aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/Framework/Scenes/ScenePresence.cs
blob: 5f2a6b14d67dfbda483004b6f77a27779a9f2bdb (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
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the OpenSimulator Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Xml;
using System.Collections.Generic;
using System.Reflection;
using System.Timers;
using OpenMetaverse;
using log4net;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Framework.Client;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes.Animation;
using OpenSim.Region.Framework.Scenes.Types;
using OpenSim.Region.Physics.Manager;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
using OpenSim.Services.Interfaces;
using TeleportFlags = OpenSim.Framework.Constants.TeleportFlags;

namespace OpenSim.Region.Framework.Scenes
{
    [Flags]
    enum ScriptControlled : uint
    {
        CONTROL_ZERO = 0,
        CONTROL_FWD = 1,
        CONTROL_BACK = 2,
        CONTROL_LEFT = 4,
        CONTROL_RIGHT = 8,
        CONTROL_UP = 16,
        CONTROL_DOWN = 32,
        CONTROL_ROT_LEFT = 256,
        CONTROL_ROT_RIGHT = 512,
        CONTROL_LBUTTON = 268435456,
        CONTROL_ML_LBUTTON = 1073741824
    }

    struct ScriptControllers
    {
        public UUID itemID;
        public ScriptControlled ignoreControls;
        public ScriptControlled eventControls;
    }

    public delegate void SendCoarseLocationsMethod(UUID scene, ScenePresence presence, List<Vector3> coarseLocations, List<UUID> avatarUUIDs);

    public class ScenePresence : EntityBase, IScenePresence
    {
//        ~ScenePresence()
//        {
//            m_log.DebugFormat("[SCENE PRESENCE]: Destructor called on {0}", Name);
//        }

        private void TriggerScenePresenceUpdated()
        {
            if (m_scene != null)
                m_scene.EventManager.TriggerScenePresenceUpdated(this);
        }

        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public PresenceType PresenceType { get; private set; }

//        private static readonly byte[] DEFAULT_TEXTURE = AvatarAppearance.GetDefaultTexture().GetBytes();
        private static readonly Array DIR_CONTROL_FLAGS = Enum.GetValues(typeof(Dir_ControlFlags));
        private static readonly Vector3 HEAD_ADJUSTMENT = new Vector3(0f, 0f, 0.3f);
        
        /// <summary>
        /// Experimentally determined "fudge factor" to make sit-target positions
        /// the same as in SecondLife. Fudge factor was tested for 36 different
        /// test cases including prims of type box, sphere, cylinder, and torus,
        /// with varying parameters for sit target location, prim size, prim
        /// rotation, prim cut, prim twist, prim taper, and prim shear. See mantis
        /// issue #1716
        /// </summary>
        public static readonly Vector3 SIT_TARGET_ADJUSTMENT = new Vector3(0.0f, 0.0f, 0.418f);

        /// <summary>
        /// Movement updates for agents in neighboring regions are sent directly to clients.
        /// This value only affects how often agent positions are sent to neighbor regions
        /// for things such as distance-based update prioritization
        /// </summary>
        public static readonly float SIGNIFICANT_MOVEMENT = 2.0f;

        public UUID currentParcelUUID = UUID.Zero;

        /// <value>
        /// The animator for this avatar
        /// </value>
        public ScenePresenceAnimator Animator { get; private set; }

        /// <summary>
        /// Attachments recorded on this avatar.
        /// </summary>
        /// <remarks>
        /// TODO: For some reason, we effectively have a list both here and in Appearance.  Need to work out if this is
        /// necessary.
        /// </remarks>
        private List<SceneObjectGroup> m_attachments = new List<SceneObjectGroup>();

        public Object AttachmentsSyncLock { get; private set; }

        private Dictionary<UUID, ScriptControllers> scriptedcontrols = new Dictionary<UUID, ScriptControllers>();
        private ScriptControlled IgnoredControls = ScriptControlled.CONTROL_ZERO;
        private ScriptControlled LastCommands = ScriptControlled.CONTROL_ZERO;
        private bool MouseDown = false;
//        private SceneObjectGroup proxyObjectGroup;
        //private SceneObjectPart proxyObjectPart = null;
        public Vector3 lastKnownAllowedPosition;
        public bool sentMessageAboutRestrictedParcelFlyingDown;
        public Vector4 CollisionPlane = Vector4.UnitW;

        private Vector3 m_lastPosition;
        private Quaternion m_lastRotation;
        private Vector3 m_lastVelocity;

        private Vector3? m_forceToApply;
        private int m_userFlags;
        public int UserFlags
        {
            get { return m_userFlags; }
        }

        // Flying
        public bool Flying
        {
            get { return PhysicsActor != null && PhysicsActor.Flying; }
            set { PhysicsActor.Flying = value; }
        }

        // add for fly velocity control
        private bool FlyingOld {get; set;}
        public bool WasFlying
        {
            get; private set;
        }

        public bool IsColliding
        {
            get { return PhysicsActor != null && PhysicsActor.IsColliding; }
            // We would expect setting IsColliding to be private but it's used by a hack in Scene
            set { PhysicsActor.IsColliding = value; }
        }

//        private int m_lastColCount = -1;		//KF: Look for Collision chnages
//        private int m_updateCount = 0;			//KF: Update Anims for a while
//        private static readonly int UPDATE_COUNT = 10;		// how many frames to update for

        private TeleportFlags m_teleportFlags;
        public TeleportFlags TeleportFlags
        {
            get { return m_teleportFlags; }
            set { m_teleportFlags = value; }
        }

        private uint m_requestedSitTargetID;
        private UUID m_requestedSitTargetUUID;

        /// <summary>
        /// Are we sitting on the ground?
        /// </summary>
        public bool SitGround { get; private set; }

        private SendCoarseLocationsMethod m_sendCoarseLocationsMethod;

        //private Vector3 m_requestedSitOffset = new Vector3();

        private Vector3 m_LastFinitePos;

        private float m_sitAvatarHeight = 2.0f;

        private Vector3 m_lastChildAgentUpdatePosition;
        private Vector3 m_lastChildAgentUpdateCamPosition;

        private const int LAND_VELOCITYMAG_MAX = 12;

        private float m_health = 100f;

        protected ulong crossingFromRegion;

        private readonly Vector3[] Dir_Vectors = new Vector3[11];

        protected Timer m_reprioritization_timer;
        protected bool m_reprioritizing;
        protected bool m_reprioritization_called;

        private Quaternion m_headrotation = Quaternion.Identity;

        private string m_nextSitAnimation = String.Empty;

        //PauPaw:Proper PID Controler for autopilot************
        public bool MovingToTarget { get; private set; }
        public Vector3 MoveToPositionTarget { get; private set; }

        /// <summary>
        /// Controls whether an avatar automatically moving to a target will land when it gets there (if flying).
        /// </summary>
        public bool LandAtTarget { get; private set; }

        private bool m_followCamAuto;

        private int m_movementUpdateCount;
        private const int NumMovementsBetweenRayCast = 5;

        private bool CameraConstraintActive;
        //private int m_moveToPositionStateStatus;
        //*****************************************************

        protected AvatarAppearance m_appearance;

        public AvatarAppearance Appearance
        {
            get { return m_appearance; }
            set
            {
                m_appearance = value;
//                m_log.DebugFormat("[SCENE PRESENCE]: Set appearance for {0} to {1}", Name, value);
            }
        }

        /// <summary>
        /// Copy of the script states while the agent is in transit. This state may
        /// need to be placed back in case of transfer fail.
        /// </summary>
        public List<string> InTransitScriptStates
        {
            get { return m_InTransitScriptStates; }
            private set { m_InTransitScriptStates = value; }
        }
        private List<string> m_InTransitScriptStates = new List<string>();

        /// <summary>
        /// Implemented Control Flags
        /// </summary>
        private enum Dir_ControlFlags
        {
            DIR_CONTROL_FLAG_FORWARD = AgentManager.ControlFlags.AGENT_CONTROL_AT_POS,
            DIR_CONTROL_FLAG_BACK = AgentManager.ControlFlags.AGENT_CONTROL_AT_NEG,
            DIR_CONTROL_FLAG_LEFT = AgentManager.ControlFlags.AGENT_CONTROL_LEFT_POS,
            DIR_CONTROL_FLAG_RIGHT = AgentManager.ControlFlags.AGENT_CONTROL_LEFT_NEG,
            DIR_CONTROL_FLAG_UP = AgentManager.ControlFlags.AGENT_CONTROL_UP_POS,
            DIR_CONTROL_FLAG_DOWN = AgentManager.ControlFlags.AGENT_CONTROL_UP_NEG,
            DIR_CONTROL_FLAG_FORWARD_NUDGE = AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_AT_POS,
            DIR_CONTROL_FLAG_BACKWARD_NUDGE = AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_AT_NEG,
            DIR_CONTROL_FLAG_LEFT_NUDGE = AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_LEFT_POS,
            DIR_CONTROL_FLAG_RIGHT_NUDGE = AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_LEFT_NEG,
            DIR_CONTROL_FLAG_DOWN_NUDGE = AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_NEG
        }
        
        /// <summary>
        /// Position at which a significant movement was made
        /// </summary>
        private Vector3 posLastSignificantMove;

        // For teleports and crossings callbacks
        string m_callbackURI;
        UUID m_originRegionID;

        /// <value>
        /// Script engines present in the scene
        /// </value>
        private IScriptModule[] m_scriptEngines;

        #region Properties

        /// <summary>
        /// Physical scene representation of this Avatar.
        /// </summary>
        public PhysicsActor PhysicsActor { get; private set; }

        /// <summary>
        /// Record user movement inputs.
        /// </summary>
        public byte MovementFlag { get; private set; }

        private bool m_updateflag;

        public bool Updated
        {
            set { m_updateflag = value; }
            get { return m_updateflag; }
        }

        private bool m_invulnerable = true;

        public bool Invulnerable
        {
            set { m_invulnerable = value; }
            get { return m_invulnerable; }
        }

        private int m_userLevel;

        public int UserLevel
        {
            get { return m_userLevel; }
            private set { m_userLevel = value; }
        }

        private int m_godLevel;

        public int GodLevel
        {
            get { return m_godLevel; }
            private set { m_godLevel = value; }
        }

        private ulong m_rootRegionHandle;

        public ulong RegionHandle
        {
            get { return m_rootRegionHandle; }
            private set { m_rootRegionHandle = value; }
        }

        #region Client Camera

        /// <summary>
        /// Position of agent's camera in world (region cordinates)
        /// </summary>
        protected Vector3 m_lastCameraPosition;

        public Vector3 CameraPosition { get; set; }

        public Quaternion CameraRotation
        {
            get { return Util.Axes2Rot(CameraAtAxis, CameraLeftAxis, CameraUpAxis); }
        }

        // Use these three vectors to figure out what the agent is looking at
        // Convert it to a Matrix and/or Quaternion
        //
        public Vector3 CameraAtAxis { get; set; }
        public Vector3 CameraLeftAxis { get; set; }
        public Vector3 CameraUpAxis { get; set; }

        public Vector3 Lookat
        {
            get
            {
                Vector3 a = new Vector3(CameraAtAxis.X, CameraAtAxis.Y, 0);

                if (a == Vector3.Zero)
                    return a;

                return Util.GetNormalizedVector(a);
            }
        }
        #endregion        

        public string Firstname { get; private set; }
        public string Lastname { get; private set; }

        public string Grouptitle { get; set; }

        // Agent's Draw distance.
        public float DrawDistance { get; set; }

        public bool AllowMovement { get; set; }

        private bool m_setAlwaysRun;
        
        public bool SetAlwaysRun
        {
            get
            {
                if (PhysicsActor != null)
                {
                    return PhysicsActor.SetAlwaysRun;
                }
                else
                {
                    return m_setAlwaysRun;
                }
            }
            set
            {
                m_setAlwaysRun = value;
                if (PhysicsActor != null)
                {
                    PhysicsActor.SetAlwaysRun = value;
                }
            }
        }

        public byte State { get; set; }

        private AgentManager.ControlFlags m_AgentControlFlags;

        public uint AgentControlFlags
        {
            get { return (uint)m_AgentControlFlags; }
            set { m_AgentControlFlags = (AgentManager.ControlFlags)value; }
        }

        public IClientAPI ControllingClient { get; set; }

        public IClientCore ClientView
        {
            get { return (IClientCore)ControllingClient; }
        }

        public Vector3 ParentPosition { get; set; }

        /// <summary>
        /// Position of this avatar relative to the region the avatar is in
        /// </summary>
        public override Vector3 AbsolutePosition
        {
            get
            {
                if (PhysicsActor != null)
                {
                    m_pos = PhysicsActor.Position;

                    //m_log.DebugFormat(
                    //    "[SCENE PRESENCE]: Set position {0} for {1} in {2} via getting AbsolutePosition!",
                    //    m_pos, Name, Scene.RegionInfo.RegionName);
                }
                else
                {
                    // Obtain the correct position of a seated avatar.
                    // In addition to providing the correct position while
                    // the avatar is seated, this value will also
                    // be used as the location to unsit to.
                    //
                    // If ParentID is not 0, assume we are a seated avatar
                    // and we should return the position based on the sittarget
                    // offset and rotation of the prim we are seated on.
                    //
                    // Generally, m_pos will contain the position of the avatar
                    // in the sim unless the avatar is on a sit target. While
                    // on a sit target, m_pos will contain the desired offset
                    // without the parent rotation applied.
                    SceneObjectPart sitPart = ParentPart;

                    if (sitPart != null)
                        return sitPart.AbsolutePosition + (m_pos * sitPart.GetWorldRotation());
                }
                
                return m_pos;
            }
            set
            {
                if (PhysicsActor != null)
                {
                    try
                    {
                        PhysicsActor.Position = value;
                    }
                    catch (Exception e)
                    {
                        m_log.Error("[SCENE PRESENCE]: ABSOLUTE POSITION " + e.Message);
                    }
                }

                // Don't update while sitting.  The PhysicsActor above is null whilst sitting.
                if (ParentID == 0)
                {
                    m_pos = value;
                    ParentPosition = Vector3.Zero;
                }

                //m_log.DebugFormat(
                //    "[ENTITY BASE]: In {0} set AbsolutePosition of {1} to {2}",
                //    Scene.RegionInfo.RegionName, Name, m_pos);
                TriggerScenePresenceUpdated();
            }
        }

        /// <summary>
        /// If sitting, returns the offset position from the prim the avatar is sitting on.
        /// Otherwise, returns absolute position in the scene.
        /// </summary>
        public Vector3 OffsetPosition
        {
            get { return m_pos; }
            // Don't remove setter. It's not currently used in core but
            // upcoming Avination code needs it.
            set
            {
                // There is no offset position when not seated
                if (ParentID == 0)
                    return;

                m_pos = value;
                TriggerScenePresenceUpdated();
            }
        }

        /// <summary>
        /// Current velocity of the avatar.
        /// </summary>
        public override Vector3 Velocity
        {
            get
            {
                if (PhysicsActor != null)
                {
                    m_velocity = PhysicsActor.TargetVelocity;

//                    m_log.DebugFormat(
//                        "[SCENE PRESENCE]: Set velocity {0} for {1} in {2} via getting Velocity!",
//                        m_velocity, Name, Scene.RegionInfo.RegionName);
                }

                return m_velocity;
            }
            set
            {
                if (PhysicsActor != null)
                {
                    try
                    {
                        PhysicsActor.Velocity = value;
                    }
                    catch (Exception e)
                    {
                        m_log.Error("[SCENE PRESENCE]: VELOCITY " + e.Message);
                    }
                }

                m_velocity = value;

//                m_log.DebugFormat(
//                    "[SCENE PRESENCE]: In {0} set velocity of {1} to {2}",
//                    Scene.RegionInfo.RegionName, Name, m_velocity);
            }
        }

        private Quaternion m_bodyRot = Quaternion.Identity;

        public Quaternion Rotation
        {
            get { return m_bodyRot; }
            set
            {
                m_bodyRot = value;
//                m_log.DebugFormat("[SCENE PRESENCE]: Body rot for {0} set to {1}", Name, m_bodyRot);
            }
        }

        public bool IsChildAgent { get; set; }

        /// <summary>
        /// If the avatar is sitting, the local ID of the prim that it's sitting on.  If not sitting then zero.
        /// </summary>
        public uint ParentID { get; set; }

        /// <summary>
        /// Are we sitting on an object?
        /// </summary>
        /// <remarks>A more readable way of testing presence sit status than ParentID == 0</remarks>
        public bool IsSatOnObject { get { return ParentID != 0; } }

        /// <summary>
        /// If the avatar is sitting, the prim that it's sitting on.  If not sitting then null.
        /// </summary>
        /// <remarks>
        /// If you use this property then you must take a reference since another thread could set it to null.
        /// </remarks>
        public SceneObjectPart ParentPart { get; set; }

        public float Health
        {
            get { return m_health; }
            set { m_health = value; }
        }

        public void AdjustKnownSeeds()
        {
            Dictionary<ulong, string> seeds;

            if (Scene.CapsModule != null)
                seeds = Scene.CapsModule.GetChildrenSeeds(UUID);
            else
                seeds = new Dictionary<ulong, string>();

            List<ulong> old = new List<ulong>();
            foreach (ulong handle in seeds.Keys)
            {
                uint x, y;
                Utils.LongToUInts(handle, out x, out y);
                x = x / Constants.RegionSize;
                y = y / Constants.RegionSize;
                if (Util.IsOutsideView(DrawDistance, x, Scene.RegionInfo.RegionLocX, y, Scene.RegionInfo.RegionLocY))
                {
                    old.Add(handle);
                }
            }
            DropOldNeighbours(old);
            
            if (Scene.CapsModule != null)
                Scene.CapsModule.SetChildrenSeed(UUID, seeds);
            
            KnownRegions = seeds;
            //m_log.Debug(" ++++++++++AFTER+++++++++++++ ");
            //DumpKnownRegions();
        }

        public void DumpKnownRegions()
        {
            m_log.Info("================ KnownRegions "+Scene.RegionInfo.RegionName+" ================");
            foreach (KeyValuePair<ulong, string> kvp in KnownRegions)
            {
                uint x, y;
                Utils.LongToUInts(kvp.Key, out x, out y);
                x = x / Constants.RegionSize;
                y = y / Constants.RegionSize;
                m_log.Info(" >> "+x+", "+y+": "+kvp.Value);
            }
        }

        private bool m_mouseLook;
        private bool m_leftButtonDown;

        private bool m_inTransit;

        public bool IsInTransit
        {
            get { return m_inTransit; }
            set { 
                if(value)
                {
                    if (Flying)
                        m_AgentControlFlags |= AgentManager.ControlFlags.AGENT_CONTROL_FLY;
                    else
                        m_AgentControlFlags &= ~AgentManager.ControlFlags.AGENT_CONTROL_FLY;
                }
                m_inTransit = value;
            }
        }

        private float m_speedModifier = 1.0f;

        public float SpeedModifier
        {
            get { return m_speedModifier; }
            set { m_speedModifier = value; }
        }

        private bool m_forceFly;

        public bool ForceFly
        {
            get { return m_forceFly; }
            set { m_forceFly = value; }
        }

        private bool m_flyDisabled;

        public bool FlyDisabled
        {
            get { return m_flyDisabled; }
            set { m_flyDisabled = value; }
        }

        public string Viewer
        {
            get { return m_scene.AuthenticateHandler.GetAgentCircuitData(ControllingClient.CircuitCode).Viewer; }
        }

        #endregion

        #region Constructor(s)

        public ScenePresence(
            IClientAPI client, Scene world, AvatarAppearance appearance, PresenceType type)
        {
            AttachmentsSyncLock = new Object();
            AllowMovement = true;
            IsChildAgent = true;
            m_sendCoarseLocationsMethod = SendCoarseLocationsDefault;
            Animator = new ScenePresenceAnimator(this);
            PresenceType = type;
            DrawDistance = world.DefaultDrawDistance;
            RegionHandle = world.RegionInfo.RegionHandle;
            ControllingClient = client;
            Firstname = ControllingClient.FirstName;
            Lastname = ControllingClient.LastName;
            m_name = String.Format("{0} {1}", Firstname, Lastname);
            m_scene = world;
            m_uuid = client.AgentId;
            LocalId = m_scene.AllocateLocalId();

            UserAccount account = m_scene.UserAccountService.GetUserAccount(m_scene.RegionInfo.ScopeID, m_uuid);
            if (account != null)
                m_userFlags = account.UserFlags;
            else
                m_userFlags = 0;

            if (account != null)
                UserLevel = account.UserLevel;

            IGroupsModule gm = m_scene.RequestModuleInterface<IGroupsModule>();
            if (gm != null)
                Grouptitle = gm.GetGroupTitle(m_uuid);

            m_scriptEngines = m_scene.RequestModuleInterfaces<IScriptModule>();
            
            AbsolutePosition = posLastSignificantMove = CameraPosition =
                m_lastCameraPosition = ControllingClient.StartPos;

            m_reprioritization_timer = new Timer(world.ReprioritizationInterval);
            m_reprioritization_timer.Elapsed += new ElapsedEventHandler(Reprioritize);
            m_reprioritization_timer.AutoReset = false;

            AdjustKnownSeeds();

            RegisterToEvents();
            SetDirectionVectors();

            Appearance = appearance;
        }

        public void RegisterToEvents()
        {
            ControllingClient.OnCompleteMovementToRegion += CompleteMovement;
            ControllingClient.OnAgentUpdate += HandleAgentUpdate;
            ControllingClient.OnAgentRequestSit += HandleAgentRequestSit;
            ControllingClient.OnAgentSit += HandleAgentSit;
            ControllingClient.OnSetAlwaysRun += HandleSetAlwaysRun;
            ControllingClient.OnStartAnim += HandleStartAnim;
            ControllingClient.OnStopAnim += HandleStopAnim;
            ControllingClient.OnForceReleaseControls += HandleForceReleaseControls;
            ControllingClient.OnAutoPilotGo += MoveToTarget;

            // ControllingClient.OnChildAgentStatus += new StatusChange(this.ChildStatusChange);
            // ControllingClient.OnStopMovement += new GenericCall2(this.StopMovement);
        }

        private void SetDirectionVectors()
        {
            Dir_Vectors[0] = Vector3.UnitX; //FORWARD
            Dir_Vectors[1] = -Vector3.UnitX; //BACK
            Dir_Vectors[2] = Vector3.UnitY; //LEFT
            Dir_Vectors[3] = -Vector3.UnitY; //RIGHT
            Dir_Vectors[4] = Vector3.UnitZ; //UP
            Dir_Vectors[5] = -Vector3.UnitZ; //DOWN
            Dir_Vectors[6] = new Vector3(0.5f, 0f, 0f); //FORWARD_NUDGE
            Dir_Vectors[7] = new Vector3(-0.5f, 0f, 0f);  //BACK_NUDGE
            Dir_Vectors[8] = new Vector3(0f, 0.5f, 0f);  //LEFT_NUDGE
            Dir_Vectors[9] = new Vector3(0f, -0.5f, 0f);  //RIGHT_NUDGE
            Dir_Vectors[10] = new Vector3(0f, 0f, -0.5f); //DOWN_Nudge
        }

        private Vector3[] GetWalkDirectionVectors()
        {
            Vector3[] vector = new Vector3[11];
            vector[0] = new Vector3(CameraUpAxis.Z, 0f, -CameraAtAxis.Z); //FORWARD
            vector[1] = new Vector3(-CameraUpAxis.Z, 0f, CameraAtAxis.Z); //BACK
            vector[2] = Vector3.UnitY; //LEFT
            vector[3] = -Vector3.UnitY; //RIGHT
            vector[4] = new Vector3(CameraAtAxis.Z, 0f, CameraUpAxis.Z); //UP
            vector[5] = new Vector3(-CameraAtAxis.Z, 0f, -CameraUpAxis.Z); //DOWN
            vector[6] = new Vector3(CameraUpAxis.Z, 0f, -CameraAtAxis.Z); //FORWARD_NUDGE
            vector[7] = new Vector3(-CameraUpAxis.Z, 0f, CameraAtAxis.Z); //BACK_NUDGE
            vector[8] = Vector3.UnitY; //LEFT_NUDGE
            vector[9] = -Vector3.UnitY; //RIGHT_NUDGE
            vector[10] = new Vector3(-CameraAtAxis.Z, 0f, -CameraUpAxis.Z); //DOWN_NUDGE
            return vector;
        }

        #endregion

        #region Status Methods

        /// <summary>
        /// Turns a child agent into a root agent.
        /// </summary>
        /// Child agents are logged into neighbouring sims largely to observe changes.  Root agents exist when the
        /// avatar is actual in the sim.  They can perform all actions.
        /// This change is made whenever an avatar enters a region, whether by crossing over from a neighbouring sim,
        /// teleporting in or on initial login.
        ///
        /// This method is on the critical path for transferring an avatar from one region to another.  Delay here
        /// delays that crossing.
        /// </summary>
        public void MakeRootAgent(Vector3 pos, bool isFlying)
        {
            m_log.DebugFormat(
                "[SCENE]: Upgrading child to root agent for {0} in {1}",
                Name, m_scene.RegionInfo.RegionName);

            //m_log.DebugFormat("[SCENE]: known regions in {0}: {1}", Scene.RegionInfo.RegionName, KnownChildRegionHandles.Count);

            bool wasChild = IsChildAgent;
            IsChildAgent = false;

            IGroupsModule gm = m_scene.RequestModuleInterface<IGroupsModule>();
            if (gm != null)
                Grouptitle = gm.GetGroupTitle(m_uuid);

            RegionHandle = m_scene.RegionInfo.RegionHandle;

            m_scene.EventManager.TriggerSetRootAgentScene(m_uuid, m_scene);

            // Moved this from SendInitialData to ensure that Appearance is initialized
            // before the inventory is processed in MakeRootAgent. This fixes a race condition
            // related to the handling of attachments
            //m_scene.GetAvatarAppearance(ControllingClient, out Appearance);
            if (m_scene.TestBorderCross(pos, Cardinals.E))
            {
                Border crossedBorder = m_scene.GetCrossedBorder(pos, Cardinals.E);
                pos.X = crossedBorder.BorderLine.Z - 1;
            }

            if (m_scene.TestBorderCross(pos, Cardinals.N))
            {
                Border crossedBorder = m_scene.GetCrossedBorder(pos, Cardinals.N);
                pos.Y = crossedBorder.BorderLine.Z - 1;
            }

            CheckAndAdjustLandingPoint(ref pos);

            if (pos.X < 0f || pos.Y < 0f || pos.Z < 0f)
            {
                m_log.WarnFormat(
                    "[SCENE PRESENCE]: MakeRootAgent() was given an illegal position of {0} for avatar {1}, {2}. Clamping",
                    pos, Name, UUID);

                if (pos.X < 0f) pos.X = 0f;
                if (pos.Y < 0f) pos.Y = 0f;
                if (pos.Z < 0f) pos.Z = 0f;
            }

            float localAVHeight = 1.56f;
            if (Appearance.AvatarHeight > 0)
                localAVHeight = Appearance.AvatarHeight;

            float posZLimit = 0;

            if (pos.X < Constants.RegionSize && pos.Y < Constants.RegionSize)
                posZLimit = (float)m_scene.Heightmap[(int)pos.X, (int)pos.Y];
            
            float newPosZ = posZLimit + localAVHeight / 2;
            if (posZLimit >= (pos.Z - (localAVHeight / 2)) && !(Single.IsInfinity(newPosZ) || Single.IsNaN(newPosZ)))
            {
                pos.Z = newPosZ;
            }
            AbsolutePosition = pos;

            AddToPhysicalScene(isFlying);

            if (ForceFly)
            {
                Flying = true;
            }
            else if (FlyDisabled)
            {
                Flying = false;
            }

            // Don't send an animation pack here, since on a region crossing this will sometimes cause a flying 
            // avatar to return to the standing position in mid-air.  On login it looks like this is being sent
            // elsewhere anyway
            // Animator.SendAnimPack();

            m_scene.SwapRootAgentCount(false);

            // The initial login scene presence is already root when it gets here
            // and it has already rezzed the attachments and started their scripts.
            // We do the following only for non-login agents, because their scripts
            // haven't started yet.
            lock (m_attachments)
            {
                if (wasChild && HasAttachments())
                {
                    m_log.DebugFormat(
                        "[SCENE PRESENCE]: Restarting scripts in attachments for {0} in {1}", Name, Scene.Name);
                    
                    // Resume scripts
                    foreach (SceneObjectGroup sog in m_attachments)
                    {
                        sog.RootPart.ParentGroup.CreateScriptInstances(0, false, m_scene.DefaultScriptEngine, GetStateSource());
                        sog.ResumeScripts();
                    }
                }
            }

            // send the animations of the other presences to me
            m_scene.ForEachRootScenePresence(delegate(ScenePresence presence)
            {
                if (presence != this)
                    presence.Animator.SendAnimPackToClient(ControllingClient);
            });

            // If we don't reset the movement flag here, an avatar that crosses to a neighbouring sim and returns will
            // stall on the border crossing since the existing child agent will still have the last movement
            // recorded, which stops the input from being processed.
            MovementFlag = 0;

            m_scene.EventManager.TriggerOnMakeRootAgent(this);
        }

        public int GetStateSource()
        {
            AgentCircuitData aCircuit = m_scene.AuthenticateHandler.GetAgentCircuitData(UUID);

            if (aCircuit != null && (aCircuit.teleportFlags != (uint)TeleportFlags.Default))
            {
                // This will get your attention
                //m_log.Error("[XXX] Triggering CHANGED_TELEPORT");

                return 5; // StateSource.Teleporting
            }
            return 2; // StateSource.PrimCrossing
        }

        /// <summary>
        /// This turns a root agent into a child agent
        /// </summary>
        /// <remarks>
        /// when an agent departs this region for a neighbor, this gets called.
        ///
        /// It doesn't get called for a teleport.  Reason being, an agent that
        /// teleports out may not end up anywhere near this region
        /// </remarks>
        public void MakeChildAgent()
        {
            m_log.DebugFormat("[SCENE PRESENCE]: Making {0} a child agent in {1}", Name, Scene.RegionInfo.RegionName);

            // Reset these so that teleporting in and walking out isn't seen
            // as teleporting back
            TeleportFlags = TeleportFlags.Default;

            // It looks like Animator is set to null somewhere, and MakeChild
            // is called after that. Probably in aborted teleports.
            if (Animator == null)
                Animator = new ScenePresenceAnimator(this);
            else
                Animator.ResetAnimations();

//            m_log.DebugFormat(
//                 "[SCENE PRESENCE]: Downgrading root agent {0}, {1} to a child agent in {2}",
//                 Name, UUID, m_scene.RegionInfo.RegionName);

            // Don't zero out the velocity since this can cause problems when an avatar is making a region crossing,
            // depending on the exact timing.  This shouldn't matter anyway since child agent positions are not updated.
            //Velocity = new Vector3(0, 0, 0);
            
            IsChildAgent = true;
            m_scene.SwapRootAgentCount(true);
            RemoveFromPhysicalScene();

            // FIXME: Set RegionHandle to the region handle of the scene this agent is moving into
            
            m_scene.EventManager.TriggerOnMakeChildAgent(this);
        }

        /// <summary>
        /// Removes physics plugin scene representation of this agent if it exists.
        /// </summary>
        public void RemoveFromPhysicalScene()
        {
            if (PhysicsActor != null)
            {
//                PhysicsActor.OnRequestTerseUpdate -= SendTerseUpdateToAllClients;
                PhysicsActor.OnOutOfBounds -= OutOfBoundsCall;
                m_scene.PhysicsScene.RemoveAvatar(PhysicsActor);
                PhysicsActor.UnSubscribeEvents();
                PhysicsActor.OnCollisionUpdate -= PhysicsCollisionUpdate;
                PhysicsActor = null;
            }
//            else
//            {
//                m_log.ErrorFormat(
//                    "[SCENE PRESENCE]: Attempt to remove physics actor for {0} on {1} but this scene presence has no physics actor",
//                    Name, Scene.RegionInfo.RegionName);
//            }
        }

        /// <summary>
        /// Do not call this directly.  Call Scene.RequestTeleportLocation() instead.
        /// </summary>
        /// <param name="pos"></param>
        public void Teleport(Vector3 pos)
        {
            TeleportWithMomentum(pos, null);
        }

        public void TeleportWithMomentum(Vector3 pos, Vector3? v)
        {
            if (ParentID != (uint)0)
                StandUp();
            bool isFlying = Flying;
            Vector3 vel = Velocity;
            RemoveFromPhysicalScene();
            CheckLandingPoint(ref pos);
            AbsolutePosition = pos;
            AddToPhysicalScene(isFlying);
            if (PhysicsActor != null)
            {
                if (v.HasValue)
                    PhysicsActor.SetMomentum((Vector3)v);
                else
                    PhysicsActor.SetMomentum(vel);
            }

            SendTerseUpdateToAllClients();
        }

        public void StopFlying()
        {
            ControllingClient.StopFlying(this);
        }

        // neighbouring regions we have enabled a child agent in
        // holds the seed cap for the child agent in that region
        private Dictionary<ulong, string> m_knownChildRegions = new Dictionary<ulong, string>();

        public void AddNeighbourRegion(ulong regionHandle, string cap)
        {
            lock (m_knownChildRegions)
            {
                if (!m_knownChildRegions.ContainsKey(regionHandle))
                {
                    uint x, y;
                    Utils.LongToUInts(regionHandle, out x, out y);
                    m_knownChildRegions.Add(regionHandle, cap);
                }
            }
        }

        public void RemoveNeighbourRegion(ulong regionHandle)
        {
            lock (m_knownChildRegions)
            {
                // Checking ContainsKey is redundant as Remove works either way and returns a bool
                // This is here to allow the Debug output to be conditional on removal
                //if (m_knownChildRegions.ContainsKey(regionHandle))
                //    m_log.DebugFormat(" !!! removing known region {0} in {1}. Count = {2}", regionHandle, Scene.RegionInfo.RegionName, m_knownChildRegions.Count);
                m_knownChildRegions.Remove(regionHandle);
            }
        }

        public void DropOldNeighbours(List<ulong> oldRegions)
        {
            foreach (ulong handle in oldRegions)
            {
                RemoveNeighbourRegion(handle);
                Scene.CapsModule.DropChildSeed(UUID, handle);
            }
        }

        public Dictionary<ulong, string> KnownRegions
        {
            get
            {
                lock (m_knownChildRegions)
                    return new Dictionary<ulong, string>(m_knownChildRegions);
            }
            set
            {
                // Replacing the reference is atomic but we still need to lock on
                // the original dictionary object which may be in use elsewhere
                lock (m_knownChildRegions)
                    m_knownChildRegions = value;
            }
        }

        public List<ulong> KnownRegionHandles
        {
            get
            {
                return new List<ulong>(KnownRegions.Keys);
            }
        }

        public int KnownRegionCount
        {
            get
            {
                lock (m_knownChildRegions)
                    return m_knownChildRegions.Count;
            }
        }

        #endregion

        #region Event Handlers

        /// <summary>
        /// Sets avatar height in the physics plugin
        /// </summary>
        /// <param name="height">New height of avatar</param>
        public void SetHeight(float height)
        {
            if (PhysicsActor != null && !IsChildAgent)
                PhysicsActor.Size = new Vector3(0.45f, 0.6f, height);
        }

        /// <summary>
        /// Complete Avatar's movement into the region.
        /// </summary>
        /// <param name="client"></param>
        /// <param name="openChildAgents">
        /// If true, send notification to neighbour regions to expect
        /// a child agent from the client.  These neighbours can be some distance away, depending right now on the
        /// configuration of DefaultDrawDistance in the [Startup] section of config
        /// </param>
        public void CompleteMovement(IClientAPI client, bool openChildAgents)
        {
//            DateTime startTime = DateTime.Now;

            m_log.DebugFormat(
                "[SCENE PRESENCE]: Completing movement of {0} into region {1} in position {2}",
                client.Name, Scene.RegionInfo.RegionName, AbsolutePosition);

            Vector3 look = Velocity;

            if ((look.X == 0) && (look.Y == 0) && (look.Z == 0))
            {
                look = new Vector3(0.99f, 0.042f, 0);
            }

            // Prevent teleporting to an underground location
            // (may crash client otherwise)
            //
            Vector3 pos = AbsolutePosition;
            float ground = m_scene.GetGroundHeight(pos.X, pos.Y);
            if (pos.Z < ground + 1.5f)
            {
                pos.Z = ground + 1.5f;
                AbsolutePosition = pos;
            }

            bool flying = ((m_AgentControlFlags & AgentManager.ControlFlags.AGENT_CONTROL_FLY) != 0);
            MakeRootAgent(AbsolutePosition, flying);
            ControllingClient.MoveAgentIntoRegion(m_scene.RegionInfo, AbsolutePosition, look);

//            m_log.DebugFormat("[SCENE PRESENCE] Completed movement");

            if ((m_callbackURI != null) && !m_callbackURI.Equals(""))
            {
                // We cannot sleep here since this would hold up the inbound packet processing thread, as
                // CompleteMovement() is executed synchronously.  However, it might be better to delay the release
                // here until we know for sure that the agent is active in this region.  Sending AgentMovementComplete
                // is not enough for Imprudence clients - there appears to be a small delay (<200ms, <500ms) until they regard this
                // region as the current region, meaning that a close sent before then will fail the teleport.
//                System.Threading.Thread.Sleep(2000);

                m_log.DebugFormat(
                    "[SCENE PRESENCE]: Releasing {0} {1} with callback to {2}",
                    client.Name, client.AgentId, m_callbackURI);

                Scene.SimulationService.ReleaseAgent(m_originRegionID, UUID, m_callbackURI);
                m_callbackURI = null;
            }
//            else
//            {
//                m_log.DebugFormat(
//                    "[SCENE PRESENCE]: No callback provided on CompleteMovement of {0} {1} to {2}",
//                    client.Name, client.AgentId, m_scene.RegionInfo.RegionName);
//            }

            ValidateAndSendAppearanceAndAgentData();

            // Create child agents in neighbouring regions
            if (openChildAgents && !IsChildAgent)
            {
                IEntityTransferModule m_agentTransfer = m_scene.RequestModuleInterface<IEntityTransferModule>();
                if (m_agentTransfer != null)
                    Util.FireAndForget(delegate { m_agentTransfer.EnableChildAgents(this); });

                IFriendsModule friendsModule = m_scene.RequestModuleInterface<IFriendsModule>();
                if (friendsModule != null)
                    friendsModule.SendFriendsOnlineIfNeeded(ControllingClient);
            }

//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: Completing movement of {0} into region {1} took {2}ms", 
//                client.Name, Scene.RegionInfo.RegionName, (DateTime.Now - startTime).Milliseconds);
        }

        /// <summary>
        /// Callback for the Camera view block check.  Gets called with the results of the camera view block test
        /// hitYN is true when there's something in the way.
        /// </summary>
        /// <param name="hitYN"></param>
        /// <param name="collisionPoint"></param>
        /// <param name="localid"></param>
        /// <param name="distance"></param>
        public void RayCastCameraCallback(bool hitYN, Vector3 collisionPoint, uint localid, float distance, Vector3 pNormal)
        {
            const float POSITION_TOLERANCE = 0.02f;
            const float VELOCITY_TOLERANCE = 0.02f;
            const float ROTATION_TOLERANCE = 0.02f;

            if (m_followCamAuto)
            {
                if (hitYN)
                {
                    CameraConstraintActive = true;
                    //m_log.DebugFormat("[RAYCASTRESULT]: {0}, {1}, {2}, {3}", hitYN, collisionPoint, localid, distance);
                    
                    Vector3 normal = Vector3.Normalize(new Vector3(0f, 0f, collisionPoint.Z) - collisionPoint);
                    ControllingClient.SendCameraConstraint(new Vector4(normal.X, normal.Y, normal.Z, -1 * Vector3.Distance(new Vector3(0,0,collisionPoint.Z),collisionPoint)));
                }
                else
                {
                    if (!m_pos.ApproxEquals(m_lastPosition, POSITION_TOLERANCE) ||
                        !Velocity.ApproxEquals(m_lastVelocity, VELOCITY_TOLERANCE) ||
                        !Rotation.ApproxEquals(m_lastRotation, ROTATION_TOLERANCE))
                    {
                        if (CameraConstraintActive)
                        {
                            ControllingClient.SendCameraConstraint(new Vector4(0f, 0.5f, 0.9f, -3000f));
                            CameraConstraintActive = false;
                        }
                    }
                }
            }
        }

        /// <summary>
        /// This is the event handler for client movement. If a client is moving, this event is triggering.
        /// </summary>
        public void HandleAgentUpdate(IClientAPI remoteClient, AgentUpdateArgs agentData)
        {
//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: In {0} received agent update from {1}, flags {2}",
//                Scene.RegionInfo.RegionName, remoteClient.Name, (AgentManager.ControlFlags)agentData.ControlFlags);

            if (IsChildAgent)
            {
            //    // m_log.Debug("DEBUG: HandleAgentUpdate: child agent");
                return;
            }

            ++m_movementUpdateCount;
            if (m_movementUpdateCount < 1)
                m_movementUpdateCount = 1;

            #region Sanity Checking

            // This is irritating.  Really.
            if (!AbsolutePosition.IsFinite())
            {
                RemoveFromPhysicalScene();
                m_log.Error("[AVATAR]: NonFinite Avatar position detected... Reset Position. Mantis this please. Error #9999902");

                m_pos = m_LastFinitePos;
                if (!m_pos.IsFinite())
                {
                    m_pos.X = 127f;
                    m_pos.Y = 127f;
                    m_pos.Z = 127f;
                    m_log.Error("[AVATAR]: NonFinite Avatar position detected... Reset Position. Mantis this please. Error #9999903");
                }

                AddToPhysicalScene(false);
            }
            else
            {
                m_LastFinitePos = m_pos;
            }

            #endregion Sanity Checking

            #region Inputs

            AgentManager.ControlFlags flags = (AgentManager.ControlFlags)agentData.ControlFlags;

            // Camera location in world.  We'll need to raytrace
            // from this location from time to time.
            CameraPosition = agentData.CameraCenter;
            if (Vector3.Distance(m_lastCameraPosition, CameraPosition) >= Scene.RootReprioritizationDistance)
            {
                ReprioritizeUpdates();
                m_lastCameraPosition = CameraPosition;
            }

            // Use these three vectors to figure out what the agent is looking at
            // Convert it to a Matrix and/or Quaternion
            CameraAtAxis = agentData.CameraAtAxis;
            CameraLeftAxis = agentData.CameraLeftAxis;
            CameraUpAxis = agentData.CameraUpAxis;

            // The Agent's Draw distance setting
            // When we get to the point of re-computing neighbors everytime this
            // changes, then start using the agent's drawdistance rather than the 
            // region's draw distance.
            // DrawDistance = agentData.Far;
            DrawDistance = Scene.DefaultDrawDistance;

            // Check if Client has camera in 'follow cam' or 'build' mode.
            Vector3 camdif = (Vector3.One * Rotation - Vector3.One * CameraRotation);

            m_followCamAuto = ((CameraUpAxis.Z > 0.959f && CameraUpAxis.Z < 0.98f)
               && (Math.Abs(camdif.X) < 0.4f && Math.Abs(camdif.Y) < 0.4f)) ? true : false;

            m_mouseLook = (flags & AgentManager.ControlFlags.AGENT_CONTROL_MOUSELOOK) != 0;
            m_leftButtonDown = (flags & AgentManager.ControlFlags.AGENT_CONTROL_LBUTTON_DOWN) != 0;

            #endregion Inputs

//            // Make anims work for client side autopilot
//            if ((flags & AgentManager.ControlFlags.AGENT_CONTROL_AT_POS) != 0)
//                m_updateCount = UPDATE_COUNT;
//
//            // Make turning in place work
//            if ((flags & AgentManager.ControlFlags.AGENT_CONTROL_YAW_POS) != 0 ||
//                (flags & AgentManager.ControlFlags.AGENT_CONTROL_YAW_NEG) != 0)
//                m_updateCount = UPDATE_COUNT;

            if ((flags & AgentManager.ControlFlags.AGENT_CONTROL_STAND_UP) != 0)
            {
                StandUp();
            }

            //m_log.DebugFormat("[FollowCam]: {0}", m_followCamAuto);
            // Raycast from the avatar's head to the camera to see if there's anything blocking the view
            if ((m_movementUpdateCount % NumMovementsBetweenRayCast) == 0 && m_scene.PhysicsScene.SupportsRayCast())
            {
                if (m_followCamAuto)
                {
                    Vector3 posAdjusted = m_pos + HEAD_ADJUSTMENT;
                    m_scene.PhysicsScene.RaycastWorld(m_pos, Vector3.Normalize(CameraPosition - posAdjusted), Vector3.Distance(CameraPosition, posAdjusted) + 0.3f, RayCastCameraCallback);
                }
            }

            uint flagsForScripts = (uint)flags;
            flags = RemoveIgnoredControls(flags, IgnoredControls);

            if ((flags & AgentManager.ControlFlags.AGENT_CONTROL_SIT_ON_GROUND) != 0)
                HandleAgentSitOnGround();

            // In the future, these values might need to go global.
            // Here's where you get them.
            m_AgentControlFlags = flags;
            m_headrotation = agentData.HeadRotation;
            State = agentData.State;

            PhysicsActor actor = PhysicsActor;
            if (actor == null)
            {
                SendControlsToScripts(flagsForScripts);
                return;
            }

            if (AllowMovement && !SitGround)
            {
                Quaternion bodyRotation = agentData.BodyRotation;
                bool update_rotation = false;

                if (bodyRotation != Rotation)
                {
                    Rotation = bodyRotation;
                    update_rotation = true;
                }

                bool update_movementflag = false;

                if (agentData.UseClientAgentPosition)
                {
                    MovingToTarget = (agentData.ClientAgentPosition - AbsolutePosition).Length() > 0.2f;
                    MoveToPositionTarget = agentData.ClientAgentPosition;
                }

                int i = 0;
                bool DCFlagKeyPressed = false;
                Vector3 agent_control_v3 = Vector3.Zero;

                bool newFlying = actor.Flying;

                if (ForceFly)
                    newFlying = true;
                else if (FlyDisabled)
                    newFlying = false;
                else
                    newFlying = ((flags & AgentManager.ControlFlags.AGENT_CONTROL_FLY) != 0);

                if (actor.Flying != newFlying)
                {
                    // Note: ScenePresence.Flying is actually fetched from the physical actor
                    //     so setting PhysActor.Flying here also sets the ScenePresence's value.
                    actor.Flying = newFlying;
                    update_movementflag = true;
                }

                if (ParentID == 0)
                {
                    bool bAllowUpdateMoveToPosition = false;

                    Vector3[] dirVectors;

                    // use camera up angle when in mouselook and not flying or when holding the left mouse button down and not flying
                    // this prevents 'jumping' in inappropriate situations.
                    if (!Flying && (m_mouseLook || m_leftButtonDown))
                        dirVectors = GetWalkDirectionVectors();
                    else
                        dirVectors = Dir_Vectors;

                    // The fact that MovementFlag is a byte needs to be fixed
                    // it really should be a uint
                    // A DIR_CONTROL_FLAG occurs when the user is trying to move in a particular direction.
                    uint nudgehack = 250;
                    foreach (Dir_ControlFlags DCF in DIR_CONTROL_FLAGS)
                    {
                        if (((uint)flags & (uint)DCF) != 0)
                        {
                            DCFlagKeyPressed = true;

                            try
                            {
                                agent_control_v3 += dirVectors[i];
                                //m_log.DebugFormat("[Motion]: {0}, {1}",i, dirVectors[i]);
                            }
                            catch (IndexOutOfRangeException)
                            {
                                // Why did I get this?
                            }

                            if ((MovementFlag & (byte)(uint)DCF) == 0)
                            {
                                if (DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_FORWARD_NUDGE || DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_BACKWARD_NUDGE ||
                                    DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_LEFT_NUDGE || DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_RIGHT_NUDGE)
                                {
                                    MovementFlag |= (byte)nudgehack;
                                }

                                //m_log.DebugFormat("[SCENE PRESENCE]: Updating MovementFlag for {0} with {1}", Name, DCF);
                                MovementFlag += (byte)(uint)DCF;
                                update_movementflag = true;
                            }
                        }
                        else
                        {
                            if ((MovementFlag & (byte)(uint)DCF) != 0 ||
                                ((DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_FORWARD_NUDGE || DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_BACKWARD_NUDGE ||
                                DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_LEFT_NUDGE || DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_RIGHT_NUDGE)
                                && ((MovementFlag & (byte)nudgehack) == nudgehack))
                                ) // This or is for Nudge forward
                            {
                                //m_log.DebugFormat("[SCENE PRESENCE]: Updating MovementFlag for {0} with lack of {1}", Name, DCF);
                                MovementFlag -= ((byte)(uint)DCF);
                                update_movementflag = true;

                                /*
                                    if ((DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_FORWARD_NUDGE || DCF == Dir_ControlFlags.DIR_CONTROL_FLAG_BACKWARD_NUDGE)
                                    && ((MovementFlag & (byte)nudgehack) == nudgehack))
                                    {
                                        m_log.Debug("Removed Hack flag");
                                    }
                                */
                            }
                            else
                            {
                                bAllowUpdateMoveToPosition = true;
                            }
                        }

                        i++;
                    }

                    if (MovingToTarget)
                    {
                        // If the user has pressed a key then we want to cancel any move to target.
                        if (DCFlagKeyPressed)
                        {
                            ResetMoveToTarget();
                            update_movementflag = true;
                        }
                        else if (bAllowUpdateMoveToPosition)
                        {
                            // The UseClientAgentPosition is set if parcel ban is forcing the avatar to move to a
                            // certain position.  It's only check for tolerance on returning to that position is 0.2
                            // rather than 1, at which point it removes its force target.
                            if (HandleMoveToTargetUpdate(agentData.UseClientAgentPosition ? 0.2 : 1, ref agent_control_v3))
                                update_movementflag = true;
                        }
                    }
                }

                // Cause the avatar to stop flying if it's colliding
                // with something with the down arrow pressed.

                // Only do this if we're flying
                if (Flying && !ForceFly)
                {
                    // Landing detection code

                    // Are the landing controls requirements filled?
                    bool controlland = (((flags & AgentManager.ControlFlags.AGENT_CONTROL_UP_NEG) != 0) ||
                                        ((flags & AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_NEG) != 0));

                    if (Flying && IsColliding && controlland)
                    {
                        // nesting this check because LengthSquared() is expensive and we don't 
                        // want to do it every step when flying.
                        if ((Velocity.LengthSquared() <= LAND_VELOCITYMAG_MAX))
                            StopFlying();
                    }
                }

                // If the agent update does move the avatar, then calculate the force ready for the velocity update,
                // which occurs later in the main scene loop
                if (update_movementflag || (update_rotation && DCFlagKeyPressed))
                {
//                    m_log.DebugFormat(
//                        "[SCENE PRESENCE]: In {0} adding velocity of {1} to {2}, umf = {3}, ur = {4}",
//                        m_scene.RegionInfo.RegionName, agent_control_v3, Name, update_movementflag, update_rotation);

                    AddNewMovement(agent_control_v3);
                }
//                else
//                {
//                    if (!update_movementflag)
//                    {
//                        m_log.DebugFormat(
//                            "[SCENE PRESENCE]: In {0} ignoring requested update of {1} for {2} as update_movementflag = false",
//                            m_scene.RegionInfo.RegionName, agent_control_v3, Name);
//                    }
//                }

                if (update_movementflag && ParentID == 0)
                    Animator.UpdateMovementAnimations();

                SendControlsToScripts(flagsForScripts);
            }

            m_scene.EventManager.TriggerOnClientMovement(this);
            TriggerScenePresenceUpdated();
        }

        /// <summary>
        /// Calculate an update to move the presence to the set target.
        /// </summary>
        /// <remarks>
        /// This doesn't actually perform the movement.  Instead, it adds its vector to agent_control_v3.
        /// </remarks>
        /// <param value="agent_control_v3">Cumulative agent movement that this method will update.</param>
        /// <returns>True if movement has been updated in some way.  False otherwise.</returns>
        public bool HandleMoveToTargetUpdate(double tolerance, ref Vector3 agent_control_v3)
        {
//            m_log.DebugFormat("[SCENE PRESENCE]: Called HandleMoveToTargetUpdate() for {0}", Name);

            bool updated = false;

//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: bAllowUpdateMoveToPosition {0}, m_moveToPositionInProgress {1}, m_autopilotMoving {2}",
//                allowUpdate, m_moveToPositionInProgress, m_autopilotMoving);

            double distanceToTarget = Util.GetDistanceTo(AbsolutePosition, MoveToPositionTarget);

//                        m_log.DebugFormat(
//                            "[SCENE PRESENCE]: Abs pos of {0} is {1}, target {2}, distance {3}",
//                            Name, AbsolutePosition, MoveToPositionTarget, distanceToTarget);

            // Check the error term of the current position in relation to the target position
            if (distanceToTarget <= tolerance)
            {
                // We are close enough to the target
                AbsolutePosition = MoveToPositionTarget;
                ResetMoveToTarget();
                updated = true;
            }
            else
            {
                try
                {
                    // move avatar in 3D at one meter/second towards target, in avatar coordinate frame.
                    // This movement vector gets added to the velocity through AddNewMovement().
                    // Theoretically we might need a more complex PID approach here if other
                    // unknown forces are acting on the avatar and we need to adaptively respond
                    // to such forces, but the following simple approach seems to works fine.
                    Vector3 LocalVectorToTarget3D =
                        (MoveToPositionTarget - AbsolutePosition) // vector from cur. pos to target in global coords
                        * Matrix4.CreateFromQuaternion(Quaternion.Inverse(Rotation)); // change to avatar coords
                    // Ignore z component of vector
//                        Vector3 LocalVectorToTarget2D = new Vector3((float)(LocalVectorToTarget3D.X), (float)(LocalVectorToTarget3D.Y), 0f);
                    LocalVectorToTarget3D.Normalize();

                    // update avatar movement flags. the avatar coordinate system is as follows:
                    //
                    //                        +X (forward)
                    //
                    //                        ^
                    //                        |
                    //                        |
                    //                        |
                    //                        |
                    //     (left) +Y <--------o--------> -Y
                    //                       avatar
                    //                        |
                    //                        |
                    //                        |
                    //                        |
                    //                        v
                    //                        -X
                    //

                    // based on the above avatar coordinate system, classify the movement into
                    // one of left/right/back/forward.
                    if (LocalVectorToTarget3D.X < 0) //MoveBack
                    {
                        MovementFlag += (byte)(uint)Dir_ControlFlags.DIR_CONTROL_FLAG_BACK;
                        AgentControlFlags |= (uint)Dir_ControlFlags.DIR_CONTROL_FLAG_BACK;
                        updated = true;
                    }
                    else if (LocalVectorToTarget3D.X > 0) //Move Forward
                    {
                        MovementFlag += (byte)(uint)Dir_ControlFlags.DIR_CONTROL_FLAG_FORWARD;
                        AgentControlFlags |= (uint)Dir_ControlFlags.DIR_CONTROL_FLAG_FORWARD;
                        updated = true;
                    }

                    if (LocalVectorToTarget3D.Y > 0) //MoveLeft
                    {
                        MovementFlag += (byte)(uint)Dir_ControlFlags.DIR_CONTROL_FLAG_LEFT;
                        AgentControlFlags |= (uint)Dir_ControlFlags.DIR_CONTROL_FLAG_LEFT;
                        updated = true;
                    }
                    else if (LocalVectorToTarget3D.Y < 0) //MoveRight
                    {
                        MovementFlag += (byte)(uint)Dir_ControlFlags.DIR_CONTROL_FLAG_RIGHT;
                        AgentControlFlags |= (uint)Dir_ControlFlags.DIR_CONTROL_FLAG_RIGHT;
                        updated = true;
                    }

                    if (LocalVectorToTarget3D.Z > 0) //Up
                    {
                        // Don't set these flags for up or down - doing so will make the avatar crouch or
                        // keep trying to jump even if walking along level ground
                        //MovementFlag += (byte)(uint)Dir_ControlFlags.DIR_CONTROL_FLAG_UP;
                        //AgentControlFlags
                        //AgentControlFlags |= (uint)Dir_ControlFlags.DIR_CONTROL_FLAG_UP;
                        updated = true;
                    }
                    else if (LocalVectorToTarget3D.Z < 0) //Down
                    {
                        //MovementFlag += (byte)(uint)Dir_ControlFlags.DIR_CONTROL_FLAG_DOWN;
                        //AgentControlFlags |= (uint)Dir_ControlFlags.DIR_CONTROL_FLAG_DOWN;
                        updated = true;
                    }

//                        m_log.DebugFormat(
//                            "[SCENE PRESENCE]: HandleMoveToTargetUpdate adding {0} to move vector {1} for {2}",
//                            LocalVectorToTarget3D, agent_control_v3, Name);

                    agent_control_v3 += LocalVectorToTarget3D;
                }
                catch (Exception e)
                {
                    //Avoid system crash, can be slower but...
                    m_log.DebugFormat("Crash! {0}", e.ToString());
                }
            }

            return updated;
        }

        /// <summary>
        /// Move to the given target over time.
        /// </summary>
        /// <param name="pos"></param>
        /// <param name="noFly">
        /// If true, then don't allow the avatar to fly to the target, even if it's up in the air.
        /// This is to allow movement to targets that are known to be on an elevated platform with a continuous path
        /// from start to finish.
        /// </param>
        /// <param name="landAtTarget">
        /// If true and the avatar starts flying during the move then land at the target.
        /// </param>
        public void MoveToTarget(Vector3 pos, bool noFly, bool landAtTarget)
        {
            if (SitGround)
                StandUp();

//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: Avatar {0} received request to move to position {1} in {2}",
//                Name, pos, m_scene.RegionInfo.RegionName);

            if (pos.X < 0 || pos.X >= Constants.RegionSize
                || pos.Y < 0 || pos.Y >= Constants.RegionSize
                || pos.Z < 0)
                return;

//            Vector3 heightAdjust = new Vector3(0, 0, Appearance.AvatarHeight / 2);
//            pos += heightAdjust;
//
//            // Anti duck-walking measure
//            if (Math.Abs(pos.Z - AbsolutePosition.Z) < 0.2f)
//            {
////                m_log.DebugFormat("[SCENE PRESENCE]: Adjusting MoveToPosition from {0} to {1}", pos, AbsolutePosition);
//                pos.Z = AbsolutePosition.Z;
//            }

            float terrainHeight = (float)m_scene.Heightmap[(int)pos.X, (int)pos.Y];
            pos.Z = Math.Max(terrainHeight, pos.Z);

            // Fudge factor.  It appears that if one clicks "go here" on a piece of ground, the go here request is
            // always slightly higher than the actual terrain height.
            // FIXME: This constrains NPC movements as well, so should be somewhere else.
            if (pos.Z - terrainHeight < 0.2)
                pos.Z = terrainHeight;

//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: Avatar {0} set move to target {1} (terrain height {2}) in {3}",
//                Name, pos, terrainHeight, m_scene.RegionInfo.RegionName);

            if (noFly)
                Flying = false;
            else if (pos.Z > terrainHeight)
                Flying = true;

            LandAtTarget = landAtTarget;
            MovingToTarget = true;
            MoveToPositionTarget = pos;

            // Rotate presence around the z-axis to point in same direction as movement.
            // Ignore z component of vector
            Vector3 localVectorToTarget3D = pos - AbsolutePosition;
            Vector3 localVectorToTarget2D = new Vector3((float)(localVectorToTarget3D.X), (float)(localVectorToTarget3D.Y), 0f);

//            m_log.DebugFormat("[SCENE PRESENCE]: Local vector to target is {0}", localVectorToTarget2D);

            // Calculate the yaw.
            Vector3 angle = new Vector3(0, 0, (float)(Math.Atan2(localVectorToTarget2D.Y, localVectorToTarget2D.X)));

//            m_log.DebugFormat("[SCENE PRESENCE]: Angle is {0}", angle);

            Rotation = Quaternion.CreateFromEulers(angle);
//            m_log.DebugFormat("[SCENE PRESENCE]: Body rot for {0} set to {1}", Name, Rotation);
            
            Vector3 agent_control_v3 = new Vector3();
            HandleMoveToTargetUpdate(1, ref agent_control_v3);
            AddNewMovement(agent_control_v3);
        }

        /// <summary>
        /// Reset the move to target.
        /// </summary>
        public void ResetMoveToTarget()
        {
//            m_log.DebugFormat("[SCENE PRESENCE]: Resetting move to target for {0}", Name);

            MovingToTarget = false;
            MoveToPositionTarget = Vector3.Zero;

            // We need to reset the control flag as the ScenePresenceAnimator uses this to determine the correct
            // resting animation (e.g. hover or stand).  NPCs don't have a client that will quickly reset this flag.
            // However, the line is here rather than in the NPC module since it also appears necessary to stop a
            // viewer that uses "go here" from juddering on all subsequent avatar movements.
            AgentControlFlags = (uint)AgentManager.ControlFlags.NONE;
        }

        /// <summary>
        /// Perform the logic necessary to stand the avatar up.  This method also executes
        /// the stand animation.
        /// </summary>
        public void StandUp()
        {
//            m_log.DebugFormat("[SCENE PRESENCE]: StandUp() for {0}", Name);

            SitGround = false;
            if (PhysicsActor == null)
                AddToPhysicalScene(false);

            if (ParentID != 0)
            {
                SceneObjectPart part = ParentPart;
                TaskInventoryDictionary taskIDict = part.TaskInventory;
                if (taskIDict != null)
                {
                    lock (taskIDict)
                    {
                        foreach (UUID taskID in taskIDict.Keys)
                        {
                            UnRegisterControlEventsToScript(LocalId, taskID);
                            taskIDict[taskID].PermsMask &= ~(
                                2048 | //PERMISSION_CONTROL_CAMERA
                                4); // PERMISSION_TAKE_CONTROLS
                        }
                    }
                }

                ParentPosition = part.GetWorldPosition();
                ControllingClient.SendClearFollowCamProperties(part.ParentUUID);

                m_pos += ParentPosition + new Vector3(0.0f, 0.0f, 2.0f * m_sitAvatarHeight);
                ParentPosition = Vector3.Zero;

                ParentID = 0;
                ParentPart = null;
                SendAvatarDataToAllAgents();
                m_requestedSitTargetID = 0;

                part.RemoveSittingAvatar(UUID);

                if (part != null)
                    part.ParentGroup.TriggerScriptChangedEvent(Changed.LINK);
            }

            Animator.TrySetMovementAnimation("STAND");
        }

        private SceneObjectPart FindNextAvailableSitTarget(UUID targetID)
        {
            SceneObjectPart targetPart = m_scene.GetSceneObjectPart(targetID);
            if (targetPart == null)
                return null;

            // If the primitive the player clicked on has a sit target and that sit target is not full, that sit target is used.
            // If the primitive the player clicked on has no sit target, and one or more other linked objects have sit targets that are not full, the sit target of the object with the lowest link number will be used.

            // Get our own copy of the part array, and sort into the order we want to test
            SceneObjectPart[] partArray = targetPart.ParentGroup.Parts;
            Array.Sort(partArray, delegate(SceneObjectPart p1, SceneObjectPart p2)
                       {
                           // we want the originally selected part first, then the rest in link order -- so make the selected part link num (-1)
                           int linkNum1 = p1==targetPart ? -1 : p1.LinkNum;
                           int linkNum2 = p2==targetPart ? -1 : p2.LinkNum;
                           return linkNum1 - linkNum2;
                       }
                );

            //look for prims with explicit sit targets that are available
            foreach (SceneObjectPart part in partArray)
            {
                if (part.IsSitTargetSet && part.SitTargetAvatar == UUID.Zero)
                {
                    //switch the target to this prim
                    return part;
                }
            }

            // no explicit sit target found - use original target
            return targetPart;
        }

        private void SendSitResponse(UUID targetID, Vector3 offset, Quaternion sitOrientation)
        {
            Vector3 cameraEyeOffset = Vector3.Zero;
            Vector3 cameraAtOffset = Vector3.Zero;
            bool forceMouselook = false;

            SceneObjectPart part = FindNextAvailableSitTarget(targetID);
            if (part == null)
                return;

            // TODO: determine position to sit at based on scene geometry; don't trust offset from client
            // see http://wiki.secondlife.com/wiki/User:Andrew_Linden/Office_Hours/2007_11_06 for details on how LL does it

            if (PhysicsActor != null)
                m_sitAvatarHeight = PhysicsActor.Size.Z;

            bool canSit = false;
            Vector3 pos = part.AbsolutePosition + offset;

            if (part.IsSitTargetSet && part.SitTargetAvatar == UUID.Zero)
            {
//                    m_log.DebugFormat(
//                        "[SCENE PRESENCE]: Sitting {0} on {1} {2} because sit target is set and unoccupied",
//                        Name, part.Name, part.LocalId);

                offset = part.SitTargetPosition;
                sitOrientation = part.SitTargetOrientation;
                canSit = true;
            }
            else
            {
                if (Util.GetDistanceTo(AbsolutePosition, pos) <= 10)
                {
//                    m_log.DebugFormat(
//                        "[SCENE PRESENCE]: Sitting {0} on {1} {2} because sit target is unset and within 10m",
//                        Name, part.Name, part.LocalId);

                    AbsolutePosition = pos + new Vector3(0.0f, 0.0f, m_sitAvatarHeight);
                    canSit = true;
                }
//                else
//                {
//                    m_log.DebugFormat(
//                        "[SCENE PRESENCE]: Ignoring sit request of {0} on {1} {2} because sit target is unset and outside 10m",
//                        Name, part.Name, part.LocalId);
//                }
            }

            if (canSit)
            {
                if (PhysicsActor != null)
                {
                    // We can remove the physicsActor until they stand up.
                    RemoveFromPhysicalScene();
                }

                part.AddSittingAvatar(UUID);

                cameraAtOffset = part.GetCameraAtOffset();
                cameraEyeOffset = part.GetCameraEyeOffset();
                forceMouselook = part.GetForceMouselook();

                ControllingClient.SendSitResponse(
                    targetID, offset, sitOrientation, false, cameraAtOffset, cameraEyeOffset, forceMouselook);

                m_requestedSitTargetUUID = targetID;

                HandleAgentSit(ControllingClient, UUID);

                // Moved here to avoid a race with default sit anim
                // The script event needs to be raised after the default sit anim is set.
                part.ParentGroup.TriggerScriptChangedEvent(Changed.LINK);
            }
        }

        public void HandleAgentRequestSit(IClientAPI remoteClient, UUID agentID, UUID targetID, Vector3 offset)
        {
            if (ParentID != 0)
            {
                StandUp();
            }

//            if (!String.IsNullOrEmpty(sitAnimation))
//            {
//                m_nextSitAnimation = sitAnimation;
//            }
//            else
//            {
            m_nextSitAnimation = "SIT";
//            }

            //SceneObjectPart part = m_scene.GetSceneObjectPart(targetID);
            SceneObjectPart part = FindNextAvailableSitTarget(targetID);

            if (part != null)
            {
                if (!String.IsNullOrEmpty(part.SitAnimation))
                {
                    m_nextSitAnimation = part.SitAnimation;
                }

                m_requestedSitTargetID = part.LocalId;
                m_requestedSitTargetUUID = targetID;

//                m_log.DebugFormat("[SIT]: Client requested Sit Position: {0}", offset);

                if (m_scene.PhysicsScene.SupportsRayCast())
                {
                    //m_scene.PhysicsScene.RaycastWorld(Vector3.Zero,Vector3.Zero, 0.01f,new RaycastCallback());
                    //SitRayCastAvatarPosition(part);
                    //return;
                }
            }
            else
            {
                m_log.Warn("Sit requested on unknown object: " + targetID.ToString());
            }

            SendSitResponse(targetID, offset, Quaternion.Identity);
        }

        /*
        public void SitRayCastAvatarPosition(SceneObjectPart part)
        {
            Vector3 EndRayCastPosition = part.AbsolutePosition + m_requestedSitOffset;
            Vector3 StartRayCastPosition = AbsolutePosition;
            Vector3 direction = Vector3.Normalize(EndRayCastPosition - StartRayCastPosition);
            float distance = Vector3.Distance(EndRayCastPosition, StartRayCastPosition);
            m_scene.PhysicsScene.RaycastWorld(StartRayCastPosition, direction, distance, SitRayCastAvatarPositionResponse);
        }

        public void SitRayCastAvatarPositionResponse(bool hitYN, Vector3 collisionPoint, uint localid, float pdistance, Vector3 normal)
        {
            SceneObjectPart part =  FindNextAvailableSitTarget(m_requestedSitTargetUUID);
            if (part != null)
            {
                if (hitYN)
                {
                    if (collisionPoint.ApproxEquals(m_requestedSitOffset + part.AbsolutePosition, 0.2f))
                    {
                        SitRaycastFindEdge(collisionPoint, normal);
                        m_log.DebugFormat("[SIT]: Raycast Avatar Position succeeded at point: {0}, normal:{1}", collisionPoint, normal);
                    }
                    else
                    {
                        SitRayCastAvatarPositionCameraZ(part);
                    }
                }
                else
                {
                    SitRayCastAvatarPositionCameraZ(part);
                }
            }
            else
            {
                ControllingClient.SendAlertMessage("Sit position no longer exists");
                m_requestedSitTargetUUID = UUID.Zero;
                m_requestedSitTargetID = 0;
                m_requestedSitOffset = Vector3.Zero;
            }

        }

        public void SitRayCastAvatarPositionCameraZ(SceneObjectPart part)
        {
            // Next, try to raycast from the camera Z position
            Vector3 EndRayCastPosition = part.AbsolutePosition + m_requestedSitOffset;
            Vector3 StartRayCastPosition = AbsolutePosition; StartRayCastPosition.Z = CameraPosition.Z;
            Vector3 direction = Vector3.Normalize(EndRayCastPosition - StartRayCastPosition);
            float distance = Vector3.Distance(EndRayCastPosition, StartRayCastPosition);
            m_scene.PhysicsScene.RaycastWorld(StartRayCastPosition, direction, distance, SitRayCastAvatarPositionCameraZResponse);
        }

        public void SitRayCastAvatarPositionCameraZResponse(bool hitYN, Vector3 collisionPoint, uint localid, float pdistance, Vector3 normal)
        {
            SceneObjectPart part = FindNextAvailableSitTarget(m_requestedSitTargetUUID);
            if (part != null)
            {
                if (hitYN)
                {
                    if (collisionPoint.ApproxEquals(m_requestedSitOffset + part.AbsolutePosition, 0.2f))
                    {
                        SitRaycastFindEdge(collisionPoint, normal);
                        m_log.DebugFormat("[SIT]: Raycast Avatar Position + CameraZ succeeded at point: {0}, normal:{1}", collisionPoint, normal);
                    }
                    else
                    {
                        SitRayCastCameraPosition(part);
                    }
                }
                else
                {
                    SitRayCastCameraPosition(part);
                }
            }
            else
            {
                ControllingClient.SendAlertMessage("Sit position no longer exists");
                m_requestedSitTargetUUID = UUID.Zero;
                m_requestedSitTargetID = 0;
                m_requestedSitOffset = Vector3.Zero;
            }

        }

        public void SitRayCastCameraPosition(SceneObjectPart part)
        {
            // Next, try to raycast from the camera position
            Vector3 EndRayCastPosition = part.AbsolutePosition + m_requestedSitOffset;
            Vector3 StartRayCastPosition = CameraPosition;
            Vector3 direction = Vector3.Normalize(EndRayCastPosition - StartRayCastPosition);
            float distance = Vector3.Distance(EndRayCastPosition, StartRayCastPosition);
            m_scene.PhysicsScene.RaycastWorld(StartRayCastPosition, direction, distance, SitRayCastCameraPositionResponse);
        }

        public void SitRayCastCameraPositionResponse(bool hitYN, Vector3 collisionPoint, uint localid, float pdistance, Vector3 normal)
        {
            SceneObjectPart part = FindNextAvailableSitTarget(m_requestedSitTargetUUID);
            if (part != null)
            {
                if (hitYN)
                {
                    if (collisionPoint.ApproxEquals(m_requestedSitOffset + part.AbsolutePosition, 0.2f))
                    {
                        SitRaycastFindEdge(collisionPoint, normal);
                        m_log.DebugFormat("[SIT]: Raycast Camera Position succeeded at point: {0}, normal:{1}", collisionPoint, normal);
                    }
                    else
                    {
                        SitRayHorizontal(part);
                    }
                }
                else
                {
                    SitRayHorizontal(part);
                }
            }
            else
            {
                ControllingClient.SendAlertMessage("Sit position no longer exists");
                m_requestedSitTargetUUID = UUID.Zero;
                m_requestedSitTargetID = 0;
                m_requestedSitOffset = Vector3.Zero;
            }

        }

        public void SitRayHorizontal(SceneObjectPart part)
        {
            // Next, try to raycast from the avatar position to fwd
            Vector3 EndRayCastPosition = part.AbsolutePosition + m_requestedSitOffset;
            Vector3 StartRayCastPosition = CameraPosition;
            Vector3 direction = Vector3.Normalize(EndRayCastPosition - StartRayCastPosition);
            float distance = Vector3.Distance(EndRayCastPosition, StartRayCastPosition);
            m_scene.PhysicsScene.RaycastWorld(StartRayCastPosition, direction, distance, SitRayCastHorizontalResponse);
        }

        public void SitRayCastHorizontalResponse(bool hitYN, Vector3 collisionPoint, uint localid, float pdistance, Vector3 normal)
        {
            SceneObjectPart part = FindNextAvailableSitTarget(m_requestedSitTargetUUID);
            if (part != null)
            {
                if (hitYN)
                {
                    if (collisionPoint.ApproxEquals(m_requestedSitOffset + part.AbsolutePosition, 0.2f))
                    {
                        SitRaycastFindEdge(collisionPoint, normal);
                        m_log.DebugFormat("[SIT]: Raycast Horizontal Position succeeded at point: {0}, normal:{1}", collisionPoint, normal);
                        // Next, try to raycast from the camera position
                        Vector3 EndRayCastPosition = part.AbsolutePosition + m_requestedSitOffset;
                        Vector3 StartRayCastPosition = CameraPosition;
                        Vector3 direction = Vector3.Normalize(EndRayCastPosition - StartRayCastPosition);
                        float distance = Vector3.Distance(EndRayCastPosition, StartRayCastPosition);
                        //m_scene.PhysicsScene.RaycastWorld(StartRayCastPosition, direction, distance, SitRayCastResponseAvatarPosition);
                    }
                    else
                    {
                        ControllingClient.SendAlertMessage("Sit position not accessable.");
                        m_requestedSitTargetUUID = UUID.Zero;
                        m_requestedSitTargetID = 0;
                        m_requestedSitOffset = Vector3.Zero;
                    }
                }
                else
                {
                    ControllingClient.SendAlertMessage("Sit position not accessable.");
                    m_requestedSitTargetUUID = UUID.Zero;
                    m_requestedSitTargetID = 0;
                    m_requestedSitOffset = Vector3.Zero;
                }
            }
            else
            {
                ControllingClient.SendAlertMessage("Sit position no longer exists");
                m_requestedSitTargetUUID = UUID.Zero;
                m_requestedSitTargetID = 0;
                m_requestedSitOffset = Vector3.Zero;
            }

        }

        private void SitRaycastFindEdge(Vector3 collisionPoint, Vector3 collisionNormal)
        {
            int i = 0;
            //throw new NotImplementedException();
            //m_requestedSitTargetUUID = UUID.Zero;
            //m_requestedSitTargetID = 0;
            //m_requestedSitOffset = Vector3.Zero;

            SendSitResponse(ControllingClient, m_requestedSitTargetUUID, collisionPoint - m_requestedSitOffset, Quaternion.Identity);
        }
        */

        public void HandleAgentSit(IClientAPI remoteClient, UUID agentID)
        {
            if (!String.IsNullOrEmpty(m_nextSitAnimation))
            {
                HandleAgentSit(remoteClient, agentID, m_nextSitAnimation);
            }
            else
            {
                HandleAgentSit(remoteClient, agentID, "SIT");
            }
        }

        public void HandleAgentSit(IClientAPI remoteClient, UUID agentID, string sitAnimation)
        {
            SceneObjectPart part = m_scene.GetSceneObjectPart(m_requestedSitTargetID);

            if (part != null)
            {
                if (part.ParentGroup.IsAttachment)
                {
                    m_log.WarnFormat(
                        "[SCENE PRESENCE]: Avatar {0} tried to sit on part {1} from object {2} in {3} but this is an attachment for avatar id {4}",
                        Name, part.Name, part.ParentGroup.Name, Scene.Name, part.ParentGroup.AttachedAvatar);

                    return;
                }

                if (part.SitTargetAvatar == UUID)
                {
                    Vector3 sitTargetPos = part.SitTargetPosition;
                    Quaternion sitTargetOrient = part.SitTargetOrientation;

//                        m_log.DebugFormat(
//                            "[SCENE PRESENCE]: Sitting {0} at sit target {1}, {2} on {3} {4}",
//                            Name, sitTargetPos, sitTargetOrient, part.Name, part.LocalId);

                    //Quaternion vq = new Quaternion(sitTargetPos.X, sitTargetPos.Y+0.2f, sitTargetPos.Z+0.2f, 0);
                    //Quaternion nq = new Quaternion(-sitTargetOrient.X, -sitTargetOrient.Y, -sitTargetOrient.Z, sitTargetOrient.w);

                    //Quaternion result = (sitTargetOrient * vq) * nq;

                    m_pos = sitTargetPos + SIT_TARGET_ADJUSTMENT;
                    Rotation = sitTargetOrient;
                    ParentPosition = part.AbsolutePosition;
                }
                else
                {
                    m_pos -= part.AbsolutePosition;
                    ParentPosition = part.AbsolutePosition;

//                        m_log.DebugFormat(
//                            "[SCENE PRESENCE]: Sitting {0} at position {1} ({2} + {3}) on part {4} {5} without sit target",
//                            Name, part.AbsolutePosition, m_pos, ParentPosition, part.Name, part.LocalId);
                }

                ParentPart = m_scene.GetSceneObjectPart(m_requestedSitTargetID);
                ParentID = m_requestedSitTargetID;

                Velocity = Vector3.Zero;
                RemoveFromPhysicalScene();
        
                Animator.TrySetMovementAnimation(sitAnimation);
                SendAvatarDataToAllAgents();
            }
        }

        public void HandleAgentSitOnGround()
        {
//            m_updateCount = 0;  // Kill animation update burst so that the SIT_G.. will stick.
            Animator.TrySetMovementAnimation("SIT_GROUND_CONSTRAINED");
            SitGround = true;
            RemoveFromPhysicalScene();
        }

        /// <summary>
        /// Event handler for the 'Always run' setting on the client
        /// Tells the physics plugin to increase speed of movement.
        /// </summary>
        public void HandleSetAlwaysRun(IClientAPI remoteClient, bool pSetAlwaysRun)
        {
            SetAlwaysRun = pSetAlwaysRun;
        }

        public void HandleStartAnim(IClientAPI remoteClient, UUID animID)
        {
            Animator.AddAnimation(animID, UUID.Zero);
        }

        public void HandleStopAnim(IClientAPI remoteClient, UUID animID)
        {
            Animator.RemoveAnimation(animID);
        }

        /// <summary>
        /// Rotate the avatar to the given rotation and apply a movement in the given relative vector
        /// </summary>
        /// <param name="vec">The vector in which to move.  This is relative to the rotation argument</param>
        public void AddNewMovement(Vector3 vec)
        {
//            m_log.DebugFormat("[SCENE PRESENCE]: Adding new movement {0} for {1}", vec, Name);

            Vector3 direc = vec * Rotation;
            direc.Normalize();

            if (Flying != FlyingOld)                // add for fly velocity control
            {
                FlyingOld = Flying;                 // add for fly velocity control
                if (!Flying)
                    WasFlying = true;      // add for fly velocity control
            }

            if (IsColliding)
                WasFlying = false;        // add for fly velocity control

            if ((vec.Z == 0f) && !Flying)
                direc.Z = 0f; // Prevent camera WASD up.

            direc *= 0.03f * 128f * SpeedModifier;

            if (PhysicsActor != null)
            {
                if (Flying)
                {
                    direc *= 4.0f;
                    //bool controlland = (((m_AgentControlFlags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_UP_NEG) != 0) || ((m_AgentControlFlags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_NEG) != 0));
                    //if (controlland)
                    //    m_log.Info("[AGENT]: landCommand");
                    //if (IsColliding)
                    //    m_log.Info("[AGENT]: colliding");
                    //if (Flying && IsColliding && controlland)
                    //{
                    //    StopFlying();
                    //    m_log.Info("[AGENT]: Stop Flying");
                    //}
                }
                if (Animator.Falling && WasFlying)    // if falling from flying, disable motion add
                {
                    direc *= 0.0f;
                }
                else if (!Flying && IsColliding)
                {
                    if (direc.Z > 2.0f)
                    {
                        direc.Z *= 2.6f;

                        // TODO: PreJump and jump happen too quickly.  Many times prejump gets ignored.
                        Animator.TrySetMovementAnimation("PREJUMP");
                        Animator.TrySetMovementAnimation("JUMP");
                    }
                }
            }

            // TODO: Add the force instead of only setting it to support multiple forces per frame?
            m_forceToApply = direc;
        }

        #endregion

        #region Overridden Methods

        public override void Update()
        {
            const float ROTATION_TOLERANCE = 0.01f;
            const float VELOCITY_TOLERANCE = 0.001f;
            const float POSITION_TOLERANCE = 0.05f;

            if (IsChildAgent == false)
            {
                // NOTE: Velocity is not the same as m_velocity. Velocity will attempt to
                // grab the latest PhysicsActor velocity, whereas m_velocity is often
                // storing a requested force instead of an actual traveling velocity

                // Throw away duplicate or insignificant updates
                if (!Rotation.ApproxEquals(m_lastRotation, ROTATION_TOLERANCE) ||
                    !Velocity.ApproxEquals(m_lastVelocity, VELOCITY_TOLERANCE) ||
                    !m_pos.ApproxEquals(m_lastPosition, POSITION_TOLERANCE))
                {
                    SendTerseUpdateToAllClients();

                    // Update the "last" values
                    m_lastPosition = m_pos;
                    m_lastRotation = Rotation;
                    m_lastVelocity = Velocity;
                }

                CheckForBorderCrossing();

                CheckForSignificantMovement(); // sends update to the modules.
            }
        }

        #endregion

        #region Update Client(s)


        /// <summary>
        /// Sends a location update to the client connected to this scenePresence
        /// </summary>
        /// <param name="remoteClient"></param>
        public void SendTerseUpdateToClient(IClientAPI remoteClient)
        {
            // If the client is inactive, it's getting its updates from another
            // server.
            if (remoteClient.IsActive)
            {
                //m_log.DebugFormat("[SCENE PRESENCE]: " + Name + " sending TerseUpdate to " + remoteClient.Name + " : Pos={0} Rot={1} Vel={2}", m_pos, Rotation, m_velocity);

                remoteClient.SendEntityUpdate(
                    this,
                    PrimUpdateFlags.Position | PrimUpdateFlags.Rotation | PrimUpdateFlags.Velocity
                    | PrimUpdateFlags.Acceleration | PrimUpdateFlags.AngularVelocity);

                m_scene.StatsReporter.AddAgentUpdates(1);
            }
        }


        // vars to support reduced update frequency when velocity is unchanged
        private Vector3 lastVelocitySentToAllClients = Vector3.Zero;
        private Vector3 lastPositionSentToAllClients = Vector3.Zero;
        private int lastTerseUpdateToAllClientsTick = Util.EnvironmentTickCount();

        /// <summary>
        /// Send a location/velocity/accelleration update to all agents in scene
        /// </summary>
        public void SendTerseUpdateToAllClients()
        {
            int currentTick = Util.EnvironmentTickCount();

            // Decrease update frequency when avatar is moving but velocity is
            // not changing.
            // If there is a mismatch between distance travelled and expected
            // distance based on last velocity sent and velocity hasnt changed,
            // then send a new terse update

            float timeSinceLastUpdate = (currentTick - lastTerseUpdateToAllClientsTick) * 0.001f;

            Vector3 expectedPosition = lastPositionSentToAllClients + lastVelocitySentToAllClients * timeSinceLastUpdate;

            float distanceError = Vector3.Distance(OffsetPosition, expectedPosition);

            float speed = Velocity.Length();
            float velocidyDiff = Vector3.Distance(lastVelocitySentToAllClients, Velocity);

            // assuming 5 ms. worst case precision for timer, use 2x that 
            // for distance error threshold
            float distanceErrorThreshold = speed * 0.01f;

            if (speed < 0.01f // allow rotation updates if avatar position is unchanged
                || Math.Abs(distanceError) > distanceErrorThreshold
                || velocidyDiff > 0.01f) // did velocity change from last update?
            {
                lastVelocitySentToAllClients = Velocity;
                lastTerseUpdateToAllClientsTick = currentTick;
                lastPositionSentToAllClients = OffsetPosition;

                m_scene.ForEachClient(SendTerseUpdateToClient);
            }
            TriggerScenePresenceUpdated();
        }

        public void SendCoarseLocations(List<Vector3> coarseLocations, List<UUID> avatarUUIDs)
        {
            SendCoarseLocationsMethod d = m_sendCoarseLocationsMethod;
            if (d != null)
            {
                d.Invoke(m_scene.RegionInfo.originRegionID, this, coarseLocations, avatarUUIDs);
            }
        }

        public void SetSendCoarseLocationMethod(SendCoarseLocationsMethod d)
        {
            if (d != null)
                m_sendCoarseLocationsMethod = d;
        }

        public void SendCoarseLocationsDefault(UUID sceneId, ScenePresence p, List<Vector3> coarseLocations, List<UUID> avatarUUIDs)
        {
            ControllingClient.SendCoarseLocationUpdate(avatarUUIDs, coarseLocations);
        }

        public void SendInitialDataToMe()
        {
            // Send all scene object to the new client
            Util.FireAndForget(delegate
            {
                // we created a new ScenePresence (a new child agent) in a fresh region.
                // Request info about all the (root) agents in this region
                // Note: This won't send data *to* other clients in that region (children don't send)
                SendOtherAgentsAvatarDataToMe();
                SendOtherAgentsAppearanceToMe();

                EntityBase[] entities = Scene.Entities.GetEntities();
                foreach(EntityBase e in entities)
                {
                    if (e != null && e is SceneObjectGroup)
                        ((SceneObjectGroup)e).SendFullUpdateToClient(ControllingClient);
                }
            });
        }

        /// <summary>
        /// Do everything required once a client completes its movement into a region and becomes
        /// a root agent.
        /// </summary>
        private void ValidateAndSendAppearanceAndAgentData()
        {
            //m_log.DebugFormat("[SCENE PRESENCE] SendInitialData: {0} ({1})", Name, UUID);
            // Moved this into CompleteMovement to ensure that Appearance is initialized before
            // the inventory arrives
            // m_scene.GetAvatarAppearance(ControllingClient, out Appearance);

            bool cachedappearance = false;

            // We have an appearance but we may not have the baked textures. Check the asset cache 
            // to see if all the baked textures are already here. 
            if (m_scene.AvatarFactory != null)
                cachedappearance = m_scene.AvatarFactory.ValidateBakedTextureCache(this);
            
            // If we aren't using a cached appearance, then clear out the baked textures
            if (!cachedappearance)
            {
                Appearance.ResetAppearance();
                if (m_scene.AvatarFactory != null)
                    m_scene.AvatarFactory.QueueAppearanceSave(UUID);
            }
            
            // This agent just became root. We are going to tell everyone about it. The process of
            // getting other avatars information was initiated elsewhere immediately after the child circuit connected... don't do it
            // again here... this comes after the cached appearance check because the avatars
            // appearance goes into the avatar update packet
            SendAvatarDataToAllAgents();
            SendAppearanceToAgent(this);

            // If we are using the the cached appearance then send it out to everyone
            if (cachedappearance)
            {
                m_log.DebugFormat("[SCENE PRESENCE]: baked textures are in the cache for {0}", Name);

                // If the avatars baked textures are all in the cache, then we have a 
                // complete appearance... send it out, if not, then we'll send it when
                // the avatar finishes updating its appearance
                SendAppearanceToAllOtherAgents();
            }
        }

        /// <summary>
        /// Send this agent's avatar data to all other root and child agents in the scene
        /// This agent must be root. This avatar will receive its own update. 
        /// </summary>
        public void SendAvatarDataToAllAgents()
        {
            //m_log.DebugFormat("[SCENE PRESENCE] SendAvatarDataToAllAgents: {0} ({1})", Name, UUID);
            // only send update from root agents to other clients; children are only "listening posts"
            if (IsChildAgent)
            {
                m_log.WarnFormat(
                    "[SCENE PRESENCE]: Attempt to send avatar data from a child agent for {0} in {1}",
                    Name, Scene.RegionInfo.RegionName);

                return;
            }

            int count = 0;
            m_scene.ForEachScenePresence(delegate(ScenePresence scenePresence)
                                         {
                                             SendAvatarDataToAgent(scenePresence);
                                             count++;
                                         });

            m_scene.StatsReporter.AddAgentUpdates(count);
        }

        /// <summary>
        /// Send avatar data for all other root agents to this agent, this agent
        /// can be either a child or root
        /// </summary>
        public void SendOtherAgentsAvatarDataToMe()
        {
            int count = 0;
            m_scene.ForEachRootScenePresence(delegate(ScenePresence scenePresence)
                        {
                            // only send information about other root agents
                            if (scenePresence.UUID == UUID)
                                return;
                                             
                            scenePresence.SendAvatarDataToAgent(this);
                            count++;
                        });

            m_scene.StatsReporter.AddAgentUpdates(count);
        }

        /// <summary>
        /// Send avatar data to an agent.
        /// </summary>
        /// <param name="avatar"></param>
        public void SendAvatarDataToAgent(ScenePresence avatar)
        {
            //m_log.DebugFormat("[SCENE PRESENCE] SendAvatarDataToAgent from {0} ({1}) to {2} ({3})", Name, UUID, avatar.Name, avatar.UUID);

            avatar.ControllingClient.SendAvatarDataImmediate(this);
            Animator.SendAnimPackToClient(avatar.ControllingClient);
        }

        /// <summary>
        /// Send this agent's appearance to all other root and child agents in the scene
        /// This agent must be root.
        /// </summary>
        public void SendAppearanceToAllOtherAgents()
        {
//            m_log.DebugFormat("[SCENE PRESENCE] SendAppearanceToAllOtherAgents: {0} {1}", Name, UUID);

            // only send update from root agents to other clients; children are only "listening posts"
            if (IsChildAgent)
            {
                m_log.WarnFormat(
                    "[SCENE PRESENCE]: Attempt to send avatar data from a child agent for {0} in {1}",
                    Name, Scene.RegionInfo.RegionName);

                return;
            }
            
            int count = 0;
            m_scene.ForEachScenePresence(delegate(ScenePresence scenePresence)
                        {
                            // only send information to other root agents
                            if (scenePresence.UUID == UUID)
                                return;

                            SendAppearanceToAgent(scenePresence);
                            count++;
                        });

            m_scene.StatsReporter.AddAgentUpdates(count);
        }

        /// <summary>
        /// Send appearance from all other root agents to this agent. this agent
        /// can be either root or child
        /// </summary>
        public void SendOtherAgentsAppearanceToMe()
        {
//            m_log.DebugFormat("[SCENE PRESENCE] SendOtherAgentsAppearanceToMe: {0} {1}", Name, UUID);

            int count = 0;
            m_scene.ForEachRootScenePresence(delegate(ScenePresence scenePresence)
                        {
                            // only send information about other root agents
                            if (scenePresence.UUID == UUID)
                                return;
                                             
                            scenePresence.SendAppearanceToAgent(this);
                            count++;
                        });

            m_scene.StatsReporter.AddAgentUpdates(count);
        }

        /// <summary>
        /// Send appearance data to an agent.
        /// </summary>
        /// <param name="avatar"></param>
        public void SendAppearanceToAgent(ScenePresence avatar)
        {
//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: Sending appearance data from {0} {1} to {2} {3}", Name, m_uuid, avatar.Name, avatar.UUID);

            avatar.ControllingClient.SendAppearance(
                UUID, Appearance.VisualParams, Appearance.Texture.GetBytes());
        }

        #endregion

        #region Significant Movement Method

        /// <summary>
        /// This checks for a significant movement and sends a coarselocationchange update
        /// </summary>
        protected void CheckForSignificantMovement()
        {
            if (Util.GetDistanceTo(AbsolutePosition, posLastSignificantMove) > SIGNIFICANT_MOVEMENT)
            {
                posLastSignificantMove = AbsolutePosition;
                m_scene.EventManager.TriggerSignificantClientMovement(this);
            }

            // Minimum Draw distance is 64 meters, the Radius of the draw distance sphere is 32m
            if (Util.GetDistanceTo(AbsolutePosition, m_lastChildAgentUpdatePosition) >= Scene.ChildReprioritizationDistance ||
                Util.GetDistanceTo(CameraPosition, m_lastChildAgentUpdateCamPosition) >= Scene.ChildReprioritizationDistance)
            {
                m_lastChildAgentUpdatePosition = AbsolutePosition;
                m_lastChildAgentUpdateCamPosition = CameraPosition;

                ChildAgentDataUpdate cadu = new ChildAgentDataUpdate();
                cadu.ActiveGroupID = UUID.Zero.Guid;
                cadu.AgentID = UUID.Guid;
                cadu.alwaysrun = SetAlwaysRun;
                cadu.AVHeight = Appearance.AvatarHeight;
                cadu.cameraPosition = CameraPosition;
                cadu.drawdistance = DrawDistance;
                cadu.GroupAccess = 0;
                cadu.Position = AbsolutePosition;
                cadu.regionHandle = RegionHandle;

                // Throttles 
                float multiplier = 1;
                int childRegions = KnownRegionCount;
                if (childRegions != 0)
                    multiplier = 1f / childRegions;

                // Minimum throttle for a child region is 1/4 of the root region throttle
                if (multiplier <= 0.25f)
                    multiplier = 0.25f;

                cadu.throttles = ControllingClient.GetThrottlesPacked(multiplier);
                cadu.Velocity = Velocity;

                AgentPosition agentpos = new AgentPosition();
                agentpos.CopyFrom(cadu);

                // Let's get this out of the update loop
                Util.FireAndForget(delegate { m_scene.SendOutChildAgentUpdates(agentpos, this); });
            }
        }

        #endregion

        #region Border Crossing Methods

        /// <summary>
        /// Starts the process of moving an avatar into another region if they are crossing the border.
        /// </summary>
        /// <remarks>
        /// Also removes the avatar from the physical scene if transit has started.
        /// </remarks>
        protected void CheckForBorderCrossing()
        {
            // Check that we we are not a child
            if (IsChildAgent) 
                return;

            // If we don't have a PhysActor, we can't cross anyway
            // Also don't do this while sat, sitting avatars cross with the
            // object they sit on.
            if (ParentID != 0 || PhysicsActor == null)
                return;

            if (!IsInTransit)
            {
                Vector3 pos2 = AbsolutePosition;
                Vector3 vel = Velocity;
                int neighbor = 0;
                int[] fix = new int[2];

                float timeStep = 0.1f;
                pos2.X = pos2.X + (vel.X * timeStep);
                pos2.Y = pos2.Y + (vel.Y * timeStep);
                pos2.Z = pos2.Z + (vel.Z * timeStep);

                if (!IsInTransit)
                {
                    // Checks if where it's headed exists a region
                    bool needsTransit = false;
                    if (m_scene.TestBorderCross(pos2, Cardinals.W))
                    {
                        if (m_scene.TestBorderCross(pos2, Cardinals.S))
                        {
                            needsTransit = true;
                            neighbor = m_scene.HaveNeighbor(Cardinals.SW, ref fix);
                        }
                        else if (m_scene.TestBorderCross(pos2, Cardinals.N))
                        {
                            needsTransit = true;
                            neighbor = m_scene.HaveNeighbor(Cardinals.NW, ref fix);
                        }
                        else
                        {
                            needsTransit = true;
                            neighbor = m_scene.HaveNeighbor(Cardinals.W, ref fix);
                        }
                    }
                    else if (m_scene.TestBorderCross(pos2, Cardinals.E))
                    {
                        if (m_scene.TestBorderCross(pos2, Cardinals.S))
                        {
                            needsTransit = true;
                            neighbor = m_scene.HaveNeighbor(Cardinals.SE, ref fix);
                        }
                        else if (m_scene.TestBorderCross(pos2, Cardinals.N))
                        {
                            needsTransit = true;
                            neighbor = m_scene.HaveNeighbor(Cardinals.NE, ref fix);
                        }
                        else
                        {
                            needsTransit = true;
                            neighbor = m_scene.HaveNeighbor(Cardinals.E, ref fix);
                        }
                    }
                    else if (m_scene.TestBorderCross(pos2, Cardinals.S))
                    {
                        needsTransit = true;
                        neighbor = m_scene.HaveNeighbor(Cardinals.S, ref fix);
                    }
                    else if (m_scene.TestBorderCross(pos2, Cardinals.N))
                    {
                        needsTransit = true;
                        neighbor = m_scene.HaveNeighbor(Cardinals.N, ref fix);
                    }

                    // Makes sure avatar does not end up outside region
                    if (neighbor <= 0)
                    {
                        if (needsTransit)
                        {
                            if (m_requestedSitTargetUUID == UUID.Zero)
                            {
                                bool isFlying = Flying;
                                RemoveFromPhysicalScene();

                                Vector3 pos = AbsolutePosition;
                                if (AbsolutePosition.X < 0)
                                    pos.X += Velocity.X * 2;
                                else if (AbsolutePosition.X > Constants.RegionSize)
                                    pos.X -= Velocity.X * 2;
                                if (AbsolutePosition.Y < 0)
                                    pos.Y += Velocity.Y * 2;
                                else if (AbsolutePosition.Y > Constants.RegionSize)
                                    pos.Y -= Velocity.Y * 2;
                                Velocity = Vector3.Zero;
                                AbsolutePosition = pos;

//                                m_log.DebugFormat("[SCENE PRESENCE]: Prevented flyoff for {0} at {1}", Name, AbsolutePosition);

                                AddToPhysicalScene(isFlying);
                            }
                        }
                    }
                    else if (neighbor > 0)
                    {
                        if (!CrossToNewRegion())
                        {
                            if (m_requestedSitTargetUUID == UUID.Zero)
                            {
                                bool isFlying = Flying;
                                RemoveFromPhysicalScene();

                                Vector3 pos = AbsolutePosition;
                                if (AbsolutePosition.X < 0)
                                    pos.X += Velocity.X * 2;
                                else if (AbsolutePosition.X > Constants.RegionSize)
                                    pos.X -= Velocity.X * 2;
                                if (AbsolutePosition.Y < 0)
                                    pos.Y += Velocity.Y * 2;
                                else if (AbsolutePosition.Y > Constants.RegionSize)
                                    pos.Y -= Velocity.Y * 2;
                                Velocity = Vector3.Zero;
                                AbsolutePosition = pos;

                                AddToPhysicalScene(isFlying);
                            }
                        }
                    }
                }
                else
                {
                    // This constant has been inferred from experimentation
                    // I'm not sure what this value should be, so I tried a few values.
                    timeStep = 0.04f;
                    pos2 = AbsolutePosition;
                    pos2.X = pos2.X + (vel.X * timeStep);
                    pos2.Y = pos2.Y + (vel.Y * timeStep);
                    // Don't touch the Z
                    m_pos = pos2;
                    m_log.DebugFormat("[SCENE PRESENCE]: In transit m_pos={0}", m_pos);
                }
            }   
        }

        /// <summary>
        /// Moves the agent outside the region bounds
        /// Tells neighbor region that we're crossing to it
        /// If the neighbor accepts, remove the agent's viewable avatar from this scene
        /// set them to a child agent.
        /// </summary>
        protected bool CrossToNewRegion()
        {
            try
            {
                return m_scene.CrossAgentToNewRegion(this, Flying);
            }
            catch
            {
                return m_scene.CrossAgentToNewRegion(this, false);
            }
        }

        public void RestoreInCurrentScene()
        {
            AddToPhysicalScene(false); // not exactly false
        }

        public void Reset()
        {
//            m_log.DebugFormat("[SCENE PRESENCE]: Resetting {0} in {1}", Name, Scene.RegionInfo.RegionName);

            // Put the child agent back at the center
            AbsolutePosition 
                = new Vector3(((float)Constants.RegionSize * 0.5f), ((float)Constants.RegionSize * 0.5f), 70);

            Animator.ResetAnimations();
        }

        /// <summary>
        /// Computes which child agents to close when the scene presence moves to another region.
        /// Removes those regions from m_knownRegions.
        /// </summary>
        /// <param name="newRegionX">The new region's x on the map</param>
        /// <param name="newRegionY">The new region's y on the map</param>
        /// <returns></returns>
        public void CloseChildAgents(uint newRegionX, uint newRegionY)
        {
            List<ulong> byebyeRegions = new List<ulong>();
            List<ulong> knownRegions = KnownRegionHandles;
            m_log.DebugFormat(
                "[SCENE PRESENCE]: Closing child agents. Checking {0} regions in {1}", 
                knownRegions.Count, Scene.RegionInfo.RegionName);
            //DumpKnownRegions();

            foreach (ulong handle in knownRegions)
            {
                // Don't close the agent on this region yet
                if (handle != Scene.RegionInfo.RegionHandle)
                {
                    uint x, y;
                    Utils.LongToUInts(handle, out x, out y);
                    x = x / Constants.RegionSize;
                    y = y / Constants.RegionSize;

//                    m_log.Debug("---> x: " + x + "; newx:" + newRegionX + "; Abs:" + (int)Math.Abs((int)(x - newRegionX)));
//                    m_log.Debug("---> y: " + y + "; newy:" + newRegionY + "; Abs:" + (int)Math.Abs((int)(y - newRegionY)));
                    if (Util.IsOutsideView(DrawDistance, x, newRegionX, y, newRegionY))
                    {
                        byebyeRegions.Add(handle);
                    }
                }
            }
            
            if (byebyeRegions.Count > 0)
            {
                m_log.Debug("[SCENE PRESENCE]: Closing " + byebyeRegions.Count + " child agents");
                Util.FireAndForget(delegate 
                { 
                    m_scene.SceneGridService.SendCloseChildAgentConnections(ControllingClient.AgentId, byebyeRegions); 
                });
            }
            
            foreach (ulong handle in byebyeRegions)
            {
                RemoveNeighbourRegion(handle);
            }
        }

        #endregion

        /// <summary>
        /// This allows the Sim owner the abiility to kick users from their sim currently.
        /// It tells the client that the agent has permission to do so.
        /// </summary>
        public void GrantGodlikePowers(UUID agentID, UUID sessionID, UUID token, bool godStatus)
        {
            if (godStatus)
            {
                // For now, assign god level 200 to anyone
                // who is granted god powers, but has no god level set.
                //
                UserAccount account = m_scene.UserAccountService.GetUserAccount(m_scene.RegionInfo.ScopeID, agentID);
                if (account != null)
                {
                    if (account.UserLevel > 0)
                        GodLevel = account.UserLevel;
                    else
                        GodLevel = 200;
                }
            }
            else
            {
                GodLevel = 0;
            }

            ControllingClient.SendAdminResponse(token, (uint)GodLevel);
        }

        #region Child Agent Updates

        public void ChildAgentDataUpdate(AgentData cAgentData)
        {
//            m_log.Debug("   >>> ChildAgentDataUpdate <<< " + Scene.RegionInfo.RegionName);
            if (!IsChildAgent)
                return;

            CopyFrom(cAgentData);
        }

        private static Vector3 marker = new Vector3(-1f, -1f, -1f);
        /// <summary>
        /// This updates important decision making data about a child agent
        /// The main purpose is to figure out what objects to send to a child agent that's in a neighboring region
        /// </summary>
        public void ChildAgentDataUpdate(AgentPosition cAgentData, uint tRegionX, uint tRegionY, uint rRegionX, uint rRegionY)
        {
            if (!IsChildAgent)
                return;

            //m_log.Debug("   >>> ChildAgentPositionUpdate <<< " + rRegionX + "-" + rRegionY);
            int shiftx = ((int)rRegionX - (int)tRegionX) * (int)Constants.RegionSize;
            int shifty = ((int)rRegionY - (int)tRegionY) * (int)Constants.RegionSize;

            Vector3 offset = new Vector3(shiftx, shifty, 0f);

            // When we get to the point of re-computing neighbors everytime this
            // changes, then start using the agent's drawdistance rather than the 
            // region's draw distance.
            // DrawDistance = cAgentData.Far;
            DrawDistance = Scene.DefaultDrawDistance;

            if (cAgentData.Position != marker) // UGH!!
                m_pos = cAgentData.Position + offset;

            if (Vector3.Distance(AbsolutePosition, posLastSignificantMove) >= Scene.ChildReprioritizationDistance)
            {
                posLastSignificantMove = AbsolutePosition;
                ReprioritizeUpdates();
            }

            CameraPosition = cAgentData.Center + offset;

            if ((cAgentData.Throttles != null) && cAgentData.Throttles.Length > 0)
                ControllingClient.SetChildAgentThrottle(cAgentData.Throttles);

            //cAgentData.AVHeight;
            RegionHandle = cAgentData.RegionHandle;
            //m_velocity = cAgentData.Velocity;
        }

        public void CopyTo(AgentData cAgent)
        {
            cAgent.CallbackURI = m_callbackURI;

            cAgent.AgentID = UUID;
            cAgent.RegionID = Scene.RegionInfo.RegionID;

            cAgent.Position = AbsolutePosition;
            cAgent.Velocity = m_velocity;
            cAgent.Center = CameraPosition;
            cAgent.AtAxis = CameraAtAxis;
            cAgent.LeftAxis = CameraLeftAxis;
            cAgent.UpAxis = CameraUpAxis;

            cAgent.Far = DrawDistance;

            // Throttles 
            float multiplier = 1;
            int childRegions = KnownRegionCount;
            if (childRegions != 0)
                multiplier = 1f / childRegions;

            // Minimum throttle for a child region is 1/4 of the root region throttle
            if (multiplier <= 0.25f)
                multiplier = 0.25f;

            cAgent.Throttles = ControllingClient.GetThrottlesPacked(multiplier);

            cAgent.HeadRotation = m_headrotation;
            cAgent.BodyRotation = Rotation;
            cAgent.ControlFlags = (uint)m_AgentControlFlags;

            if (m_scene.Permissions.IsGod(new UUID(cAgent.AgentID)))
                cAgent.GodLevel = (byte)GodLevel;
            else 
                cAgent.GodLevel = (byte) 0;

            cAgent.AlwaysRun = SetAlwaysRun;

            cAgent.Appearance = new AvatarAppearance(Appearance);
            
            lock (scriptedcontrols)
            {
                ControllerData[] controls = new ControllerData[scriptedcontrols.Count];
                int i = 0;

                foreach (ScriptControllers c in scriptedcontrols.Values)
                {
                    controls[i++] = new ControllerData(c.itemID, (uint)c.ignoreControls, (uint)c.eventControls);
                }
                cAgent.Controllers = controls;
            }

            // Animations
            try
            {
                cAgent.Anims = Animator.Animations.ToArray();
            }
            catch { }
            cAgent.DefaultAnim = Animator.Animations.DefaultAnimation;
            cAgent.AnimState = Animator.Animations.ImplicitDefaultAnimation;

            if (Scene.AttachmentsModule != null)
                Scene.AttachmentsModule.CopyAttachments(this, cAgent);
        }

        private void CopyFrom(AgentData cAgent)
        {
            m_originRegionID = cAgent.RegionID;

            m_callbackURI = cAgent.CallbackURI;
//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: Set callback for {0} in {1} to {2} in CopyFrom()",
//                Name, m_scene.RegionInfo.RegionName, m_callbackURI);

            m_pos = cAgent.Position;
            m_velocity = cAgent.Velocity;
            CameraPosition = cAgent.Center;
            CameraAtAxis = cAgent.AtAxis;
            CameraLeftAxis = cAgent.LeftAxis;
            CameraUpAxis = cAgent.UpAxis;

            // When we get to the point of re-computing neighbors everytime this
            // changes, then start using the agent's drawdistance rather than the 
            // region's draw distance.
            // DrawDistance = cAgent.Far;
            DrawDistance = Scene.DefaultDrawDistance;

            if ((cAgent.Throttles != null) && cAgent.Throttles.Length > 0)
                ControllingClient.SetChildAgentThrottle(cAgent.Throttles);

            m_headrotation = cAgent.HeadRotation;
            Rotation = cAgent.BodyRotation;
            m_AgentControlFlags = (AgentManager.ControlFlags)cAgent.ControlFlags; 

            if (m_scene.Permissions.IsGod(new UUID(cAgent.AgentID)))
                GodLevel = cAgent.GodLevel;
            SetAlwaysRun = cAgent.AlwaysRun;

            Appearance = new AvatarAppearance(cAgent.Appearance);
            if (PhysicsActor != null)
            {
                bool isFlying = Flying;
                RemoveFromPhysicalScene();
                AddToPhysicalScene(isFlying);
            }
            
            try
            {
                lock (scriptedcontrols)
                {
                    if (cAgent.Controllers != null)
                    {
                        scriptedcontrols.Clear();

                        foreach (ControllerData c in cAgent.Controllers)
                        {
                            ScriptControllers sc = new ScriptControllers();
                            sc.itemID = c.ItemID;
                            sc.ignoreControls = (ScriptControlled)c.IgnoreControls;
                            sc.eventControls = (ScriptControlled)c.EventControls;

                            scriptedcontrols[sc.itemID] = sc;
                        }
                    }
                }
            }
            catch { }

            // FIXME: Why is this null check necessary?  Where are the cases where we get a null Anims object?
            if (cAgent.Anims != null)
                Animator.Animations.FromArray(cAgent.Anims);
            if (cAgent.DefaultAnim != null)
                Animator.Animations.SetDefaultAnimation(cAgent.DefaultAnim.AnimID, cAgent.DefaultAnim.SequenceNum, UUID.Zero);
            if (cAgent.AnimState != null)
                Animator.Animations.SetImplicitDefaultAnimation(cAgent.AnimState.AnimID, cAgent.AnimState.SequenceNum, UUID.Zero);

            if (Scene.AttachmentsModule != null)
                Scene.AttachmentsModule.CopyAttachments(cAgent, this);
        }

        public bool CopyAgent(out IAgentData agent)
        {
            agent = new CompleteAgentData();
            CopyTo((AgentData)agent);
            return true;
        }

        #endregion Child Agent Updates

        /// <summary>
        /// Handles part of the PID controller function for moving an avatar.
        /// </summary>
        public void UpdateMovement()
        {
            if (m_forceToApply.HasValue)
            {
                Vector3 force = m_forceToApply.Value;

                Updated = true;

                Velocity = force;

                m_forceToApply = null;
                TriggerScenePresenceUpdated();
            }
        }

        /// <summary>
        /// Adds a physical representation of the avatar to the Physics plugin
        /// </summary>
        public void AddToPhysicalScene(bool isFlying)
        {
//            m_log.DebugFormat(
//                "[SCENE PRESENCE]: Adding physics actor for {0}, ifFlying = {1} in {2}",
//                Name, isFlying, Scene.RegionInfo.RegionName);

            if (PhysicsActor != null)
            {
                m_log.ErrorFormat(
                    "[SCENE PRESENCE]: Adding physics actor for {0} to {1} but this scene presence already has a physics actor",
                    Name, Scene.RegionInfo.RegionName);
            }

            if (Appearance.AvatarHeight == 0)
                Appearance.SetHeight();

            PhysicsScene scene = m_scene.PhysicsScene;

            Vector3 pVec = AbsolutePosition;

            PhysicsActor = scene.AddAvatar(
                LocalId, Firstname + "." + Lastname, pVec,
                new Vector3(0f, 0f, Appearance.AvatarHeight), isFlying);

            //PhysicsActor.OnRequestTerseUpdate += SendTerseUpdateToAllClients;
            PhysicsActor.OnCollisionUpdate += PhysicsCollisionUpdate;
            PhysicsActor.OnOutOfBounds += OutOfBoundsCall; // Called for PhysicsActors when there's something wrong
            PhysicsActor.SubscribeEvents(500);
            PhysicsActor.LocalID = LocalId;
        }

        private void OutOfBoundsCall(Vector3 pos)
        {
            //bool flying = Flying;
            //RemoveFromPhysicalScene();

            //AddToPhysicalScene(flying);
            if (ControllingClient != null)
                ControllingClient.SendAgentAlertMessage("Physics is having a problem with your avatar.  You may not be able to move until you relog.", true);
        }

        /// <summary>
        /// Event called by the physics plugin to tell the avatar about a collision.
        /// </summary>
        /// <remarks>
        /// This function is called continuously, even when there are no collisions.  If the avatar is walking on the
        /// ground or a prim then there will be collision information between the avatar and the surface.
        ///
        /// FIXME: However, we can't safely avoid calling this yet where there are no collisions without analyzing whether
        /// any part of this method is relying on an every-frame call.
        /// </remarks>
        /// <param name="e"></param>
        public void PhysicsCollisionUpdate(EventArgs e)
        {
            if (IsChildAgent)
                return;
            
            //if ((Math.Abs(Velocity.X) > 0.1e-9f) || (Math.Abs(Velocity.Y) > 0.1e-9f))
            // The Physics Scene will send updates every 500 ms grep: PhysicsActor.SubscribeEvents(
            // as of this comment the interval is set in AddToPhysicalScene

//                if (m_updateCount > 0)
//                {
            Animator.UpdateMovementAnimations();
//                    m_updateCount--;
//                }

            CollisionEventUpdate collisionData = (CollisionEventUpdate)e;
            Dictionary<uint, ContactPoint> coldata = collisionData.m_objCollisionList;

            CollisionPlane = Vector4.UnitW;

//            // No collisions at all means we may be flying. Update always
//            // to make falling work
//            if (m_lastColCount != coldata.Count || coldata.Count == 0)
//            {
//                m_updateCount = UPDATE_COUNT;
//                m_lastColCount = coldata.Count;
//            }

            if (coldata.Count != 0)
            {
                switch (Animator.CurrentMovementAnimation)
                {
                    case "STAND":
                    case "WALK":
                    case "RUN":
                    case "CROUCH":
                    case "CROUCHWALK":
                        {
                            ContactPoint lowest;
                            lowest.SurfaceNormal = Vector3.Zero;
                            lowest.Position = Vector3.Zero;
                            lowest.Position.Z = Single.NaN;

                            foreach (ContactPoint contact in coldata.Values)
                            {
                                if (Single.IsNaN(lowest.Position.Z) || contact.Position.Z < lowest.Position.Z)
                                {
                                    lowest = contact;
                                }
                            }

                            CollisionPlane = new Vector4(-lowest.SurfaceNormal, -Vector3.Dot(lowest.Position, lowest.SurfaceNormal));
                        }
                        break;
                }
            }

            // Gods do not take damage and Invulnerable is set depending on parcel/region flags
            if (Invulnerable || GodLevel > 0)
                return;

            // The following may be better in the ICombatModule
            // probably tweaking of the values for ground and normal prim collisions will be needed
            float starthealth = Health;
            uint killerObj = 0;
            SceneObjectPart part = null;
            foreach (uint localid in coldata.Keys)
            {
                if (localid == 0)
                {
                    part = null;
                }
                else
                {
                    part = Scene.GetSceneObjectPart(localid);
                }
                if (part != null)
                {
                    // Ignore if it has been deleted or volume detect
                    if (!part.ParentGroup.IsDeleted && !part.ParentGroup.IsVolumeDetect)
                    {
                        if (part.ParentGroup.Damage > 0.0f)
                        {
                            // Something with damage...
                            Health -= part.ParentGroup.Damage;
                            part.ParentGroup.Scene.DeleteSceneObject(part.ParentGroup, false);
                        }
                        else
                        {
                            // An ordinary prim
                            if (coldata[localid].PenetrationDepth >= 0.10f)
                                Health -= coldata[localid].PenetrationDepth * 5.0f;
                        }
                    }
                }
                else
                {
                    // 0 is the ground
                    // what about collisions with other avatars?
                    if (localid == 0 && coldata[localid].PenetrationDepth >= 0.10f)
                        Health -= coldata[localid].PenetrationDepth * 5.0f;
                }


                if (Health <= 0.0f)
                {
                    if (localid != 0)
                        killerObj = localid;
                }
                //m_log.Debug("[AVATAR]: Collision with localid: " + localid.ToString() + " at depth: " + coldata[localid].ToString());
            }
            //Health = 100;
            if (!Invulnerable)
            {
                if (starthealth != Health)
                {
                    ControllingClient.SendHealth(Health);
                }
                if (Health <= 0)
                {
                    m_scene.EventManager.TriggerAvatarKill(killerObj, this);
                }
                if (starthealth == Health && Health < 100.0f)
                {
                    Health += 0.03f;
                    if (Health > 100.0f)
                        Health = 100.0f;
                    ControllingClient.SendHealth(Health);
                }
            }
        }

        public void setHealthWithUpdate(float health)
        {
            Health = health;
            ControllingClient.SendHealth(Health);
        }

        protected internal void Close()
        {
            // Clear known regions
            KnownRegions = new Dictionary<ulong, string>();

            lock (m_reprioritization_timer)
            {
                m_reprioritization_timer.Enabled = false;
                m_reprioritization_timer.Elapsed -= new ElapsedEventHandler(Reprioritize);
            }
            
            // I don't get it but mono crashes when you try to dispose of this timer,
            // unsetting the elapsed callback should be enough to allow for cleanup however.
            // m_reprioritizationTimer.Dispose(); 

            RemoveFromPhysicalScene();
        }

        public void AddAttachment(SceneObjectGroup gobj)
        {
            lock (m_attachments)
            {
                // This may be true when the attachment comes back
                // from serialization after login. Clear it.
                gobj.IsDeleted = false;

                m_attachments.Add(gobj);
            }
        }

        /// <summary>
        /// Get all the presence's attachments.
        /// </summary>
        /// <returns>A copy of the list which contains the attachments.</returns>
        public List<SceneObjectGroup> GetAttachments()
        {
            lock (m_attachments)
                return new List<SceneObjectGroup>(m_attachments);
        }

        /// <summary>
        /// Get the scene objects attached to the given point.
        /// </summary>
        /// <param name="attachmentPoint"></param>
        /// <returns>Returns an empty list if there were no attachments at the point.</returns>
        public List<SceneObjectGroup> GetAttachments(uint attachmentPoint)
        {
            List<SceneObjectGroup> attachments = new List<SceneObjectGroup>();

            if (attachmentPoint >= 0)
            {
                lock (m_attachments)
                {
                    foreach (SceneObjectGroup so in m_attachments)
                    {
                        if (attachmentPoint == so.AttachmentPoint)
                            attachments.Add(so);
                    }
                }
            }
            
            return attachments;
        }

        public bool HasAttachments()
        {
            lock (m_attachments)
                return m_attachments.Count > 0;
        }

        /// <summary>
        /// Returns the total count of scripts in all parts inventories.
        /// </summary>
        public int ScriptCount()
        {
            int count = 0;
            lock (m_attachments)
            {
                foreach (SceneObjectGroup gobj in m_attachments)
                {
                    if (gobj != null)
                    {
                        count += gobj.ScriptCount();
                    }
                }
            }
            return count;
        }

        /// <summary>
        /// A float the value is a representative execution time in milliseconds of all scripts in all attachments.
        /// </summary>
        public float ScriptExecutionTime()
        {
            float time = 0.0f;
            lock (m_attachments)
            {
                foreach (SceneObjectGroup gobj in m_attachments)
                {
                    if (gobj != null)
                    {
                        time += gobj.ScriptExecutionTime();
                    }
                }
            }
            return time;
        }

        /// <summary>
        /// Returns the total count of running scripts in all parts.
        /// </summary>
        public int RunningScriptCount()
        {
            int count = 0;
            lock (m_attachments)
            {
                foreach (SceneObjectGroup gobj in m_attachments)
                {
                    if (gobj != null)
                    {
                        count += gobj.RunningScriptCount();
                    }
                }
            }
            return count;
        }

        public bool HasScriptedAttachments()
        {
            lock (m_attachments)
            {
                foreach (SceneObjectGroup gobj in m_attachments)
                {
                    if (gobj != null)
                    {
                        if (gobj.RootPart.Inventory.ContainsScripts())
                            return true;
                    }
                }
            }
            return false;
        }

        public void RemoveAttachment(SceneObjectGroup gobj)
        {
            lock (m_attachments)
                m_attachments.Remove(gobj);
        }

        /// <summary>
        /// Clear all attachments
        /// </summary>
        public void ClearAttachments()
        {
            lock (m_attachments)
                m_attachments.Clear();
        }

        /// <summary>
        /// This is currently just being done for information.
        /// </summary>
        public bool ValidateAttachments()
        {
            bool validated = true;

            lock (m_attachments)
            {
                // Validate
                foreach (SceneObjectGroup gobj in m_attachments)
                {
                    if (gobj == null)
                    {
                        m_log.WarnFormat(
                            "[SCENE PRESENCE]: Failed to validate an attachment for {0} since it was null.  Continuing", Name);

                        validated = false;
                    }
                    else if (gobj.IsDeleted)
                    {
                        m_log.WarnFormat(
                            "[SCENE PRESENCE]: Failed to validate attachment {0} {1} for {2} since it had been deleted.  Continuing",
                            gobj.Name, gobj.UUID, Name);

                        validated = false;
                    }
                }
            }

            return validated;
        }

        /// <summary>
        /// Send a script event to this scene presence's attachments
        /// </summary>
        /// <param name="eventName">The name of the event</param>
        /// <param name="args">The arguments for the event</param>
        public void SendScriptEventToAttachments(string eventName, Object[] args)
        {
            Util.FireAndForget(delegate(object x)
            {
                if (m_scriptEngines.Length == 0)
                    return;

                lock (m_attachments)
                {
                    foreach (SceneObjectGroup grp in m_attachments)
                    {
                        // 16384 is CHANGED_ANIMATION
                        //
                        // Send this to all attachment root prims
                        //
                        foreach (IScriptModule m in m_scriptEngines)
                        {
                            if (m == null) // No script engine loaded
                                continue;

                            m.PostObjectEvent(grp.RootPart.UUID, "changed", new Object[] { (int)Changed.ANIMATION });
                        }
                    }
                }
            });
        }

        /// <summary>
        /// Gets the mass.
        /// </summary>
        /// <returns>
        /// The mass.
        /// </returns>
        public float GetMass()
        {
            PhysicsActor pa = PhysicsActor;

            if (pa != null)
                return pa.Mass;
            else
                return 0;
        }

        internal void PushForce(Vector3 impulse)
        {
            if (PhysicsActor != null)
            {
                PhysicsActor.AddForce(impulse,true);
            }
        }

        public void RegisterControlEventsToScript(int controls, int accept, int pass_on, uint Obj_localID, UUID Script_item_UUID)
        {
            ScriptControllers obj = new ScriptControllers();
            obj.ignoreControls = ScriptControlled.CONTROL_ZERO;
            obj.eventControls = ScriptControlled.CONTROL_ZERO;

            obj.itemID = Script_item_UUID;
            if (pass_on == 0 && accept == 0)
            {
                IgnoredControls |= (ScriptControlled)controls;
                obj.ignoreControls = (ScriptControlled)controls;
            }

            if (pass_on == 0 && accept == 1)
            {
                IgnoredControls |= (ScriptControlled)controls;
                obj.ignoreControls = (ScriptControlled)controls;
                obj.eventControls = (ScriptControlled)controls;
            }

            if (pass_on == 1 && accept == 1)
            {
                IgnoredControls = ScriptControlled.CONTROL_ZERO;
                obj.eventControls = (ScriptControlled)controls;
                obj.ignoreControls = ScriptControlled.CONTROL_ZERO;
            }

            lock (scriptedcontrols)
            {
                if (pass_on == 1 && accept == 0)
                {
                    IgnoredControls &= ~(ScriptControlled)controls;
                    if (scriptedcontrols.ContainsKey(Script_item_UUID))
                        scriptedcontrols.Remove(Script_item_UUID);
                }
                else
                {
                    scriptedcontrols[Script_item_UUID] = obj;
                }
            }

            ControllingClient.SendTakeControls(controls, pass_on == 1 ? true : false, true);
        }

        public void HandleForceReleaseControls(IClientAPI remoteClient, UUID agentID)
        {
            IgnoredControls = ScriptControlled.CONTROL_ZERO;
            lock (scriptedcontrols)
            {
                scriptedcontrols.Clear();
            }
            ControllingClient.SendTakeControls(int.MaxValue, false, false);
        }

        public void UnRegisterControlEventsToScript(uint Obj_localID, UUID Script_item_UUID)
        {
            ScriptControllers takecontrols;

            lock (scriptedcontrols)
            {
                if (scriptedcontrols.TryGetValue(Script_item_UUID, out takecontrols))
                {
                    ScriptControlled sctc = takecontrols.eventControls;

                    ControllingClient.SendTakeControls((int)sctc, false, false);
                    ControllingClient.SendTakeControls((int)sctc, true, false);

                    scriptedcontrols.Remove(Script_item_UUID);
                    IgnoredControls = ScriptControlled.CONTROL_ZERO;
                    foreach (ScriptControllers scData in scriptedcontrols.Values)
                    {
                        IgnoredControls |= scData.ignoreControls;
                    }
                }
            }
        }

        private void SendControlsToScripts(uint flags)
        {
            // Notify the scripts only after calling UpdateMovementAnimations(), so that if a script
            // (e.g., a walking script) checks which animation is active it will be the correct animation.
            lock (scriptedcontrols)
            {
                if (scriptedcontrols.Count <= 0)
                    return;

                ScriptControlled allflags = ScriptControlled.CONTROL_ZERO;
    
                if (MouseDown)
                {
                    allflags = LastCommands & (ScriptControlled.CONTROL_ML_LBUTTON | ScriptControlled.CONTROL_LBUTTON);
                    if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_LBUTTON_UP) != 0 || (flags & unchecked((uint)AgentManager.ControlFlags.AGENT_CONTROL_ML_LBUTTON_UP)) != 0)
                    {
                        allflags = ScriptControlled.CONTROL_ZERO;
                        MouseDown = true;
                    }
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_ML_LBUTTON_DOWN) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_ML_LBUTTON;
                    MouseDown = true;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_LBUTTON_DOWN) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_LBUTTON;
                    MouseDown = true;
                }
    
                // find all activated controls, whether the scripts are interested in them or not
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_AT_POS) != 0 || (flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_AT_POS) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_FWD;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_AT_NEG) != 0 || (flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_AT_NEG) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_BACK;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_UP_POS) != 0 || (flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_POS) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_UP;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_UP_NEG) != 0 || (flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_NEG) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_DOWN;
                }

                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_LEFT_POS) != 0 || (flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_LEFT_POS) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_LEFT;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_LEFT_NEG) != 0 || (flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_LEFT_NEG) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_RIGHT;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_YAW_NEG) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_ROT_RIGHT;
                }
    
                if ((flags & (uint)AgentManager.ControlFlags.AGENT_CONTROL_YAW_POS) != 0)
                {
                    allflags |= ScriptControlled.CONTROL_ROT_LEFT;
                }

                // optimization; we have to check per script, but if nothing is pressed and nothing changed, we can skip that
                if (allflags != ScriptControlled.CONTROL_ZERO || allflags != LastCommands)
                {
                    foreach (KeyValuePair<UUID, ScriptControllers> kvp in scriptedcontrols)
                    {
                        UUID scriptUUID = kvp.Key;
                        ScriptControllers scriptControlData = kvp.Value;
    
                        ScriptControlled localHeld = allflags & scriptControlData.eventControls;     // the flags interesting for us
                        ScriptControlled localLast = LastCommands & scriptControlData.eventControls; // the activated controls in the last cycle
                        ScriptControlled localChange = localHeld ^ localLast;                        // the changed bits

                        if (localHeld != ScriptControlled.CONTROL_ZERO || localChange != ScriptControlled.CONTROL_ZERO)
                        {
                            // only send if still pressed or just changed
                            m_scene.EventManager.TriggerControlEvent(scriptUUID, UUID, (uint)localHeld, (uint)localChange);
                        }
                    }
                }
    
                LastCommands = allflags;
            }
        }

        internal static AgentManager.ControlFlags RemoveIgnoredControls(AgentManager.ControlFlags flags, ScriptControlled ignored)
        {
            if (ignored == ScriptControlled.CONTROL_ZERO)
                return flags;

            if ((ignored & ScriptControlled.CONTROL_BACK) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_AT_NEG | AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_AT_NEG);
            if ((ignored & ScriptControlled.CONTROL_FWD) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_AT_POS | AgentManager.ControlFlags.AGENT_CONTROL_AT_POS);
            if ((ignored & ScriptControlled.CONTROL_DOWN) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_UP_NEG | AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_NEG);
            if ((ignored & ScriptControlled.CONTROL_UP) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_POS | AgentManager.ControlFlags.AGENT_CONTROL_UP_POS);
            if ((ignored & ScriptControlled.CONTROL_LEFT) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_LEFT_POS | AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_LEFT_POS);
            if ((ignored & ScriptControlled.CONTROL_RIGHT) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_LEFT_NEG | AgentManager.ControlFlags.AGENT_CONTROL_LEFT_NEG);
            if ((ignored & ScriptControlled.CONTROL_ROT_LEFT) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_YAW_NEG);
            if ((ignored & ScriptControlled.CONTROL_ROT_RIGHT) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_YAW_POS);
            if ((ignored & ScriptControlled.CONTROL_ML_LBUTTON) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_ML_LBUTTON_DOWN);
            if ((ignored & ScriptControlled.CONTROL_LBUTTON) != 0)
                flags &= ~(AgentManager.ControlFlags.AGENT_CONTROL_LBUTTON_UP | AgentManager.ControlFlags.AGENT_CONTROL_LBUTTON_DOWN);

            //DIR_CONTROL_FLAG_FORWARD = AgentManager.ControlFlags.AGENT_CONTROL_AT_POS,
            //DIR_CONTROL_FLAG_BACK = AgentManager.ControlFlags.AGENT_CONTROL_AT_NEG,
            //DIR_CONTROL_FLAG_LEFT = AgentManager.ControlFlags.AGENT_CONTROL_LEFT_POS,
            //DIR_CONTROL_FLAG_RIGHT = AgentManager.ControlFlags.AGENT_CONTROL_LEFT_NEG,
            //DIR_CONTROL_FLAG_UP = AgentManager.ControlFlags.AGENT_CONTROL_UP_POS,
            //DIR_CONTROL_FLAG_DOWN = AgentManager.ControlFlags.AGENT_CONTROL_UP_NEG,
            //DIR_CONTROL_FLAG_DOWN_NUDGE = AgentManager.ControlFlags.AGENT_CONTROL_NUDGE_UP_NEG

            return flags;
        }

        private void ReprioritizeUpdates()
        {
            if (Scene.IsReprioritizationEnabled && Scene.UpdatePrioritizationScheme != UpdatePrioritizationSchemes.Time)
            {
                lock (m_reprioritization_timer)
                {
                    if (!m_reprioritizing)
                        m_reprioritization_timer.Enabled = m_reprioritizing = true;
                    else
                        m_reprioritization_called = true;
                }
            }
        }

        private void Reprioritize(object sender, ElapsedEventArgs e)
        {
            ControllingClient.ReprioritizeUpdates();

            lock (m_reprioritization_timer)
            {
                m_reprioritization_timer.Enabled = m_reprioritizing = m_reprioritization_called;
                m_reprioritization_called = false;
            }
        }

        private void CheckLandingPoint(ref Vector3 pos)
        {
            // Never constrain lures
            if ((TeleportFlags & TeleportFlags.ViaLure) != 0)
                return;

            if (m_scene.RegionInfo.EstateSettings.AllowDirectTeleport)
                return;

            ILandObject land = m_scene.LandChannel.GetLandObject(pos.X, pos.Y);

            if (land.LandData.LandingType == (byte)LandingType.LandingPoint &&
                land.LandData.UserLocation != Vector3.Zero &&
                land.LandData.OwnerID != m_uuid &&
                (!m_scene.Permissions.IsGod(m_uuid)) &&
                (!m_scene.RegionInfo.EstateSettings.IsEstateManagerOrOwner(m_uuid)))
            {
                float curr = Vector3.Distance(AbsolutePosition, pos);
                if (Vector3.Distance(land.LandData.UserLocation, pos) < curr)
                    pos = land.LandData.UserLocation;
                else
                    ControllingClient.SendAlertMessage("Can't teleport closer to destination");
            }
        }

        private void CheckAndAdjustTelehub(SceneObjectGroup telehub, ref Vector3 pos)
        {
            if ((m_teleportFlags & (TeleportFlags.ViaLogin | TeleportFlags.ViaRegionID)) ==
                (TeleportFlags.ViaLogin | TeleportFlags.ViaRegionID) ||
                (m_scene.TelehubAllowLandmarks == true ? false : ((m_teleportFlags & TeleportFlags.ViaLandmark) != 0 )) ||
                (m_teleportFlags & TeleportFlags.ViaLocation) != 0 ||
                (m_teleportFlags & Constants.TeleportFlags.ViaHGLogin) != 0)
            {
                if (GodLevel < 200 &&
                    ((!m_scene.Permissions.IsGod(m_uuid) &&
                    !m_scene.RegionInfo.EstateSettings.IsEstateManagerOrOwner(m_uuid)) || 
                    (m_teleportFlags & TeleportFlags.ViaLocation) != 0 ||
                    (m_teleportFlags & Constants.TeleportFlags.ViaHGLogin) != 0))
                {
                    SpawnPoint[] spawnPoints = m_scene.RegionInfo.RegionSettings.SpawnPoints().ToArray();
                    if (spawnPoints.Length == 0)
                        return;

                    int index;
                    bool selected = false;

                    switch (m_scene.SpawnPointRouting)
                    {
                        case "random":

                            do
                            {
                                index = Util.RandomClass.Next(spawnPoints.Length - 1);
                                
                                Vector3 spawnPosition = spawnPoints[index].GetLocation(
                                    telehub.AbsolutePosition,
                                    telehub.GroupRotation
                                );
                                // SpawnPoint sp = spawnPoints[index];

                                ILandObject land = m_scene.LandChannel.GetLandObject(spawnPosition.X, spawnPosition.Y);
                                if (land == null || land.IsEitherBannedOrRestricted(UUID))
                                    selected = false;
                                else
                                    selected = true;

                            } while ( selected == false);

                            pos = spawnPoints[index].GetLocation(
                                telehub.AbsolutePosition,
                                telehub.GroupRotation
                            );
                            return;

                        case "sequence":

                            do
                            {
                                index = m_scene.SpawnPoint();
                                
                                Vector3 spawnPosition = spawnPoints[index].GetLocation(
                                    telehub.AbsolutePosition,
                                    telehub.GroupRotation
                                );
                                // SpawnPoint sp = spawnPoints[index];

                                ILandObject land = m_scene.LandChannel.GetLandObject(spawnPosition.X, spawnPosition.Y);
                                if (land == null || land.IsEitherBannedOrRestricted(UUID))
                                    selected = false;
                                else
                                    selected = true;

                            } while (selected == false);

                            pos = spawnPoints[index].GetLocation(telehub.AbsolutePosition, telehub.GroupRotation);
                            ;
                            return;

                        default:
                        case "closest":

                            float distance = 9999;
                            int closest = -1;
        
                            for (int i = 0; i < spawnPoints.Length; i++)
                            {
                                Vector3 spawnPosition = spawnPoints[i].GetLocation(
                                    telehub.AbsolutePosition,
                                    telehub.GroupRotation
                                );
                                Vector3 offset = spawnPosition - pos;
                                float d = Vector3.Mag(offset);
                                if (d >= distance)
                                    continue;
                                ILandObject land = m_scene.LandChannel.GetLandObject(spawnPosition.X, spawnPosition.Y);
                                if (land == null)
                                    continue;
                                if (land.IsEitherBannedOrRestricted(UUID))
                                    continue;
                                distance = d;
                                closest = i;
                            }
                            if (closest == -1)
                                return;
                            
                            pos = spawnPoints[closest].GetLocation(telehub.AbsolutePosition, telehub.GroupRotation);
                            return;

                    }
                }
            }
        }

        private void CheckAndAdjustLandingPoint(ref Vector3 pos)
        {
            SceneObjectGroup telehub = null;
            if (m_scene.RegionInfo.RegionSettings.TelehubObject != UUID.Zero && (telehub = m_scene.GetSceneObjectGroup(m_scene.RegionInfo.RegionSettings.TelehubObject)) != null)
            {
                if (!m_scene.RegionInfo.EstateSettings.AllowDirectTeleport)
                {
                    CheckAndAdjustTelehub(telehub, ref pos);
                    return;
                }
            }

            ILandObject land = m_scene.LandChannel.GetLandObject(pos.X, pos.Y);
            if (land != null)
            {
                if (Scene.DebugTeleporting)
                    TeleportFlagsDebug();

                // If we come in via login, landmark or map, we want to
                // honor landing points. If we come in via Lure, we want
                // to ignore them.
                if ((m_teleportFlags & (TeleportFlags.ViaLogin | TeleportFlags.ViaRegionID)) ==
                    (TeleportFlags.ViaLogin | TeleportFlags.ViaRegionID) ||
                    (m_teleportFlags & TeleportFlags.ViaLandmark) != 0 ||
                    (m_teleportFlags & TeleportFlags.ViaLocation) != 0 ||
                    (m_teleportFlags & Constants.TeleportFlags.ViaHGLogin) != 0)
                {
                    // Don't restrict gods, estate managers, or land owners to
                    // the TP point. This behaviour mimics agni.
                    if (land.LandData.LandingType == (byte)LandingType.LandingPoint &&
                        land.LandData.UserLocation != Vector3.Zero &&
                        GodLevel < 200 &&
                        ((land.LandData.OwnerID != m_uuid && 
                          !m_scene.Permissions.IsGod(m_uuid) &&
                          !m_scene.RegionInfo.EstateSettings.IsEstateManagerOrOwner(m_uuid)) || 
                         (m_teleportFlags & TeleportFlags.ViaLocation) != 0 ||
                         (m_teleportFlags & Constants.TeleportFlags.ViaHGLogin) != 0))
                    {
                        pos = land.LandData.UserLocation;
                    }
                }

                land.SendLandUpdateToClient(ControllingClient);
            }
        }

        private void TeleportFlagsDebug() {
    
            // Some temporary debugging help to show all the TeleportFlags we have...
            bool HG = false;
            if((m_teleportFlags & TeleportFlags.ViaHGLogin) == TeleportFlags.ViaHGLogin)
                HG = true;
    
            m_log.InfoFormat("[SCENE PRESENCE]: TELEPORT ******************");
    
            uint i = 0u;
            for (int x = 0; x <= 30 ; x++, i = 1u << x)
            {
                i = 1u << x;
    
                if((m_teleportFlags & (TeleportFlags)i) == (TeleportFlags)i)
                    if (HG == false)
                        m_log.InfoFormat("[SCENE PRESENCE]: Teleport Flags include {0}", ((TeleportFlags) i).ToString());
                    else
                        m_log.InfoFormat("[SCENE PRESENCE]: HG Teleport Flags include {0}", ((TeleportFlags)i).ToString());
            }
    
            m_log.InfoFormat("[SCENE PRESENCE]: TELEPORT ******************");
    
        }

    }
}