patches

patches/removed/1.17/0486-Implement-Chunk-Priority-Urgency-System-for-Chunks.patch

@@ -22,6 +22,8 @@ view distance holds on you.
 Chunks in front of the player have higher priority, to help with
 fast traveling players keep up with their movement.
 
+1.17 update note: very big diff skipping for now, still needs to be updated
+
 diff --git a/src/main/java/com/destroystokyo/paper/io/chunk/ChunkTaskManager.java b/src/main/java/com/destroystokyo/paper/io/chunk/ChunkTaskManager.java
 index 499aff1f1e1ffc01ba8f9de43ca17899525a306f..97b85587525ddb62af9bfc8785b48727a6135599 100644
 --- a/src/main/java/com/destroystokyo/paper/io/chunk/ChunkTaskManager.java

patches/removed/1.17/0488-Improve-Chunk-Status-Transition-Speed.patch

@@ -3,6 +3,10 @@ From: Aikar <aikar@aikar.co>
 Date: Fri, 29 May 2020 23:32:14 -0400
 Subject: [PATCH] Improve Chunk Status Transition Speed
 
+
+1.17 Update note: Depends on not yet applied patch: Implement Chunk Priority / Urgency System for Chunks
+
+
 When a chunk is loaded from disk that has already been generated,
 the server has to promote the chunk through the system to reach
 it's current desired status level.

patches/server-remapped/0491-Use-seed-based-lookup-for-Treasure-Maps-Fixes-lag-fr.patch

@@ -1,35 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Sun, 7 Jun 2020 19:25:13 -0400
-Subject: [PATCH] Use seed based lookup for Treasure Maps - Fixes lag from
- carto/sunken maps
-
-
-diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
-index bf4e50cd1d561456c033cda2d5c5487c5e3fe1eb..61aee2c109614a014149ae5a15ad2a28c796cb9d 100644
---- a/src/main/java/net/minecraft/server/level/ServerLevel.java
-+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -415,8 +415,8 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl
-         this.worldDataServer.setThundering(thundering);
-     }
- 
--    @Override
--    public Biome getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
-+    public Biome getBiomeBySeed(int i, int j, int k) { return getUncachedNoiseBiome(i, j, k); } // Paper - OBFHELPER
-+    @Override public Biome getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
-         return this.getChunkSource().getGenerator().getBiomeSource().getNoiseBiome(biomeX, biomeY, biomeZ);
-     }
- 
-diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
-index 05759dc6edaa790a5e3f2ca2e0ae27e53cfa4397..550892bc769a58991583b16295a72a162ceea788 100644
---- a/src/main/java/net/minecraft/world/item/MapItem.java
-+++ b/src/main/java/net/minecraft/world/item/MapItem.java
-@@ -252,7 +252,7 @@ public class MapItem extends ComplexItem {
- 
-                 for (l = 0; l < 128 * i; ++l) {
-                     for (i1 = 0; i1 < 128 * i; ++i1) {
--                        abiomebase[l * 128 * i + i1] = worldserver.getBiome(new BlockPos((j / i - 64) * i + i1, 0, (k / i - 64) * i + l));
-+                        abiomebase[l * 128 * i + i1] = worldserver.getBiomeBySeed((j / i - 64) * i + i1, 0, (k / i - 64) * i + l); // Paper
-                     }
-                 }
- 

patches/server/0366-implement-optional-per-player-mob-spawns.patch

@@ -665,7 +665,7 @@ index bffc897cb88a54c36432c98264f3416051aeab17..14a0190ea5e9a387582736bb130c16a3
  
      // Yes, this doesn't match Vanilla, but it's the best we can do for now.
 diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
-index 19d0ed5ff8569b0280117750f9ce05095afd9f70..490ff09c3c4f93dcafc1703b1df3fb2f7333add2 100644
+index 19d0ed5ff8569b0280117750f9ce05095afd9f70..55b937f802ee7066cb13b9a497932038b2905ff0 100644
 --- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
 +++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
 @@ -17,6 +17,7 @@ import net.minecraft.core.Registry;
@@ -778,7 +778,15 @@ index 19d0ed5ff8569b0280117750f9ce05095afd9f70..490ff09c3c4f93dcafc1703b1df3fb2f
              int k = 0;
  
              while (k < 3) {
-@@ -248,7 +289,7 @@ public final class NaturalSpawner {
+@@ -241,14 +282,14 @@ public final class NaturalSpawner {
+                                     // Paper start
+                                     Boolean doSpawning = isValidSpawnPostitionForType(world, group, structuremanager, chunkgenerator, biomesettingsmobs_c, blockposition_mutableblockposition, d2);
+                                     if (doSpawning == null) {
+-                                        return;
++                                        return j; // Paper
+                                     }
+                                     if (doSpawning && checker.test(biomesettingsmobs_c.type, blockposition_mutableblockposition, chunk)) {
+                                         // Paper end
                                          Mob entityinsentient = NaturalSpawner.getMobForSpawn(world, biomesettingsmobs_c.type);
  
                                          if (entityinsentient == null) {

patches/server/0441-Optimize-sending-packets-to-nearby-locations-sounds-.patch

@@ -11,10 +11,10 @@ This will drastically cut down on packet sending cost for worlds with
 lots of players in them.
 
 diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
-index 168895dab31a0d5356eb96f2642399a1c99fccab..713cc88dd067c0d918f253b1845f42c0d9eb920f 100644
+index c4242a1602bbb02541c330bc02016f15c8644358..7eb3088d47ff78198e01a3a12b0ce6abe9d6ca6b 100644
 --- a/src/main/java/net/minecraft/server/players/PlayerList.java
 +++ b/src/main/java/net/minecraft/server/players/PlayerList.java
-@@ -1149,16 +1149,40 @@ public abstract class PlayerList {
+@@ -1129,16 +1129,40 @@ public abstract class PlayerList {
      }
  
      public void broadcast(@Nullable net.minecraft.world.entity.player.Player player, double x, double y, double z, double distance, ResourceKey<Level> worldKey, Packet<?> packet) {
@@ -32,7 +32,7 @@ index 168895dab31a0d5356eb96f2642399a1c99fccab..713cc88dd067c0d918f253b1845f42c0
 +        if (world == null) {
 +            world = server.getLevel(worldKey);
 +        }
-+        ChunkMap chunkMap = world != null ? world.getChunkSource().chunkMap : null;
++        net.minecraft.server.level.ChunkMap chunkMap = world != null ? world.getChunkSource().chunkMap : null;
 +        Object[] backingSet;
 +        if (chunkMap == null) {
 +            // Really shouldn't happen...

patches/server/0442-Fix-villager-trading-demand-MC-163962.patch

@@ -6,7 +6,7 @@ Subject: [PATCH] Fix villager trading demand - MC-163962
 Prevent demand from going negative and tending to negative infinity
 
 diff --git a/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java b/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
-index 9ce1c1092970618a204f87c673144152afbade99..fa74813e0fe76612023830b2fc41d41aa0b4f10e 100644
+index 3a59f610145504a096ccf4793ea4140120b00f48..75827fcad36a551d832f4be094167936092b6caf 100644
 --- a/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
 +++ b/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
 @@ -109,7 +109,7 @@ public class MerchantOffer {

patches/server/0443-Maps-shouldn-t-load-chunks.patch

@@ -15,10 +15,10 @@ Previously maps would load all chunks in a certain radius depending on
  five ticks that movement occur in anyways.
 
 diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
-index 1736d2eb33e5f2221210a0a4f3ceb8905555a162..05759dc6edaa790a5e3f2ca2e0ae27e53cfa4397 100644
+index 044111a5ea88d3f938c08b027ac6836355eff7c2..994a3c0253c7298fef1471736b74bd34ec87738a 100644
 --- a/src/main/java/net/minecraft/world/item/MapItem.java
 +++ b/src/main/java/net/minecraft/world/item/MapItem.java
-@@ -119,9 +119,9 @@ public class MapItem extends ComplexItem {
+@@ -132,9 +132,9 @@ public class MapItem extends ComplexItem {
                              int k2 = (j / i + k1 - 64) * i;
                              int l2 = (k / i + l1 - 64) * i;
                              Multiset<MaterialColor> multiset = LinkedHashMultiset.create();

patches/server/0444-Use-seed-based-lookup-for-Treasure-Maps-Fixes-lag-fr.patch

@@ -0,0 +1,20 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sun, 7 Jun 2020 19:25:13 -0400
+Subject: [PATCH] Use seed based lookup for Treasure Maps - Fixes lag from
+ carto/sunken maps
+
+
+diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
+index 994a3c0253c7298fef1471736b74bd34ec87738a..305c0b0ca23eea6b8b32778a4bbe8a2eacc78107 100644
+--- a/src/main/java/net/minecraft/world/item/MapItem.java
++++ b/src/main/java/net/minecraft/world/item/MapItem.java
+@@ -258,7 +258,7 @@ public class MapItem extends ComplexItem {
+ 
+                 for (l = 0; l < 128 * i; ++l) {
+                     for (i1 = 0; i1 < 128 * i; ++i1) {
+-                        abiomebase[l * 128 * i + i1] = world.getBiome(new BlockPos((j / i - 64) * i + i1, 0, (k / i - 64) * i + l));
++                        abiomebase[l * 128 * i + i1] = world.getUncachedNoiseBiome((j / i - 64) * i + i1, 0, (k / i - 64) * i + l); // Paper
+                     }
+                 }
+ 

patches/server/0445-Optimize-Bit-Operations-by-inlining.patch

@@ -7,25 +7,26 @@ Inline bit operations and reduce instruction count to make these hot
 operations faster
 
 diff --git a/src/main/java/net/minecraft/core/BlockPos.java b/src/main/java/net/minecraft/core/BlockPos.java
-index 595abf528a7862478100770987906af1b13439fe..727af6ac84075db87615ebac51a024e6376fa3cb 100644
+index dd1d76867ac3832ad515f304925c595c9a021c8f..fd5c22a3d281d8d913c353c8a668ec51b885066a 100644
 --- a/src/main/java/net/minecraft/core/BlockPos.java
 +++ b/src/main/java/net/minecraft/core/BlockPos.java
-@@ -31,14 +31,16 @@ public class BlockPos extends Vec3i {
+@@ -30,15 +30,16 @@ public class BlockPos extends Vec3i {
      }).stable();
      private static final Logger LOGGER = LogManager.getLogger();
      public static final BlockPos ZERO = new BlockPos(0, 0, 0);
 -    private static final int PACKED_X_LENGTH = 1 + Mth.log2(Mth.smallestEncompassingPowerOfTwo(30000000));
--    private static final int PACKED_Z_LENGTH = BlockPos.PACKED_X_LENGTH;
+-    private static final int PACKED_Z_LENGTH = PACKED_X_LENGTH;
--    private static final int PACKED_Y_LENGTH = 64 - BlockPos.PACKED_X_LENGTH - BlockPos.PACKED_Z_LENGTH;
+-    public static final int PACKED_Y_LENGTH = 64 - PACKED_X_LENGTH - PACKED_Z_LENGTH;
--    private static final long PACKED_X_MASK = (1L << BlockPos.PACKED_X_LENGTH) - 1L;
+-    private static final long PACKED_X_MASK = (1L << PACKED_X_LENGTH) - 1L;
--    private static final long PACKED_Y_MASK = (1L << BlockPos.PACKED_Y_LENGTH) - 1L;
+-    private static final long PACKED_Y_MASK = (1L << PACKED_Y_LENGTH) - 1L;
--    private static final long PACKED_Z_MASK = (1L << BlockPos.PACKED_Z_LENGTH) - 1L;
+-    private static final long PACKED_Z_MASK = (1L << PACKED_Z_LENGTH) - 1L;
--    private static final int Z_OFFSET = BlockPos.PACKED_Y_LENGTH;
+-    private static final int Y_OFFSET = 0;
--    private static final int X_OFFSET = BlockPos.PACKED_Y_LENGTH + BlockPos.PACKED_Z_LENGTH;
+-    private static final int Z_OFFSET = PACKED_Y_LENGTH;
+-    private static final int X_OFFSET = PACKED_Y_LENGTH + PACKED_Z_LENGTH;
 +    // Paper start - static constants
 +    private static final int PACKED_X_LENGTH = 26;
 +    private static final int PACKED_Z_LENGTH = 26;
-+    private static final int PACKED_Y_LENGTH = 12;
++    public static final int PACKED_Y_LENGTH = 12;
 +    private static final long PACKED_X_MASK = 67108863;
 +    private static final long PACKED_Y_MASK = 4095;
 +    private static final long PACKED_Z_MASK = 67108863;
@@ -35,7 +36,7 @@ index 595abf528a7862478100770987906af1b13439fe..727af6ac84075db87615ebac51a024e6
  
      public BlockPos(int x, int y, int z) {
          super(x, y, z);
-@@ -60,28 +62,29 @@ public class BlockPos extends Vec3i {
+@@ -60,28 +61,29 @@ public class BlockPos extends Vec3i {
          this(pos.getX(), pos.getY(), pos.getZ());
      }
  
@@ -50,17 +51,17 @@ index 595abf528a7862478100770987906af1b13439fe..727af6ac84075db87615ebac51a024e6
      }
  
      public static int getX(long packedPos) {
--        return (int) (packedPos << 64 - BlockPos.X_OFFSET - BlockPos.PACKED_X_LENGTH >> 64 - BlockPos.PACKED_X_LENGTH);
+-        return (int)(packedPos << 64 - X_OFFSET - PACKED_X_LENGTH >> 64 - PACKED_X_LENGTH);
 +        return (int) (packedPos >> 38); // Paper - simplify/inline
      }
  
      public static int getY(long packedPos) {
--        return (int) (packedPos << 64 - BlockPos.PACKED_Y_LENGTH >> 64 - BlockPos.PACKED_Y_LENGTH);
+-        return (int)(packedPos << 64 - PACKED_Y_LENGTH >> 64 - PACKED_Y_LENGTH);
 +        return (int) ((packedPos << 52) >> 52); // Paper - simplify/inline
      }
  
      public static int getZ(long packedPos) {
--        return (int) (packedPos << 64 - BlockPos.Z_OFFSET - BlockPos.PACKED_Z_LENGTH >> 64 - BlockPos.PACKED_Z_LENGTH);
+-        return (int)(packedPos << 64 - Z_OFFSET - PACKED_Z_LENGTH >> 64 - PACKED_Z_LENGTH);
 +        return (int) ((packedPos << 26) >> 38);  // Paper - simplify/inline
      }
  
@@ -70,25 +71,23 @@ index 595abf528a7862478100770987906af1b13439fe..727af6ac84075db87615ebac51a024e6
      }
  
      public long asLong() {
-@@ -90,12 +93,7 @@ public class BlockPos extends Vec3i {
+@@ -89,10 +91,7 @@ public class BlockPos extends Vec3i {
+     }
  
-     public static long asLong(int x, int y, int z) { return asLong(x, y, z); } // Paper - OBFHELPER
      public static long asLong(int x, int y, int z) {
 -        long l = 0L;
--
+-        l = l | ((long)x & PACKED_X_MASK) << X_OFFSET;
--        l |= ((long) x & BlockPos.PACKED_X_MASK) << BlockPos.X_OFFSET;
+-        l = l | ((long)y & PACKED_Y_MASK) << 0;
--        l |= ((long) y & BlockPos.PACKED_Y_MASK) << 0;
+-        return l | ((long)z & PACKED_Z_MASK) << Z_OFFSET;
--        l |= ((long) z & BlockPos.PACKED_Z_MASK) << BlockPos.Z_OFFSET;
--        return l;
 +        return (((long) x & (long) 67108863) << 38) | (((long) y & (long) 4095)) | (((long) z & (long) 67108863) << 12); // Paper - inline constants and simplify
      }
  
      public static long getFlatIndex(long y) {
 diff --git a/src/main/java/net/minecraft/core/SectionPos.java b/src/main/java/net/minecraft/core/SectionPos.java
-index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde38206c7dd 100644
+index 4ea92289304bdad469e67164442bc0b837183e8a..b0c39895e10fab5acc609128d34aafdebc5520f9 100644
 --- a/src/main/java/net/minecraft/core/SectionPos.java
 +++ b/src/main/java/net/minecraft/core/SectionPos.java
-@@ -19,7 +19,7 @@ public class SectionPos extends Vec3i {
+@@ -37,7 +37,7 @@ public class SectionPos extends Vec3i {
      }
  
      public static SectionPos of(BlockPos pos) {
@@ -97,7 +96,7 @@ index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde3
      }
  
      public static SectionPos of(ChunkPos chunkPos, int y) {
-@@ -31,15 +31,23 @@ public class SectionPos extends Vec3i {
+@@ -49,7 +49,7 @@ public class SectionPos extends Vec3i {
      }
  
      public static SectionPos of(long packed) {
@@ -105,7 +104,8 @@ index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde3
 +        return new SectionPos((int) (packed >> 42), (int) (packed << 44 >> 44), (int) (packed << 22 >> 42)); // Paper
      }
  
-     public static long offset(long packed, Direction direction) {
+     public static SectionPos bottomOf(ChunkAccess chunk) {
+@@ -60,8 +60,16 @@ public class SectionPos extends Vec3i {
          return offset(packed, direction.getStepX(), direction.getStepY(), direction.getStepZ());
      }
  
@@ -122,48 +122,45 @@ index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde3
 +        return (((long) ((int) (packed >> 42) + x) & 4194303L) << 42) | (((long) ((int) (packed << 44 >> 44) + y) & 1048575L)) | (((long) ((int) (packed << 22 >> 42) + z) & 4194303L) << 20); // Simplify to reduce instruction count
      }
  
-     public static int blockToSectionCoord(int coord) {
+     public static int posToSectionCoord(double coord) {
-@@ -51,11 +59,7 @@ public class SectionPos extends Vec3i {
+@@ -77,10 +85,7 @@ public class SectionPos extends Vec3i {
      }
  
      public static short sectionRelativePos(BlockPos pos) {
 -        int i = sectionRelative(pos.getX());
 -        int j = sectionRelative(pos.getY());
 -        int k = sectionRelative(pos.getZ());
--
+-        return (short)(i << 8 | k << 4 | j << 0);
--        return (short) (i << 8 | k << 4 | j << 0);
 +        return (short) ((pos.getX() & 15) << 8 | (pos.getZ() & 15) << 4 | pos.getY() & 15); // Paper - simplify/inline
      }
  
      public static int sectionRelativeX(short packedLocalPos) {
-@@ -114,16 +118,16 @@ public class SectionPos extends Vec3i {
+@@ -143,16 +148,16 @@ public class SectionPos extends Vec3i {
          return this.getZ();
      }
  
 -    public int minBlockX() {
--        return this.x() << 4;
+-        return sectionToBlockCoord(this.x());
-+    public final int minBlockX() { // Paper
++    public final int minBlockX() { // Paper - make final
-+        return this.getX() << 4; // Paper
++        return this.getX() << 4; // Paper - inline
      }
  
 -    public int minBlockY() {
--        return this.y() << 4;
+-        return sectionToBlockCoord(this.y());
-+    public final int minBlockY() { // Paper
++    public final int minBlockY() { // Paper - make final
-+        return this.getY() << 4; // Paper
++        return this.getY() << 4; // Paper - inline
      }
  
 -    public int minBlockZ() {
--        return this.z() << 4;
+-        return sectionToBlockCoord(this.z());
-+    public final int minBlockZ() { // Paper
++    public int minBlockZ() { // Paper - make final
-+        return this.getZ() << 4; // Paper
++        return this.getZ() << 4; // Paper - inline
      }
  
      public int maxBlockX() {
-@@ -138,8 +142,10 @@ public class SectionPos extends Vec3i {
+@@ -168,7 +173,8 @@ public class SectionPos extends Vec3i {
-         return (this.z() << 4) + 15;
      }
  
-+    public static long blockToSection(long i) { return blockToSection(i); } // Paper - OBFHELPER
      public static long blockToSection(long blockPos) {
 -        return asLong(blockToSectionCoord(BlockPos.getX(blockPos)), blockToSectionCoord(BlockPos.getY(blockPos)), blockToSectionCoord(BlockPos.getZ(blockPos)));
 +        // b(a(BlockPosition.b(i)), a(BlockPosition.c(i)), a(BlockPosition.d(i)));
@@ -171,8 +168,8 @@ index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde3
      }
  
      public static long getZeroNode(long pos) {
-@@ -160,17 +166,18 @@ public class SectionPos extends Vec3i {
+@@ -192,15 +198,18 @@ public class SectionPos extends Vec3i {
-         return new ChunkPos(this.x(), this.z());
+         return asLong(blockToSectionCoord(pos.getX()), blockToSectionCoord(pos.getY()), blockToSectionCoord(pos.getZ()));
      }
  
 +    // Paper start
@@ -180,14 +177,12 @@ index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde3
 +        return (((long) (i >> 4) & 4194303L) << 42) | (((long) (j >> 4) & 1048575L)) | (((long) (k >> 4) & 4194303L) << 20);
 +    }
 +    // Paper end
-+    public static long asLong(int i, int j, int k) { return asLong(i, j, k); } // Paper - OBFHELPER
++
      public static long asLong(int x, int y, int z) {
 -        long l = 0L;
--
+-        l = l | ((long)x & 4194303L) << 42;
--        l |= ((long) x & 4194303L) << 42;
+-        l = l | ((long)y & 1048575L) << 0;
--        l |= ((long) y & 1048575L) << 0;
+-        return l | ((long)z & 4194303L) << 20;
--        l |= ((long) z & 4194303L) << 20;
--        return l;
 +        return (((long) x & 4194303L) << 42) | (((long) y & 1048575L)) | (((long) z & 4194303L) << 20); // Paper - Simplify to reduce instruction count
      }
  
@@ -196,25 +191,23 @@ index 700e0d7b132242bd65d13ec61c1f7036905b2767..c4bf1bc383fbdfb8ec997883aececde3
 +        return (((long) getX() & 4194303L) << 42) | (((long) getY() & 1048575L)) | (((long) getZ() & 4194303L) << 20); // Paper - Simplify to reduce instruction count
      }
  
-     public Stream<BlockPos> blocksInside() {
+     @Override
-@@ -178,18 +185,11 @@ public class SectionPos extends Vec3i {
+@@ -213,16 +222,11 @@ public class SectionPos extends Vec3i {
      }
  
      public static Stream<SectionPos> cube(SectionPos center, int radius) {
--        int j = center.x();
+-        int i = center.x();
--        int k = center.y();
+-        int j = center.y();
--        int l = center.z();
+-        int k = center.z();
--
+-        return betweenClosedStream(i - radius, j - radius, k - radius, i + radius, j + radius, k + radius);
--        return betweenClosedStream(j - radius, k - radius, l - radius, j + radius, k + radius, l + radius);
 +        return betweenClosedStream(center.getX() - radius, center.getY() - radius, center.getZ() - radius, center.getX() + radius, center.getY() + radius, center.getZ() + radius); // Paper - simplify/inline
      }
  
-     public static Stream<SectionPos> aroundChunk(ChunkPos center, int radius) {
+     public static Stream<SectionPos> aroundChunk(ChunkPos center, int radius, int minY, int maxY) {
--        int j = center.x;
+-        int i = center.x;
--        int k = center.z;
+-        int j = center.z;
--
+-        return betweenClosedStream(i - radius, minY, j - radius, i + radius, maxY - 1, j + radius);
--        return betweenClosedStream(j - radius, 0, k - radius, j + radius, 15, k + radius);
 +        return betweenClosedStream(center.x - radius, 0, center.z - radius, center.x + radius, 15, center.z + radius); // Paper - simplify/inline
      }
  
-     public static Stream<SectionPos> betweenClosedStream(final int minX, final int minY, final int minZ, final int maxX, final int maxY, final int maxZ) {
+     public static Stream<SectionPos> betweenClosedStream(int minX, int minY, int minZ, int maxX, int maxY, int maxZ) {