Use AreaMap for per-player mob spawning (#7235)

patches/server/0364-implement-optional-per-player-mob-spawns.patch

@@ -4,26 +4,6 @@ Date: Mon, 19 Aug 2019 01:27:58 +0500
 Subject: [PATCH] implement optional per player mob spawns
 
 
-diff --git a/src/main/java/co/aikar/timings/WorldTimingsHandler.java b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
-index fe79c0add4f7cb18d487c5bb9415c40c5b551ea2..8d9ddad1879e7616d980ca70de8aecacaa86db35 100644
---- a/src/main/java/co/aikar/timings/WorldTimingsHandler.java
-+++ b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
-@@ -57,6 +57,7 @@ public class WorldTimingsHandler {
- 
- 
-     public final Timing miscMobSpawning;
-+    public final Timing playerMobDistanceMapUpdate;
- 
-     public final Timing poiUnload;
-     public final Timing chunkUnload;
-@@ -121,6 +122,7 @@ public class WorldTimingsHandler {
- 
- 
-         miscMobSpawning = Timings.ofSafe(name + "Mob spawning - Misc");
-+        playerMobDistanceMapUpdate = Timings.ofSafe(name + "Per Player Mob Spawning - Distance Map Update");
- 
-         poiUnload = Timings.ofSafe(name + "Chunk unload - POI");
-         chunkUnload = Timings.ofSafe(name + "Chunk unload - Chunk");
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 index 619f5c11ae8e21b060b52b60d681db6dd9cb5816..88d140a03b6f28070b2f78588ee5ce4d5ac3cf0f 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -41,264 +21,6 @@ index 619f5c11ae8e21b060b52b60d681db6dd9cb5816..88d140a03b6f28070b2f78588ee5ce4d
 +        perPlayerMobSpawns = getBoolean("per-player-mob-spawns", true);
 +    }
  }
-diff --git a/src/main/java/com/destroystokyo/paper/util/PlayerMobDistanceMap.java b/src/main/java/com/destroystokyo/paper/util/PlayerMobDistanceMap.java
-new file mode 100644
-index 0000000000000000000000000000000000000000..72063ba7fb0d04594043cb07034590d597c3d77e
---- /dev/null
-+++ b/src/main/java/com/destroystokyo/paper/util/PlayerMobDistanceMap.java
-@@ -0,0 +1,252 @@
-+package com.destroystokyo.paper.util;
-+
-+import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
-+import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
-+import it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet;
-+import java.util.List;
-+import java.util.Map;
-+import net.minecraft.core.SectionPos;
-+import net.minecraft.server.level.ServerPlayer;
-+import net.minecraft.world.level.ChunkPos;
-+import org.spigotmc.AsyncCatcher;
-+import java.util.HashMap;
-+
-+/** @author Spottedleaf */
-+public final class PlayerMobDistanceMap {
-+
-+    private static final PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> EMPTY_SET = new PooledHashSets.PooledObjectLinkedOpenHashSet<>();
-+
-+    private final Map<ServerPlayer, SectionPos> players = new HashMap<>();
-+    // we use linked for better iteration.
-+    private final Long2ObjectOpenHashMap<PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer>> playerMap = new Long2ObjectOpenHashMap<>(32, 0.5f);
-+    private int viewDistance;
-+
-+    private final PooledHashSets<ServerPlayer> pooledHashSets = new PooledHashSets<>();
-+
-+    public PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> getPlayersInRange(final ChunkPos chunkPos) {
-+        return this.getPlayersInRange(chunkPos.x, chunkPos.z);
-+    }
-+
-+    public PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> getPlayersInRange(final int chunkX, final int chunkZ) {
-+        return this.playerMap.getOrDefault(ChunkPos.asLong(chunkX, chunkZ), EMPTY_SET);
-+    }
-+
-+    public void update(final List<ServerPlayer> currentPlayers, final int newViewDistance) {
-+        AsyncCatcher.catchOp("Distance map update");
-+        final ObjectLinkedOpenHashSet<ServerPlayer> gone = new ObjectLinkedOpenHashSet<>(this.players.keySet());
-+
-+        final int oldViewDistance = this.viewDistance;
-+        this.viewDistance = newViewDistance;
-+
-+        for (final ServerPlayer player : currentPlayers) {
-+            if (player.isSpectator() || !player.affectsSpawning) {
-+                continue; // will be left in 'gone' (or not added at all)
-+            }
-+
-+            gone.remove(player);
-+
-+            final SectionPos newPosition = player.getLastSectionPos();
-+            final SectionPos oldPosition = this.players.put(player, newPosition);
-+
-+            if (oldPosition == null) {
-+                this.addNewPlayer(player, newPosition, newViewDistance);
-+            } else {
-+                this.updatePlayer(player, oldPosition, newPosition, oldViewDistance, newViewDistance);
-+            }
-+            //this.validatePlayer(player, newViewDistance); // debug only
-+        }
-+
-+        for (final ServerPlayer player : gone) {
-+            final SectionPos oldPosition = this.players.remove(player);
-+            if (oldPosition != null) {
-+                this.removePlayer(player, oldPosition, oldViewDistance);
-+            }
-+        }
-+    }
-+
-+    // expensive op, only for debug
-+    private void validatePlayer(final ServerPlayer player, final int viewDistance) {
-+        int entiesGot = 0;
-+        int expectedEntries = (2 * viewDistance + 1);
-+        expectedEntries *= expectedEntries;
-+
-+        final SectionPos currPosition = player.getLastSectionPos();
-+
-+        final int centerX = currPosition.getX();
-+        final int centerZ = currPosition.getZ();
-+
-+        for (final Long2ObjectLinkedOpenHashMap.Entry<PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer>> entry : this.playerMap.long2ObjectEntrySet()) {
-+            final long key = entry.getLongKey();
-+            final PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> map = entry.getValue();
-+
-+            if (map.referenceCount == 0) {
-+                throw new IllegalStateException("Invalid map");
-+            }
-+
-+            if (map.set.contains(player)) {
-+                ++entiesGot;
-+
-+                final int chunkX = ChunkPos.getX(key);
-+                final int chunkZ = ChunkPos.getZ(key);
-+
-+                final int dist = Math.max(Math.abs(chunkX - centerX), Math.abs(chunkZ - centerZ));
-+
-+                if (dist > viewDistance) {
-+                    throw new IllegalStateException("Expected view distance " + viewDistance + ", got " + dist);
-+                }
-+            }
-+        }
-+
-+        if (entiesGot != expectedEntries) {
-+            throw new IllegalStateException("Expected " + expectedEntries + ", got " + entiesGot);
-+        }
-+    }
-+
-+    private void addPlayerTo(final ServerPlayer player, final int chunkX, final int chunkZ) {
-+       this.playerMap.compute(ChunkPos.asLong(chunkX, chunkZ), (final Long key, final PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> players) -> {
-+           if (players == null) {
-+               return player.cachedSingleMobDistanceMap;
-+           } else {
-+               return PlayerMobDistanceMap.this.pooledHashSets.findMapWith(players, player);
-+           }
-+        });
-+    }
-+
-+    private void removePlayerFrom(final ServerPlayer player, final int chunkX, final int chunkZ) {
-+        this.playerMap.compute(ChunkPos.asLong(chunkX, chunkZ), (final Long keyInMap, final PooledHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> players) -> {
-+            return PlayerMobDistanceMap.this.pooledHashSets.findMapWithout(players, player); // rets null instead of an empty map
-+        });
-+    }
-+
-+    private void updatePlayer(final ServerPlayer player, final SectionPos oldPosition, final SectionPos newPosition, final int oldViewDistance, final int newViewDistance) {
-+        final int toX = newPosition.getX();
-+        final int toZ = newPosition.getZ();
-+        final int fromX = oldPosition.getX();
-+        final int fromZ = oldPosition.getZ();
-+
-+        final int dx = toX - fromX;
-+        final int dz = toZ - fromZ;
-+
-+        final int totalX = Math.abs(fromX - toX);
-+        final int totalZ = Math.abs(fromZ - toZ);
-+
-+        if (Math.max(totalX, totalZ) > (2 * oldViewDistance)) {
-+            // teleported?
-+            this.removePlayer(player, oldPosition, oldViewDistance);
-+            this.addNewPlayer(player, newPosition, newViewDistance);
-+            return;
-+        }
-+
-+        // x axis is width
-+        // z axis is height
-+        // right refers to the x axis of where we moved
-+        // top refers to the z axis of where we moved
-+
-+        if (oldViewDistance == newViewDistance) {
-+            // same view distance
-+
-+            // used for relative positioning
-+            final int up = 1 | (dz >> (Integer.SIZE - 1)); // 1 if dz >= 0, -1 otherwise
-+            final int right = 1 | (dx >> (Integer.SIZE - 1)); // 1 if dx >= 0, -1 otherwise
-+
-+            // The area excluded by overlapping the two view distance squares creates four rectangles:
-+            // Two on the left, and two on the right. The ones on the left we consider the "removed" section
-+            // and on the right the "added" section.
-+            // https://i.imgur.com/MrnOBgI.png is a reference image. Note that the outside border is not actually
-+            // exclusive to the regions they surround.
-+
-+            // 4 points of the rectangle
-+            int maxX; // exclusive
-+            int minX; // inclusive
-+            int maxZ; // exclusive
-+            int minZ; // inclusive
-+
-+            if (dx != 0) {
-+                // handle right addition
-+
-+                maxX = toX + (oldViewDistance * right) + right; // exclusive
-+                minX = fromX + (oldViewDistance * right) + right; // inclusive
-+                maxZ = fromZ + (oldViewDistance * up) + up; // exclusive
-+                minZ = toZ - (oldViewDistance * up); // inclusive
-+
-+                for (int currX = minX; currX != maxX; currX += right) {
-+                    for (int currZ = minZ; currZ != maxZ; currZ += up) {
-+                        this.addPlayerTo(player, currX, currZ);
-+                    }
-+                }
-+            }
-+
-+            if (dz != 0) {
-+                // handle up addition
-+
-+                maxX = toX + (oldViewDistance * right) + right; // exclusive
-+                minX = toX - (oldViewDistance * right); // inclusive
-+                maxZ = toZ + (oldViewDistance * up) + up; // exclusive
-+                minZ = fromZ + (oldViewDistance * up) + up; // inclusive
-+
-+                for (int currX = minX; currX != maxX; currX += right) {
-+                    for (int currZ = minZ; currZ != maxZ; currZ += up) {
-+                        this.addPlayerTo(player, currX, currZ);
-+                    }
-+                }
-+            }
-+
-+            if (dx != 0) {
-+                // handle left removal
-+
-+                maxX = toX - (oldViewDistance * right); // exclusive
-+                minX = fromX - (oldViewDistance * right); // inclusive
-+                maxZ = fromZ + (oldViewDistance * up) + up; // exclusive
-+                minZ = toZ - (oldViewDistance * up); // inclusive
-+
-+                for (int currX = minX; currX != maxX; currX += right) {
-+                    for (int currZ = minZ; currZ != maxZ; currZ += up) {
-+                        this.removePlayerFrom(player, currX, currZ);
-+                    }
-+                }
-+            }
-+
-+            if (dz != 0) {
-+                // handle down removal
-+
-+                maxX = fromX + (oldViewDistance * right) + right; // exclusive
-+                minX = fromX - (oldViewDistance * right); // inclusive
-+                maxZ = toZ - (oldViewDistance * up); // exclusive
-+                minZ = fromZ - (oldViewDistance * up); // inclusive
-+
-+                for (int currX = minX; currX != maxX; currX += right) {
-+                    for (int currZ = minZ; currZ != maxZ; currZ += up) {
-+                        this.removePlayerFrom(player, currX, currZ);
-+                    }
-+                }
-+            }
-+        } else {
-+            // different view distance
-+            // for now :)
-+            this.removePlayer(player, oldPosition, oldViewDistance);
-+            this.addNewPlayer(player, newPosition, newViewDistance);
-+        }
-+    }
-+
-+    private void removePlayer(final ServerPlayer player, final SectionPos position, final int viewDistance) {
-+        final int x = position.getX();
-+        final int z = position.getZ();
-+
-+        for (int xoff = -viewDistance; xoff <= viewDistance; ++xoff) {
-+            for (int zoff = -viewDistance; zoff <= viewDistance; ++zoff) {
-+                this.removePlayerFrom(player, x + xoff, z + zoff);
-+            }
-+        }
-+    }
-+
-+    private void addNewPlayer(final ServerPlayer player, final SectionPos position, final int viewDistance) {
-+        final int x = position.getX();
-+        final int z = position.getZ();
-+
-+        for (int xoff = -viewDistance; xoff <= viewDistance; ++xoff) {
-+            for (int zoff = -viewDistance; zoff <= viewDistance; ++zoff) {
-+                this.addPlayerTo(player, x + xoff, z + zoff);
-+            }
-+        }
-+    }
-+}
 diff --git a/src/main/java/com/destroystokyo/paper/util/PooledHashSets.java b/src/main/java/com/destroystokyo/paper/util/PooledHashSets.java
 new file mode 100644
 index 0000000000000000000000000000000000000000..11de56afaf059b00fa5bec293516bcdce7c4b2b9
@@ -547,26 +269,58 @@ index 0000000000000000000000000000000000000000..11de56afaf059b00fa5bec293516bcdc
 +    }
 +} 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 0c82b270c7095c7e4666a8078ecc7142503795c4..0583d7ee24f694fbf5138dfae9f7b8c8e4225ab3 100644
+index 0c82b270c7095c7e4666a8078ecc7142503795c4..2d7f0eb7df62d1c26ccf19cf61595227e19aa562 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -151,6 +151,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
      private final Long2ByteMap chunkTypeCache;
      private final Queue<Runnable> unloadQueue;
      int viewDistance;
-+    public final com.destroystokyo.paper.util.PlayerMobDistanceMap playerMobDistanceMap; // Paper
++    public final com.destroystokyo.paper.util.misc.PlayerAreaMap playerMobDistanceMap; // Paper
  
      // CraftBukkit start - recursion-safe executor for Chunk loadCallback() and unloadCallback()
      public final CallbackExecutor callbackExecutor = new CallbackExecutor();
-@@ -263,6 +264,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -180,16 +181,31 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+         int chunkX = MCUtil.getChunkCoordinate(player.getX());
+         int chunkZ = MCUtil.getChunkCoordinate(player.getZ());
+         // Note: players need to be explicitly added to distance maps before they can be updated
++        // Paper start - per player mob spawning
++        if (this.playerMobDistanceMap != null) {
++            this.playerMobDistanceMap.add(player, chunkX, chunkZ, this.distanceManager.getSimulationDistance());
++        }
++        // Paper end - per player mob spawning
+     }
+ 
+     void removePlayerFromDistanceMaps(ServerPlayer player) {
+ 
++        // Paper start - per player mob spawning
++        if (this.playerMobDistanceMap != null) {
++            this.playerMobDistanceMap.remove(player);
++        }
++        // Paper end - per player mob spawning
+     }
+ 
+     void updateMaps(ServerPlayer player) {
+         int chunkX = MCUtil.getChunkCoordinate(player.getX());
+         int chunkZ = MCUtil.getChunkCoordinate(player.getZ());
+         // Note: players need to be explicitly added to distance maps before they can be updated
++        // Paper start - per player mob spawning
++        if (this.playerMobDistanceMap != null) {
++            this.playerMobDistanceMap.update(player, chunkX, chunkZ, this.distanceManager.getSimulationDistance());
++        }
++        // Paper end - per player mob spawning
+     }
+     // Paper end
+     // Paper start
+@@ -263,6 +279,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          this.dataRegionManager = new io.papermc.paper.chunk.SingleThreadChunkRegionManager(this.level, 2, (1.0 / 3.0), 1, 6, "Data", DataRegionData::new, DataRegionSectionData::new);
          this.regionManagers.add(this.dataRegionManager);
          // Paper end
-+        this.playerMobDistanceMap = this.level.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.PlayerMobDistanceMap() : null; // Paper
++        this.playerMobDistanceMap = this.level.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.misc.PlayerAreaMap(this.pooledLinkedPlayerHashSets) : null; // Paper
      }
  
      protected ChunkGenerator generator() {
-@@ -280,6 +282,25 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -280,6 +297,31 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          });
      }
  
@@ -575,11 +329,17 @@ index 0c82b270c7095c7e4666a8078ecc7142503795c4..0583d7ee24f694fbf5138dfae9f7b8c8
 +        if (!this.level.paperConfig.perPlayerMobSpawns) {
 +            return;
 +        }
-+        int chunkX = (int)Math.floor(entity.getX()) >> 4;
-+        int chunkZ = (int)Math.floor(entity.getZ()) >> 4;
 +        int index = entity.getType().getCategory().ordinal();
 +
-+        for (ServerPlayer player : this.playerMobDistanceMap.getPlayersInRange(chunkX, chunkZ)) {
++        final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> inRange = this.playerMobDistanceMap.getObjectsInRange(entity.chunkPosition());
++        if (inRange == null) {
++            return;
++        }
++        final Object[] backingSet = inRange.getBackingSet();
++        for (int i = 0; i < backingSet.length; i++) {
++            if (!(backingSet[i] instanceof final ServerPlayer player)) {
++                continue;
++            }
 +            ++player.mobCounts[index];
 +        }
 +    }
@@ -610,21 +370,17 @@ index f0dac1f596911eb2109192ef16a619f8ae71d1f7..07b616d9d7cde77c001f5c627daef073
          this.naturalSpawnChunkCounter.runAllUpdates();
          return this.naturalSpawnChunkCounter.chunks.size();
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 7b391d6ab84eeaed7bdd27ea70d5e3f9690a0abf..d9405456f61b954f9b6fa2fa7939fc3a36ec6fc6 100644
+index 7b391d6ab84eeaed7bdd27ea70d5e3f9690a0abf..0d380bba07c5c7b6b25fa2ce554418ef8ba9fdb1 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-@@ -916,7 +916,22 @@ public class ServerChunkCache extends ChunkSource {
+@@ -916,7 +916,18 @@ public class ServerChunkCache extends ChunkSource {
              gameprofilerfiller.push("naturalSpawnCount");
              this.level.timings.countNaturalMobs.startTiming(); // Paper - timings
              int l = this.distanceManager.getNaturalSpawnChunkCount();
 -            NaturalSpawner.SpawnState spawnercreature_d = NaturalSpawner.createState(l, this.level.getAllEntities(), this::getFullChunk, new LocalMobCapCalculator(this.chunkMap));
 +            // Paper start - per player mob spawning
 +            NaturalSpawner.SpawnState spawnercreature_d; // moved down
-+            if (this.chunkMap.playerMobDistanceMap != null) {
-+                // update distance map
-+                this.level.timings.playerMobDistanceMapUpdate.startTiming();
-+                this.chunkMap.playerMobDistanceMap.update(this.level.players, this.distanceManager.getSimulationDistance());
-+                this.level.timings.playerMobDistanceMapUpdate.stopTiming();
++            if ((this.spawnFriendlies || this.spawnEnemies) && this.chunkMap.playerMobDistanceMap != null) { // don't count mobs when animals and monsters are disabled
 +                // re-set mob counts
 +                for (ServerPlayer player : this.level.players) {
 +                    Arrays.fill(player.mobCounts, 0);
@@ -662,7 +418,7 @@ index b193f8dfbe7b61c919ad5eb452d29885982e25e4..01b9edc8aaf472650f171f1b88229807
  
      // 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 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc267758df10ed 100644
+index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..c0fb5d445ed18fbf52df2be754eab0d8fb6e9239 100644
 --- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
 +++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
 @@ -65,7 +65,13 @@ public final class NaturalSpawner {
@@ -684,7 +440,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
                      }
  
 -                    if (entity instanceof Mob) {
-+                    if (localmobcapcalculator != null && entity instanceof Mob) {
++                    if (localmobcapcalculator != null && entity instanceof Mob) { // Paper
                          localmobcapcalculator.addMob(chunk.getPos(), enumcreaturetype);
                      }
  
@@ -697,7 +453,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
                  });
              }
          }
-@@ -169,13 +180,30 @@ public final class NaturalSpawner {
+@@ -169,13 +180,37 @@ public final class NaturalSpawner {
                  continue;
              }
  
@@ -709,8 +465,15 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
 +
 +            if (world.paperConfig.perPlayerMobSpawns) {
 +                int minDiff = Integer.MAX_VALUE;
-+                for (net.minecraft.server.level.ServerPlayer entityplayer : world.getChunkSource().chunkMap.playerMobDistanceMap.getPlayersInRange(chunk.getPos())) {
-+                    minDiff = Math.min(limit - world.getChunkSource().chunkMap.getMobCountNear(entityplayer, enumcreaturetype), minDiff);
++                final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<net.minecraft.server.level.ServerPlayer> inRange = world.getChunkSource().chunkMap.playerMobDistanceMap.getObjectsInRange(chunk.getPos());
++                if (inRange != null) {
++                    final Object[] backingSet = inRange.getBackingSet();
++                    for (int k = 0; k < backingSet.length; k++) {
++                        if (!(backingSet[k] instanceof final net.minecraft.server.level.ServerPlayer player)) {
++                            continue;
++                        }
++                        minDiff = Math.min(limit - world.getChunkSource().chunkMap.getMobCountNear(player, enumcreaturetype), minDiff);
++                    }
 +                }
 +                difference = (minDiff == Integer.MAX_VALUE) ? 0 : minDiff;
 +            }
@@ -730,7 +493,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
              }
          }
  
-@@ -183,12 +211,18 @@ public final class NaturalSpawner {
+@@ -183,12 +218,18 @@ public final class NaturalSpawner {
          world.getProfiler().pop();
      }
  
@@ -750,7 +513,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
      }
  
      @VisibleForDebug
-@@ -199,15 +233,21 @@ public final class NaturalSpawner {
+@@ -199,15 +240,21 @@ public final class NaturalSpawner {
          });
      }
  
@@ -773,7 +536,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
              int k = 0;
  
              while (k < 3) {
-@@ -249,14 +289,14 @@ public final class NaturalSpawner {
+@@ -249,14 +296,14 @@ public final class NaturalSpawner {
                                      // Paper start
                                      Boolean doSpawning = isValidSpawnPostitionForType(world, group, structuremanager, chunkgenerator, biomesettingsmobs_c, blockposition_mutableblockposition, d2);
                                      if (doSpawning == null) {
@@ -790,7 +553,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
                                          }
  
                                          entityinsentient.moveTo(d0, (double) i, d1, world.random.nextFloat() * 360.0F, 0.0F);
-@@ -268,10 +308,15 @@ public final class NaturalSpawner {
+@@ -268,10 +315,15 @@ public final class NaturalSpawner {
                                                  ++j;
                                                  ++k1;
                                                  runner.run(entityinsentient, chunk);
@@ -808,7 +571,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
                                              }
  
                                              if (entityinsentient.isMaxGroupSizeReached(k1)) {
-@@ -293,6 +338,7 @@ public final class NaturalSpawner {
+@@ -293,6 +345,7 @@ public final class NaturalSpawner {
              }
  
          }
@@ -816,7 +579,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
      }
  
      private static boolean isRightDistanceToPlayerAndSpawnPoint(ServerLevel world, ChunkAccess chunk, BlockPos.MutableBlockPos pos, double squaredDistance) {
-@@ -572,7 +618,7 @@ public final class NaturalSpawner {
+@@ -572,7 +625,7 @@ public final class NaturalSpawner {
              MobCategory enumcreaturetype = entitytypes.getCategory();
  
              this.mobCategoryCounts.addTo(enumcreaturetype, 1);
@@ -825,7 +588,7 @@ index 6f63f471c2c9a3b85c6fc92bdee31a5ff9714ff5..3a9e20bdf445c019e60a814ea6fc2677
          }
  
          public int getSpawnableChunkCount() {
-@@ -588,6 +634,7 @@ public final class NaturalSpawner {
+@@ -588,6 +641,7 @@ public final class NaturalSpawner {
              int i = limit * this.spawnableChunkCount / NaturalSpawner.MAGIC_NUMBER;
              // CraftBukkit end
  

patches/server/0387-Prevent-Double-PlayerChunkMap-adds-crashing-server.patch

@@ -7,10 +7,10 @@ Suspected case would be around the technique used in .stopRiding
 Stack will identify any causer of this and warn instead of crashing.
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 0583d7ee24f694fbf5138dfae9f7b8c8e4225ab3..27c304d66ecf0bb8d7b5b4343ca207880e14711b 100644
+index 2d7f0eb7df62d1c26ccf19cf61595227e19aa562..ed4b4c3d3d991716078d5f008bf4665e76b30f33 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -1539,6 +1539,14 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1560,6 +1560,14 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
      public void addEntity(Entity entity) {
          org.spigotmc.AsyncCatcher.catchOp("entity track"); // Spigot

patches/server/0393-Improved-Watchdog-Support.patch

@@ -262,10 +262,10 @@ index 049eb5693dc98e1d0ec3bd88c73a41fdb2f59bff..0716aaf29f9d76240a0de4ca02daba44
      }
  
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 27c304d66ecf0bb8d7b5b4343ca207880e14711b..6f851c24a67d1b3a349790b0d60f45b23ff93bc6 100644
+index ed4b4c3d3d991716078d5f008bf4665e76b30f33..4cb7e63b433b8d4a02c2d193a2596e51ddab2779 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -514,6 +514,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -535,6 +535,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              MutableBoolean mutableboolean = new MutableBoolean();
  
              do {

patches/server/0403-Fix-Chunk-Post-Processing-deadlock-risk.patch

@@ -25,7 +25,7 @@ This successfully fixed a reoccurring and highly reproduceable crash
 for heightmaps.
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 6f851c24a67d1b3a349790b0d60f45b23ff93bc6..4566af37c76cb3a2fe6441451a444a5a3c9914f9 100644
+index 4cb7e63b433b8d4a02c2d193a2596e51ddab2779..9396d1164355aa3f10a8e5adad4813be808c0ffb 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -174,6 +174,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
@@ -36,7 +36,7 @@ index 6f851c24a67d1b3a349790b0d60f45b23ff93bc6..4566af37c76cb3a2fe6441451a444a5a
      // Paper start - distance maps
      private final com.destroystokyo.paper.util.misc.PooledLinkedHashSets<ServerPlayer> pooledLinkedPlayerHashSets = new com.destroystokyo.paper.util.misc.PooledLinkedHashSets<>();
  
-@@ -954,7 +955,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -975,7 +976,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
                  return Either.left(chunk);
              });
          }, (runnable) -> {
@@ -46,10 +46,10 @@ index 6f851c24a67d1b3a349790b0d60f45b23ff93bc6..4566af37c76cb3a2fe6441451a444a5a
  
          completablefuture1.thenAcceptAsync((either) -> {
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 5b6381858418ceca4fe40ef329e050538e980cdb..66dfe3d79fa3273a2bab64193f73f2b38002c18c 100644
+index 19c44eae78802c9fe0479cdc32f21156dc9b9d45..02516d4a6ee08908765f5bc84b14560754a67680 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-@@ -1144,6 +1144,7 @@ public class ServerChunkCache extends ChunkSource {
+@@ -1140,6 +1140,7 @@ public class ServerChunkCache extends ChunkSource {
                  return super.pollTask() || execChunkTask; // Paper
              }
          } finally {

patches/server/0404-Fix-Longstanding-Broken-behavior-of-PlayerJoinEvent.patch

@@ -28,10 +28,10 @@ receives a deterministic result, and should no longer require 1 tick
 delays anymore.
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 4566af37c76cb3a2fe6441451a444a5a3c9914f9..49e612fc0fc4ec991d821d0aa4b41f488dd9f832 100644
+index 9396d1164355aa3f10a8e5adad4813be808c0ffb..5f576e6b749e36a4729439930f48e2b1cdddef16 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -1548,6 +1548,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1569,6 +1569,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
                  .printStackTrace();
              return;
          }

patches/server/0429-Reduce-allocation-of-Vec3D-by-entity-tracker.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Reduce allocation of Vec3D by entity tracker
 
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 49e612fc0fc4ec991d821d0aa4b41f488dd9f832..62a8482b73796f2c6b76c0e039cb21e799bc9416 100644
+index 5f576e6b749e36a4729439930f48e2b1cdddef16..20818ae001a0a1bcf570041468bea33b88fda4ac 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -1826,9 +1826,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1847,9 +1847,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          public void updatePlayer(ServerPlayer player) {
              org.spigotmc.AsyncCatcher.catchOp("player tracker update"); // Spigot
              if (player != this.entity) {

patches/server/0432-Optimize-anyPlayerCloseEnoughForSpawning-to-use-dist.patch

@@ -37,10 +37,10 @@ index 74d674b2684b0db4aa6c183edc6091d53e9ee882..626bcbc6dd013260c3f8b38a1d14e7ba
  
      // CraftBukkit start
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 62a8482b73796f2c6b76c0e039cb21e799bc9416..87b612c25f865af4c8da72c761b70094fb89c4cb 100644
+index 7f8c82f2f50934bcc2eacd40a5fbd93d5dae68f6..745b8c16600ba106907302daa9630abdce6807b0 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -177,21 +177,37 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -177,11 +177,23 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
      final CallbackExecutor chunkLoadConversionCallbackExecutor = new CallbackExecutor(); // Paper
      // Paper start - distance maps
      private final com.destroystokyo.paper.util.misc.PooledLinkedHashSets<ServerPlayer> pooledLinkedPlayerHashSets = new com.destroystokyo.paper.util.misc.PooledLinkedHashSets<>();
@@ -61,28 +61,32 @@ index 62a8482b73796f2c6b76c0e039cb21e799bc9416..87b612c25f865af4c8da72c761b70094
          int chunkZ = MCUtil.getChunkCoordinate(player.getZ());
          // Note: players need to be explicitly added to distance maps before they can be updated
 +        this.playerChunkTickRangeMap.add(player, chunkX, chunkZ, DistanceManager.MOB_SPAWN_RANGE); // Paper - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
-     }
+         // Paper start - per player mob spawning
+         if (this.playerMobDistanceMap != null) {
+             this.playerMobDistanceMap.add(player, chunkX, chunkZ, this.distanceManager.getSimulationDistance());
+@@ -191,6 +203,10 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
      void removePlayerFromDistanceMaps(ServerPlayer player) {
--
+ 
 +        // Paper start - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
 +        this.playerMobSpawnMap.remove(player);
 +        this.playerChunkTickRangeMap.remove(player);
 +        // Paper end - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
-     }
- 
-     void updateMaps(ServerPlayer player) {
+         // Paper start - per player mob spawning
+         if (this.playerMobDistanceMap != null) {
+             this.playerMobDistanceMap.remove(player);
+@@ -202,6 +218,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          int chunkX = MCUtil.getChunkCoordinate(player.getX());
          int chunkZ = MCUtil.getChunkCoordinate(player.getZ());
          // Note: players need to be explicitly added to distance maps before they can be updated
 +        this.playerChunkTickRangeMap.update(player, chunkX, chunkZ, DistanceManager.MOB_SPAWN_RANGE); // Paper - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
-     }
-     // Paper end
-     // Paper start
-@@ -266,6 +282,38 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+         // Paper start - per player mob spawning
+         if (this.playerMobDistanceMap != null) {
+             this.playerMobDistanceMap.update(player, chunkX, chunkZ, this.distanceManager.getSimulationDistance());
+@@ -281,6 +298,38 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          this.regionManagers.add(this.dataRegionManager);
          // Paper end
-         this.playerMobDistanceMap = this.level.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.PlayerMobDistanceMap() : null; // Paper
+         this.playerMobDistanceMap = this.level.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.misc.PlayerAreaMap(this.pooledLinkedPlayerHashSets) : null; // Paper
 +        // Paper start - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
 +        this.playerChunkTickRangeMap = new com.destroystokyo.paper.util.misc.PlayerAreaMap(this.pooledLinkedPlayerHashSets,
 +            (ServerPlayer player, int rangeX, int rangeZ, int currPosX, int currPosZ, int prevPosX, int prevPosZ,
@@ -118,7 +122,7 @@ index 62a8482b73796f2c6b76c0e039cb21e799bc9416..87b612c25f865af4c8da72c761b70094
      }
  
      protected ChunkGenerator generator() {
-@@ -466,6 +514,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -487,6 +536,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          } else {
              if (holder != null) {
                  holder.setTicketLevel(level);
@@ -126,7 +130,7 @@ index 62a8482b73796f2c6b76c0e039cb21e799bc9416..87b612c25f865af4c8da72c761b70094
              }
  
              if (holder != null) {
-@@ -1310,43 +1359,48 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1331,43 +1381,48 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          return this.anyPlayerCloseEnoughForSpawning(pos, false);
      }
  
@@ -269,7 +273,7 @@ index f11e9421d393ef5a04f24c78a1214359710cc2f8..3865146697051e01a778414064425ea0
  
      public String getDebugStatus() {
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 50f3be85039c698bb2f73116a397d6ddaeea6dbd..b10ed9f87e58983863864161457cd415bb782bfd 100644
+index 02516d4a6ee08908765f5bc84b14560754a67680..b327bd2f48166a4a0c831b0209695fe5935f6a68 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 @@ -881,6 +881,37 @@ public class ServerChunkCache extends ChunkSource {
@@ -310,7 +314,7 @@ index 50f3be85039c698bb2f73116a397d6ddaeea6dbd..b10ed9f87e58983863864161457cd415
              LevelData worlddata = this.level.getLevelData();
              ProfilerFiller gameprofilerfiller = this.level.getProfiler();
  
-@@ -928,15 +959,7 @@ public class ServerChunkCache extends ChunkSource {
+@@ -924,15 +955,7 @@ public class ServerChunkCache extends ChunkSource {
              boolean flag2 = this.level.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && !this.level.players().isEmpty(); // CraftBukkit
  
              Collections.shuffle(list);
@@ -327,7 +331,7 @@ index 50f3be85039c698bb2f73116a397d6ddaeea6dbd..b10ed9f87e58983863864161457cd415
              Iterator iterator1 = list.iterator();
  
              while (iterator1.hasNext()) {
-@@ -944,9 +967,9 @@ public class ServerChunkCache extends ChunkSource {
+@@ -940,9 +963,9 @@ public class ServerChunkCache extends ChunkSource {
                  LevelChunk chunk1 = chunkproviderserver_a.chunk;
                  ChunkPos chunkcoordintpair = chunk1.getPos();
  

patches/server/0433-Use-distance-map-to-optimise-entity-tracker.patch

@@ -6,7 +6,7 @@ Subject: [PATCH] Use distance map to optimise entity tracker
 Use the distance map to find candidate players for tracking.
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc845bbacb1 100644
+index 4796e60ade3b576dbe0fe79bc9f0be6085dc7cc8..d358bca3aa0407ede113b4ca6243043f75202267 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -67,6 +67,7 @@ import net.minecraft.network.protocol.game.ClientboundSetEntityLinkPacket;
@@ -17,7 +17,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
  import net.minecraft.server.level.progress.ChunkProgressListener;
  import net.minecraft.server.network.ServerPlayerConnection;
  import net.minecraft.util.CsvOutput;
-@@ -188,15 +189,45 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -188,10 +189,35 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
      public final com.destroystokyo.paper.util.misc.PlayerAreaMap playerMobSpawnMap; // this map is absent from updateMaps since it's controlled at the start of the chunkproviderserver tick
      public final com.destroystokyo.paper.util.misc.PlayerAreaMap playerChunkTickRangeMap;
      // Paper end - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
@@ -52,9 +52,11 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
 +        // Paper end - use distance map to optimise entity tracker
          // Note: players need to be explicitly added to distance maps before they can be updated
          this.playerChunkTickRangeMap.add(player, chunkX, chunkZ, DistanceManager.MOB_SPAWN_RANGE); // Paper - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
-     }
+         // Paper start - per player mob spawning
+@@ -203,6 +229,11 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
      void removePlayerFromDistanceMaps(ServerPlayer player) {
+ 
 +        // Paper start - use distance map to optimise tracker
 +        for (int i = 0, len = TRACKING_RANGE_TYPES.length; i < len; ++i) {
 +            this.playerEntityTrackerTrackMaps[i].remove(player);
@@ -63,7 +65,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
          // Paper start - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
          this.playerMobSpawnMap.remove(player);
          this.playerChunkTickRangeMap.remove(player);
-@@ -207,6 +238,14 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -218,6 +249,14 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          int chunkX = MCUtil.getChunkCoordinate(player.getX());
          int chunkZ = MCUtil.getChunkCoordinate(player.getZ());
          // Note: players need to be explicitly added to distance maps before they can be updated
@@ -76,12 +78,12 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
 +        }
 +        // Paper end - use distance map to optimise entity tracker
          this.playerChunkTickRangeMap.update(player, chunkX, chunkZ, DistanceManager.MOB_SPAWN_RANGE); // Paper - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
-     }
-     // Paper end
-@@ -282,6 +321,45 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+         // Paper start - per player mob spawning
+         if (this.playerMobDistanceMap != null) {
+@@ -298,6 +337,45 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          this.regionManagers.add(this.dataRegionManager);
          // Paper end
-         this.playerMobDistanceMap = this.level.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.PlayerMobDistanceMap() : null; // Paper
+         this.playerMobDistanceMap = this.level.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.misc.PlayerAreaMap(this.pooledLinkedPlayerHashSets) : null; // Paper
 +        // Paper start - use distance map to optimise entity tracker
 +        this.playerEntityTrackerTrackMaps = new com.destroystokyo.paper.util.misc.PlayerAreaMap[TRACKING_RANGE_TYPES.length];
 +        this.entityTrackerTrackRanges = new int[TRACKING_RANGE_TYPES.length];
@@ -124,7 +126,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
          // Paper start - optimise ChunkMap#anyPlayerCloseEnoughForSpawning
          this.playerChunkTickRangeMap = new com.destroystokyo.paper.util.misc.PlayerAreaMap(this.pooledLinkedPlayerHashSets,
              (ServerPlayer player, int rangeX, int rangeZ, int currPosX, int currPosZ, int prevPosX, int prevPosZ,
-@@ -1482,17 +1560,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1504,17 +1582,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
      }
  
      public void move(ServerPlayer player) {
@@ -143,7 +145,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
  
          int i = SectionPos.blockToSectionCoord(player.getBlockX());
          int j = SectionPos.blockToSectionCoord(player.getBlockZ());
-@@ -1619,7 +1687,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1641,7 +1709,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
                      entity.tracker = playerchunkmap_entitytracker; // Paper - Fast access to tracker
                      this.entityMap.put(entity.getId(), playerchunkmap_entitytracker);
@@ -152,7 +154,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
                      if (entity instanceof ServerPlayer) {
                          ServerPlayer entityplayer = (ServerPlayer) entity;
  
-@@ -1663,7 +1731,37 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1685,7 +1753,37 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          entity.tracker = null; // Paper - We're no longer tracked
      }
  
@@ -190,7 +192,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
          List<ServerPlayer> list = Lists.newArrayList();
          List<ServerPlayer> list1 = this.level.players();
          ObjectIterator objectiterator = this.entityMap.values().iterator();
-@@ -1739,23 +1837,31 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1761,23 +1859,31 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          DebugPackets.sendPoiPacketsForChunk(this.level, chunk.getPos());
          List<Entity> list = Lists.newArrayList();
          List<Entity> list1 = Lists.newArrayList();
@@ -234,7 +236,7 @@ index 87b612c25f865af4c8da72c761b70094fb89c4cb..2534cae6f1b369843808aac91931bdc8
  
          Iterator iterator;
          Entity entity1;
-@@ -1831,6 +1937,42 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1853,6 +1959,42 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              this.lastSectionPos = SectionPos.of(entity);
          }
  

patches/server/0456-incremental-chunk-and-player-saving.patch

@@ -165,7 +165,7 @@ index 626bcbc6dd013260c3f8b38a1d14e7ba35dc1e01..9e96b0465717bfa761289c255fd8d2f1
          for (int i = 0; i < this.futures.length(); ++i) {
              CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> completablefuture = (CompletableFuture) this.futures.get(i);
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc263b790bc 100644
+index d358bca3aa0407ede113b4ca6243043f75202267..326a3b312d3446b813e325867f852e0cf6786945 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -101,6 +101,7 @@ import net.minecraft.world.level.levelgen.structure.templatesystem.StructureMana
@@ -176,7 +176,7 @@ index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc2
  import org.apache.commons.lang3.mutable.MutableBoolean;
  import org.apache.commons.lang3.mutable.MutableObject;
  import org.apache.logging.log4j.LogManager;
-@@ -636,6 +637,64 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -658,6 +659,64 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
      }
  
@@ -241,7 +241,7 @@ index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc2
      protected void saveAllChunks(boolean flush) {
          if (flush) {
              List<ChunkHolder> list = (List) this.visibleChunkMap.values().stream().filter(ChunkHolder::wasAccessibleSinceLastSave).peek(ChunkHolder::refreshAccessibility).collect(Collectors.toList());
-@@ -729,13 +788,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -751,13 +810,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          }
  
          int l = 0;
@@ -256,7 +256,7 @@ index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc2
  
      }
  
-@@ -773,6 +826,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -795,6 +848,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
                          this.level.unload(chunk);
                      }
@@ -264,7 +264,7 @@ index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc2
  
                      this.lightEngine.updateChunkStatus(ichunkaccess.getPos());
                      this.lightEngine.tryScheduleUpdate();
-@@ -1170,6 +1224,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1192,6 +1246,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              asyncSaveData, chunk);
  
          chunk.setUnsaved(false);
@@ -272,7 +272,7 @@ index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc2
      }
      // Paper end
  
-@@ -1179,6 +1234,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1201,6 +1256,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          if (!chunk.isUnsaved()) {
              return false;
          } else {
@@ -281,7 +281,7 @@ index 2534cae6f1b369843808aac91931bdc845bbacb1..74187951dc906e72904788ff0b42adc2
              ChunkPos chunkcoordintpair = chunk.getPos();
  
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 1115df1f148bcb079edb9eb397de3fab725bf83b..3ebe6d4a87eac760d65ea335d683742a06c6c580 100644
+index b327bd2f48166a4a0c831b0209695fe5935f6a68..73b1018b0aca377ed0ff188e74040cef57036b0b 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 @@ -825,6 +825,15 @@ public class ServerChunkCache extends ChunkSource {

patches/server/0470-Implement-Chunk-Priority-Urgency-System-for-Chunks.patch

@@ -360,7 +360,7 @@ index 9e96b0465717bfa761289c255fd8d2f1df1be3d8..87271552aa85626f22f7f8569c8fb48f
          return this.isEntityTickingReady;
      }
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892cb8adc4b8 100644
+index 326a3b312d3446b813e325867f852e0cf6786945..3e6cc16ff6f6c7993b15bd807257c0554afb6c77 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -128,6 +128,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
@@ -371,7 +371,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
      public ChunkGenerator generator;
      public final Supplier<DimensionDataStorage> overworldDataStorage;
      private final PoiManager poiManager;
-@@ -299,6 +300,15 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -315,6 +316,15 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          this.level = world;
          this.generator = chunkGenerator;
          this.mainThreadExecutor = mainThreadExecutor;
@@ -387,7 +387,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
          ProcessorMailbox<Runnable> threadedmailbox = ProcessorMailbox.create(executor, "worldgen");
  
          Objects.requireNonNull(mainThreadExecutor);
-@@ -410,6 +420,37 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -426,6 +436,37 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          });
      }
  
@@ -425,7 +425,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
      // Paper start
      public void updatePlayerMobTypeMap(Entity entity) {
          if (!this.level.paperConfig.perPlayerMobSpawns) {
-@@ -514,6 +555,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -536,6 +577,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          List<ChunkHolder> list1 = new ArrayList();
          int j = centerChunk.x;
          int k = centerChunk.z;
@@ -433,7 +433,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
  
          for (int l = -margin; l <= margin; ++l) {
              for (int i1 = -margin; i1 <= margin; ++i1) {
-@@ -532,6 +574,14 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -554,6 +596,14 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
                  ChunkStatus chunkstatus = (ChunkStatus) distanceToStatus.apply(j1);
                  CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> completablefuture = playerchunk.getOrScheduleFuture(chunkstatus, this);
@@ -448,7 +448,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
  
                  list1.add(playerchunk);
                  list.add(completablefuture);
-@@ -866,11 +916,19 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -888,11 +938,19 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          if (requiredStatus == ChunkStatus.EMPTY) {
              return this.scheduleChunkLoad(chunkcoordintpair);
          } else {
@@ -469,7 +469,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
  
              if (optional.isPresent() && ((ChunkAccess) optional.get()).getStatus().isOrAfter(requiredStatus)) {
                  CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> completablefuture = requiredStatus.load(this.level, this.structureManager, this.lightEngine, (ichunkaccess) -> {
-@@ -882,6 +940,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -904,6 +962,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              } else {
                  return this.scheduleChunkGeneration(holder, requiredStatus);
              }
@@ -477,7 +477,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
          }
      }
  
-@@ -938,14 +997,24 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -960,14 +1019,24 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          };
  
          CompletableFuture<CompoundTag> chunkSaveFuture = this.level.asyncChunkTaskManager.getChunkSaveFuture(pos.x, pos.z);
@@ -507,7 +507,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
          return ret;
          // Paper end
      }
-@@ -997,7 +1066,10 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1019,7 +1088,10 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
                  this.releaseLightTicket(chunkcoordintpair);
                  return CompletableFuture.completedFuture(Either.right(playerchunk_failure));
              });
@@ -519,7 +519,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
      }
  
      protected void releaseLightTicket(ChunkPos pos) {
-@@ -1081,7 +1153,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1103,7 +1175,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              long i = chunkHolder.getPos().toLong();
  
              Objects.requireNonNull(chunkHolder);
@@ -529,7 +529,7 @@ index 74187951dc906e72904788ff0b42adc263b790bc..0d01fc498d09c5e11d8d173ca98d892c
      }
  
 diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java
-index 84dc1e94b4f7b8315d8422634dd49b1f85044d18..451d5e9b5906e662a0c2e04b407068ea49d1089e 100644
+index cd81e7844c985d7d0f0930faa96478af6a7f6cd4..1744f4983b24a87f3861ebd5d68120cfce904934 100644
 --- a/src/main/java/net/minecraft/server/level/DistanceManager.java
 +++ b/src/main/java/net/minecraft/server/level/DistanceManager.java
 @@ -113,6 +113,7 @@ public abstract class DistanceManager {
@@ -711,7 +711,7 @@ index 84dc1e94b4f7b8315d8422634dd49b1f85044d18..451d5e9b5906e662a0c2e04b407068ea
          Ticket<ChunkPos> ticket = new Ticket<>(TicketType.FORCED, 31, pos);
          long i = pos.toLong();
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 3ebe6d4a87eac760d65ea335d683742a06c6c580..42cecd0f072505c80b65ccf26e5d838750d21e28 100644
+index 73b1018b0aca377ed0ff188e74040cef57036b0b..3b0e254f569576a6193750811c06f1c102a2aeac 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 @@ -601,6 +601,26 @@ public class ServerChunkCache extends ChunkSource {

patches/server/0490-Improve-Chunk-Status-Transition-Speed.patch

@@ -54,10 +54,10 @@ index 87271552aa85626f22f7f8569c8fb48fe4b30bf3..80aae4303e011dad13ce818136f0383e
      public ChunkHolder(ChunkPos pos, int level, LevelHeightAccessor world, LevelLightEngine lightingProvider, ChunkHolder.LevelChangeListener levelUpdateListener, ChunkHolder.PlayerProvider playersWatchingChunkProvider) {
          this.futures = new AtomicReferenceArray(ChunkHolder.CHUNK_STATUSES.size());
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 0d01fc498d09c5e11d8d173ca98d892cb8adc4b8..b44f1dc663dc3c081ec85941a2cd73e522e3c348 100644
+index 3e6cc16ff6f6c7993b15bd807257c0554afb6c77..a737fb56fef791f53ed3b0252e5a0369c22bcc7d 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -633,7 +633,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -655,7 +655,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              return either.mapLeft((list) -> {
                  return (LevelChunk) list.get(list.size() / 2);
              });
@@ -66,7 +66,7 @@ index 0d01fc498d09c5e11d8d173ca98d892cb8adc4b8..b44f1dc663dc3c081ec85941a2cd73e5
      }
  
      @Nullable
-@@ -1037,6 +1037,12 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1059,6 +1059,12 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
              return "chunkGenerate " + requiredStatus.getName();
          });
          Executor executor = (runnable) -> {

patches/server/0590-Skip-distance-map-update-when-spawning-disabled.patch

@@ -1,19 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Beech Horn <beechhorn@gmail.com>
-Date: Fri, 14 Feb 2020 19:39:59 +0000
-Subject: [PATCH] Skip distance map update when spawning disabled.
-
-
-diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 1ff2d926ca5de9334b1e5aa5defb73d7fbc1c3af..8e87cc36b57bc5e8f8eb5583e02bbede4eb9ce54 100644
---- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-@@ -966,7 +966,7 @@ public class ServerChunkCache extends ChunkSource {
-             int l = this.distanceManager.getNaturalSpawnChunkCount();
-             // Paper start - per player mob spawning
-             NaturalSpawner.SpawnState spawnercreature_d; // moved down
--            if (this.chunkMap.playerMobDistanceMap != null) {
-+            if ((this.spawnFriendlies || this.spawnEnemies) && this.chunkMap.playerMobDistanceMap != null) { // don't update when animals and monsters are disabled
-                 // update distance map
-                 this.level.timings.playerMobDistanceMapUpdate.startTiming();
-                 this.chunkMap.playerMobDistanceMap.update(this.level.players, this.distanceManager.getSimulationDistance());