion) const
{
	return getCapabilityURLForRegion(pRegion, CAP_SERVICE_AGENT_STATE);
}

std::string LLPathfindingManager::getNavMeshStatusURLForCurrentRegion() const
{
	return getNavMeshStatusURLForRegion(getCurrentRegion());
}

std::string LLPathfindingManager::getNavMeshStatusURLForRegion(LLViewerRegion *pRegion) const
{
	return getCapabilityURLForRegion(pRegion, CAP_SERVICE_NAVMESH_STATUS);
}

std::string LLPathfindingManager::getRetrieveNavMeshURLForRegion(LLViewerRegion *pRegion) const
{
	return getCapabilityURLForRegion(pRegion, CAP_SERVICE_RETRIEVE_NAVMESH);
}

std::string LLPathfindingManager::getObjectLinksetsURLForCurrentRegion() const
{
	return getCapabilityURLForCurrentRegion(CAP_SERVICE_OBJECT_LINKSETS);
}

std::string LLPathfindingManager::getTerrainLinksetsURLForCurrentRegion() const
{
	return getCapabilityURLForCurrentRegion(CAP_SERVICE_TERRAIN_LINKSETS);
}

std::string LLPathfindingManager::getCharactersURLForCurrentRegion() const
{
	return getCapabilityURLForCurrentRegion(CAP_SERVICE_CHARACTERS);
}

std::string LLPathfindingManager::getCapabilityURLForCurrentRegion(const std::string &pCapabilityName) const
{
	return getCapabilityURLForRegion(getCurrentRegion(), pCapabilityName);
}

std::string LLPathfindingManager::getCapabilityURLForRegion(LLViewerRegion *pRegion, const std::string &pCapabilityName) const
{
	std::string capabilityURL("");

	if (pRegion != NULL)
	{
		capabilityURL = pRegion->getCapability(pCapabilityName);
	}

	if (capabilityURL.empty())
	{
		llwarns << "cannot find capability '" << pCapabilityName << "' for current region '"
			<< ((pRegion != NULL) ? pRegion->getName() : "<null>") << "'" << llendl;
	}

	return capabilityURL;
}

LLViewerRegion *LLPathfindingManager::getCurrentRegion() const
{
	return gAgent.getRegion();
}

//---------------------------------------------------------------------------
// LLNavMeshSimStateChangeNode
//---------------------------------------------------------------------------

void LLNavMeshSimStateChangeNode::post(ResponsePtr pResponse, const LLSD &pContext, const LLSD &pInput) const
{
#ifdef XXX_STINSON_DEBUG_NAVMESH_ZONE
	llinfos << "STINSON DEBUG: Received NavMeshStatusUpdate: " << pInput << llendl;
#endif // XXX_STINSON_DEBUG_NAVMESH_ZONE
	llassert(pInput.has(SIM_MESSAGE_BODY_FIELD));
	llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).isMap());
	LLPathfindingNavMeshStatus navMeshStatus(pInput.get(SIM_MESSAGE_BODY_FIELD));
	LLPathfindingManager::getInstance()->handleNavMeshStatusUpdate(navMeshStatus);
}

//---------------------------------------------------------------------------
// LLAgentStateChangeNode
//---------------------------------------------------------------------------

void LLAgentStateChangeNode::post(ResponsePtr pResponse, const LLSD &pContext, const LLSD &pInput) const
{
	llassert(pInput.has(SIM_MESSAGE_BODY_FIELD));
	llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).isMap());
	llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).has(AGENT_STATE_CAN_REBAKE_REGION_FIELD));
	llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).isBoolean());
	BOOL canRebakeRegion = pInput.get(SIM_MESSAGE_BODY_FIELD).get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).asBoolean();
	
	LLPathfindingManager::getInstance()->handleAgentState(canRebakeRegion);
}

//---------------------------------------------------------------------------
// NavMeshStatusResponder
//---------------------------------------------------------------------------

NavMeshStatusResponder::NavMeshStatusResponder(const std::string &pCapabilityURL, LLViewerRegion *pRegion, bool pIsGetStatusOnly)
	: LLHTTPClient::Responder(),
	mCapabilityURL(pCapabilityURL),
	mRegion(pRegion),
	mRegionUUID(),
	mIsGetStatusOnly(pIsGetStatusOnly)
{
	if (mRegion != NULL)
	{
		mRegionUUID = mRegion->getRegionID();
	}
}

NavMeshStatusResponder::~NavMeshStatusResponder()
{
}

void NavMeshStatusResponder::result(const LLSD &pContent)
{
#ifdef XXX_STINSON_DEBUG_NAVMESH_ZONE
	llinfos << "STINSON DEBUG: Received requested NavMeshStatus: " << pContent << llendl;
#endif // XXX_STINSON_DEBUG_NAVMESH_ZONE
	LLPathfindingNavMeshStatus navMeshStatus(mRegionUUID, pContent);
	LLPathfindingManager::getInstance()->handleNavMeshStatusRequest(navMeshStatus, mRegion, mIsGetStatusOnly);
}

void NavMeshStatusResponder::error(U32 pStatus, const std::string& pReason)
{
	llwarns << "error with request to URL '" << mCapabilityURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;
	LLPathfindingNavMeshStatus navMeshStatus(mRegionUUID);
	LLPathfindingManager::getInstance()->handleNavMeshStatusRequest(navMeshStatus, mRegion, mIsGetStatusOnly);
}

//---------------------------------------------------------------------------
// NavMeshResponder
//---------------------------------------------------------------------------

NavMeshResponder::NavMeshResponder(const std::string &pCapabilityURL, U32 pNavMeshVersion, LLPathfindingNavMeshPtr pNavMeshPtr)
	: LLHTTPClient::Responder(),
	mCapabilityURL(pCapabilityURL),
	mNavMeshVersion(pNavMeshVersion),
	mNavMeshPtr(pNavMeshPtr)
{
}

NavMeshResponder::~NavMeshResponder()
{
}

void NavMeshResponder::result(const LLSD &pContent)
{
	mNavMeshPtr->handleNavMeshResult(pContent, mNavMeshVersion);
}

void NavMeshResponder::error(U32 pStatus, const std::string& pReason)
{
	mNavMeshPtr->handleNavMeshError(pStatus, pReason, mCapabilityURL, mNavMeshVersion);
}

//---------------------------------------------------------------------------
// AgentStateResponder
//---------------------------------------------------------------------------

AgentStateResponder::AgentStateResponder(const std::string &pCapabilityURL)
: LLHTTPClient::Responder()
, mCapabilityURL(pCapabilityURL)
{
}

AgentStateResponder::~AgentStateResponder()
{
}

void AgentStateResponder::result(const LLSD &pContent)
{
	llassert(pContent.has(AGENT_STATE_CAN_REBAKE_REGION_FIELD));
	llassert(pContent.get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).isBoolean());
	BOOL canRebakeRegion = pContent.get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).asBoolean();
	LLPathfindingManager::getInstance()->handleAgentState(canRebakeRegion);
}

void AgentStateResponder::error(U32 pStatus, const std::string &pReason)
{
	llwarns << "error with request to URL '" << mCapabilityURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;
	LLPathfindingManager::getInstance()->handleAgentState(FALSE);
}


//---------------------------------------------------------------------------
// navmesh rebake responder
//---------------------------------------------------------------------------
NavMeshRebakeResponder::NavMeshRebakeResponder(const std::string &pCapabilityURL, LLPathfindingManager::rebake_navmesh_callback_t pRebakeNavMeshCallback)
	: LLHTTPClient::Responder(),
	mCapabilityURL(pCapabilityURL),
	mRebakeNavMeshCallback(pRebakeNavMeshCallback)
{
}

NavMeshRebakeResponder::~NavMeshRebakeResponder()
{
}

void NavMeshRebakeResponder::result(const LLSD &pContent)
{
	mRebakeNavMeshCallback(true);
}

void NavMeshRebakeResponder::error(U32 pStatus, const std::string &pReason)
{
	llwarns << "error with request to URL '" << mCapabilityURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;
	mRebakeNavMeshCallback(false);
}

//---------------------------------------------------------------------------
// LinksetsResponder
//---------------------------------------------------------------------------

LinksetsResponder::LinksetsResponder(LLPathfindingManager::request_id_t pRequestId, LLPathfindingManager::object_request_callback_t pLinksetsCallback, bool pIsObjectRequested, bool pIsTerrainRequested)
	: mRequestId(pRequestId),
	mLinksetsCallback(pLinksetsCallback),
	mObjectMessagingState(pIsObjectRequested ? kWaiting : kNotRequested),
	mTerrainMessagingState(pIsTerrainRequested ? kWaiting : kNotRequested),
	mObjectLinksetListPtr(),
	mTerrainLinksetPtr()
{
}

LinksetsResponder::~LinksetsResponder()
{
}

void LinksetsResponder::handleObjectLinksetsResult(const LLSD &pContent)
{
	mObjectLinksetListPtr = LLPathfindingObjectListPtr(new LLPathfindingLinksetList(pContent));

	mObjectMessagingState = kReceivedGood;
	if (mTerrainMessagingState != kWaiting)
	{
		sendCallback();
	}
}

void LinksetsResponder::handleObjectLinksetsError(U32 pStatus, const std::string &pReason, const std::string &pURL)
{
	llwarns << "error with request to URL '" << pURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;
	mObjectMessagingState = kReceivedError;
	if (mTerrainMessagingState != kWaiting)
	{
		sendCallback();
	}
}

void LinksetsResponder::handleTerrainLinksetsResult(const LLSD &pContent)
{
	mTerrainLinksetPtr = LLPathfindingObjectPtr(new LLPathfindingLinkset(pContent));

	mTerrainMessagingState = kReceivedGood;
	if (mObjectMessagingState != kWaiting)
	{
		sendCallback();
	}
}

void LinksetsResponder::handleTerrainLinksetsError(U32 pStatus, const std::string &pReason, const std::string &pURL)
{
	mTerrainMessagingState = kReceivedError;
	if (mObjectMessagingState != kWaiting)
	{
		sendCallback();
	}
}

void LinksetsResponder::sendCallback()
{
	llassert(mObjectMessagingState != kWaiting);
	llassert(mTerrainMessagingState != kWaiting);
	LLPathfindingManager::ERequestStatus requestStatus =
		((((mObjectMessagingState == kReceivedGood) || (mObjectMessagingState == kNotRequested)) &&
		  ((mTerrainMessagingState == kReceivedGood) || (mTerrainMessagingState == kNotRequested))) ?
		 LLPathfindingManager::kRequestCompleted : LLPathfindingManager::kRequestError);

	if (mObjectMessagingState != kReceivedGood)
	{
		mObjectLinksetListPtr = LLPathfindingObjectListPtr(new LLPathfindingLinksetList());
	}

	if (mTerrainMessagingState == kReceivedGood)
	{
		mObjectLinksetListPtr->update(mTerrainLinksetPtr);
	}

	mLinksetsCallback(mRequestId, requestStatus, mObjectLinksetListPtr);
}

//---------------------------------------------------------------------------
// ObjectLinksetsResponder
//---------------------------------------------------------------------------

ObjectLinksetsResponder::ObjectLinksetsResponder(const std::string &pCapabilityURL, LinksetsResponderPtr pLinksetsResponsderPtr)
	: LLHTTPClient::Responder(),
	mCapabilityURL(pCapabilityURL),
	mLinksetsResponsderPtr(pLinksetsResponsderPtr)
{
}

ObjectLinksetsResponder::~ObjectLinksetsResponder()
{
}

void ObjectLinksetsResponder::result(const LLSD &pContent)
{
	mLinksetsResponsderPtr->handleObjectLinksetsResult(pContent);
}

void ObjectLinksetsResponder::error(U32 pStatus, const std::string &pReason)
{
	mLinksetsResponsderPtr->handleObjectLinksetsError(pStatus, pReason, mCapabilityURL);
}

//---------------------------------------------------------------------------
// TerrainLinksetsResponder
//---------------------------------------------------------------------------

TerrainLinksetsResponder::TerrainLinksetsResponder(const std::string &pCapabilityURL, LinksetsResponderPtr pLinksetsResponsderPtr)
	: LLHTTPClient::Responder(),
	mCapabilityURL(pCapabilityURL),
	mLinksetsResponsderPtr(pLinksetsResponsderPtr)
{
}

TerrainLinksetsResponder::~TerrainLinksetsResponder()
{
}

void TerrainLinksetsResponder::result(const LLSD &pContent)
{
	mLinksetsResponsderPtr->handleTerrainLinksetsResult(pContent);
}

void TerrainLinksetsResponder::error(U32 pStatus, const std::string &pReason)
{
	mLinksetsResponsderPtr->handleTerrainLinksetsError(pStatus, pReason, mCapabilityURL);
}

//---------------------------------------------------------------------------
// CharactersResponder
//---------------------------------------------------------------------------

CharactersResponder::CharactersResponder(const std::string &pCapabilityURL, LLPathfindingManager::request_id_t pRequestId, LLPathfindingManager::object_request_callback_t pCharactersCallback)
	: LLHTTPClient::Responder(),
	mCapabilityURL(pCapabilityURL),
	mRequestId(pRequestId),
	mCharactersCallback(pCharactersCallback)
{
}

CharactersResponder::~CharactersResponder()
{
}

void CharactersResponder::result(const LLSD &pContent)
{
	LLPathfindingObjectListPtr characterListPtr = LLPathfindingObjectListPtr(new LLPathfindingCharacterList(pContent));
	mCharactersCallback(mRequestId, LLPathfindingManager::kRequestCompleted, characterListPtr);
}

void CharactersResponder::error(U32 pStatus, const std::string &pReason)
{
	llwarns << "error with request to URL '" << mCapabilityURL << "' because " << pReason << " (statusCode:" << pStatus << ")" << llendl;

	LLPathfindingObjectListPtr characterListPtr =  LLPathfindingObjectListPtr(new LLPathfindingCharacterList());
	mCharactersCallback(mRequestId, LLPathfindingManager::kRequestError, characterListPtr);
}