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
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Mon, 4 May 2020 10:06:24 -0700
Subject: [PATCH] Highly optimise single and multi-AABB VoxelShapes and
collisions
diff --git a/src/main/java/io/papermc/paper/util/CachedLists.java b/src/main/java/io/papermc/paper/util/CachedLists.java
index be668387f65a633c6ac497fca632a4767a1bf3a2..e08f4e39db4ee3fed62e37364d17dcc5c5683504 100644
--- a/src/main/java/io/papermc/paper/util/CachedLists.java
+++ b/src/main/java/io/papermc/paper/util/CachedLists.java
@@ -1,8 +1,57 @@
package io.papermc.paper.util;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.phys.AABB;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.util.UnsafeList;
+import java.util.List;
+
public final class CachedLists {
- public static void reset() {
+ // Paper start - optimise collisions
+ static final UnsafeList<AABB> TEMP_COLLISION_LIST = new UnsafeList<>(1024);
+ static boolean tempCollisionListInUse;
+
+ public static UnsafeList<AABB> getTempCollisionList() {
+ if (!Bukkit.isPrimaryThread() || tempCollisionListInUse) {
+ return new UnsafeList<>(16);
+ }
+ tempCollisionListInUse = true;
+ return TEMP_COLLISION_LIST;
+ }
+
+ public static void returnTempCollisionList(List<AABB> list) {
+ if (list != TEMP_COLLISION_LIST) {
+ return;
+ }
+ ((UnsafeList)list).setSize(0);
+ tempCollisionListInUse = false;
+ }
+ static final UnsafeList<Entity> TEMP_GET_ENTITIES_LIST = new UnsafeList<>(1024);
+ static boolean tempGetEntitiesListInUse;
+
+ public static UnsafeList<Entity> getTempGetEntitiesList() {
+ if (!Bukkit.isPrimaryThread() || tempGetEntitiesListInUse) {
+ return new UnsafeList<>(16);
+ }
+ tempGetEntitiesListInUse = true;
+ return TEMP_GET_ENTITIES_LIST;
+ }
+
+ public static void returnTempGetEntitiesList(List<Entity> list) {
+ if (list != TEMP_GET_ENTITIES_LIST) {
+ return;
+ }
+ ((UnsafeList)list).setSize(0);
+ tempGetEntitiesListInUse = false;
+ }
+ // Paper end - optimise collisions
+
+ public static void reset() {
+ // Paper start - optimise collisions
+ TEMP_COLLISION_LIST.completeReset();
+ TEMP_GET_ENTITIES_LIST.completeReset();
+ // Paper end - optimise collisions
}
}
diff --git a/src/main/java/io/papermc/paper/util/CollisionUtil.java b/src/main/java/io/papermc/paper/util/CollisionUtil.java
new file mode 100644
index 0000000000000000000000000000000000000000..58629451977c89db2fa895bde946135784a0d8bc
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/CollisionUtil.java
@@ -0,0 +1,639 @@
+package io.papermc.paper.util;
+
+import io.papermc.paper.voxel.AABBVoxelShape;
+import net.minecraft.core.BlockPos;
+import net.minecraft.server.level.ServerChunkCache;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.WorldGenRegion;
+import net.minecraft.util.Mth;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.level.CollisionGetter;
+import net.minecraft.world.level.EntityGetter;
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.border.WorldBorder;
+import net.minecraft.world.level.chunk.ChunkAccess;
+import net.minecraft.world.level.chunk.LevelChunkSection;
+import net.minecraft.world.level.material.FlowingFluid;
+import net.minecraft.world.level.material.FluidState;
+import net.minecraft.world.phys.AABB;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.phys.shapes.ArrayVoxelShape;
+import net.minecraft.world.phys.shapes.CollisionContext;
+import net.minecraft.world.phys.shapes.EntityCollisionContext;
+import net.minecraft.world.phys.shapes.Shapes;
+import net.minecraft.world.phys.shapes.VoxelShape;
+import java.util.List;
+import java.util.Optional;
+import java.util.function.BiPredicate;
+import java.util.function.Predicate;
+
+public final class CollisionUtil {
+
+ public static final double COLLISION_EPSILON = 1.0E-7;
+
+ public static boolean isEmpty(final AABB aabb) {
+ return (aabb.maxX - aabb.minX) < COLLISION_EPSILON && (aabb.maxY - aabb.minY) < COLLISION_EPSILON && (aabb.maxZ - aabb.minZ) < COLLISION_EPSILON;
+ }
+
+ public static boolean isEmpty(final double minX, final double minY, final double minZ,
+ final double maxX, final double maxY, final double maxZ) {
+ return (maxX - minX) < COLLISION_EPSILON && (maxY - minY) < COLLISION_EPSILON && (maxZ - minZ) < COLLISION_EPSILON;
+ }
+
+ public static AABB getBoxForChunk(final int chunkX, final int chunkZ) {
+ double x = (double)(chunkX << 4);
+ double z = (double)(chunkZ << 4);
+ // use a bounding box bigger than the chunk to prevent entities from entering it on move
+ return new AABB(x - 3*COLLISION_EPSILON, Double.NEGATIVE_INFINITY, z - 3*COLLISION_EPSILON,
+ x + (16.0 + 3*COLLISION_EPSILON), Double.POSITIVE_INFINITY, z + (16.0 + 3*COLLISION_EPSILON), false);
+ }
+
+ /*
+ A couple of rules for VoxelShape collisions:
+ Two shapes only intersect if they are actually more than EPSILON units into each other. This also applies to movement
+ checks.
+ If the two shapes strictly collide, then the return value of a collide call will return a value in the opposite
+ direction of the source move. However, this value will not be greater in magnitude than EPSILON. Collision code
+ will automatically round it to 0.
+ */
+
+ public static boolean voxelShapeIntersect(final double minX1, final double minY1, final double minZ1, final double maxX1,
+ final double maxY1, final double maxZ1, final double minX2, final double minY2,
+ final double minZ2, final double maxX2, final double maxY2, final double maxZ2) {
+ return (minX1 - maxX2) < -COLLISION_EPSILON && (maxX1 - minX2) > COLLISION_EPSILON &&
+ (minY1 - maxY2) < -COLLISION_EPSILON && (maxY1 - minY2) > COLLISION_EPSILON &&
+ (minZ1 - maxZ2) < -COLLISION_EPSILON && (maxZ1 - minZ2) > COLLISION_EPSILON;
+ }
+
+ public static boolean voxelShapeIntersect(final AABB box, final double minX, final double minY, final double minZ,
+ final double maxX, final double maxY, final double maxZ) {
+ return (box.minX - maxX) < -COLLISION_EPSILON && (box.maxX - minX) > COLLISION_EPSILON &&
+ (box.minY - maxY) < -COLLISION_EPSILON && (box.maxY - minY) > COLLISION_EPSILON &&
+ (box.minZ - maxZ) < -COLLISION_EPSILON && (box.maxZ - minZ) > COLLISION_EPSILON;
+ }
+
+ public static boolean voxelShapeIntersect(final AABB box1, final AABB box2) {
+ return (box1.minX - box2.maxX) < -COLLISION_EPSILON && (box1.maxX - box2.minX) > COLLISION_EPSILON &&
+ (box1.minY - box2.maxY) < -COLLISION_EPSILON && (box1.maxY - box2.minY) > COLLISION_EPSILON &&
+ (box1.minZ - box2.maxZ) < -COLLISION_EPSILON && (box1.maxZ - box2.minZ) > COLLISION_EPSILON;
+ }
+
+ public static double collideX(final AABB target, final AABB source, final double source_move) {
+ if (source_move == 0.0) {
+ return 0.0;
+ }
+
+ if ((source.minY - target.maxY) < -COLLISION_EPSILON && (source.maxY - target.minY) > COLLISION_EPSILON &&
+ (source.minZ - target.maxZ) < -COLLISION_EPSILON && (source.maxZ - target.minZ) > COLLISION_EPSILON) {
+ if (source_move >= 0.0) {
+ final double max_move = target.minX - source.maxX; // < 0.0 if no strict collision
+ if (max_move < -COLLISION_EPSILON) {
+ return source_move;
+ }
+ return Math.min(max_move, source_move);
+ } else {
+ final double max_move = target.maxX - source.minX; // > 0.0 if no strict collision
+ if (max_move > COLLISION_EPSILON) {
+ return source_move;
+ }
+ return Math.max(max_move, source_move);
+ }
+ }
+ return source_move;
+ }
+
+ public static double collideY(final AABB target, final AABB source, final double source_move) {
+ if (source_move == 0.0) {
+ return 0.0;
+ }
+
+ if ((source.minX - target.maxX) < -COLLISION_EPSILON && (source.maxX - target.minX) > COLLISION_EPSILON &&
+ (source.minZ - target.maxZ) < -COLLISION_EPSILON && (source.maxZ - target.minZ) > COLLISION_EPSILON) {
+ if (source_move >= 0.0) {
+ final double max_move = target.minY - source.maxY; // < 0.0 if no strict collision
+ if (max_move < -COLLISION_EPSILON) {
+ return source_move;
+ }
+ return Math.min(max_move, source_move);
+ } else {
+ final double max_move = target.maxY - source.minY; // > 0.0 if no strict collision
+ if (max_move > COLLISION_EPSILON) {
+ return source_move;
+ }
+ return Math.max(max_move, source_move);
+ }
+ }
+ return source_move;
+ }
+
+ public static double collideZ(final AABB target, final AABB source, final double source_move) {
+ if (source_move == 0.0) {
+ return 0.0;
+ }
+
+ if ((source.minX - target.maxX) < -COLLISION_EPSILON && (source.maxX - target.minX) > COLLISION_EPSILON &&
+ (source.minY - target.maxY) < -COLLISION_EPSILON && (source.maxY - target.minY) > COLLISION_EPSILON) {
+ if (source_move >= 0.0) {
+ final double max_move = target.minZ - source.maxZ; // < 0.0 if no strict collision
+ if (max_move < -COLLISION_EPSILON) {
+ return source_move;
+ }
+ return Math.min(max_move, source_move);
+ } else {
+ final double max_move = target.maxZ - source.minZ; // > 0.0 if no strict collision
+ if (max_move > COLLISION_EPSILON) {
+ return source_move;
+ }
+ return Math.max(max_move, source_move);
+ }
+ }
+ return source_move;
+ }
+
+ public static AABB offsetX(final AABB box, final double dx) {
+ return new AABB(box.minX + dx, box.minY, box.minZ, box.maxX + dx, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB offsetY(final AABB box, final double dy) {
+ return new AABB(box.minX, box.minY + dy, box.minZ, box.maxX, box.maxY + dy, box.maxZ, false);
+ }
+
+ public static AABB offsetZ(final AABB box, final double dz) {
+ return new AABB(box.minX, box.minY, box.minZ + dz, box.maxX, box.maxY, box.maxZ + dz, false);
+ }
+
+ public static AABB expandRight(final AABB box, final double dx) { // dx > 0.0
+ return new AABB(box.minX, box.minY, box.minZ, box.maxX + dx, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB expandLeft(final AABB box, final double dx) { // dx < 0.0
+ return new AABB(box.minX - dx, box.minY, box.minZ, box.maxX, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB expandUpwards(final AABB box, final double dy) { // dy > 0.0
+ return new AABB(box.minX, box.minY, box.minZ, box.maxX, box.maxY + dy, box.maxZ, false);
+ }
+
+ public static AABB expandDownwards(final AABB box, final double dy) { // dy < 0.0
+ return new AABB(box.minX, box.minY - dy, box.minZ, box.maxX, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB expandForwards(final AABB box, final double dz) { // dz > 0.0
+ return new AABB(box.minX, box.minY, box.minZ, box.maxX, box.maxY, box.maxZ + dz, false);
+ }
+
+ public static AABB expandBackwards(final AABB box, final double dz) { // dz < 0.0
+ return new AABB(box.minX, box.minY, box.minZ - dz, box.maxX, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB cutRight(final AABB box, final double dx) { // dx > 0.0
+ return new AABB(box.maxX, box.minY, box.minZ, box.maxX + dx, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB cutLeft(final AABB box, final double dx) { // dx < 0.0
+ return new AABB(box.minX + dx, box.minY, box.minZ, box.minX, box.maxY, box.maxZ, false);
+ }
+
+ public static AABB cutUpwards(final AABB box, final double dy) { // dy > 0.0
+ return new AABB(box.minX, box.maxY, box.minZ, box.maxX, box.maxY + dy, box.maxZ, false);
+ }
+
+ public static AABB cutDownwards(final AABB box, final double dy) { // dy < 0.0
+ return new AABB(box.minX, box.minY + dy, box.minZ, box.maxX, box.minY, box.maxZ, false);
+ }
+
+ public static AABB cutForwards(final AABB box, final double dz) { // dz > 0.0
+ return new AABB(box.minX, box.minY, box.maxZ, box.maxX, box.maxY, box.maxZ + dz, false);
+ }
+
+ public static AABB cutBackwards(final AABB box, final double dz) { // dz < 0.0
+ return new AABB(box.minX, box.minY, box.minZ + dz, box.maxX, box.maxY, box.minZ, false);
+ }
+
+ public static double performCollisionsX(final AABB currentBoundingBox, double value, final List<AABB> potentialCollisions) {
+ for (int i = 0, len = potentialCollisions.size(); i < len; ++i) {
+ final AABB target = potentialCollisions.get(i);
+ value = collideX(target, currentBoundingBox, value);
+ }
+
+ return value;
+ }
+
+ public static double performCollisionsY(final AABB currentBoundingBox, double value, final List<AABB> potentialCollisions) {
+ for (int i = 0, len = potentialCollisions.size(); i < len; ++i) {
+ final AABB target = potentialCollisions.get(i);
+ value = collideY(target, currentBoundingBox, value);
+ }
+
+ return value;
+ }
+
+ public static double performCollisionsZ(final AABB currentBoundingBox, double value, final List<AABB> potentialCollisions) {
+ for (int i = 0, len = potentialCollisions.size(); i < len; ++i) {
+ final AABB target = potentialCollisions.get(i);
+ value = collideZ(target, currentBoundingBox, value);
+ }
+
+ return value;
+ }
+
+ public static Vec3 performCollisions(final Vec3 moveVector, AABB axisalignedbb, final List<AABB> potentialCollisions) {
+ double x = moveVector.x;
+ double y = moveVector.y;
+ double z = moveVector.z;
+
+ if (y != 0.0) {
+ y = performCollisionsY(axisalignedbb, y, potentialCollisions);
+ if (y != 0.0) {
+ axisalignedbb = offsetY(axisalignedbb, y);
+ }
+ }
+
+ final boolean xSmaller = Math.abs(x) < Math.abs(z);
+
+ if (xSmaller && z != 0.0) {
+ z = performCollisionsZ(axisalignedbb, z, potentialCollisions);
+ if (z != 0.0) {
+ axisalignedbb = offsetZ(axisalignedbb, z);
+ }
+ }
+
+ if (x != 0.0) {
+ x = performCollisionsX(axisalignedbb, x, potentialCollisions);
+ if (!xSmaller && x != 0.0) {
+ axisalignedbb = offsetX(axisalignedbb, x);
+ }
+ }
+
+ if (!xSmaller && z != 0.0) {
+ z = performCollisionsZ(axisalignedbb, z, potentialCollisions);
+ }
+
+ return new Vec3(x, y, z);
+ }
+
+ public static boolean addBoxesToIfIntersects(final VoxelShape shape, final AABB aabb, final List<AABB> list) {
+ if (shape instanceof AABBVoxelShape) {
+ final AABBVoxelShape shapeCasted = (AABBVoxelShape)shape;
+ if (voxelShapeIntersect(shapeCasted.aabb, aabb) && !isEmpty(shapeCasted.aabb)) {
+ list.add(shapeCasted.aabb);
+ return true;
+ }
+ return false;
+ } else if (shape instanceof ArrayVoxelShape) {
+ final ArrayVoxelShape shapeCasted = (ArrayVoxelShape)shape;
+ // this can be optimised by checking an "overall shape" first, but not needed
+
+ final double offX = shapeCasted.getOffsetX();
+ final double offY = shapeCasted.getOffsetY();
+ final double offZ = shapeCasted.getOffsetZ();
+
+ boolean ret = false;
+
+ for (final AABB boundingBox : shapeCasted.getBoundingBoxesRepresentation()) {
+ final double minX, minY, minZ, maxX, maxY, maxZ;
+ if (voxelShapeIntersect(aabb, minX = boundingBox.minX + offX, minY = boundingBox.minY + offY, minZ = boundingBox.minZ + offZ,
+ maxX = boundingBox.maxX + offX, maxY = boundingBox.maxY + offY, maxZ = boundingBox.maxZ + offZ)
+ && !isEmpty(minX, minY, minZ, maxX, maxY, maxZ)) {
+ list.add(new AABB(minX, minY, minZ, maxX, maxY, maxZ, false));
+ ret = true;
+ }
+ }
+
+ return ret;
+ } else {
+ final List<AABB> boxes = shape.toAabbs();
+
+ boolean ret = false;
+
+ for (int i = 0, len = boxes.size(); i < len; ++i) {
+ final AABB box = boxes.get(i);
+ if (voxelShapeIntersect(box, aabb) && !isEmpty(box)) {
+ list.add(box);
+ ret = true;
+ }
+ }
+
+ return ret;
+ }
+ }
+
+ public static void addBoxesTo(final VoxelShape shape, final List<AABB> list) {
+ if (shape instanceof AABBVoxelShape) {
+ final AABBVoxelShape shapeCasted = (AABBVoxelShape)shape;
+ if (!isEmpty(shapeCasted.aabb)) {
+ list.add(shapeCasted.aabb);
+ }
+ } else if (shape instanceof ArrayVoxelShape) {
+ final ArrayVoxelShape shapeCasted = (ArrayVoxelShape)shape;
+
+ final double offX = shapeCasted.getOffsetX();
+ final double offY = shapeCasted.getOffsetY();
+ final double offZ = shapeCasted.getOffsetZ();
+
+ for (final AABB boundingBox : shapeCasted.getBoundingBoxesRepresentation()) {
+ final AABB box = boundingBox.move(offX, offY, offZ);
+ if (!isEmpty(box)) {
+ list.add(box);
+ }
+ }
+ } else {
+ final List<AABB> boxes = shape.toAabbs();
+ for (int i = 0, len = boxes.size(); i < len; ++i) {
+ final AABB box = boxes.get(i);
+ if (!isEmpty(box)) {
+ list.add(box);
+ }
+ }
+ }
+ }
+
+ public static boolean isAlmostCollidingOnBorder(final WorldBorder worldborder, final AABB boundingBox) {
+ return isAlmostCollidingOnBorder(worldborder, boundingBox.minX, boundingBox.maxX, boundingBox.minZ, boundingBox.maxZ);
+ }
+
+ public static boolean isAlmostCollidingOnBorder(final WorldBorder worldborder, final double boxMinX, final double boxMaxX,
+ final double boxMinZ, final double boxMaxZ) {
+ final double borderMinX = worldborder.getMinX(); // -X
+ final double borderMaxX = worldborder.getMaxX(); // +X
+
+ final double borderMinZ = worldborder.getMinZ(); // -Z
+ final double borderMaxZ = worldborder.getMaxZ(); // +Z
+
+ return
+ // Not intersecting if we're smaller
+ !voxelShapeIntersect(
+ boxMinX + COLLISION_EPSILON, Double.NEGATIVE_INFINITY, boxMinZ + COLLISION_EPSILON,
+ boxMaxX - COLLISION_EPSILON, Double.POSITIVE_INFINITY, boxMaxZ - COLLISION_EPSILON,
+ borderMinX, Double.NEGATIVE_INFINITY, borderMinZ, borderMaxX, Double.POSITIVE_INFINITY, borderMaxZ
+ )
+ &&
+
+ // Are intersecting if we're larger
+ voxelShapeIntersect(
+ boxMinX - COLLISION_EPSILON, Double.NEGATIVE_INFINITY, boxMinZ - COLLISION_EPSILON,
+ boxMaxX + COLLISION_EPSILON, Double.POSITIVE_INFINITY, boxMaxZ + COLLISION_EPSILON,
+ borderMinX, Double.NEGATIVE_INFINITY, borderMinZ, borderMaxX, Double.POSITIVE_INFINITY, borderMaxZ
+ );
+ }
+
+ public static boolean isCollidingWithBorderEdge(final WorldBorder worldborder, final AABB boundingBox) {
+ return isCollidingWithBorderEdge(worldborder, boundingBox.minX, boundingBox.maxX, boundingBox.minZ, boundingBox.maxZ);
+ }
+
+ public static boolean isCollidingWithBorderEdge(final WorldBorder worldborder, final double boxMinX, final double boxMaxX,
+ final double boxMinZ, final double boxMaxZ) {
+ final double borderMinX = worldborder.getMinX() + COLLISION_EPSILON; // -X
+ final double borderMaxX = worldborder.getMaxX() - COLLISION_EPSILON; // +X
+
+ final double borderMinZ = worldborder.getMinZ() + COLLISION_EPSILON; // -Z
+ final double borderMaxZ = worldborder.getMaxZ() - COLLISION_EPSILON; // +Z
+
+ return boxMinX < borderMinX || boxMaxX > borderMaxX || boxMinZ < borderMinZ || boxMaxZ > borderMaxZ;
+ }
+
+ public static boolean getCollisionsForBlocksOrWorldBorder(final CollisionGetter getter, final Entity entity, final AABB aabb,
+ final List<AABB> into, final boolean loadChunks, final boolean collidesWithUnloaded,
+ final boolean checkBorder, final boolean checkOnly, final BiPredicate<BlockState, BlockPos> predicate) {
+ boolean ret = false;
+
+ if (checkBorder) {
+ if (CollisionUtil.isAlmostCollidingOnBorder(getter.getWorldBorder(), aabb)) {
+ if (checkOnly) {
+ return true;
+ } else {
+ CollisionUtil.addBoxesTo(getter.getWorldBorder().getCollisionShape(), into);
+ ret = true;
+ }
+ }
+ }
+
+ int minBlockX = Mth.floor(aabb.minX - COLLISION_EPSILON) - 1;
+ int maxBlockX = Mth.floor(aabb.maxX + COLLISION_EPSILON) + 1;
+
+ int minBlockY = Mth.floor(aabb.minY - COLLISION_EPSILON) - 1;
+ int maxBlockY = Mth.floor(aabb.maxY + COLLISION_EPSILON) + 1;
+
+ int minBlockZ = Mth.floor(aabb.minZ - COLLISION_EPSILON) - 1;
+ int maxBlockZ = Mth.floor(aabb.maxZ + COLLISION_EPSILON) + 1;
+
+ final int minSection = WorldUtil.getMinSection(getter);
+ final int maxSection = WorldUtil.getMaxSection(getter);
+ final int minBlock = minSection << 4;
+ final int maxBlock = (maxSection << 4) | 15;
+
+ BlockPos.MutableBlockPos mutablePos = new BlockPos.MutableBlockPos();
+ CollisionContext collisionShape = null;
+
+ // special cases:
+ if (minBlockY > maxBlock || maxBlockY < minBlock) {
+ // no point in checking
+ return ret;
+ }
+
+ int minYIterate = Math.max(minBlock, minBlockY);
+ int maxYIterate = Math.min(maxBlock, maxBlockY);
+
+ int minChunkX = minBlockX >> 4;
+ int maxChunkX = maxBlockX >> 4;
+
+ int minChunkZ = minBlockZ >> 4;
+ int maxChunkZ = maxBlockZ >> 4;
+
+ ServerChunkCache chunkProvider;
+ if (getter instanceof WorldGenRegion) {
+ chunkProvider = null;
+ } else if (getter instanceof ServerLevel) {
+ chunkProvider = ((ServerLevel)getter).getChunkSource();
+ } else {
+ chunkProvider = null;
+ }
+ // TODO special case single chunk?
+
+ for (int currChunkZ = minChunkZ; currChunkZ <= maxChunkZ; ++currChunkZ) {
+ int minZ = currChunkZ == minChunkZ ? minBlockZ & 15 : 0; // coordinate in chunk
+ int maxZ = currChunkZ == maxChunkZ ? maxBlockZ & 15 : 15; // coordinate in chunk
+
+ for (int currChunkX = minChunkX; currChunkX <= maxChunkX; ++currChunkX) {
+ int minX = currChunkX == minChunkX ? minBlockX & 15 : 0; // coordinate in chunk
+ int maxX = currChunkX == maxChunkX ? maxBlockX & 15 : 15; // coordinate in chunk
+
+ int chunkXGlobalPos = currChunkX << 4;
+ int chunkZGlobalPos = currChunkZ << 4;
+ ChunkAccess chunk;
+ if (chunkProvider == null) {
+ chunk = (ChunkAccess)getter.getChunkForCollisions(currChunkX, currChunkZ);
+ } else {
+ chunk = loadChunks ? chunkProvider.getChunk(currChunkX, currChunkZ, true) : chunkProvider.getChunkAtIfLoadedImmediately(currChunkX, currChunkZ);
+ }
+
+
+ if (chunk == null) {
+ if (collidesWithUnloaded) {
+ if (checkOnly) {
+ return true;
+ } else {
+ into.add(getBoxForChunk(currChunkX, currChunkZ));
+ ret = true;
+ }
+ }
+ continue;
+ }
+
+ LevelChunkSection[] sections = chunk.getSections();
+
+ // bound y
+
+ for (int currY = minYIterate; currY <= maxYIterate; ++currY) {
+ LevelChunkSection section = sections[(currY >> 4) - minSection];
+ if (section.hasOnlyAir()) {
+ // empty
+ // skip to next section
+ currY = (currY & ~(15)) + 15; // increment by 15: iterator loop increments by the extra one
+ continue;
+ }
+
+ net.minecraft.world.level.chunk.PalettedContainer<BlockState> blocks = section.states;
+
+ for (int currZ = minZ; currZ <= maxZ; ++currZ) {
+ for (int currX = minX; currX <= maxX; ++currX) {
+ int localBlockIndex = (currX) | (currZ << 4) | ((currY & 15) << 8);
+ int blockX = currX | chunkXGlobalPos;
+ int blockY = currY;
+ int blockZ = currZ | chunkZGlobalPos;
+
+ int edgeCount = ((blockX == minBlockX || blockX == maxBlockX) ? 1 : 0) +
+ ((blockY == minBlockY || blockY == maxBlockY) ? 1 : 0) +
+ ((blockZ == minBlockZ || blockZ == maxBlockZ) ? 1 : 0);
+ if (edgeCount == 3) {
+ continue;
+ }
+
+ BlockState blockData = blocks.get(localBlockIndex);
+ if (blockData.isAir()) {
+ continue;
+ }
+
+ if ((edgeCount != 1 || blockData.shapeExceedsCube()) && (edgeCount != 2 || blockData.getBlock() == Blocks.MOVING_PISTON)) {
+ mutablePos.set(blockX, blockY, blockZ);
+ if (collisionShape == null) {
+ collisionShape = new LazyEntityCollisionContext(entity);
+ }
+ VoxelShape voxelshape2 = blockData.getCollisionShape(getter, mutablePos, collisionShape);
+ if (voxelshape2 != Shapes.empty()) {
+ VoxelShape voxelshape3 = voxelshape2.move((double)blockX, (double)blockY, (double)blockZ);
+
+ if (predicate != null && !predicate.test(blockData, mutablePos)) {
+ continue;
+ }
+
+ if (checkOnly) {
+ if (voxelshape3.intersects(aabb)) {
+ return true;
+ }
+ } else {
+ ret |= addBoxesToIfIntersects(voxelshape3, aabb, into);
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ return ret;
+ }
+
+ public static boolean getEntityHardCollisions(final CollisionGetter getter, final Entity entity, AABB aabb,
+ final List<AABB> into, final boolean checkOnly, final Predicate<Entity> predicate) {
+ if (isEmpty(aabb) || !(getter instanceof EntityGetter entityGetter)) {
+ return false;
+ }
+
+ boolean ret = false;
+
+ // to comply with vanilla intersection rules, expand by -epsilon so we only get stuff we definitely collide with.
+ // Vanilla for hard collisions has this backwards, and they expand by +epsilon but this causes terrible problems
+ // specifically with boat collisions.
+ aabb = aabb.inflate(-COLLISION_EPSILON, -COLLISION_EPSILON, -COLLISION_EPSILON);
+ final List<Entity> entities = CachedLists.getTempGetEntitiesList();
+ try {
+ if (entity != null && entity.hardCollides()) {
+ entityGetter.getEntities(entity, aabb, predicate, entities);
+ } else {
+ entityGetter.getHardCollidingEntities(entity, aabb, predicate, entities);
+ }
+
+ for (int i = 0, len = entities.size(); i < len; ++i) {
+ final Entity otherEntity = entities.get(i);
+
+ if ((entity == null && otherEntity.canBeCollidedWith()) || (entity != null && entity.canCollideWith(otherEntity))) {
+ if (checkOnly) {
+ return true;
+ } else {
+ into.add(otherEntity.getBoundingBox());
+ ret = true;
+ }
+ }
+ }
+ } finally {
+ CachedLists.returnTempGetEntitiesList(entities);
+ }
+
+ return ret;
+ }
+
+ public static boolean getCollisions(final CollisionGetter view, final Entity entity, final AABB aabb,
+ final List<AABB> into, final boolean loadChunks, final boolean collidesWithUnloadedChunks,
+ final boolean checkBorder, final boolean checkOnly, final BiPredicate<BlockState, BlockPos> blockPredicate,
+ final Predicate<Entity> entityPredicate) {
+ if (checkOnly) {
+ return getCollisionsForBlocksOrWorldBorder(view, entity, aabb, into, loadChunks, collidesWithUnloadedChunks, checkBorder, checkOnly, blockPredicate)
+ || getEntityHardCollisions(view, entity, aabb, into, checkOnly, entityPredicate);
+ } else {
+ return getCollisionsForBlocksOrWorldBorder(view, entity, aabb, into, loadChunks, collidesWithUnloadedChunks, checkBorder, checkOnly, blockPredicate)
+ | getEntityHardCollisions(view, entity, aabb, into, checkOnly, entityPredicate);
+ }
+ }
+
+ public static final class LazyEntityCollisionContext extends EntityCollisionContext {
+
+ private CollisionContext delegate;
+
+ public LazyEntityCollisionContext(final Entity entity) {
+ super(false, 0.0, null, null, entity);
+ }
+
+ public CollisionContext getDelegate() {
+ final Entity entity = this.getEntity();
+ return this.delegate == null ? this.delegate = (entity == null ? CollisionContext.empty() : CollisionContext.of(entity)) : this.delegate;
+ }
+
+ @Override
+ public boolean isDescending() {
+ return this.getDelegate().isDescending();
+ }
+
+ @Override
+ public boolean isAbove(final VoxelShape shape, final BlockPos pos, final boolean defaultValue) {
+ return this.getDelegate().isAbove(shape, pos, defaultValue);
+ }
+
+ @Override
+ public boolean isHoldingItem(final Item item) {
+ return this.getDelegate().isHoldingItem(item);
+ }
+
+ @Override
+ public boolean canStandOnFluid(final FluidState state, final FlowingFluid fluid) {
+ return this.getDelegate().canStandOnFluid(state, fluid);
+ }
+ }
+
+ private CollisionUtil() {
+ throw new RuntimeException();
+ }
+}
diff --git a/src/main/java/io/papermc/paper/voxel/AABBVoxelShape.java b/src/main/java/io/papermc/paper/voxel/AABBVoxelShape.java
new file mode 100644
index 0000000000000000000000000000000000000000..d67a40e7be030142443680c89e1763fc9ecdfe0a
--- /dev/null
+++ b/src/main/java/io/papermc/paper/voxel/AABBVoxelShape.java
@@ -0,0 +1,200 @@
+package io.papermc.paper.voxel;
+
+import io.papermc.paper.util.CollisionUtil;
+import it.unimi.dsi.fastutil.doubles.DoubleArrayList;
+import it.unimi.dsi.fastutil.doubles.DoubleList;
+import net.minecraft.core.Direction;
+import net.minecraft.world.phys.AABB;
+import net.minecraft.world.phys.shapes.Shapes;
+import net.minecraft.world.phys.shapes.VoxelShape;
+import java.util.ArrayList;
+import java.util.List;
+
+public final class AABBVoxelShape extends VoxelShape {
+
+ public final AABB aabb;
+
+ public AABBVoxelShape(AABB aabb) {
+ super(Shapes.getFullUnoptimisedCube().shape);
+ this.aabb = aabb;
+ }
+
+ @Override
+ public boolean isEmpty() {
+ return CollisionUtil.isEmpty(this.aabb);
+ }
+
+ @Override
+ public double min(Direction.Axis enumdirection_enumaxis) {
+ switch (enumdirection_enumaxis.ordinal()) {
+ case 0:
+ return this.aabb.minX;
+ case 1:
+ return this.aabb.minY;
+ case 2:
+ return this.aabb.minZ;
+ default:
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+
+ @Override
+ public double max(Direction.Axis enumdirection_enumaxis) {
+ switch (enumdirection_enumaxis.ordinal()) {
+ case 0:
+ return this.aabb.maxX;
+ case 1:
+ return this.aabb.maxY;
+ case 2:
+ return this.aabb.maxZ;
+ default:
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+
+ @Override
+ public AABB bounds() {
+ return this.aabb;
+ }
+
+ // enum direction axis is from 0 -> 2, so we keep the lower bits for direction axis.
+ @Override
+ protected double get(Direction.Axis enumdirection_enumaxis, int i) {
+ switch (enumdirection_enumaxis.ordinal() | (i << 2)) {
+ case (0 | (0 << 2)):
+ return this.aabb.minX;
+ case (1 | (0 << 2)):
+ return this.aabb.minY;
+ case (2 | (0 << 2)):
+ return this.aabb.minZ;
+ case (0 | (1 << 2)):
+ return this.aabb.maxX;
+ case (1 | (1 << 2)):
+ return this.aabb.maxY;
+ case (2 | (1 << 2)):
+ return this.aabb.maxZ;
+ default:
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+
+ private DoubleList cachedListX;
+ private DoubleList cachedListY;
+ private DoubleList cachedListZ;
+
+ @Override
+ protected DoubleList getCoords(Direction.Axis enumdirection_enumaxis) {
+ switch (enumdirection_enumaxis.ordinal()) {
+ case 0:
+ return this.cachedListX == null ? this.cachedListX = DoubleArrayList.wrap(new double[] { this.aabb.minX, this.aabb.maxX }) : this.cachedListX;
+ case 1:
+ return this.cachedListY == null ? this.cachedListY = DoubleArrayList.wrap(new double[] { this.aabb.minY, this.aabb.maxY }) : this.cachedListY;
+ case 2:
+ return this.cachedListZ == null ? this.cachedListZ = DoubleArrayList.wrap(new double[] { this.aabb.minZ, this.aabb.maxZ }) : this.cachedListZ;
+ default:
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+
+ @Override
+ public VoxelShape move(double d0, double d1, double d2) {
+ return new AABBVoxelShape(this.aabb.move(d0, d1, d2));
+ }
+
+ @Override
+ public VoxelShape optimize() {
+ if (this.isEmpty()) {
+ return Shapes.empty();
+ } else if (this == Shapes.BLOCK_OPTIMISED || this.aabb.equals(Shapes.BLOCK_OPTIMISED.aabb)) {
+ return Shapes.BLOCK_OPTIMISED;
+ }
+ return this;
+ }
+
+ @Override
+ public void forAllBoxes(Shapes.DoubleLineConsumer voxelshapes_a) {
+ voxelshapes_a.consume(this.aabb.minX, this.aabb.minY, this.aabb.minZ, this.aabb.maxX, this.aabb.maxY, this.aabb.maxZ);
+ }
+
+ @Override
+ public List<AABB> toAabbs() { // getAABBs
+ List<AABB> ret = new ArrayList<>(1);
+ ret.add(this.aabb);
+ return ret;
+ }
+
+ @Override
+ protected int findIndex(Direction.Axis enumdirection_enumaxis, double d0) { // findPointIndexAfterOffset
+ switch (enumdirection_enumaxis.ordinal()) {
+ case 0:
+ return d0 < this.aabb.maxX ? (d0 < this.aabb.minX ? -1 : 0) : 1;
+ case 1:
+ return d0 < this.aabb.maxY ? (d0 < this.aabb.minY ? -1 : 0) : 1;
+ case 2:
+ return d0 < this.aabb.maxZ ? (d0 < this.aabb.minZ ? -1 : 0) : 1;
+ default:
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+
+ @Override
+ protected VoxelShape calculateFace(Direction direction) {
+ if (this.isEmpty()) {
+ return Shapes.empty();
+ }
+ if (this == Shapes.BLOCK_OPTIMISED) {
+ return this;
+ }
+ switch (direction) {
+ case EAST: // +X
+ case WEST: { // -X
+ final double from = direction == Direction.EAST ? 1.0 - CollisionUtil.COLLISION_EPSILON : CollisionUtil.COLLISION_EPSILON;
+ if (from > this.aabb.maxX || this.aabb.minX > from) {
+ return Shapes.empty();
+ }
+ return new AABBVoxelShape(new AABB(0.0, this.aabb.minY, this.aabb.minZ, 1.0, this.aabb.maxY, this.aabb.maxZ)).optimize();
+ }
+ case UP: // +Y
+ case DOWN: { // -Y
+ final double from = direction == Direction.UP ? 1.0 - CollisionUtil.COLLISION_EPSILON : CollisionUtil.COLLISION_EPSILON;
+ if (from > this.aabb.maxY || this.aabb.minY > from) {
+ return Shapes.empty();
+ }
+ return new AABBVoxelShape(new AABB(this.aabb.minX, 0.0, this.aabb.minZ, this.aabb.maxX, 1.0, this.aabb.maxZ)).optimize();
+ }
+ case SOUTH: // +Z
+ case NORTH: { // -Z
+ final double from = direction == Direction.SOUTH ? 1.0 - CollisionUtil.COLLISION_EPSILON : CollisionUtil.COLLISION_EPSILON;
+ if (from > this.aabb.maxZ || this.aabb.minZ > from) {
+ return Shapes.empty();
+ }
+ return new AABBVoxelShape(new AABB(this.aabb.minX, this.aabb.minY, 0.0, this.aabb.maxX, this.aabb.maxY, 1.0)).optimize();
+ }
+ default: {
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+ }
+
+ @Override
+ public double collide(Direction.Axis enumdirection_enumaxis, AABB axisalignedbb, double d0) {
+ if (CollisionUtil.isEmpty(this.aabb) || CollisionUtil.isEmpty(axisalignedbb)) {
+ return d0;
+ }
+ switch (enumdirection_enumaxis.ordinal()) {
+ case 0:
+ return CollisionUtil.collideX(this.aabb, axisalignedbb, d0);
+ case 1:
+ return CollisionUtil.collideY(this.aabb, axisalignedbb, d0);
+ case 2:
+ return CollisionUtil.collideZ(this.aabb, axisalignedbb, d0);
+ default:
+ throw new IllegalStateException("Unknown axis requested");
+ }
+ }
+
+ @Override
+ public boolean intersects(AABB axisalingedbb) {
+ return CollisionUtil.voxelShapeIntersect(this.aabb, axisalingedbb);
+ }
+}
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index d626af3879e558cdfbe95b1e70e0b32e0f4d1170..7b23535a680d2a8534dcb8dd87770f66fb982c13 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -415,7 +415,7 @@ public class ServerPlayer extends Player {
if (blockposition1 != null) {
this.moveTo(blockposition1, 0.0F, 0.0F);
- if (world.noCollision((Entity) this)) {
+ if (world.noCollision(this, this.getBoundingBox(), true)) { // Paper - make sure this loads chunks, we default to NOT loading now
break;
}
}
@@ -423,7 +423,7 @@ public class ServerPlayer extends Player {
} else {
this.moveTo(blockposition, 0.0F, 0.0F);
- while (!world.noCollision((Entity) this) && this.getY() < (double) (world.getMaxBuildHeight() - 1)) {
+ while (!world.noCollision(this, this.getBoundingBox(), true) && this.getY() < (double) (world.getMaxBuildHeight() - 1)) { // Paper - make sure this loads chunks, we default to NOT loading now
this.setPos(this.getX(), this.getY() + 1.0D, this.getZ());
}
}
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 25b787d1b22e495fb6756e4ee909776ed8699492..042be2cf60a9d01698808d84f2e537a5eb952079 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -932,7 +932,7 @@ public abstract class PlayerList {
// CraftBukkit end
worldserver1.getChunkSource().addRegionTicket(net.minecraft.server.level.TicketType.POST_TELEPORT, new net.minecraft.world.level.ChunkPos(location.getBlockX() >> 4, location.getBlockZ() >> 4), 1, entityplayer.getId()); // Paper
- while (avoidSuffocation && !worldserver1.noCollision(entityplayer1) && entityplayer1.getY() < (double) worldserver1.getMaxBuildHeight()) {
+ while (avoidSuffocation && !worldserver1.noCollision(entityplayer1, entityplayer1.getBoundingBox(), true) && entityplayer1.getY() < (double) worldserver1.getMaxBuildHeight()) { // Paper - make sure this loads chunks, we default to NOT loading now
entityplayer1.setPos(entityplayer1.getX(), entityplayer1.getY() + 1.0D, entityplayer1.getZ());
}
// CraftBukkit start
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index e2c35ace138d7a6c41e7f07e9759f684b7152b71..9bb44918af119d9afae4a0a050c6a5381f028364 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1076,9 +1076,44 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
float f2 = this.getBlockSpeedFactor();
this.setDeltaMovement(this.getDeltaMovement().multiply((double) f2, 1.0D, (double) f2));
- if (this.level.getBlockStatesIfLoaded(this.getBoundingBox().deflate(1.0E-6D)).noneMatch((iblockdata1) -> {
- return iblockdata1.is((Tag) BlockTags.FIRE) || iblockdata1.is(Blocks.LAVA);
- })) {
+ // Paper start - remove expensive streams from here
+ boolean noneMatch = true;
+ AABB fireSearchBox = this.getBoundingBox().deflate(1.0E-6D);
+ {
+ int minX = Mth.floor(fireSearchBox.minX);
+ int minY = Mth.floor(fireSearchBox.minY);
+ int minZ = Mth.floor(fireSearchBox.minZ);
+ int maxX = Mth.floor(fireSearchBox.maxX);
+ int maxY = Mth.floor(fireSearchBox.maxY);
+ int maxZ = Mth.floor(fireSearchBox.maxZ);
+ fire_search_loop:
+ for (int fz = minZ; fz <= maxZ; ++fz) {
+ for (int fx = minX; fx <= maxX; ++fx) {
+ for (int fy = minY; fy <= maxY; ++fy) {
+ net.minecraft.world.level.chunk.LevelChunk chunk = (net.minecraft.world.level.chunk.LevelChunk)this.level.getChunkIfLoadedImmediately(fx >> 4, fz >> 4);
+ if (chunk == null) {
+ // Vanilla rets an empty stream if all the chunks are not loaded, so noneMatch will be true
+ // even if we're in lava/fire
+ noneMatch = true;
+ break fire_search_loop;
+ }
+ if (!noneMatch) {
+ // don't do get type, we already know we're in fire - we just need to check the chunks
+ // loaded state
+ continue;
+ }
+
+ BlockState type = chunk.getBlockStateFinal(fx, fy, fz);
+ if (type.is((Tag) BlockTags.FIRE) || type.is(Blocks.LAVA)) {
+ noneMatch = false;
+ // can't break, we need to retain vanilla behavior by ensuring ALL chunks are loaded
+ }
+ }
+ }
+ }
+ }
+ if (noneMatch) {
+ // Paper end - remove expensive streams from here
if (this.remainingFireTicks <= 0) {
this.setRemainingFireTicks(-this.getFireImmuneTicks());
}
@@ -1212,32 +1247,78 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
}
private Vec3 collide(Vec3 movement) {
- AABB axisalignedbb = this.getBoundingBox();
- List<VoxelShape> list = this.level.getEntityCollisions(this, axisalignedbb.expandTowards(movement));
- Vec3 vec3d1 = movement.lengthSqr() == 0.0D ? movement : Entity.collideBoundingBox(this, movement, axisalignedbb, this.level, list);
- boolean flag = movement.x != vec3d1.x;
- boolean flag1 = movement.y != vec3d1.y;
- boolean flag2 = movement.z != vec3d1.z;
- boolean flag3 = this.onGround || flag1 && movement.y < 0.0D;
-
- if (this.maxUpStep > 0.0F && flag3 && (flag || flag2)) {
- Vec3 vec3d2 = Entity.collideBoundingBox(this, new Vec3(movement.x, (double) this.maxUpStep, movement.z), axisalignedbb, this.level, list);
- Vec3 vec3d3 = Entity.collideBoundingBox(this, new Vec3(0.0D, (double) this.maxUpStep, 0.0D), axisalignedbb.expandTowards(movement.x, 0.0D, movement.z), this.level, list);
-
- if (vec3d3.y < (double) this.maxUpStep) {
- Vec3 vec3d4 = Entity.collideBoundingBox(this, new Vec3(movement.x, 0.0D, movement.z), axisalignedbb.move(vec3d3), this.level, list).add(vec3d3);
-
- if (vec3d4.horizontalDistanceSqr() > vec3d2.horizontalDistanceSqr()) {
- vec3d2 = vec3d4;
+ // Paper start - optimise collisions
+ // This is a copy of vanilla's except that it uses strictly AABB math
+ if (movement.x == 0.0 && movement.y == 0.0 && movement.z == 0.0) {
+ return movement;
+ }
+
+ final Level world = this.level;
+ final AABB currBoundingBox = this.getBoundingBox();
+
+ if (io.papermc.paper.util.CollisionUtil.isEmpty(currBoundingBox)) {
+ return movement;
+ }
+
+ final List<AABB> potentialCollisions = io.papermc.paper.util.CachedLists.getTempCollisionList();
+ try {
+ final double stepHeight = (double)this.maxUpStep;
+ final AABB collisionBox;
+
+ if (movement.x == 0.0 && movement.z == 0.0 && movement.y != 0.0) {
+ if (movement.y > 0.0) {
+ collisionBox = io.papermc.paper.util.CollisionUtil.cutUpwards(currBoundingBox, movement.y);
+ } else {
+ collisionBox = io.papermc.paper.util.CollisionUtil.cutDownwards(currBoundingBox, movement.y);
+ }
+ } else {
+ if (stepHeight > 0.0 && (this.onGround || (movement.y < 0.0)) && (movement.x != 0.0 || movement.z != 0.0)) {
+ // don't bother getting the collisions if we don't need them.
+ if (movement.y <= 0.0) {
+ collisionBox = io.papermc.paper.util.CollisionUtil.expandUpwards(currBoundingBox.expandTowards(movement.x, movement.y, movement.z), stepHeight);
+ } else {
+ collisionBox = currBoundingBox.expandTowards(movement.x, Math.max(stepHeight, movement.y), movement.z);
+ }
+ } else {
+ collisionBox = currBoundingBox.expandTowards(movement.x, movement.y, movement.z);
}
}
- if (vec3d2.horizontalDistanceSqr() > vec3d1.horizontalDistanceSqr()) {
- return vec3d2.add(Entity.collideBoundingBox(this, new Vec3(0.0D, -vec3d2.y + movement.y, 0.0D), axisalignedbb.move(vec3d2), this.level, list));
+ io.papermc.paper.util.CollisionUtil.getCollisions(world, this, collisionBox, potentialCollisions, false, true,
+ false, false, null, null);
+
+ if (io.papermc.paper.util.CollisionUtil.isCollidingWithBorderEdge(world.getWorldBorder(), collisionBox)) {
+ io.papermc.paper.util.CollisionUtil.addBoxesToIfIntersects(world.getWorldBorder().getCollisionShape(), collisionBox, potentialCollisions);
}
- }
- return vec3d1;
+ final Vec3 limitedMoveVector = io.papermc.paper.util.CollisionUtil.performCollisions(movement, currBoundingBox, potentialCollisions);
+
+ if (stepHeight > 0.0
+ && (this.onGround || (limitedMoveVector.y != movement.y && movement.y < 0.0))
+ && (limitedMoveVector.x != movement.x || limitedMoveVector.z != movement.z)) {
+ Vec3 vec3d2 = io.papermc.paper.util.CollisionUtil.performCollisions(new Vec3(movement.x, stepHeight, movement.z), currBoundingBox, potentialCollisions);
+ final Vec3 vec3d3 = io.papermc.paper.util.CollisionUtil.performCollisions(new Vec3(0.0, stepHeight, 0.0), currBoundingBox.expandTowards(movement.x, 0.0, movement.z), potentialCollisions);
+
+ if (vec3d3.y < stepHeight) {
+ final Vec3 vec3d4 = io.papermc.paper.util.CollisionUtil.performCollisions(new Vec3(movement.x, 0.0D, movement.z), currBoundingBox.move(vec3d3), potentialCollisions).add(vec3d3);
+
+ if (vec3d4.horizontalDistanceSqr() > vec3d2.horizontalDistanceSqr()) {
+ vec3d2 = vec3d4;
+ }
+ }
+
+ if (vec3d2.horizontalDistanceSqr() > limitedMoveVector.horizontalDistanceSqr()) {
+ return vec3d2.add(io.papermc.paper.util.CollisionUtil.performCollisions(new Vec3(0.0D, -vec3d2.y + movement.y, 0.0D), currBoundingBox.move(vec3d2), potentialCollisions));
+ }
+
+ return limitedMoveVector;
+ } else {
+ return limitedMoveVector;
+ }
+ } finally {
+ io.papermc.paper.util.CachedLists.returnTempCollisionList(potentialCollisions);
+ }
+ // Paper end - optimise collisions
}
public static Vec3 collideBoundingBox(@Nullable Entity entity, Vec3 movement, AABB entityBoundingBox, Level world, List<VoxelShape> collisions) {
@@ -2362,11 +2443,12 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
float f = this.dimensions.width * 0.8F;
AABB axisalignedbb = AABB.ofSize(vec3d, (double) f, 1.0E-6D, (double) f);
- return this.level.getBlockStates(axisalignedbb).filter(Predicate.not(BlockBehaviour.BlockStateBase::isAir)).anyMatch((iblockdata) -> {
- BlockPos blockposition = new BlockPos(vec3d);
-
- return iblockdata.isSuffocating(this.level, blockposition) && Shapes.joinIsNotEmpty(iblockdata.getCollisionShape(this.level, blockposition).move(vec3d.x, vec3d.y, vec3d.z), Shapes.create(axisalignedbb), BooleanOp.AND);
- });
+ // Paper start
+ return io.papermc.paper.util.CollisionUtil.getCollisionsForBlocksOrWorldBorder(this.level, this, axisalignedbb, null,
+ false, false, false, true, (BlockState blockState, BlockPos blockPos) -> {
+ return blockState.isSuffocating(this.level, blockPos);
+ });
+ // Paper end
}
}
diff --git a/src/main/java/net/minecraft/world/level/BlockCollisions.java b/src/main/java/net/minecraft/world/level/BlockCollisions.java
index a733c91700a38634806e9155c693b227e6aa16b6..120e1778f2bdd64ca19ee21dc5c5f2f382895470 100644
--- a/src/main/java/net/minecraft/world/level/BlockCollisions.java
+++ b/src/main/java/net/minecraft/world/level/BlockCollisions.java
@@ -106,7 +106,7 @@ public class BlockCollisions extends AbstractIterator<VoxelShape> {
VoxelShape voxelShape = blockState.getCollisionShape(this.collisionGetter, this.pos, this.context);
if (voxelShape == Shapes.block()) {
- if (!this.box.intersects((double)i, (double)j, (double)k, (double)i + 1.0D, (double)j + 1.0D, (double)k + 1.0D)) {
+ if (!io.papermc.paper.util.CollisionUtil.voxelShapeIntersect(this.box, (double)i, (double)j, (double)k, (double)i + 1.0D, (double)j + 1.0D, (double)k + 1.0D)) { // Paper - keep vanilla behavior for voxelshape intersection - See comment in CollisionUtil
continue;
}
diff --git a/src/main/java/net/minecraft/world/level/CollisionGetter.java b/src/main/java/net/minecraft/world/level/CollisionGetter.java
index 56d94c94fb0d4dc468bb5d69be655ddd5c6b5360..d7d396ad73866a97cd9f63b34ad8c587f522e713 100644
--- a/src/main/java/net/minecraft/world/level/CollisionGetter.java
+++ b/src/main/java/net/minecraft/world/level/CollisionGetter.java
@@ -35,31 +35,33 @@ public interface CollisionGetter extends BlockGetter {
return this.isUnobstructed(entity, Shapes.create(entity.getBoundingBox()));
}
+ // Paper start - optimise collisions
+ default boolean noCollision(Entity entity, AABB box, boolean loadChunks) {
+ return !io.papermc.paper.util.CollisionUtil.getCollisionsForBlocksOrWorldBorder(this, entity, box, null, loadChunks, false, entity != null, true, null)
+ && !io.papermc.paper.util.CollisionUtil.getEntityHardCollisions(this, entity, box, null, true, null);
+ }
+ // Paper end - optimise collisions
+
default boolean noCollision(AABB box) {
- return this.noCollision((Entity)null, box);
+ // Paper start - optimise collisions
+ return !io.papermc.paper.util.CollisionUtil.getCollisionsForBlocksOrWorldBorder(this, null, box, null, false, false, false, true, null)
+ && !io.papermc.paper.util.CollisionUtil.getEntityHardCollisions(this, null, box, null, true, null);
+ // Paper end - optimise collisions
}
default boolean noCollision(Entity entity) {
- return this.noCollision(entity, entity.getBoundingBox());
+ // Paper start - optimise collisions
+ AABB box = entity.getBoundingBox();
+ return !io.papermc.paper.util.CollisionUtil.getCollisionsForBlocksOrWorldBorder(this, entity, box, null, false, false, entity != null, true, null)
+ && !io.papermc.paper.util.CollisionUtil.getEntityHardCollisions(this, entity, box, null, true, null);
+ // Paper end - optimise collisions
}
default boolean noCollision(@Nullable Entity entity, AABB box) {
- try { if (entity != null) entity.collisionLoadChunks = true; // Paper
- for(VoxelShape voxelShape : this.getBlockCollisions(entity, box)) {
- if (!voxelShape.isEmpty()) {
- return false;
- }
- }
- } finally { if (entity != null) entity.collisionLoadChunks = false; } // Paper
-
- if (!this.getEntityCollisions(entity, box).isEmpty()) {
- return false;
- } else if (entity == null) {
- return true;
- } else {
- VoxelShape voxelShape2 = this.borderCollision(entity, box);
- return voxelShape2 == null || !Shapes.joinIsNotEmpty(voxelShape2, Shapes.create(box), BooleanOp.AND);
- }
+ // Paper start - optimise collisions
+ return !io.papermc.paper.util.CollisionUtil.getCollisionsForBlocksOrWorldBorder(this, entity, box, null, false, false, entity != null, true, null)
+ && !io.papermc.paper.util.CollisionUtil.getEntityHardCollisions(this, entity, box, null, true, null);
+ // Paper end - optimise collisions
}
List<VoxelShape> getEntityCollisions(@Nullable Entity entity, AABB box);
diff --git a/src/main/java/net/minecraft/world/level/EntityGetter.java b/src/main/java/net/minecraft/world/level/EntityGetter.java
index 30276959c0119813c27ee3f98e237c93236e5b39..6df710cecea9a5c91ccf8bdaec60bdc88a601777 100644
--- a/src/main/java/net/minecraft/world/level/EntityGetter.java
+++ b/src/main/java/net/minecraft/world/level/EntityGetter.java
@@ -50,7 +50,7 @@ public interface EntityGetter {
return true;
} else {
for(Entity entity2 : this.getEntities(entity, shape.bounds())) {
- if (!entity2.isRemoved() && entity2.blocksBuilding && (entity == null || !entity2.isPassengerOfSameVehicle(entity)) && Shapes.joinIsNotEmpty(shape, Shapes.create(entity2.getBoundingBox()), BooleanOp.AND)) {
+ if (!entity2.isRemoved() && entity2.blocksBuilding && (entity == null || !entity2.isPassengerOfSameVehicle(entity)) && shape.intersects(entity2.getBoundingBox())) { // Paper
return false;
}
}
@@ -68,7 +68,7 @@ public interface EntityGetter {
return List.of();
} else {
Predicate<Entity> predicate = entity == null ? EntitySelector.CAN_BE_COLLIDED_WITH : EntitySelector.NO_SPECTATORS.and(entity::canCollideWith);
- List<Entity> list = this.getEntities(entity, box.inflate(1.0E-7D), predicate);
+ List<Entity> list = this.getEntities(entity, box.inflate(-1.0E-7D), predicate); // Paper - needs to be negated, or else we get things we don't collide with
if (list.isEmpty()) {
return List.of();
} else {
diff --git a/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java b/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
index 1831588b275f11aff37573fead835f6ddabfece1..05c46f3b3bce5225b819d86e6e06729a5093e092 100644
--- a/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
+++ b/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
@@ -726,7 +726,7 @@ public abstract class BlockBehaviour {
}
this.shapeExceedsCube = this.cache == null || this.cache.largeCollisionShape; // Paper - moved from actual method to here
this.opacityIfCached = this.cache == null || this.isConditionallyFullOpaque() ? -1 : this.cache.lightBlock; // Paper - cache opacity for light
-
+ // TODO optimise light
}
public Block getBlock() {
diff --git a/src/main/java/net/minecraft/world/phys/AABB.java b/src/main/java/net/minecraft/world/phys/AABB.java
index 120498a39b7ca7aee9763084507508d4a1c425aa..68cc6f2a78a06293a29317fda72ab3ee79b3533a 100644
--- a/src/main/java/net/minecraft/world/phys/AABB.java
+++ b/src/main/java/net/minecraft/world/phys/AABB.java
@@ -25,6 +25,17 @@ public class AABB {
this.maxZ = Math.max(z1, z2);
}
+ // Paper start
+ public AABB(double minX, double minY, double minZ, double maxX, double maxY, double maxZ, boolean dummy) {
+ this.minX = minX;
+ this.minY = minY;
+ this.minZ = minZ;
+ this.maxX = maxX;
+ this.maxY = maxY;
+ this.maxZ = maxZ;
+ }
+ // Paper end
+
public AABB(BlockPos pos) {
this((double)pos.getX(), (double)pos.getY(), (double)pos.getZ(), (double)(pos.getX() + 1), (double)(pos.getY() + 1), (double)(pos.getZ() + 1));
}
diff --git a/src/main/java/net/minecraft/world/phys/shapes/ArrayVoxelShape.java b/src/main/java/net/minecraft/world/phys/shapes/ArrayVoxelShape.java
index cdb785619b4fce3cb7f0b4a996a15fa43de5f4d1..6db47035fe940ef1f78a14cae6103e22aa1a184e 100644
--- a/src/main/java/net/minecraft/world/phys/shapes/ArrayVoxelShape.java
+++ b/src/main/java/net/minecraft/world/phys/shapes/ArrayVoxelShape.java
@@ -6,6 +6,9 @@ import java.util.Arrays;
import net.minecraft.Util;
import net.minecraft.core.Direction;
+// Paper start
+import it.unimi.dsi.fastutil.doubles.AbstractDoubleList;
+// Paper end
public class ArrayVoxelShape extends VoxelShape {
private final DoubleList xs;
private final DoubleList ys;
@@ -16,6 +19,11 @@ public class ArrayVoxelShape extends VoxelShape {
}
ArrayVoxelShape(DiscreteVoxelShape shape, DoubleList xPoints, DoubleList yPoints, DoubleList zPoints) {
+ // Paper start - optimise multi-aabb shapes
+ this(shape, xPoints, yPoints, zPoints, null, 0.0, 0.0, 0.0);
+ }
+ ArrayVoxelShape(DiscreteVoxelShape shape, DoubleList xPoints, DoubleList yPoints, DoubleList zPoints, net.minecraft.world.phys.AABB[] boundingBoxesRepresentation, double offsetX, double offsetY, double offsetZ) {
+ // Paper end - optimise multi-aabb shapes
super(shape);
int i = shape.getXSize() + 1;
int j = shape.getYSize() + 1;
@@ -27,6 +35,12 @@ public class ArrayVoxelShape extends VoxelShape {
} else {
throw (IllegalArgumentException)Util.pauseInIde(new IllegalArgumentException("Lengths of point arrays must be consistent with the size of the VoxelShape."));
}
+ // Paper start - optimise multi-aabb shapes
+ this.boundingBoxesRepresentation = boundingBoxesRepresentation == null ? this.toAabbs().toArray(EMPTY) : boundingBoxesRepresentation;
+ this.offsetX = offsetX;
+ this.offsetY = offsetY;
+ this.offsetZ = offsetZ;
+ // Paper end - optimise multi-aabb shapes
}
@Override
@@ -42,4 +56,152 @@ public class ArrayVoxelShape extends VoxelShape {
throw new IllegalArgumentException();
}
}
+
+ // Paper start
+ public static final class DoubleListOffsetExposed extends AbstractDoubleList {
+
+ public final DoubleArrayList list;
+ public final double offset;
+
+ public DoubleListOffsetExposed(final DoubleArrayList list, final double offset) {
+ this.list = list;
+ this.offset = offset;
+ }
+
+ @Override
+ public double getDouble(final int index) {
+ return this.list.getDouble(index) + this.offset;
+ }
+
+ @Override
+ public int size() {
+ return this.list.size();
+ }
+ }
+
+ static final net.minecraft.world.phys.AABB[] EMPTY = new net.minecraft.world.phys.AABB[0];
+ final net.minecraft.world.phys.AABB[] boundingBoxesRepresentation;
+
+ final double offsetX;
+ final double offsetY;
+ final double offsetZ;
+
+ public final net.minecraft.world.phys.AABB[] getBoundingBoxesRepresentation() {
+ return this.boundingBoxesRepresentation;
+ }
+
+ public final double getOffsetX() {
+ return this.offsetX;
+ }
+
+ public final double getOffsetY() {
+ return this.offsetY;
+ }
+
+ public final double getOffsetZ() {
+ return this.offsetZ;
+ }
+
+ @Override
+ public java.util.List<net.minecraft.world.phys.AABB> toAabbs() {
+ if (this.boundingBoxesRepresentation == null) {
+ return super.toAabbs();
+ }
+ java.util.List<net.minecraft.world.phys.AABB> ret = new java.util.ArrayList<>(this.boundingBoxesRepresentation.length);
+
+ double offX = this.offsetX;
+ double offY = this.offsetY;
+ double offZ = this.offsetZ;
+
+ for (net.minecraft.world.phys.AABB boundingBox : this.boundingBoxesRepresentation) {
+ ret.add(boundingBox.move(offX, offY, offZ));
+ }
+
+ return ret;
+ }
+
+ protected static DoubleArrayList getList(DoubleList from) {
+ if (from instanceof DoubleArrayList) {
+ return (DoubleArrayList)from;
+ } else {
+ return DoubleArrayList.wrap(from.toDoubleArray());
+ }
+ }
+
+ @Override
+ public VoxelShape move(double x, double y, double z) {
+ if (x == 0.0 && y == 0.0 && z == 0.0) {
+ return this;
+ }
+ DoubleListOffsetExposed xPoints, yPoints, zPoints;
+ double offsetX, offsetY, offsetZ;
+
+ if (this.xs instanceof DoubleListOffsetExposed) {
+ xPoints = new DoubleListOffsetExposed(((DoubleListOffsetExposed)this.xs).list, offsetX = this.offsetX + x);
+ yPoints = new DoubleListOffsetExposed(((DoubleListOffsetExposed)this.ys).list, offsetY = this.offsetY + y);
+ zPoints = new DoubleListOffsetExposed(((DoubleListOffsetExposed)this.zs).list, offsetZ = this.offsetZ + z);
+ } else {
+ xPoints = new DoubleListOffsetExposed(getList(this.xs), offsetX = x);
+ yPoints = new DoubleListOffsetExposed(getList(this.ys), offsetY = y);
+ zPoints = new DoubleListOffsetExposed(getList(this.zs), offsetZ = z);
+ }
+
+ return new ArrayVoxelShape(this.shape, xPoints, yPoints, zPoints, this.boundingBoxesRepresentation, offsetX, offsetY, offsetZ);
+ }
+
+ @Override
+ public final boolean intersects(net.minecraft.world.phys.AABB axisalingedbb) {
+ // this can be optimised by checking an "overall shape" first, but not needed
+ double offX = this.offsetX;
+ double offY = this.offsetY;
+ double offZ = this.offsetZ;
+
+ for (net.minecraft.world.phys.AABB boundingBox : this.boundingBoxesRepresentation) {
+ if (io.papermc.paper.util.CollisionUtil.voxelShapeIntersect(axisalingedbb, boundingBox.minX + offX, boundingBox.minY + offY, boundingBox.minZ + offZ,
+ boundingBox.maxX + offX, boundingBox.maxY + offY, boundingBox.maxZ + offZ)) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ @Override
+ public void forAllBoxes(Shapes.DoubleLineConsumer doubleLineConsumer) {
+ if (this.boundingBoxesRepresentation == null) {
+ super.forAllBoxes(doubleLineConsumer);
+ return;
+ }
+ for (final net.minecraft.world.phys.AABB boundingBox : this.boundingBoxesRepresentation) {
+ doubleLineConsumer.consume(boundingBox.minX + this.offsetX, boundingBox.minY + this.offsetY, boundingBox.minZ + this.offsetZ,
+ boundingBox.maxX + this.offsetX, boundingBox.maxY + this.offsetY, boundingBox.maxZ + this.offsetZ);
+ }
+ }
+
+ @Override
+ public VoxelShape optimize() {
+ if (this == Shapes.empty() || this.boundingBoxesRepresentation.length == 0) {
+ return this;
+ }
+
+ VoxelShape simplified = Shapes.empty();
+ for (final net.minecraft.world.phys.AABB boundingBox : this.boundingBoxesRepresentation) {
+ simplified = Shapes.joinUnoptimized(simplified, Shapes.box(boundingBox.minX + this.offsetX, boundingBox.minY + this.offsetY, boundingBox.minZ + this.offsetZ,
+ boundingBox.maxX + this.offsetX, boundingBox.maxY + this.offsetY, boundingBox.maxZ + this.offsetZ), BooleanOp.OR);
+ }
+
+ if (!(simplified instanceof ArrayVoxelShape)) {
+ return simplified;
+ }
+
+ final net.minecraft.world.phys.AABB[] boundingBoxesRepresentation = ((ArrayVoxelShape)simplified).getBoundingBoxesRepresentation();
+
+ if (boundingBoxesRepresentation.length == 1) {
+ return new io.papermc.paper.voxel.AABBVoxelShape(boundingBoxesRepresentation[0]).optimize();
+ }
+
+ return simplified;
+ }
+ // Paper end
+
}
diff --git a/src/main/java/net/minecraft/world/phys/shapes/Shapes.java b/src/main/java/net/minecraft/world/phys/shapes/Shapes.java
index 9176735c08a75854209f24113b0e78332249dc4d..731c7dd15f131dc124be6af8f342b122cb89491b 100644
--- a/src/main/java/net/minecraft/world/phys/shapes/Shapes.java
+++ b/src/main/java/net/minecraft/world/phys/shapes/Shapes.java
@@ -19,16 +19,17 @@ public final class Shapes {
DiscreteVoxelShape discreteVoxelShape = new BitSetDiscreteVoxelShape(1, 1, 1);
discreteVoxelShape.fill(0, 0, 0);
return new CubeVoxelShape(discreteVoxelShape);
- });
+ }); public static VoxelShape getFullUnoptimisedCube() { return BLOCK; } // Paper - OBFHELPER
public static final VoxelShape INFINITY = box(Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
private static final VoxelShape EMPTY = new ArrayVoxelShape(new BitSetDiscreteVoxelShape(0, 0, 0), (DoubleList)(new DoubleArrayList(new double[]{0.0D})), (DoubleList)(new DoubleArrayList(new double[]{0.0D})), (DoubleList)(new DoubleArrayList(new double[]{0.0D})));
+ public static final io.papermc.paper.voxel.AABBVoxelShape BLOCK_OPTIMISED = new io.papermc.paper.voxel.AABBVoxelShape(new AABB(0.0, 0.0, 0.0, 1.0, 1.0, 1.0)); // Paper
public static VoxelShape empty() {
return EMPTY;
}
public static VoxelShape block() {
- return BLOCK;
+ return BLOCK_OPTIMISED; // Paper
}
public static VoxelShape box(double minX, double minY, double minZ, double maxX, double maxY, double maxZ) {
@@ -41,29 +42,14 @@ public final class Shapes {
public static VoxelShape create(double minX, double minY, double minZ, double maxX, double maxY, double maxZ) {
if (!(maxX - minX < 1.0E-7D) && !(maxY - minY < 1.0E-7D) && !(maxZ - minZ < 1.0E-7D)) {
- int i = findBits(minX, maxX);
- int j = findBits(minY, maxY);
- int k = findBits(minZ, maxZ);
- if (i >= 0 && j >= 0 && k >= 0) {
- if (i == 0 && j == 0 && k == 0) {
- return block();
- } else {
- int l = 1 << i;
- int m = 1 << j;
- int n = 1 << k;
- BitSetDiscreteVoxelShape bitSetDiscreteVoxelShape = BitSetDiscreteVoxelShape.withFilledBounds(l, m, n, (int)Math.round(minX * (double)l), (int)Math.round(minY * (double)m), (int)Math.round(minZ * (double)n), (int)Math.round(maxX * (double)l), (int)Math.round(maxY * (double)m), (int)Math.round(maxZ * (double)n));
- return new CubeVoxelShape(bitSetDiscreteVoxelShape);
- }
- } else {
- return new ArrayVoxelShape(BLOCK.shape, (DoubleList)DoubleArrayList.wrap(new double[]{minX, maxX}), (DoubleList)DoubleArrayList.wrap(new double[]{minY, maxY}), (DoubleList)DoubleArrayList.wrap(new double[]{minZ, maxZ}));
- }
+ return new io.papermc.paper.voxel.AABBVoxelShape(new AABB(minX, minY, minZ, maxX, maxY, maxZ)); // Paper
} else {
return empty();
}
}
public static VoxelShape create(AABB box) {
- return create(box.minX, box.minY, box.minZ, box.maxX, box.maxY, box.maxZ);
+ return new io.papermc.paper.voxel.AABBVoxelShape(box); // Paper
}
@VisibleForTesting
@@ -125,6 +111,20 @@ public final class Shapes {
}
public static boolean joinIsNotEmpty(VoxelShape shape1, VoxelShape shape2, BooleanOp predicate) {
+ // Paper start - optimise voxelshape
+ if (predicate == BooleanOp.AND) {
+ if (shape1 instanceof io.papermc.paper.voxel.AABBVoxelShape && shape2 instanceof io.papermc.paper.voxel.AABBVoxelShape) {
+ return io.papermc.paper.util.CollisionUtil.voxelShapeIntersect(((io.papermc.paper.voxel.AABBVoxelShape)shape1).aabb, ((io.papermc.paper.voxel.AABBVoxelShape)shape2).aabb);
+ } else if (shape1 instanceof io.papermc.paper.voxel.AABBVoxelShape && shape2 instanceof ArrayVoxelShape) {
+ return ((ArrayVoxelShape)shape2).intersects(((io.papermc.paper.voxel.AABBVoxelShape)shape1).aabb);
+ } else if (shape2 instanceof io.papermc.paper.voxel.AABBVoxelShape && shape1 instanceof ArrayVoxelShape) {
+ return ((ArrayVoxelShape)shape1).intersects(((io.papermc.paper.voxel.AABBVoxelShape)shape2).aabb);
+ }
+ }
+ return joinIsNotEmptyVanilla(shape1, shape2, predicate);
+ }
+ public static boolean joinIsNotEmptyVanilla(VoxelShape shape1, VoxelShape shape2, BooleanOp predicate) {
+ // Paper end - optimise voxelshape
if (predicate.apply(false, false)) {
throw (IllegalArgumentException)Util.pauseInIde(new IllegalArgumentException());
} else {
@@ -196,6 +196,43 @@ public final class Shapes {
}
public static VoxelShape getFaceShape(VoxelShape shape, Direction direction) {
+ // Paper start - optimise shape creation here for lighting, as this shape is going to be used
+ // for transparency checks
+ if (shape == BLOCK || shape == BLOCK_OPTIMISED) {
+ return BLOCK_OPTIMISED;
+ } else if (shape == empty()) {
+ return empty();
+ }
+
+ if (shape instanceof io.papermc.paper.voxel.AABBVoxelShape) {
+ final AABB box = ((io.papermc.paper.voxel.AABBVoxelShape)shape).aabb;
+ switch (direction) {
+ case WEST: // -X
+ case EAST: { // +X
+ final boolean useEmpty = direction == Direction.EAST ? !DoubleMath.fuzzyEquals(box.maxX, 1.0, io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON) :
+ !DoubleMath.fuzzyEquals(box.minX, 0.0, io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON);
+ return useEmpty ? empty() : new io.papermc.paper.voxel.AABBVoxelShape(new AABB(0.0, box.minY, box.minZ, 1.0, box.maxY, box.maxZ)).optimize();
+ }
+ case DOWN: // -Y
+ case UP: { // +Y
+ final boolean useEmpty = direction == Direction.UP ? !DoubleMath.fuzzyEquals(box.maxY, 1.0, io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON) :
+ !DoubleMath.fuzzyEquals(box.minY, 0.0, io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON);
+ return useEmpty ? empty() : new io.papermc.paper.voxel.AABBVoxelShape(new AABB(box.minX, 0.0, box.minZ, box.maxX, 1.0, box.maxZ)).optimize();
+ }
+ case NORTH: // -Z
+ case SOUTH: { // +Z
+ final boolean useEmpty = direction == Direction.SOUTH ? !DoubleMath.fuzzyEquals(box.maxZ, 1.0, io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON) :
+ !DoubleMath.fuzzyEquals(box.minZ,0.0, io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON);
+ return useEmpty ? empty() : new io.papermc.paper.voxel.AABBVoxelShape(new AABB(box.minX, box.minY, 0.0, box.maxX, box.maxY, 1.0)).optimize();
+ }
+ }
+ }
+
+ // fall back to vanilla
+ return getFaceShapeVanilla(shape, direction);
+ }
+ public static VoxelShape getFaceShapeVanilla(VoxelShape shape, Direction direction) {
+ // Paper end
if (shape == block()) {
return block();
} else {
@@ -210,7 +247,7 @@ public final class Shapes {
i = 0;
}
- return (VoxelShape)(!bl ? empty() : new SliceShape(shape, axis, i));
+ return (VoxelShape)(!bl ? empty() : new SliceShape(shape, axis, i).optimize().optimize()); // Paper - first optimize converts to ArrayVoxelShape, second optimize could convert to AABBVoxelShape
}
}
@@ -235,6 +272,53 @@ public final class Shapes {
}
public static boolean faceShapeOccludes(VoxelShape one, VoxelShape two) {
+ // Paper start - try to optimise for the case where the shapes do _not_ occlude
+ // which is _most_ of the time in lighting
+ if (one == getFullUnoptimisedCube() || one == BLOCK_OPTIMISED
+ || two == getFullUnoptimisedCube() || two == BLOCK_OPTIMISED) {
+ return true;
+ }
+ boolean v1Empty = one == empty();
+ boolean v2Empty = two == empty();
+ if (v1Empty && v2Empty) {
+ return false;
+ }
+ if ((one instanceof io.papermc.paper.voxel.AABBVoxelShape || v1Empty)
+ && (two instanceof io.papermc.paper.voxel.AABBVoxelShape || v2Empty)) {
+ if (!v1Empty && !v2Empty && (one != two)) {
+ AABB boundingBox1 = ((io.papermc.paper.voxel.AABBVoxelShape)one).aabb;
+ AABB boundingBox2 = ((io.papermc.paper.voxel.AABBVoxelShape)two).aabb;
+ // can call it here in some cases
+
+ // check overall bounding box
+ double minY = Math.min(boundingBox1.minY, boundingBox2.minY);
+ double maxY = Math.max(boundingBox1.maxY, boundingBox2.maxY);
+ if (minY > io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON || maxY < (1 - io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON)) {
+ return false;
+ }
+ double minX = Math.min(boundingBox1.minX, boundingBox2.minX);
+ double maxX = Math.max(boundingBox1.maxX, boundingBox2.maxX);
+ if (minX > io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON || maxX < (1 - io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON)) {
+ return false;
+ }
+ double minZ = Math.min(boundingBox1.minZ, boundingBox2.minZ);
+ double maxZ = Math.max(boundingBox1.maxZ, boundingBox2.maxZ);
+ if (minZ > io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON || maxZ < (1 - io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON)) {
+ return false;
+ }
+ // fall through to full merge check
+ } else {
+ AABB boundingBox = v1Empty ? ((io.papermc.paper.voxel.AABBVoxelShape)two).aabb : ((io.papermc.paper.voxel.AABBVoxelShape)one).aabb;
+ // check if the bounding box encloses the full cube
+ return (boundingBox.minY <= io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON && boundingBox.maxY >= (1 - io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON)) &&
+ (boundingBox.minX <= io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON && boundingBox.maxX >= (1 - io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON)) &&
+ (boundingBox.minZ <= io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON && boundingBox.maxZ >= (1 - io.papermc.paper.util.CollisionUtil.COLLISION_EPSILON));
+ }
+ }
+ return faceShapeOccludesVanilla(one, two);
+ }
+ public static boolean faceShapeOccludesVanilla(VoxelShape one, VoxelShape two) {
+ // Paper end
if (one != block() && two != block()) {
if (one.isEmpty() && two.isEmpty()) {
return false;
diff --git a/src/main/java/net/minecraft/world/phys/shapes/VoxelShape.java b/src/main/java/net/minecraft/world/phys/shapes/VoxelShape.java
index c4ca051720f790f5b8eb860b14e268de8557454d..2182afd1b95acf14c55bddfeec17dae0a63e1f00 100644
--- a/src/main/java/net/minecraft/world/phys/shapes/VoxelShape.java
+++ b/src/main/java/net/minecraft/world/phys/shapes/VoxelShape.java
@@ -16,11 +16,17 @@ import net.minecraft.world.phys.BlockHitResult;
import net.minecraft.world.phys.Vec3;
public abstract class VoxelShape {
- protected final DiscreteVoxelShape shape;
+ public final DiscreteVoxelShape shape; // Paper - public
@Nullable
private VoxelShape[] faces;
- VoxelShape(DiscreteVoxelShape voxels) {
+ // Paper start
+ public boolean intersects(AABB shape) {
+ return Shapes.joinIsNotEmpty(this, new io.papermc.paper.voxel.AABBVoxelShape(shape), BooleanOp.AND);
+ }
+ // Paper end
+
+ protected VoxelShape(DiscreteVoxelShape voxels) { // Paper - protected
this.shape = voxels;
}
@@ -163,7 +169,7 @@ public abstract class VoxelShape {
}
}
- private VoxelShape calculateFace(Direction direction) {
+ protected VoxelShape calculateFace(Direction direction) { // Paper
Direction.Axis axis = direction.getAxis();
DoubleList doubleList = this.getCoords(axis);
if (doubleList.size() == 2 && DoubleMath.fuzzyEquals(doubleList.getDouble(0), 0.0D, 1.0E-7D) && DoubleMath.fuzzyEquals(doubleList.getDouble(1), 1.0D, 1.0E-7D)) {
|