Update upstream

* Linear flusher

* Use a queue & a single thread

* Customizable flusher thread number

* Use try statements

.github/workflows/build.yml

@@ -1,8 +1,8 @@
 name: Generate Jars
 on: [ push, pull_request ]
 env:
-  version: '1.19.4'
+  version: '1.20.1'
-  branch: ver/1.19.4
+  branch: ver/1.20.1
 jobs:
   paperclip:
     runs-on: ubuntu-latest
@@ -14,9 +14,8 @@ jobs:
         with:
           java-version: '17'
           cache: 'gradle'
-          distribution: 'GraalVM'
+          distribution: 'graalvm'
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          version: 'latest'
       - name: Configure Git User Details
         run: |
             git config --global user.email "actions@github.com" && git config --global user.name "Github Actions"

.github/workflows/release.yml

@@ -1,8 +1,8 @@
 name: Release Jars
 on: [push, workflow_dispatch]
 env:
-  version: '1.19.4'
+  version: '1.20.1'
-  branch: ver/1.19.4
+  branch: ver/1.20.1
 jobs:
   paperclip:
     runs-on: ubuntu-latest
@@ -14,9 +14,8 @@ jobs:
         with:
           java-version: '17'
           cache: 'gradle'
-          distribution: 'GraalVM'
+          distribution: 'graalvm'
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          version: 'latest'
       - name: Configure Git User Details
         run: |
             git config --global user.email "actions@github.com" && git config --global user.name "Github Actions"

.github/workflows/upstream.yml

@@ -10,9 +10,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Git Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set up JDK
-        uses: actions/setup-java@v2.5.0
+        uses: actions/setup-java@v3
         with:
           java-version: '17'
           cache: 'gradle'
@@ -28,7 +28,7 @@ jobs:
       - name: Rebuild Patches
         run: ./gradlew rebuildPatches --stacktrace
       - name: Upload Paperclip jar
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: kaiiju.jar
           path: build/libs/kaiiju-paperclip-*-reobf.jar

README.md

@@ -1,4 +1,3 @@
-
 <div align="center">
   <img src="https://github.com/kugge/Kaiiju/blob/ver/1.19.3/logo.png?" width="32%" height="32%"/>
   <h1>Kaiiju</h1>
@@ -12,13 +11,72 @@
 
 ## Features
 
-### Additions
+### Notable
-- **Xymb Linear Format**: Saves about 50% of disk space in OW and Nether and 95% in The End.
+- **Xymb Linear Format**: A Region file format that reduces disk space usage by about 50%.
-- **Auto update**: Update upstream everyday.
+- **Async Pathfinding**: Petal async pathfinding fixed & reworked.
+- **Technical Minecraft**: Enable Vanilla exploits such as sand duping, RNG manipulation...
+
+### Other
+- **Small optimizations**: Increase server efficiency by disabling unnecessary features.
+- **Commands**: Restore few commands that were previously removed by Folia.
+
+### Configuration
+
+```yaml
+region-format:
+  linear:
+    flush-frequency: 10
+    flush-max-threads: 1
+network:
+  send-null-entity-packets: true
+  alternate-keepalive: false
+  kick-player-on-bad-packet: true
+optimization:
+  disable-vanish-api: false
+  disable-player-stats: false
+  disable-arm-swing-event: false
+  async-path-processing:
+    enable: false
+    max-threads: 0
+    keepalive: 60
+gameplay:
+  server-mod-name: Kaiiju
+  shared-random-for-players: true
+unsupported:
+  disable-ensure-tick-thread-checks: false
+  global-event-synchronization: false
+world-settings:
+  default:
+    region-format:
+      format: ANVIL
+      linear:
+        compression-level: 1
+        crash-on-broken-symlink: true
+    optimization:
+      shulker-box-drop-contents-when-destroyed: true
+      optimize-hoppers: true
+      tick-when-empty: true
+      enable-entity-throttling: false
+      disable-achievements: false
+      disable-creatures-spawn-events: false
+      disable-dolphin-swim-to-treasure: false
+    gameplay:
+      fix-void-trading: true
+      break-redstone-on-top-of-trap-doors-early: true
+      fix-tripwire-state-inconsistency: true
+      safe-teleportation: true
+      sand-duplication: false
+      teleport-async-on-high-velocity: false
+```
+Documentation: [Kaiiju Wiki](https://github.com/KaiijuMC/Kaiiju/wiki/Configuration)
 
 ### Roadmap
-- **Static view distance**: Reduce RAM usage with a "cached" view distance.
+- **Stash deduplication**: Make giant dupe stashes possible and lagless.
-- **Native world conversion**: Convert region file format at startup
+- **Multithreaded Tracker**: Rework Petal multithreaded tracker.
+
+## Open to contributions
+- **Native world conversion**: Convert region file format at startup.
+- **Performance patch**: Any significative performance patch.
 
 ## Building
 
@@ -29,5 +87,3 @@
 
 ## License
 Original patches are licensed under GPL-3.0.
-
-Made with <span style="color: #e25555;">&#9829;</span> on Earth.

build.gradle.kts

@@ -4,7 +4,7 @@ import io.papermc.paperweight.util.constants.*
 plugins {
     java
     id("com.github.johnrengelman.shadow") version "8.1.1"
-    id("io.papermc.paperweight.patcher") version "1.5.4"
+    id("io.papermc.paperweight.patcher") version "1.5.7"
 }
 
 allprojects {
@@ -85,7 +85,7 @@ tasks.register("foliaRefLatest") {
         )
 
         val foliaLatestCommitJson = layout.cache.resolve("foliaLatestCommit.json");
-        download.get().download("https://api.github.com/repos/PaperMC/Folia/commits/master", foliaLatestCommitJson);
+        download.get().download("https://api.github.com/repos/PaperMC/Folia/commits/dev/1.20.2", foliaLatestCommitJson);
         val foliaLatestCommit = gson.fromJson<paper.libs.com.google.gson.JsonObject>(foliaLatestCommitJson)["sha"].asString;
 
         copy {

gradle.properties

@@ -1,8 +1,8 @@
 group = dev.kaiijumc.kaiiju
-version = 1.19.4-R0.1-SNAPSHOT
+version = 1.20.2-R0.1-SNAPSHOT
-mcVersion = 1.19.4
+mcVersion = 1.20.2
 
-foliaRef = 25e0cbdae46912d227a31703869594538b731931
+foliaRef = 84aecdc64afc48e73fffe01f6055c453567f2027
 
 org.gradle.caching=true
 org.gradle.parallel=true

patches/api/0001-Kaiiju-Configuration.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Kaiiju Configuration
 
 
 diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
-index c230a10aff36f6b484d7e3963cbf8073f8676fb1..6b17fc3c788b745aa458eee82cace12e4728b6b5 100644
+index b6a8217b97842cd07af24fadb21e0e44226e5bb9..ce7dcbc0709839457df357484620f21c3d7c19c5 100644
 --- a/src/main/java/org/bukkit/Server.java
 +++ b/src/main/java/org/bukkit/Server.java
-@@ -1971,6 +1971,13 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
+@@ -2121,6 +2121,13 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
          }
          // Paper end
  

patches/removed/0007-Alternate-Keepalive.patch

@@ -1,14 +1,16 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Fri, 31 Mar 2023 01:52:44 +0300
-Subject: [PATCH] Purpur Network AlternateKeepalive
+Subject: [PATCH] Alternate Keepalive
 
+Don't kick players because 1 keepalive is lost.
+This patch is from Purpur.
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index ab08e11f13921163b8ff1ff51ff9e9b86d2b47c7..b42a3466f145a92608c8746fd4beb529b4a60b01 100644
+index 47e23a196ae5e44600a64184b69141c00235baca..95b53b50606ea0ad47f407bebbb9e2bd445c0e66 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -200,8 +200,10 @@ public class KaiijuConfig {
+@@ -205,8 +205,10 @@ public class KaiijuConfig {
      }
      
      public static boolean sendNullEntityPackets = true;
@@ -20,10 +22,10 @@ index ab08e11f13921163b8ff1ff51ff9e9b86d2b47c7..b42a3466f145a92608c8746fd4beb529
      }
  }
 diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-index 4963e87adf11c9df90f0dd4b60d360a137c07bc9..5f73e794a248a4d11b58b169831622ca1f61aac6 100644
+index 678bba9d636a0eb34270a2d26b5b3d0d6d900115..564b2e668d50f05863080288d20bd54077588db9 100644
 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
 +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-@@ -261,6 +261,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -265,6 +265,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
      private long keepAliveTime = Util.getMillis();
      private boolean keepAlivePending;
      private long keepAliveChallenge;
@@ -31,7 +33,7 @@ index 4963e87adf11c9df90f0dd4b60d360a137c07bc9..5f73e794a248a4d11b58b169831622ca
      // CraftBukkit start - multithreaded fields
      private final AtomicInteger chatSpamTickCount = new AtomicInteger();
      private final java.util.concurrent.atomic.AtomicInteger tabSpamLimiter = new java.util.concurrent.atomic.AtomicInteger(); // Paper - configurable tab spam limits
-@@ -352,6 +353,20 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -357,6 +358,20 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
          long currentTime = Util.getMillis();
          long elapsedTime = currentTime - this.keepAliveTime;
  
@@ -52,7 +54,7 @@ index 4963e87adf11c9df90f0dd4b60d360a137c07bc9..5f73e794a248a4d11b58b169831622ca
          if (this.keepAlivePending) {
              if (!this.processedDisconnect && elapsedTime >= KEEPALIVE_LIMIT) { // check keepalive limit, don't fire if already disconnected
                  ServerGamePacketListenerImpl.LOGGER.warn("{} was kicked due to keepalive timeout!", this.player.getScoreboardName()); // more info
-@@ -3534,6 +3549,16 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -3610,6 +3625,16 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
  
      @Override
      public void handleKeepAlive(ServerboundKeepAlivePacket packet) {
@@ -66,6 +68,6 @@ index 4963e87adf11c9df90f0dd4b60d360a137c07bc9..5f73e794a248a4d11b58b169831622ca
 +            }
 +        } else
 +        // Kaiiju end
-         //PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel()); // CraftBukkit // Paper - This shouldn't be on the main thread
+         //PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); // CraftBukkit // Paper - This shouldn't be on the main thread
          if (this.keepAlivePending && packet.getId() == this.keepAliveChallenge) {
              int i = (int) (Util.getMillis() - this.keepAliveTime);

patches/removed/0016-Fix-off-thread-raid-winners.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Tue, 9 May 2023 15:11:56 +0300
+Subject: [PATCH] Fix off thread raid winners
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/raid/Raid.java b/src/main/java/net/minecraft/world/entity/raid/Raid.java
+index 359f1690497eac00899eb26c17308e0a6fe943ad..3cc320e854cbb9e70b6c63f1f950091c5195edae 100644
+--- a/src/main/java/net/minecraft/world/entity/raid/Raid.java
++++ b/src/main/java/net/minecraft/world/entity/raid/Raid.java
+@@ -404,6 +404,7 @@ public class Raid {
+                             UUID uuid = (UUID) iterator.next();
+                             Entity entity = this.level.getEntity(uuid);
+ 
++                            if (!io.papermc.paper.util.TickThread.isTickThreadFor(entity)) continue; // Kaiiju - Prevent give effect to player off thread
+                             if (entity instanceof LivingEntity && !entity.isSpectator()) {
+                                 LivingEntity entityliving = (LivingEntity) entity;
+ 

patches/removed/0017-Strip-raytracing-for-EntityLiving-hasLineOfSight.patch

@@ -0,0 +1,139 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Wed, 10 May 2023 16:30:38 +0300
+Subject: [PATCH] Strip raytracing for EntityLiving#hasLineOfSight
+
+This has been benchmarked on a huge gold farm.
+Resulting in significative performance improvements.
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index f636bdf1075fa784ce7ee25478d4d94bacb05677..2da522f89a7c44208ca1ba9139efe723a519fabc 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -3661,7 +3661,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+             Vec3 vec3d1 = new Vec3(entity.getX(), entity.getEyeY(), entity.getZ());
+ 
+             // Paper - diff on change - used in CraftLivingEntity#hasLineOfSight(Location) and CraftWorld#lineOfSightExists
+-            return vec3d1.distanceToSqr(vec3d) > 128D * 128D ? false : this.level().clip(new ClipContext(vec3d, vec3d1, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, this)).getType() == HitResult.Type.MISS;
++            return !(vec3d1.distanceToSqr(vec3d) > 128D * 128D) && this.level().rayTraceDirect(vec3d, vec3d1, net.minecraft.world.phys.shapes.CollisionContext.of(this)) == net.minecraft.world.phys.BlockHitResult.Type.MISS; // Paper - use distanceToSqr // Kaiiju - Pufferfish - Strip raytracing
+         }
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/BlockGetter.java b/src/main/java/net/minecraft/world/level/BlockGetter.java
+index 0e8746759752b692668886370181aa5db1fd0bb0..5e2f5e9c21009a71f671955df7a4135ce5cf5b08 100644
+--- a/src/main/java/net/minecraft/world/level/BlockGetter.java
++++ b/src/main/java/net/minecraft/world/level/BlockGetter.java
+@@ -68,6 +68,17 @@ public interface BlockGetter extends LevelHeightAccessor {
+         });
+     }
+ 
++    // Kaiiju start - Pufferfish - broken down variant of below rayTraceBlock, used by World#rayTraceDirect
++    @Nullable
++    default net.minecraft.world.phys.BlockHitResult.Type rayTraceBlockDirect(Vec3 vec3d, Vec3 vec3d1, BlockPos blockposition, BlockState iblockdata, net.minecraft.world.phys.shapes.CollisionContext voxelshapecoll) {
++        if (iblockdata.isAir()) return null;
++        VoxelShape voxelshape = ClipContext.Block.COLLIDER.get(iblockdata, this, blockposition, voxelshapecoll);
++        net.minecraft.world.phys.BlockHitResult movingobjectpositionblock = this.clipWithInteractionOverride(vec3d, vec3d1, blockposition, voxelshape, iblockdata);
++
++        return movingobjectpositionblock == null ? null : movingobjectpositionblock.getType();
++    }
++    // Kaiiju end
++
+     // CraftBukkit start - moved block handling into separate method for use by Block#rayTrace
+     default BlockHitResult clip(ClipContext raytrace1, BlockPos blockposition) {
+             // Paper start - Prevent raytrace from loading chunks
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index fb71843793e699b2ccfaa3b7e4c2bb7d4826a706..42727a50ae11cd4d4aa65eb57638bfb164f1e4ac 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -432,6 +432,91 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+         return null;
+     }
+ 
++    // Kaiiju start - Pufferfish - broken down method of raytracing for EntityLiving#hasLineOfSight, replaces IBlockAccess#rayTrace(RayTrace)
++    public net.minecraft.world.phys.BlockHitResult.Type rayTraceDirect(net.minecraft.world.phys.Vec3 vec3d, net.minecraft.world.phys.Vec3 vec3d1, net.minecraft.world.phys.shapes.CollisionContext voxelshapecoll) {
++        // most of this code comes from IBlockAccess#a(RayTrace, BiFunction, Function), but removes the needless functions
++        if (vec3d.equals(vec3d1)) {
++            return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++        }
++
++        double endX = Mth.lerp(-1.0E-7D, vec3d1.x, vec3d.x);
++        double endY = Mth.lerp(-1.0E-7D, vec3d1.y, vec3d.y);
++        double endZ = Mth.lerp(-1.0E-7D, vec3d1.z, vec3d.z);
++
++        double startX = Mth.lerp(-1.0E-7D, vec3d.x, vec3d1.x);
++        double startY = Mth.lerp(-1.0E-7D, vec3d.y, vec3d1.y);
++        double startZ = Mth.lerp(-1.0E-7D, vec3d.z, vec3d1.z);
++
++        int currentX = Mth.floor(startX);
++        int currentY = Mth.floor(startY);
++        int currentZ = Mth.floor(startZ);
++
++        BlockPos.MutableBlockPos currentBlock = new BlockPos.MutableBlockPos(currentX, currentY, currentZ);
++
++        LevelChunk chunk = this.getChunkIfLoaded(currentBlock);
++        if (chunk == null) {
++            return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++        }
++
++        net.minecraft.world.phys.BlockHitResult.Type initialCheck = this.rayTraceBlockDirect(vec3d, vec3d1, currentBlock, chunk.getBlockState(currentBlock), voxelshapecoll);
++
++        if (initialCheck != null) {
++            return initialCheck;
++        }
++
++        double diffX = endX - startX;
++        double diffY = endY - startY;
++        double diffZ = endZ - startZ;
++
++        int xDirection = Mth.sign(diffX);
++        int yDirection = Mth.sign(diffY);
++        int zDirection = Mth.sign(diffZ);
++
++        double normalizedX = xDirection == 0 ? Double.MAX_VALUE : (double) xDirection / diffX;
++        double normalizedY = yDirection == 0 ? Double.MAX_VALUE : (double) yDirection / diffY;
++        double normalizedZ = zDirection == 0 ? Double.MAX_VALUE : (double) zDirection / diffZ;
++
++        double normalizedXDirection = normalizedX * (xDirection > 0 ? 1.0D - Mth.frac(startX) : Mth.frac(startX));
++        double normalizedYDirection = normalizedY * (yDirection > 0 ? 1.0D - Mth.frac(startY) : Mth.frac(startY));
++        double normalizedZDirection = normalizedZ * (zDirection > 0 ? 1.0D - Mth.frac(startZ) : Mth.frac(startZ));
++
++        net.minecraft.world.phys.BlockHitResult.Type result;
++
++        do {
++            if (normalizedXDirection > 1.0D && normalizedYDirection > 1.0D && normalizedZDirection > 1.0D) {
++                return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++            }
++
++            if (normalizedXDirection < normalizedYDirection) {
++                if (normalizedXDirection < normalizedZDirection) {
++                    currentX += xDirection;
++                    normalizedXDirection += normalizedX;
++                } else {
++                    currentZ += zDirection;
++                    normalizedZDirection += normalizedZ;
++                }
++            } else if (normalizedYDirection < normalizedZDirection) {
++                currentY += yDirection;
++                normalizedYDirection += normalizedY;
++            } else {
++                currentZ += zDirection;
++                normalizedZDirection += normalizedZ;
++            }
++
++            currentBlock.set(currentX, currentY, currentZ);
++            if (chunk.getPos().x != currentBlock.getX() >> 4 || chunk.getPos().z != currentBlock.getZ() >> 4) {
++                chunk = this.getChunkIfLoaded(currentBlock);
++                if (chunk == null) {
++                    return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++                }
++            }
++            result = this.rayTraceBlockDirect(vec3d, vec3d1, currentBlock, chunk.getBlockState(currentBlock), voxelshapecoll);
++        } while (result == null);
++
++        return result;
++    }
++    // Kaiiju end
++
+     public boolean isInWorldBounds(BlockPos pos) {
+         return pos.isInsideBuildHeightAndWorldBoundsHorizontal(this); // Paper - use better/optimized check
+     }

patches/removed/0018-Fix-off-thread-spider-addEffect.patch

@@ -0,0 +1,20 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Wed, 10 May 2023 17:58:37 +0300
+Subject: [PATCH] Fix off thread spider addEffect
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Spider.java b/src/main/java/net/minecraft/world/entity/monster/Spider.java
+index 05432184077752b1d0cb764a5e39ed875748b2d6..74a68ae68e3c774a63d0a5478dfcda6e7894a514 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Spider.java
++++ b/src/main/java/net/minecraft/world/entity/monster/Spider.java
+@@ -180,7 +180,9 @@ public class Spider extends Monster {
+             MobEffect mobeffectlist = entityspider_groupdataspider.effect;
+ 
+             if (mobeffectlist != null) {
++                this.getBukkitEntity().taskScheduler.schedule(task -> { // Kaiiju - Fix off thread spider add effect
+                 this.addEffect(new MobEffectInstance(mobeffectlist, -1), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.SPIDER_SPAWN); // CraftBukkit
++                }, null, 1); // Kaiiju - Fix off thread spider add effect
+             }
+         }
+ 

patches/removed/0025-Swap-distanceToSqr-and-target-test.patch

@@ -0,0 +1,46 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Sat, 17 Jun 2023 19:52:29 +0300
+Subject: [PATCH] Swap distanceToSqr and target test
+
+
+diff --git a/src/main/java/net/minecraft/world/level/EntityGetter.java b/src/main/java/net/minecraft/world/level/EntityGetter.java
+index b1a6a66ed02706c1adc36dcedfa415f5a24a25a0..97a5eca200fd606d6102e40f9b8c32c2e7652cf9 100644
+--- a/src/main/java/net/minecraft/world/level/EntityGetter.java
++++ b/src/main/java/net/minecraft/world/level/EntityGetter.java
+@@ -99,9 +99,9 @@ public interface EntityGetter {
+         Player player = null;
+ 
+         for(Player player2 : this.getLocalPlayers()) { // Folia - region threading
+-            if (targetPredicate == null || targetPredicate.test(player2)) {
++            if (true || targetPredicate == null || targetPredicate.test(player2)) { // Kaiiju - Move this down
+                 double e = player2.distanceToSqr(x, y, z);
+-                if ((maxDistance < 0.0D || e < maxDistance * maxDistance) && (d == -1.0D || e < d)) {
++                if ((maxDistance < 0.0D || e < maxDistance * maxDistance) && (d == -1.0D || e < d) && (targetPredicate == null || targetPredicate.test(player2))) { // Kaiiju
+                     d = e;
+                     player = player2;
+                 }
+@@ -147,9 +147,10 @@ public interface EntityGetter {
+     // Paper start
+     default boolean hasNearbyAlivePlayerThatAffectsSpawning(double x, double y, double z, double range) {
+         for (Player player : this.getLocalPlayers()) { // Folia - region threading
+-            if (EntitySelector.PLAYER_AFFECTS_SPAWNING.test(player)) { // combines NO_SPECTATORS and LIVING_ENTITY_STILL_ALIVE with an "affects spawning" check
++            if (true || EntitySelector.PLAYER_AFFECTS_SPAWNING.test(player)) { // combines NO_SPECTATORS and LIVING_ENTITY_STILL_ALIVE with an "affects spawning" check // Kaiiju - Move this down
+                 double distanceSqr = player.distanceToSqr(x, y, z);
+                 if (range < 0.0D || distanceSqr < range * range) {
++                    if (EntitySelector.PLAYER_AFFECTS_SPAWNING.test(player)) // Kaiiju
+                     return true;
+                 }
+             }
+@@ -199,9 +200,9 @@ public interface EntityGetter {
+         T livingEntity = null;
+ 
+         for(T livingEntity2 : entityList) {
+-            if (targetPredicate.test(entity, livingEntity2)) {
++            if (true || targetPredicate.test(entity, livingEntity2)) { // Kaiiju - Move this down
+                 double e = livingEntity2.distanceToSqr(x, y, z);
+-                if (d == -1.0D || e < d) {
++                if ((d == -1.0D || e < d) && targetPredicate.test(entity, livingEntity2)) { // Kaiiju
+                     d = e;
+                     livingEntity = livingEntity2;
+                 }

patches/removed/0032-Fix-visual-respawn-issue.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Wed, 21 Jun 2023 04:15:44 +0300
+Subject: [PATCH] Fix visual respawn issue
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 10c7f5c6fc0e5cb8aafbe125dd68635a37b7b1b9..6f589e7e4bbed0b2fa87403c86f18d36672cf1d0 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -633,6 +633,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+         ++this.deathTime;
+         if (this.deathTime >= 20 && !this.level().isClientSide() && !this.isRemoved() && !this.broadcastedDeath) { // Folia - region threading
+             this.level().broadcastEntityEvent(this, (byte) 60);
++            this.broadcastedDeath = true; // Kaiiju - Fix respawn issue / Visual bug
+             if (!(this instanceof ServerPlayer)) this.remove(Entity.RemovalReason.KILLED); // Folia - region threading - don't remove, we want the tick scheduler to be running
+             if ((this instanceof ServerPlayer)) this.unRide(); // Folia - region threading - unmount player when dead
+         }

patches/removed/0038-Don-t-kick-player-on-bad-packet.patch

@@ -0,0 +1,46 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 2 Jul 2023 19:13:14 +0300
+Subject: [PATCH] Don't kick player on bad packet
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 12738605442b9cdd086b2b29ff372d12552993b8..c0432bb14df86fe070c90deb33aa8c535cfe46f3 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -206,10 +206,12 @@ public class KaiijuConfig {
+     
+     public static boolean sendNullEntityPackets = true;
+     public static boolean alternateKeepAlive = false;
++    public static boolean kickPlayerOnBadPacket = true;
+ 
+     private static void networkSettings() {
+         sendNullEntityPackets = getBoolean("network.send-null-entity-packets", sendNullEntityPackets);
+         alternateKeepAlive = getBoolean("network.alternate-keepalive", alternateKeepAlive);
++        kickPlayerOnBadPacket = getBoolean("network.kick-player-on-bad-packet", kickPlayerOnBadPacket);
+     }
+ 
+     public static boolean disableVanishApi = false;
+diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
+index f6ccb6eab566b44c3460376d46df1f2cf3d7b19d..13e5aeb0c04d27408ffbc6b11582426a7f2eb0f0 100644
+--- a/src/main/java/net/minecraft/network/Connection.java
++++ b/src/main/java/net/minecraft/network/Connection.java
+@@ -271,12 +271,18 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
+                         ConnectionProtocol enumprotocol = this.getCurrentProtocol();
+                         Packet<?> packet = enumprotocol == ConnectionProtocol.LOGIN ? new ClientboundLoginDisconnectPacket(ichatmutablecomponent) : new ClientboundDisconnectPacket(ichatmutablecomponent);
+ 
++                        // Kaiiju start - Don't kick player on bad packet
++                        if (dev.kaiijumc.kaiiju.KaiijuConfig.kickPlayerOnBadPacket
++                            || throwable instanceof io.netty.channel.unix.Errors.NativeIoException) {
++                        // Kaiiju end
+                         this.send((Packet) packet, PacketSendListener.thenRun(() -> {
+                             this.disconnect(ichatmutablecomponent);
+                         }));
+                         this.setReadOnly();
++                        } // Kaiiju - Don't kick player on bad packet
+                     } else {
+                         Connection.LOGGER.debug("Double fault", throwable);
++                        if (dev.kaiijumc.kaiiju.KaiijuConfig.kickPlayerOnBadPacket) // Kaiiju - Don't kick player on bad packet
+                         this.disconnect(ichatmutablecomponent);
+                     }
+                 }

patches/removed/0039-Fix-teleportAsync-rotation-API.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: kugge <sofiane.djerbi38@gmail.com>
+Date: Thu, 22 Jun 2023 20:32:58 +0200
+Subject: [PATCH] Fix teleportAsync rotation API
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+index 76bcfda336e9cfa039d80ea3ccbebbc3d2b13f7f..24617b3994c0f148f1c17928e18aa1e1a784e6f5 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+@@ -1329,7 +1329,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
+             boolean success = nmsEntity.teleportAsync(
+                 ((CraftWorld)locationClone.getWorld()).getHandle(),
+                 new net.minecraft.world.phys.Vec3(locationClone.getX(), locationClone.getY(), locationClone.getZ()),
+-                null, null, net.minecraft.world.phys.Vec3.ZERO,
++                locationClone.getYaw(), locationClone.getPitch(), net.minecraft.world.phys.Vec3.ZERO, // Kaiiju - fix teleportAsync() rotation
+                 cause == null ? TeleportCause.UNKNOWN : cause,
+                 Entity.TELEPORT_FLAG_LOAD_CHUNK | Entity.TELEPORT_FLAG_UNMOUNT, // preserve behavior with old API: dismount the entity so it can teleport
+                 (Entity entityTp) -> {

patches/removed/0045-Improve-container-checking-with-a-bitset.patch

@@ -0,0 +1,458 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Paul Sauve <paul@technove.co>
+Date: Tue, 1 Aug 2023 03:38:09 +0200
+Subject: [PATCH] Improve container checking with a bitset
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/structs/ItemListWithBitset.java b/src/main/java/dev/kaiijumc/kaiiju/structs/ItemListWithBitset.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..ee32b7c4a1ae1e23149694ecba5ab7bd347d6ca6
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/structs/ItemListWithBitset.java
+@@ -0,0 +1,114 @@
++package dev.kaiijumc.kaiiju.structs;
++
++
++import net.minecraft.core.NonNullList;
++import net.minecraft.world.item.ItemStack;
++import org.apache.commons.lang.Validate;
++import org.jetbrains.annotations.NotNull;
++
++import java.util.AbstractList;
++import java.util.Arrays;
++import java.util.List;
++
++public class ItemListWithBitset extends AbstractList<ItemStack> {
++    public static ItemListWithBitset fromList(List<ItemStack> list) {
++        if (list instanceof ItemListWithBitset ours) {
++            return ours;
++        }
++        return new ItemListWithBitset(list);
++    }
++
++    private static ItemStack[] createArray(int size) {
++        ItemStack[] array = new ItemStack[size];
++        Arrays.fill(array, ItemStack.EMPTY);
++        return array;
++    }
++
++    private final ItemStack[] items;
++
++    private long bitSet = 0;
++    private final long allBits;
++
++    private static class OurNonNullList extends NonNullList<ItemStack> {
++        protected OurNonNullList(List<ItemStack> delegate) {
++            super(delegate, ItemStack.EMPTY);
++        }
++    }
++
++    public final NonNullList<ItemStack> nonNullList = new OurNonNullList(this);
++
++    private ItemListWithBitset(List<ItemStack> list) {
++        this(list.size());
++
++        for (int i = 0; i < list.size(); i++) {
++            this.set(i, list.get(i));
++        }
++    }
++
++    public ItemListWithBitset(int size) {
++        Validate.isTrue(size < Long.BYTES * 8, "size is too large");
++
++        this.items = createArray(size);
++        this.allBits = ((1L << size) - 1);
++    }
++
++    public boolean isCompletelyEmpty() {
++        return this.bitSet == 0;
++    }
++
++    public boolean hasFullStacks() {
++        return (this.bitSet & this.allBits) == allBits;
++    }
++
++    @Override
++    public ItemStack set(int index, @NotNull ItemStack itemStack) {
++        ItemStack existing = this.items[index];
++
++        this.items[index] = itemStack;
++
++        if (itemStack == ItemStack.EMPTY) {
++            this.bitSet &= ~(1L << index);
++        } else {
++            this.bitSet |= 1L << index;
++        }
++
++        return existing;
++    }
++
++    @NotNull
++    @Override
++    public ItemStack get(int var0) {
++        return this.items[var0];
++    }
++
++    @Override
++    public int size() {
++        return this.items.length;
++    }
++
++    @Override
++    public void clear() {
++        Arrays.fill(this.items, ItemStack.EMPTY);
++    }
++
++    // these are unsupported for block inventories which have a static size
++    @Override
++    public void add(int var0, ItemStack var1) {
++        throw new UnsupportedOperationException();
++    }
++
++    @Override
++    public ItemStack remove(int var0) {
++        throw new UnsupportedOperationException();
++    }
++
++    @Override
++    public String toString() {
++        return "ItemListWithBitset{" +
++          "items=" + Arrays.toString(items) +
++          ", bitSet=" + Long.toString(bitSet, 2) +
++          ", allBits=" + Long.toString(allBits, 2) +
++          ", size=" + this.items.length +
++          '}';
++    }
++}
+diff --git a/src/main/java/net/minecraft/world/CompoundContainer.java b/src/main/java/net/minecraft/world/CompoundContainer.java
+index 241fec02e6869c638d3a160819b32173a081467b..62848ca68f532fa14241320df76d180c13072c34 100644
+--- a/src/main/java/net/minecraft/world/CompoundContainer.java
++++ b/src/main/java/net/minecraft/world/CompoundContainer.java
+@@ -64,6 +64,23 @@ public class CompoundContainer implements Container {
+         this.container2 = second;
+     }
+ 
++    // Kaiiju start - airplane - improve container checking with a bitset
++    @Override
++   public boolean hasEmptySlot(net.minecraft.core.Direction enumdirection) {
++        return this.container1.hasEmptySlot(null) || this.container2.hasEmptySlot(null);
++    }
++
++    @Override
++   public boolean isCompletelyFull(net.minecraft.core.Direction enumdirection) {
++        return this.container1.isCompletelyFull(null) && this.container2.isCompletelyFull(null);
++    }
++
++    @Override
++    public boolean isCompletelyEmpty(net.minecraft.core.Direction enumdirection) {
++        return this.container1.isCompletelyEmpty(null) && this.container2.isCompletelyEmpty(null);
++    }
++    // Kaiiju end
++
+     @Override
+     public int getContainerSize() {
+         return this.container1.getContainerSize() + this.container2.getContainerSize();
+diff --git a/src/main/java/net/minecraft/world/Container.java b/src/main/java/net/minecraft/world/Container.java
+index 04b1531572e8fff1e46fe1c94e7fc863841e0f66..ac1e21a4fc210424ea57c247d03914c54129de9c 100644
+--- a/src/main/java/net/minecraft/world/Container.java
++++ b/src/main/java/net/minecraft/world/Container.java
+@@ -13,6 +13,63 @@ import org.bukkit.craftbukkit.entity.CraftHumanEntity;
+ // CraftBukkit end
+ 
+ public interface Container extends Clearable {
++    // Kaiiju start - airplane - allow the inventory to override and optimize these frequent calls
++    default boolean hasEmptySlot(@org.jetbrains.annotations.Nullable net.minecraft.core.Direction enumdirection) { // there is a slot with 0 items in it
++        if (this instanceof WorldlyContainer worldlyContainer) {
++            for (int i : worldlyContainer.getSlotsForFace(enumdirection)) {
++                if (this.getItem(i).isEmpty()) {
++                    return true;
++                }
++            }
++        } else {
++            int size = this.getContainerSize();
++            for (int i = 0; i < size; i++) {
++                if (this.getItem(i).isEmpty()) {
++                    return true;
++                }
++            }
++        }
++        return false;
++    }
++
++    default boolean isCompletelyFull(@org.jetbrains.annotations.Nullable net.minecraft.core.Direction enumdirection) { // every stack is maxed
++        if (this instanceof WorldlyContainer worldlyContainer) {
++            for (int i : worldlyContainer.getSlotsForFace(enumdirection)) {
++                ItemStack itemStack = this.getItem(i);
++                if (itemStack.getCount() < itemStack.getMaxStackSize()) {
++                    return false;
++                }
++            }
++        } else {
++            int size = this.getContainerSize();
++            for (int i = 0; i < size; i++) {
++                ItemStack itemStack = this.getItem(i);
++                if (itemStack.getCount() < itemStack.getMaxStackSize()) {
++                    return false;
++                }
++            }
++        }
++        return true;
++    }
++
++    default boolean isCompletelyEmpty(@org.jetbrains.annotations.Nullable net.minecraft.core.Direction enumdirection) {
++        if (this instanceof WorldlyContainer worldlyContainer) {
++            for (int i : worldlyContainer.getSlotsForFace(enumdirection)) {
++                if (!this.getItem(i).isEmpty()) {
++                    return false;
++                }
++            }
++        } else {
++            int size = this.getContainerSize();
++            for (int i = 0; i < size; i++) {
++                if (!this.getItem(i).isEmpty()) {
++                    return false;
++                }
++            }
++        }
++        return true;
++    }
++    // Kaiiju end
+ 
+     int LARGE_MAX_STACK_SIZE = 64;
+     int DEFAULT_DISTANCE_LIMIT = 8;
+diff --git a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java
+index 272095d7a09ab41227d741172735f66fd2798ce1..1f2e2d7726abd63bb46697697c91696387c819a2 100644
+--- a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java
++++ b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java
+@@ -28,6 +28,7 @@ import org.bukkit.inventory.InventoryHolder;
+ public abstract class AbstractMinecartContainer extends AbstractMinecart implements ContainerEntity {
+ 
+     private NonNullList<ItemStack> itemStacks;
++    private dev.kaiijumc.kaiiju.structs.ItemListWithBitset itemStacksOptimized; // Kaiiju - airplane - implement ItemListWithBitset
+     @Nullable
+     public ResourceLocation lootTable;
+     public long lootTableSeed;
+@@ -89,12 +90,18 @@ public abstract class AbstractMinecartContainer extends AbstractMinecart impleme
+ 
+     protected AbstractMinecartContainer(EntityType<?> type, Level world) {
+         super(type, world);
+-        this.itemStacks = NonNullList.withSize(this.getContainerSize(), ItemStack.EMPTY); // CraftBukkit - SPIGOT-3513
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.itemStacksOptimized = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(this.getContainerSize()); // CraftBukkit - SPIGOT-3513
++        this.itemStacks = this.itemStacksOptimized.nonNullList;
++        // Kaiiju end
+     }
+ 
+     protected AbstractMinecartContainer(EntityType<?> type, double x, double y, double z, Level world) {
+         super(type, world, x, y, z);
+-        this.itemStacks = NonNullList.withSize(this.getContainerSize(), ItemStack.EMPTY); // CraftBukkit - SPIGOT-3513
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.itemStacksOptimized = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(this.getContainerSize()); // CraftBukkit - SPIGOT-3513
++        this.itemStacks = this.itemStacksOptimized.nonNullList;
++        // Kaiiju end
+     }
+ 
+     @Override
+@@ -156,6 +163,10 @@ public abstract class AbstractMinecartContainer extends AbstractMinecart impleme
+     protected void readAdditionalSaveData(CompoundTag nbt) {
+         super.readAdditionalSaveData(nbt);
+         this.lootableData.loadNbt(nbt); // Paper
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.itemStacksOptimized = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(this.getContainerSize()); // CraftBukkit - SPIGOT-3513
++        this.itemStacks = this.itemStacksOptimized.nonNullList;
++        // Kaiiju end
+         this.readChestVehicleSaveData(nbt);
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/ChestBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/ChestBlockEntity.java
+index a71414397bd45ee7bcacfeef0041d80dfa25f114..67f69540e6c217070f8d2af8908d4eb6f2b5c1c1 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/ChestBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/ChestBlockEntity.java
+@@ -31,6 +31,7 @@ import org.bukkit.entity.HumanEntity;
+ public class ChestBlockEntity extends RandomizableContainerBlockEntity implements LidBlockEntity {
+ 
+     private static final int EVENT_SET_OPEN_COUNT = 1;
++    private dev.kaiijumc.kaiiju.structs.ItemListWithBitset optimizedItems; // Kaiiju - airplane - implement ItemListWithBitset
+     private NonNullList<ItemStack> items;
+     public final ContainerOpenersCounter openersCounter;
+     private final ChestLidController chestLidController;
+@@ -65,9 +66,14 @@ public class ChestBlockEntity extends RandomizableContainerBlockEntity implement
+     }
+     // CraftBukkit end
+ 
++    private final boolean isNative = getClass().equals(ChestBlockEntity.class); // Kaiiju - airplane
++
+     protected ChestBlockEntity(BlockEntityType<?> type, BlockPos pos, BlockState state) {
+         super(type, pos, state);
+-        this.items = NonNullList.withSize(27, ItemStack.EMPTY);
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.optimizedItems = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(27);
++        this.items = this.optimizedItems.nonNullList;
++        // Kaiiju end
+         this.openersCounter = new ContainerOpenersCounter() {
+             @Override
+             protected void onOpen(Level world, BlockPos pos, BlockState state) {
+@@ -98,6 +104,23 @@ public class ChestBlockEntity extends RandomizableContainerBlockEntity implement
+         this.chestLidController = new ChestLidController();
+     }
+ 
++    // Kaiiju start - airplane - improve container checking with a bitset
++    @Override
++    public boolean hasEmptySlot(Direction enumdirection) {
++        return isNative ? !this.optimizedItems.hasFullStacks() : super.hasEmptySlot(enumdirection);
++    }
++
++    @Override
++    public boolean isCompletelyFull(Direction enumdirection) {
++        return isNative ? this.optimizedItems.hasFullStacks() && super.isCompletelyFull(enumdirection) : super.isCompletelyFull(enumdirection);
++    }
++
++    @Override
++    public boolean isCompletelyEmpty(Direction enumdirection) {
++        return isNative && this.optimizedItems.isCompletelyEmpty() || super.isCompletelyEmpty(enumdirection);
++    }
++    // Kaiiju end
++
+     public ChestBlockEntity(BlockPos pos, BlockState state) {
+         this(BlockEntityType.CHEST, pos, state);
+     }
+@@ -115,7 +138,10 @@ public class ChestBlockEntity extends RandomizableContainerBlockEntity implement
+     @Override
+     public void load(CompoundTag nbt) {
+         super.load(nbt);
+-        this.items = NonNullList.withSize(this.getContainerSize(), ItemStack.EMPTY);
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.optimizedItems = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(this.getContainerSize());
++        this.items = this.optimizedItems.nonNullList;
++        // Kaiiju end
+         if (!this.tryLoadLootTable(nbt)) {
+             ContainerHelper.loadAllItems(nbt, this.items);
+         }
+@@ -187,7 +213,10 @@ public class ChestBlockEntity extends RandomizableContainerBlockEntity implement
+ 
+     @Override
+     protected void setItems(NonNullList<ItemStack> list) {
+-        this.items = list;
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.optimizedItems = dev.kaiijumc.kaiiju.structs.ItemListWithBitset.fromList(list);
++        this.items = this.optimizedItems.nonNullList;
++        // Kaiiju end
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java
+index 8781a7cebf66007158286f265e2adbaf40c1d2ff..6d55a6687060bdb6b2286e294d09ef0093b1625e 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java
+@@ -48,6 +48,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+     public static final int MOVE_ITEM_SPEED = 8;
+     public static final int HOPPER_CONTAINER_SIZE = 5;
+     private NonNullList<ItemStack> items;
++    private dev.kaiijumc.kaiiju.structs.ItemListWithBitset optimizedItems; // Kaiiju - airplane - implement ItemListWithBitset
+     private int cooldownTime;
+     private long tickedGameTime;
+ 
+@@ -83,14 +84,37 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+ 
+     public HopperBlockEntity(BlockPos pos, BlockState state) {
+         super(BlockEntityType.HOPPER, pos, state);
+-        this.items = NonNullList.withSize(5, ItemStack.EMPTY);
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.optimizedItems = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(5);
++        this.items = this.optimizedItems.nonNullList;
++        // Kaiiju end
+         this.cooldownTime = -1;
+     }
+ 
++    // Kaiiju start - airplane - improve container checking with a bitset
++    @Override
++    public boolean hasEmptySlot(Direction enumdirection) {
++        return !this.optimizedItems.hasFullStacks();
++    }
++
++    @Override
++    public boolean isCompletelyFull(Direction enumdirection) {
++        return this.optimizedItems.hasFullStacks() && super.isCompletelyFull(enumdirection);
++    }
++
++    @Override
++    public boolean isCompletelyEmpty(Direction enumdirection) {
++        return this.optimizedItems.isCompletelyEmpty() || super.isCompletelyEmpty(enumdirection);
++    }
++    // Kaiiju end
++
+     @Override
+     public void load(CompoundTag nbt) {
+         super.load(nbt);
+-        this.items = NonNullList.withSize(this.getContainerSize(), ItemStack.EMPTY);
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.optimizedItems = new dev.kaiijumc.kaiiju.structs.ItemListWithBitset(this.getContainerSize());
++        this.items = this.optimizedItems.nonNullList;
++        // Kaiiju end
+         if (!this.tryLoadLootTable(nbt)) {
+             ContainerHelper.loadAllItems(nbt, this.items);
+         }
+@@ -162,7 +186,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+                     flag = HopperBlockEntity.ejectItems(world, pos, state, (Container) blockEntity, blockEntity); // CraftBukkit
+                 }
+ 
+-                if (!blockEntity.inventoryFull()) {
++                if (!blockEntity.optimizedItems.hasFullStacks() || !blockEntity.inventoryFull()) { // Kaiiju - airplane
+                     flag |= booleansupplier.getAsBoolean();
+                 }
+ 
+@@ -456,11 +480,11 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+     }
+ 
+     private static boolean isFullContainer(Container inventory, Direction direction) {
+-        return allMatch(inventory, direction, STACK_SIZE_TEST); // Paper - no streams
++        return inventory.isCompletelyFull(direction); // Kaiiju - airplane - use bitsets
+     }
+ 
+     private static boolean isEmptyContainer(Container inv, Direction facing) {
+-        return allMatch(inv, facing, IS_EMPTY_TEST);
++        return inv.isCompletelyEmpty(facing); // Kaiiju - airplane - use bitsets
+     }
+ 
+     public static boolean suckInItems(Level world, Hopper hopper) {
+@@ -650,7 +674,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+ 
+         if (HopperBlockEntity.canPlaceItemInContainer(to, stack, slot, side)) {
+             boolean flag = false;
+-            boolean flag1 = to.isEmpty();
++            boolean flag1 = to.isCompletelyEmpty(side); // Kaiiju - airplane - use bitsets
+ 
+             if (itemstack1.isEmpty()) {
+                 // Spigot start - SPIGOT-6693, InventorySubcontainer#setItem
+@@ -845,7 +869,10 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+ 
+     @Override
+     protected void setItems(NonNullList<ItemStack> list) {
+-        this.items = list;
++        // Kaiiju start - airplane - use ItemListWithBitset
++        this.optimizedItems = dev.kaiijumc.kaiiju.structs.ItemListWithBitset.fromList(list);
++        this.items = this.optimizedItems.nonNullList;
++        // Kaiiju end
+     }
+ 
+     public static void entityInside(Level world, BlockPos pos, BlockState state, Entity entity, HopperBlockEntity blockEntity) {
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
+index 081691f9710ff1115e4308f79ed49fbc38941193..648e28c5fba5c62e65f83fbb5ebc8836ffb166a9 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
+@@ -95,14 +95,7 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc
+     @Override
+     public boolean isEmpty() {
+         this.unpackLootTable((Player)null);
+-        // Paper start
+-        for (final ItemStack itemStack : this.getItems()) {
+-            if (!itemStack.isEmpty()) {
+-                return false;
+-            }
+-        }
+-        return true;
+-        // Paper end
++        return this.isCompletelyEmpty(null); // Kaiiju - airplane - use super
+     }
+ 
+     @Override

patches/server/0001-Rebranding.patch

@@ -1,14 +1,14 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Fri, 10 Feb 2023 02:58:46 +0200
-Subject: [PATCH] Kaiiju Rebranding
+Subject: [PATCH] Rebranding
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index dd53b1ffaff8dbaea0cf21c489a90162a496a026..6dd416f65755ca0542e6661b8716672264120d59 100644
+index 0dbcd376ab443af4853f0a02612866d71c5e9164..b374c8caf62db3e1325a3cb01bdd890a835541af 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -8,7 +8,7 @@ plugins {
+@@ -14,7 +14,7 @@ val alsoShade: Configuration by configurations.creating
  
  dependencies {
      // Folia start
@@ -17,7 +17,7 @@ index dd53b1ffaff8dbaea0cf21c489a90162a496a026..6dd416f65755ca0542e6661b87166722
      implementation("io.papermc.paper:paper-mojangapi:1.19.3-R0.1-SNAPSHOT") {
          exclude("io.papermc.paper", "paper-api")
      }
-@@ -66,7 +66,7 @@ tasks.jar {
+@@ -76,7 +76,7 @@ tasks.jar {
          attributes(
              "Main-Class" to "org.bukkit.craftbukkit.Main",
              "Implementation-Title" to "CraftBukkit",
@@ -27,7 +27,7 @@ index dd53b1ffaff8dbaea0cf21c489a90162a496a026..6dd416f65755ca0542e6661b87166722
              "Specification-Title" to "Bukkit",
              "Specification-Version" to project.version,
 diff --git a/src/main/java/com/destroystokyo/paper/Metrics.java b/src/main/java/com/destroystokyo/paper/Metrics.java
-index 58dc84b7b3b04c2d0b00fc5fac5303d3378b3467..a128b1fabd4aadfe26a8375903c0451d7a65983a 100644
+index cb60d58d4a7556dd896f31d0cd249f860bb3ef84..c9ccc016044f2b179c291d9d5b2a43967cca119a 100644
 --- a/src/main/java/com/destroystokyo/paper/Metrics.java
 +++ b/src/main/java/com/destroystokyo/paper/Metrics.java
 @@ -593,7 +593,7 @@ public class Metrics {
@@ -48,15 +48,14 @@ index 58dc84b7b3b04c2d0b00fc5fac5303d3378b3467..a128b1fabd4aadfe26a8375903c0451d
                  metrics.addCustomChart(new Metrics.DrilldownPie("java_version", () -> {
                      Map<String, Map<String, Integer>> map = new HashMap<>();
 diff --git a/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
-index 719b0e318a85d4a1fb8f616deeb31193495b462e..751b2bc79d29cb21c38cf5d35e3711149ec7b011 100644
+index e2f704c115fd6e00960bb56bb0779f1100c89c17..95bc514df2022dde265b84490d3d0db002685024 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
-@@ -19,10 +19,11 @@ import java.util.stream.StreamSupport;
+@@ -20,9 +20,11 @@ import java.util.stream.StreamSupport;
- 
  public class PaperVersionFetcher implements VersionFetcher {
      private static final java.util.regex.Pattern VER_PATTERN = java.util.regex.Pattern.compile("^([0-9\\.]*)\\-.*R"); // R is an anchor, will always give '-R' at end
--    private static final String GITHUB_BRANCH_NAME = "master";
+     private static final String GITHUB_BRANCH_NAME = "master";
--    private static final String DOWNLOAD_PAGE = "https://papermc.io/downloads";
+-    private static final String DOWNLOAD_PAGE = "https://papermc.io/downloads/paper";
 +    // Kaiiju start
 +    private static final String DOWNLOAD_PAGE = "https://github.com/KaiijuMC/Kaiiju/releases";
 +    private static int distance = -2; public int distance() { return distance; }
@@ -66,7 +65,7 @@ index 719b0e318a85d4a1fb8f616deeb31193495b462e..751b2bc79d29cb21c38cf5d35e371114
      @Override
      public long getCacheTime() {
          return 720000;
-@@ -31,8 +32,8 @@ public class PaperVersionFetcher implements VersionFetcher {
+@@ -31,8 +33,8 @@ public class PaperVersionFetcher implements VersionFetcher {
      @Nonnull
      @Override
      public Component getVersionMessage(@Nonnull String serverVersion) {
@@ -77,7 +76,7 @@ index 719b0e318a85d4a1fb8f616deeb31193495b462e..751b2bc79d29cb21c38cf5d35e371114
          final Component history = getHistory();
  
          return history != null ? TextComponent.ofChildren(updateMessage, Component.newline(), history) : updateMessage;
-@@ -45,7 +46,7 @@ public class PaperVersionFetcher implements VersionFetcher {
+@@ -45,7 +47,7 @@ public class PaperVersionFetcher implements VersionFetcher {
                  String result = matcher.group();
                  mcVer = result.substring(0, result.length() - 2); // strip 'R' anchor and trailing '-'
              } else {
@@ -86,19 +85,19 @@ index 719b0e318a85d4a1fb8f616deeb31193495b462e..751b2bc79d29cb21c38cf5d35e371114
                  org.bukkit.Bukkit.getLogger().warning("Pattern: " + VER_PATTERN.toString());
                  org.bukkit.Bukkit.getLogger().warning("Version: " + org.bukkit.Bukkit.getBukkitVersion());
              }
-@@ -56,6 +57,8 @@ public class PaperVersionFetcher implements VersionFetcher {
+@@ -56,6 +58,7 @@ public class PaperVersionFetcher implements VersionFetcher {
  
      private static Component getUpdateStatusMessage(@Nonnull String repo, @Nonnull String branch, @Nonnull String versionInfo) {
          int distance;
-+        // Kaiiju start - disable jenkins/api checking
++        /* // Kaiiju - disable jenkins/api checking
-+        /*
          try {
              int jenkinsBuild = Integer.parseInt(versionInfo);
              distance = fetchDistanceFromSiteApi(jenkinsBuild, getMinecraftVersion());
-@@ -63,6 +66,10 @@ public class PaperVersionFetcher implements VersionFetcher {
+@@ -63,6 +66,11 @@ public class PaperVersionFetcher implements VersionFetcher {
              versionInfo = versionInfo.replace("\"", "");
              distance = fetchDistanceFromGitHub(repo, branch, versionInfo);
          }
++        // Kaiiju start - disable jenkins/api checking
 +        */
 +        versionInfo = versionInfo.replace("\"", "");
 +        distance = fetchDistanceFromGitHub(repo, branch, versionInfo);
@@ -120,7 +119,7 @@ index c5d5648f4ca603ef2b1df723b58f9caf4dd3c722..1c7b5d91e914efbcfb50c6137c776078
                  .completer(new ConsoleCommandCompleter(this.server))
                  .option(LineReader.Option.COMPLETE_IN_WORD, true);
 diff --git a/src/main/java/net/minecraft/CrashReport.java b/src/main/java/net/minecraft/CrashReport.java
-index abe37c7c3c6f5ab73afd738ec78f06d7e4d2ed96..52fc6bb99f6024273c7438d01314b576da66bd1a 100644
+index 1d714d3eff11ed14f218656008190017494d4830..d39859f19afc4372999782a209f3836c6397f6d2 100644
 --- a/src/main/java/net/minecraft/CrashReport.java
 +++ b/src/main/java/net/minecraft/CrashReport.java
 @@ -125,7 +125,7 @@ public class CrashReport {
@@ -133,10 +132,10 @@ index abe37c7c3c6f5ab73afd738ec78f06d7e4d2ed96..52fc6bb99f6024273c7438d01314b576
          stringbuilder.append(CrashReport.DATE_TIME_FORMATTER.format(ZonedDateTime.now()));
          stringbuilder.append("\n");
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index f5721f6d719b7055fdccc81d5e67ed758e90cb10..0696ad97437726fd6a13badfe7db0617dfbfb1ad 100644
+index 2f2a8a0c05024115f3b7bd69ae400fadff2f36c5..4d13cfdb642a67a5db20b1567868f24a37d949c3 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -999,7 +999,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -982,7 +982,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
          shutdownThread = Thread.currentThread();
          org.spigotmc.WatchdogThread.doStop(); // Paper
          if (false && !isSameThread()) { // Folia - region threading
@@ -155,10 +154,10 @@ index f5721f6d719b7055fdccc81d5e67ed758e90cb10..0696ad97437726fd6a13badfe7db0617
  
      public SystemReport fillSystemReport(SystemReport details) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-index 32c9b38036052649b7b5fb25d7c4a49fdd1ca972..176f3acec268dad80cc90029edd88e7a0c3e8885 100644
+index a50a9ffda4875061fb8840873115119f334f0519..66723512de9b9fc92cdeeabb2cf96aa5fad10aaa 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-@@ -256,7 +256,7 @@ import javax.annotation.Nullable; // Paper
+@@ -267,7 +267,7 @@ import javax.annotation.Nullable; // Paper
  import javax.annotation.Nonnull; // Paper
  
  public final class CraftServer implements Server {
@@ -168,10 +167,10 @@ index 32c9b38036052649b7b5fb25d7c4a49fdd1ca972..176f3acec268dad80cc90029edd88e7a
      private final String bukkitVersion = Versioning.getBukkitVersion();
      private final Logger logger = Logger.getLogger("Minecraft");
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
-index bd115a08512e6f4c13bc30ce2b05c7378754754f..d1b0483448a42f2d790eae353904bf6890178e1b 100644
+index 28062755016008d0796676119fdd53d4a3947e20..b4d25d15797d37e644e85c5d2ba6211434a1ecbe 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
-@@ -891,7 +891,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+@@ -920,7 +920,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
              return EntityCategory.WATER;
          }
  
@@ -181,13 +180,13 @@ index bd115a08512e6f4c13bc30ce2b05c7378754754f..d1b0483448a42f2d790eae353904bf68
  
      @Override
 diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
-index 9136fb30db749737e9f189d0901024fcad02e402..ac23657071ac5eb951706374ee16a4274728c5bd 100644
+index eb84a8dd97f92de4a7dd3826d9e124a442cba565..e24d653fafcd88e01786b77539c506bcf3751c2c 100644
 --- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
 +++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
-@@ -504,7 +504,7 @@ public class CraftScheduler implements BukkitScheduler {
+@@ -501,7 +501,7 @@ public class CraftScheduler implements BukkitScheduler {
                  this.parsePending();
              } else {
-                 //this.debugTail = this.debugTail.setNext(new CraftAsyncDebugger(currentTick + CraftScheduler.RECENT_TICKS, task.getOwner(), task.getTaskClass())); // Paper
+                 // this.debugTail = this.debugTail.setNext(new CraftAsyncDebugger(currentTick + CraftScheduler.RECENT_TICKS, task.getOwner(), task.getTaskClass())); // Paper
 -                task.getOwner().getLogger().log(Level.SEVERE, "Unexpected Async Task in the Sync Scheduler. Report this to Paper"); // Paper
 +                task.getOwner().getLogger().log(Level.SEVERE, "Unexpected Async Task in the Sync Scheduler. Report this to Kaiiju"); // Paper // Kaiiju
                  // We don't need to parse pending
@@ -207,7 +206,7 @@ index e9b6ca3aa25e140467ae866d572483050ea3fa0e..5df2b0fceebaaa863f4f143c8f29e808
  
          if (stream != null) {
 diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
-index e9fa7faaa4451e36b3908cbcbbe0baf213abde96..eea30035f7ce41f8f3c60afbbd255ae42166a306 100644
+index 50c72e5db369a180f425eaaa0411cb8871bc3463..c556a1368ca089aad9d7f2f422924fea140e728d 100644
 --- a/src/main/java/org/spigotmc/WatchdogThread.java
 +++ b/src/main/java/org/spigotmc/WatchdogThread.java
 @@ -155,14 +155,14 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa

patches/server/0002-Empty-configuration.patch

@@ -1,7 +1,7 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Fri, 10 Feb 2023 05:53:10 +0200
-Subject: [PATCH] Kaiiju Configuration
+Subject: [PATCH] Empty configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
@@ -207,7 +207,7 @@ index 0000000000000000000000000000000000000000..7da7e0aeb5eac9ac73a3570e716f1ceb
 +}
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..dd4c3ca77acb3aeefc69b8eb948b8b202ff87a19
+index 0000000000000000000000000000000000000000..87ca934473f3b9553c1b9b3ed60e0fa07838c711
 --- /dev/null
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 @@ -0,0 +1,125 @@
@@ -336,13 +336,12 @@ index 0000000000000000000000000000000000000000..dd4c3ca77acb3aeefc69b8eb948b8b20
 +        return value.isEmpty() ? fallback : value;
 +    }
 +}
-\ No newline at end of file
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java b/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..08a2375b90a2088e2bdfb3e316144677346a3dd6
+index 0000000000000000000000000000000000000000..6fac162e0ec057af9f3336314d5663554cef0490
 --- /dev/null
 +++ b/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java
-@@ -0,0 +1,67 @@
+@@ -0,0 +1,66 @@
 +package dev.kaiijumc.kaiiju.command;
 +
 +import dev.kaiijumc.kaiiju.KaiijuConfig;
@@ -381,16 +380,15 @@ index 0000000000000000000000000000000000000000..08a2375b90a2088e2bdfb3e316144677
 +    @Override
 +    public boolean execute(CommandSender sender, String commandLabel, String[] args) {
 +        if (!testPermission(sender)) return true;
-+        String prefix = ChatColor.of(Color.decode("#F25DF6")) + "Kaiiju » " + ChatColor.RESET;
 +
 +        if (args.length != 1) {
-+            sender.sendMessage(prefix + ChatColor.RED + "Usage: " + usageMessage);
++            sender.sendMessage(ChatColor.RED + "Usage: " + usageMessage);
 +            return false;
 +        }
 +
 +        if (args[0].equalsIgnoreCase("reload")) {
-+            Command.broadcastCommandMessage(sender, prefix + ChatColor.RED + "Please note that this command is not supported and may cause issues.");
++            Command.broadcastCommandMessage(sender, ChatColor.RED + "Please note that this command is not supported and may cause issues.");
-+            Command.broadcastCommandMessage(sender, prefix + ChatColor.RED + "If you encounter any issues please use the /stop command to restart your server.");
++            Command.broadcastCommandMessage(sender, ChatColor.RED + "If you encounter any issues please use the /stop command to restart your server.");
 +
 +            MinecraftServer console = MinecraftServer.getServer();
 +            KaiijuConfig.reload((File) console.options.valueOf("kaiiju-settings"));
@@ -399,7 +397,7 @@ index 0000000000000000000000000000000000000000..08a2375b90a2088e2bdfb3e316144677
 +            }
 +            console.server.reloadCount++;
 +
-+            Command.broadcastCommandMessage(sender, prefix + ChatColor.GREEN + "Kaiiju config reload complete.");
++            Command.broadcastCommandMessage(sender, ChatColor.GREEN + "Kaiiju config reload complete.");
 +        } else if (args[0].equalsIgnoreCase("version")) {
 +            Command verCmd = org.bukkit.Bukkit.getServer().getCommandMap().getCommand("version");
 +            if (verCmd != null) {
@@ -412,7 +410,7 @@ index 0000000000000000000000000000000000000000..08a2375b90a2088e2bdfb3e316144677
 +}
 \ No newline at end of file
 diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
-index 7abd4f38ae59a6019137345af960fd60a3c7adf0..426777730f77664c69bd0a084a9323d767ebc0ad 100644
+index a9fe3d1c0fc217bd32e884c9e75c906d8b4bf967..dcf8fd8ab06b10ecffae7332bc7e1a941b6a27a1 100644
 --- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
 +++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
 @@ -218,6 +218,15 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
@@ -432,10 +430,10 @@ index 7abd4f38ae59a6019137345af960fd60a3c7adf0..426777730f77664c69bd0a084a9323d7
          io.papermc.paper.brigadier.PaperBrigadierProviderImpl.INSTANCE.getClass(); // init PaperBrigadierProvider
          // Paper end
 diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
-index c7c682cd2d1498e6d6521ddd62acdc1168bfe152..53b9444ff6120628d23ad27fc87d9cd9bdf66648 100644
+index 0ff6764c747ee6258ab9d722b48c24f0ddb2afdf..08f9e5d89a56c50d477437bd8ff15758fc7621cc 100644
 --- a/src/main/java/net/minecraft/world/level/Level.java
 +++ b/src/main/java/net/minecraft/world/level/Level.java
-@@ -167,6 +167,8 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+@@ -166,6 +166,8 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
      // Paper end
  
      public final com.destroystokyo.paper.antixray.ChunkPacketBlockController chunkPacketBlockController; // Paper - Anti-Xray
@@ -444,7 +442,7 @@ index c7c682cd2d1498e6d6521ddd62acdc1168bfe152..53b9444ff6120628d23ad27fc87d9cd9
      public final co.aikar.timings.WorldTimingsHandler timings; // Paper
      public static BlockPos lastPhysicsProblem; // Spigot
      private org.spigotmc.TickLimiter entityLimiter;
-@@ -294,6 +296,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+@@ -233,6 +235,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
      protected Level(WritableLevelData worlddatamutable, ResourceKey<Level> resourcekey, RegistryAccess iregistrycustom, Holder<DimensionType> holder, Supplier<ProfilerFiller> supplier, boolean flag, boolean flag1, long i, int j, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.function.Function<org.spigotmc.SpigotWorldConfig, io.papermc.paper.configuration.WorldConfiguration> paperWorldConfigCreator, java.util.concurrent.Executor executor) { // Paper - Async-Anti-Xray - Pass executor
          this.spigotConfig = new org.spigotmc.SpigotWorldConfig(((net.minecraft.world.level.storage.PrimaryLevelData) worlddatamutable).getLevelName()); // Spigot
          this.paperConfig = paperWorldConfigCreator.apply(this.spigotConfig); // Paper
@@ -453,10 +451,10 @@ index c7c682cd2d1498e6d6521ddd62acdc1168bfe152..53b9444ff6120628d23ad27fc87d9cd9
          this.world = new CraftWorld((ServerLevel) this, gen, biomeProvider, env);
  
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-index b1680507c05547458e1199412ab97105b67f8973..d1468cb0ae1850719d40524dad9b14fbdb0f79a1 100644
+index 66723512de9b9fc92cdeeabb2cf96aa5fad10aaa..86148da7878e8cf832eff299cbb3120a7a385a4f 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-@@ -1067,6 +1067,7 @@ public final class CraftServer implements Server {
+@@ -1080,6 +1080,7 @@ public final class CraftServer implements Server {
  
          org.spigotmc.SpigotConfig.init((File) console.options.valueOf("spigot-settings")); // Spigot
          this.console.paperConfigurations.reloadConfigs(this.console);
@@ -464,7 +462,7 @@ index b1680507c05547458e1199412ab97105b67f8973..d1468cb0ae1850719d40524dad9b14fb
          for (ServerLevel world : this.console.getAllLevels()) {
              // world.serverLevelData.setDifficulty(config.difficulty); // Paper - per level difficulty
              world.setSpawnSettings(world.serverLevelData.getDifficulty() != Difficulty.PEACEFUL && config.spawnMonsters, config.spawnAnimals); // Paper - per level difficulty (from MinecraftServer#setDifficulty(ServerLevel, Difficulty, boolean))
-@@ -1082,6 +1083,7 @@ public final class CraftServer implements Server {
+@@ -1095,6 +1096,7 @@ public final class CraftServer implements Server {
                  }
              }
              world.spigotConfig.init(); // Spigot
@@ -472,7 +470,7 @@ index b1680507c05547458e1199412ab97105b67f8973..d1468cb0ae1850719d40524dad9b14fb
          }
  
          Plugin[] pluginClone = pluginManager.getPlugins().clone(); // Paper
-@@ -1097,6 +1099,7 @@ public final class CraftServer implements Server {
+@@ -1110,6 +1112,7 @@ public final class CraftServer implements Server {
          this.reloadData();
          org.spigotmc.SpigotConfig.registerCommands(); // Spigot
          io.papermc.paper.command.PaperCommands.registerCommands(this.console); // Paper
@@ -480,7 +478,7 @@ index b1680507c05547458e1199412ab97105b67f8973..d1468cb0ae1850719d40524dad9b14fb
          this.overrideAllCommandBlockCommands = this.commandsConfiguration.getStringList("command-block-overrides").contains("*");
          this.ignoreVanillaPermissions = this.commandsConfiguration.getBoolean("ignore-vanilla-permissions");
  
-@@ -2857,6 +2860,13 @@ public final class CraftServer implements Server {
+@@ -2957,6 +2960,13 @@ public final class CraftServer implements Server {
              return CraftServer.this.console.paperConfigurations.createLegacyObject(CraftServer.this.console);
          }
  
@@ -495,7 +493,7 @@ index b1680507c05547458e1199412ab97105b67f8973..d1468cb0ae1850719d40524dad9b14fb
          public void restart() {
              org.spigotmc.RestartCommand.restart();
 diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
-index 4966a1e3dd35357a8ea6a7d2944c84c9c3e9058e..79a004dda72365afddb80fcd730828e351d7cce1 100644
+index e4cacb17f56c618bef19e1165c07aac86af61150..d29fe7ac0c68b2d57a0c6b6d06bbb4436bfc4c14 100644
 --- a/src/main/java/org/bukkit/craftbukkit/Main.java
 +++ b/src/main/java/org/bukkit/craftbukkit/Main.java
 @@ -173,6 +173,14 @@ public class Main {

patches/server/0003-Region-format-configuration.patch

@@ -1,29 +1,30 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Fri, 10 Feb 2023 20:03:58 +0200
-Subject: [PATCH] Kaiiju RegionFormat Configuration
+Subject: [PATCH] Region format configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index 7da7e0aeb5eac9ac73a3570e716f1ceb11fd7027..b86c90cc3601e666998cfa12f44515f605bb53eb 100644
+index 7da7e0aeb5eac9ac73a3570e716f1ceb11fd7027..f08bcc9ae1770fa847d8a5e873a554bef5485100 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -192,4 +192,10 @@ public class KaiijuConfig {
+@@ -192,4 +192,7 @@ public class KaiijuConfig {
          }
          return builder.build();
      }
 +
-+    public static boolean regionFormatDebug = false;
-+
 +    private static void regionFormatSettings() {
-+        regionFormatDebug = getBoolean("region-format.debug", regionFormatDebug);
 +    }
  }
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index dd4c3ca77acb3aeefc69b8eb948b8b202ff87a19..b194f4dbebcbbf5bb4e026a0169e2d24806b46ec 100644
+index 87ca934473f3b9553c1b9b3ed60e0fa07838c711..a6e7af5f4148e067660e9f5beeacde3a59a1de9c 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -4,9 +4,11 @@ import org.apache.commons.lang.BooleanUtils;
+@@ -1,12 +1,15 @@
+ package dev.kaiijumc.kaiiju;
+ 
++import dev.kaiijumc.kaiiju.region.RegionFileFormat;
+ import org.apache.commons.lang.BooleanUtils;
  import org.bukkit.World;
  import org.bukkit.configuration.ConfigurationSection;
  
@@ -35,21 +36,20 @@ index dd4c3ca77acb3aeefc69b8eb948b8b202ff87a19..b194f4dbebcbbf5bb4e026a0169e2d24
  
  import static dev.kaiijumc.kaiiju.KaiijuConfig.log;
  
-@@ -122,4 +124,23 @@ public class KaiijuWorldConfig {
+@@ -122,4 +125,22 @@ public class KaiijuWorldConfig {
          final Map<String, Object> value = getMap("world-settings." + worldName + "." + path, null);
          return value.isEmpty() ? fallback : value;
      }
 +
-+    public List<String> regionFormatList = Arrays.asList("ANVIL", "LINEAR");
++    public RegionFileFormat regionFormatName = RegionFileFormat.ANVIL;
-+    public String regionFormatName = "ANVIL";
 +    public int regionFormatLinearCompressionLevel = 1;
 +
 +    private void regionFormatSettings() {
-+        regionFormatName = getString("region-format.format", regionFormatName).toUpperCase();
++        regionFormatName = RegionFileFormat.fromString(getString("region-format.format", regionFormatName.name()));
-+        if (!regionFormatList.contains(regionFormatName)) {
++        if (regionFormatName.equals(RegionFileFormat.INVALID)) {
 +            log(Level.SEVERE, "Unknown region format in kaiiju.yml: " + regionFormatName);
 +            log(Level.SEVERE, "Falling back to ANVIL region file format.");
-+            regionFormatName = "ANVIL";
++            regionFormatName = RegionFileFormat.ANVIL;
 +        }
 +        regionFormatLinearCompressionLevel = getInt("region-format.linear.compression-level", regionFormatLinearCompressionLevel);
 +        if (regionFormatLinearCompressionLevel > 23 || regionFormatLinearCompressionLevel < 1) {
@@ -59,12 +59,33 @@ index dd4c3ca77acb3aeefc69b8eb948b8b202ff87a19..b194f4dbebcbbf5bb4e026a0169e2d24
 +        }
 +    }
  }
-\ No newline at end of file
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/RegionFileFormat.java b/src/main/java/dev/kaiijumc/kaiiju/region/RegionFileFormat.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..7164d9cd03186f0657783f83de3d6435cda2b17e
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/region/RegionFileFormat.java
+@@ -0,0 +1,16 @@
++package dev.kaiijumc.kaiiju.region;
++
++public enum RegionFileFormat {
++    ANVIL,
++    LINEAR,
++    INVALID;
++
++    public static RegionFileFormat fromString(String format) {
++        for (RegionFileFormat rff : values()) {
++            if (rff.name().equalsIgnoreCase(format)) {
++                return rff;
++            }
++        }
++        return RegionFileFormat.INVALID;
++    }
++}
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index 0696ad97437726fd6a13badfe7db0617dfbfb1ad..a7233bcc99e9bf148348ebb36bbb15b2eadb381f 100644
+index 356f1fd44df5a9cf77655f788650415cadab53e1..84242c7cdbeccda4c9a23e0376daf80ce221e504 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -897,7 +897,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -880,7 +880,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
              // Paper start - rewrite chunk system
              worldserver.save((ProgressListener) null, flush, worldserver.noSave && !force, close);
              if (flush) {
@@ -73,7 +94,7 @@ index 0696ad97437726fd6a13badfe7db0617dfbfb1ad..a7233bcc99e9bf148348ebb36bbb15b2
              }
              // Paper end - rewrite chunk system
          }
-@@ -921,7 +921,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -904,7 +904,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                  //MinecraftServer.LOGGER.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", worldserver2.getChunkSource().chunkMap.getStorageName()); // Paper - move up
              }
  

patches/server/0004-Add-Linear-region-format.patch

@@ -1,15 +1,18 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Fri, 10 Feb 2023 22:21:56 +0200
-Subject: [PATCH] Kaiiju RegionFormat Linear
+Subject: [PATCH] Add Linear region format
 
+Linear is a region file format that uses ZSTD compression instead of
+ZLIB.
+This format saves about 50% of disk space.
 Documentation: https://github.com/xymb-endcrystalme/LinearRegionFileFormatTools
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index 6dd416f65755ca0542e6661b8716672264120d59..4686019a152114e63e997ee103fc8424b24b4581 100644
+index b374c8caf62db3e1325a3cb01bdd890a835541af..7dd84de137e863cfc20582c1451a03ef6e4e495a 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -13,6 +13,10 @@ dependencies {
+@@ -19,6 +19,10 @@ dependencies {
          exclude("io.papermc.paper", "paper-api")
      }
      // Folia end
@@ -35,6 +38,34 @@ index f2c27e0ac65be4b75c1d86ef6fd45fdb538d96ac..00724993d0448454d14a47652b039b88
  
          public static final class InProgressWrite {
              public long writeCounter;
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index f08bcc9ae1770fa847d8a5e873a554bef5485100..b7f43cce80742aa0cd523e930772ff84946f3eef 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -15,7 +15,6 @@ import java.io.IOException;
+ import java.lang.reflect.InvocationTargetException;
+ import java.lang.reflect.Method;
+ import java.lang.reflect.Modifier;
+-import java.util.Arrays;
+ import java.util.HashMap;
+ import java.util.List;
+ import java.util.Map;
+@@ -193,6 +192,15 @@ public class KaiijuConfig {
+         return builder.build();
+     }
+ 
++    public static int linearFlushFrequency = 10;
++    public static int linearFlushThreads = 1;
++
+     private static void regionFormatSettings() {
++        linearFlushFrequency = getInt("region-format.linear.flush-frequency", linearFlushFrequency);
++        linearFlushThreads = getInt("region-format.linear.flush-max-threads", linearFlushThreads);
++        if (linearFlushThreads < 0)
++            linearFlushThreads = Math.max(Runtime.getRuntime().availableProcessors() + linearFlushThreads, 1);
++        else
++            linearFlushThreads = Math.max(linearFlushThreads, 1);
+     }
+ }
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/AbstractRegionFile.java b/src/main/java/dev/kaiijumc/kaiiju/region/AbstractRegionFile.java
 new file mode 100644
 index 0000000000000000000000000000000000000000..249303116d3cfadd078ebf0ae6e44bf99eed6a47
@@ -109,10 +140,10 @@ index 0000000000000000000000000000000000000000..dcfbabf54b19a4c29d5c95830242c5c2
 +}
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696d4cdd0cc
+index 0000000000000000000000000000000000000000..e40989889f3821bb7484fc0bae5d94b033013904
 --- /dev/null
 +++ b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java
-@@ -0,0 +1,336 @@
+@@ -0,0 +1,316 @@
 +package dev.kaiijumc.kaiiju.region;
 +
 +import com.github.luben.zstd.ZstdInputStream;
@@ -133,235 +164,215 @@ index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696
 +import java.nio.file.Path;
 +import java.nio.file.StandardCopyOption;
 +import java.util.ArrayList;
++import java.util.Arrays;
++import java.util.List;
++import java.util.concurrent.atomic.AtomicBoolean;
 +import java.util.concurrent.locks.ReentrantLock;
 +
-+public class LinearRegionFile extends Thread implements AbstractRegionFile {
++public class LinearRegionFile implements AbstractRegionFile, AutoCloseable {
++    private static final long SUPERBLOCK = -4323716122432332390L;
++    private static final byte VERSION = 2;
++    private static final int HEADER_SIZE = 32;
++    private static final int FOOTER_SIZE = 8;
 +    private static final Logger LOGGER = LogUtils.getLogger();
-+    private final byte[][] buffer = new byte[32*32][];
++    private static final List<Byte> SUPPORTED_VERSIONS = Arrays.asList((byte) 1, (byte) 2);
-+    private final int[] bufferUncompressedSize = new int[32*32];
++    private static final LinearRegionFileFlusher linearRegionFileFlusher = new LinearRegionFileFlusher();
 +
-+    private final Object markedToSaveLock = new Object();
++    private final byte[][] buffer = new byte[1024][];
-+    private final ChunkStatus[] statuses = new ChunkStatus[32 * 32];
++    private final int[] bufferUncompressedSize = new int[1024];
 +
-+    private boolean markedToSave = false;
++    private final int[] chunkTimestamps = new int[1024];
-+    private boolean close = false;
++    private final ChunkStatus[] statuses = new ChunkStatus[1024];
++
++    private final LZ4Compressor compressor;
++    private final LZ4FastDecompressor decompressor;
 +
 +    public final ReentrantLock fileLock = new ReentrantLock(true);
-+    public Path regionFile;
-+
 +    private final int compressionLevel;
 +
++    private AtomicBoolean markedToSave = new AtomicBoolean(false);
++    public boolean closed = false;
++    public Path path;
++
++
++    public LinearRegionFile(Path file, int compression) throws IOException {
++        this.path = file;
++        this.compressionLevel = compression;
++        this.compressor = LZ4Factory.fastestInstance().fastCompressor();
++        this.decompressor = LZ4Factory.fastestInstance().fastDecompressor();
++
++        File regionFile = new File(this.path.toString());
++
++        Arrays.fill(this.bufferUncompressedSize, 0);
++
++        if (!regionFile.canRead()) return;
++
++        try (FileInputStream fileStream = new FileInputStream(regionFile);
++             DataInputStream rawDataStream = new DataInputStream(fileStream)) {
++
++            long superBlock = rawDataStream.readLong();
++            if (superBlock != SUPERBLOCK)
++                throw new RuntimeException("Invalid superblock: " + superBlock + " in " + file);
++
++            byte version = rawDataStream.readByte();
++            if (!SUPPORTED_VERSIONS.contains(version))
++                throw new RuntimeException("Invalid version: " + version + " in " + file);
++
++            // Skip newestTimestamp (Long) + Compression level (Byte) + Chunk count (Short): Unused.
++            rawDataStream.skipBytes(11);
++
++            int dataCount = rawDataStream.readInt();
++            long fileLength = file.toFile().length();
++            if (fileLength != HEADER_SIZE + dataCount + FOOTER_SIZE)
++                throw new IOException("Invalid file length: " + this.path + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
++
++            rawDataStream.skipBytes(8); // Skip data hash (Long): Unused.
++
++            byte[] rawCompressed = new byte[dataCount];
++            rawDataStream.readFully(rawCompressed, 0, dataCount);
++
++            superBlock = rawDataStream.readLong();
++            if (superBlock != SUPERBLOCK)
++                throw new IOException("Footer superblock invalid " + this.path);
++
++            try (DataInputStream dataStream = new DataInputStream(new ZstdInputStream(new ByteArrayInputStream(rawCompressed)))) {
++
++                int[] starts = new int[1024];
++                for (int i = 0; i < 1024; i++) {
++                    starts[i] = dataStream.readInt();
++                    dataStream.skipBytes(4); // Skip timestamps (Int): Unused.
++                }
++
++                for (int i = 0; i < 1024; i++) {
++                    if (starts[i] > 0) {
++                        int size = starts[i];
++                        byte[] b = new byte[size];
++                        dataStream.readFully(b, 0, size);
++
++                        int maxCompressedLength = this.compressor.maxCompressedLength(size);
++                        byte[] compressed = new byte[maxCompressedLength];
++                        int compressedLength = this.compressor.compress(b, 0, size, compressed, 0, maxCompressedLength);
++                        b = new byte[compressedLength];
++                        System.arraycopy(compressed, 0, b, 0, compressedLength);
++
++                        this.buffer[i] = b;
++                        this.bufferUncompressedSize[i] = size;
++                    }
++                }
++            }
++        }
++    }
++
 +    public Path getRegionFile() {
-+        return this.regionFile;
++        return this.path;
 +    }
 +
 +    public ReentrantLock getFileLock() {
 +        return this.fileLock;
 +    }
 +
-+    public LinearRegionFile(Path file, int compression) throws IOException {
++    public void flush() throws IOException {
-+        this.regionFile = file;
++        if (isMarkedToSave()) flushWrapper(); // sync
-+        this.compressionLevel = compression;
-+        File regionFile = new File(this.regionFile.toString());
-+
-+        LZ4Compressor compressor = LZ4Factory.fastestInstance().fastCompressor();
-+
-+        for (int i = 0; i < 32 * 32; i++)
-+            this.bufferUncompressedSize[i] = 0;
-+
-+        if(regionFile.canRead()) {
-+            long fileLength = file.toFile().length();
-+            FileInputStream fileStream = new FileInputStream(regionFile);
-+            DataInputStream rawDataStream = new DataInputStream(fileStream);
-+
-+            long SUPERBLOCK = -4323716122432332390L;
-+            byte VERSION = 1;
-+            int HEADER_SIZE = 32;
-+            int FOOTER_SIZE = 8;
-+
-+            long superBlock = rawDataStream.readLong();
-+
-+            if (superBlock != SUPERBLOCK)
-+                throw new RuntimeException("Superblock invalid: " + superBlock + " file " + file);
-+
-+            byte version = rawDataStream.readByte();
-+
-+            if (version != VERSION)
-+                throw new RuntimeException("Version invalid: " + version + " file " + file);
-+
-+            rawDataStream.readLong(); // newestTimestamp
-+            rawDataStream.readByte(); // Compression level
-+            rawDataStream.readShort(); // Chunk count
-+            int dataCount = rawDataStream.readInt();
-+
-+            if (fileLength != HEADER_SIZE + dataCount + FOOTER_SIZE)
-+                throw new IOException("File length invalid " + this.regionFile + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
-+
-+            rawDataStream.readLong(); // Data Hash
-+            byte[] rawCompressed = new byte[dataCount];
-+
-+            rawDataStream.readFully(rawCompressed, 0, dataCount);
-+
-+            superBlock = rawDataStream.readLong();
-+
-+            if (superBlock != SUPERBLOCK) {
-+                throw new IOException("Footer superblock invalid " + this.regionFile);
-+            }
-+
-+            DataInputStream dataStream = new DataInputStream(new ZstdInputStream(new ByteArrayInputStream(rawCompressed)));
-+
-+            int[] starts = new int[32 * 32];
-+            for(int i = 0 ; i < 32 * 32 ; i++) {
-+                starts[i] = dataStream.readInt();
-+                dataStream.readInt(); // Skip timestamps
-+            }
-+
-+            for(int i = 0 ; i < 32 * 32 ; i++) {
-+                if(starts[i] > 0) {
-+                    int size = starts[i];
-+                    byte[] b = new byte[size];
-+                    dataStream.readFully(b, 0, size);
-+
-+                    int maxCompressedLength = compressor.maxCompressedLength(size);
-+                    byte[] compressed = new byte[maxCompressedLength];
-+                    int compressedLength = compressor.compress(b, 0, size, compressed, 0, maxCompressedLength);
-+                    b = new byte[compressedLength];
-+                    System.arraycopy(compressed, 0, b, 0, compressedLength);
-+
-+                    this.buffer[i] = b;
-+                    this.bufferUncompressedSize[i] = size;
-+                }
-+            }
-+        }
-+        this.start();
 +    }
 +
-+    private synchronized void markToSave() {
++    private void markToSave() {
-+        synchronized(markedToSaveLock) {
++        linearRegionFileFlusher.scheduleSave(this);
-+            markedToSave = true;
++        markedToSave.set(true);
-+        }
 +    }
 +
-+    private synchronized boolean isMarkedToSave() {
++    public boolean isMarkedToSave() {
-+        synchronized(markedToSaveLock) {
++        return markedToSave.getAndSet(false);
-+            if(markedToSave) {
-+                markedToSave = false;
-+                return true;
-+            }
-+            return false;
-+        }
 +    }
 +
-+    public void run() {
++    public void flushWrapper() {
 +        try {
-+            while(true) {
++            save();
-+                if(markedToSave) {
++        } catch (IOException e) {
-+                    try {
++            LOGGER.error("Failed to flush region file " + path.toAbsolutePath(), e);
-+                        flush();
++        }
-+                    } catch(IOException ex) {
-+                        LOGGER.error("Region file " + this.regionFile.toAbsolutePath() + " flush failed");
-+                    }
-+                }
-+                for(int i = 0 ; i < 100 ; i++) {
-+                    Thread.sleep(100);
-+                    if(close) {
-+                        return;
-+                    }
-+                }
-+            }
-+        } catch(InterruptedException ignored) {}
 +    }
 +
-+    public synchronized boolean doesChunkExist(ChunkPos pos) throws Exception {
++    public boolean doesChunkExist(ChunkPos pos) throws Exception {
 +        throw new Exception("doesChunkExist is a stub");
 +    }
 +
-+    public synchronized void flush() throws IOException {
++    private synchronized void save() throws IOException {
-+        if(!isMarkedToSave())
++        long timestamp = getTimestamp();
-+            return;
-+
-+        long SUPERBLOCK = -4323716122432332390L;
-+        byte VERSION = 1;
-+        long timestamp = System.currentTimeMillis() / 1000L;
 +        short chunkCount = 0;
 +
-+        File tempFile = new File(regionFile.toString() + ".tmp");
++        File tempFile = new File(path.toString() + ".tmp");
-+        FileOutputStream fileStream = new FileOutputStream(tempFile);
 +
-+        ByteArrayOutputStream zstdByteArray = new ByteArrayOutputStream();
++        try (FileOutputStream fileStream = new FileOutputStream(tempFile);
-+        ZstdOutputStream zstdStream = new ZstdOutputStream(zstdByteArray, this.compressionLevel);
++             ByteArrayOutputStream zstdByteArray = new ByteArrayOutputStream();
-+        zstdStream.setChecksum(true);
++             ZstdOutputStream zstdStream = new ZstdOutputStream(zstdByteArray, this.compressionLevel);
-+        DataOutputStream zstdDataStream = new DataOutputStream(zstdStream);
++             DataOutputStream zstdDataStream = new DataOutputStream(zstdStream);
-+        DataOutputStream dataStream = new DataOutputStream(fileStream);
++             DataOutputStream dataStream = new DataOutputStream(fileStream)) {
 +
-+        dataStream.writeLong(SUPERBLOCK);
++            dataStream.writeLong(SUPERBLOCK);
-+        dataStream.writeByte(VERSION);
++            dataStream.writeByte(VERSION);
-+        dataStream.writeLong(timestamp);
++            dataStream.writeLong(timestamp);
-+        dataStream.writeByte(this.compressionLevel);
++            dataStream.writeByte(this.compressionLevel);
 +
-+        LZ4FastDecompressor decompressor = LZ4Factory.fastestInstance().fastDecompressor();
++            ArrayList<byte[]> byteBuffers = new ArrayList<>();
++            for (int i = 0; i < 1024; i++) {
++                if (this.bufferUncompressedSize[i] != 0) {
++                    chunkCount += 1;
++                    byte[] content = new byte[bufferUncompressedSize[i]];
++                    this.decompressor.decompress(buffer[i], 0, content, 0, bufferUncompressedSize[i]);
 +
-+        ArrayList<byte[]> byteBuffers = new ArrayList<>();
++                    byteBuffers.add(content);
-+        for(int i = 0 ; i < 32 * 32 ; i++) {
++                } else byteBuffers.add(null);
-+            if(this.bufferUncompressedSize[i] != 0) {
++            }
-+                chunkCount += 1;
++            for (int i = 0; i < 1024; i++) {
-+                byte[] content = new byte[bufferUncompressedSize[i]];
++                zstdDataStream.writeInt(this.bufferUncompressedSize[i]); // Write uncompressed size
-+                decompressor.decompress(buffer[i], 0, content, 0, bufferUncompressedSize[i]);
++                zstdDataStream.writeInt(this.chunkTimestamps[i]); // Write timestamp
++            }
++            for (int i = 0; i < 1024; i++) {
++                if (byteBuffers.get(i) != null)
++                    zstdDataStream.write(byteBuffers.get(i), 0, byteBuffers.get(i).length);
++            }
++            zstdDataStream.close();
 +
-+                byteBuffers.add(content);
++            dataStream.writeShort(chunkCount);
-+            } else byteBuffers.add(null);
++
++            byte[] compressed = zstdByteArray.toByteArray();
++
++            dataStream.writeInt(compressed.length);
++            dataStream.writeLong(0);
++
++            dataStream.write(compressed, 0, compressed.length);
++            dataStream.writeLong(SUPERBLOCK);
++
++            dataStream.flush();
++            fileStream.getFD().sync();
++            fileStream.getChannel().force(true); // Ensure atomicity on Btrfs
 +        }
-+        for(int i = 0 ; i < 32 * 32 ; i++) {
++        Files.move(tempFile.toPath(), this.path, StandardCopyOption.REPLACE_EXISTING);
-+            zstdDataStream.writeInt(this.bufferUncompressedSize[i]);
-+            zstdDataStream.writeInt(0);
-+        }
-+        for(int i = 0 ; i < 32 * 32 ; i++) {
-+            if(byteBuffers.get(i) != null)
-+                zstdDataStream.write(byteBuffers.get(i), 0, byteBuffers.get(i).length);
-+        }
-+        zstdDataStream.close();
-+
-+        dataStream.writeShort(chunkCount);
-+
-+        byte[] compressed = zstdByteArray.toByteArray();
-+
-+        dataStream.writeInt(compressed.length);
-+        dataStream.writeLong(0);
-+
-+        dataStream.write(compressed, 0, compressed.length);
-+        dataStream.writeLong(SUPERBLOCK);
-+
-+        dataStream.flush();
-+        fileStream.getFD().sync();
-+        fileStream.getChannel().force(true); // Ensure atomicity on Btrfs
-+        dataStream.close();
-+
-+        fileStream.close();
-+        Files.move(tempFile.toPath(), this.regionFile, StandardCopyOption.REPLACE_EXISTING);
 +    }
 +
++
 +    public void setStatus(int x, int z, ChunkStatus status) {
 +        this.statuses[getChunkIndex(x, z)] = status;
 +    }
 +
 +    public synchronized void write(ChunkPos pos, ByteBuffer buffer) {
-+        LZ4Compressor compressor = LZ4Factory.fastestInstance().fastCompressor();
 +        try {
 +            byte[] b = toByteArray(new ByteArrayInputStream(buffer.array()));
 +            int uncompressedSize = b.length;
 +
-+            int maxCompressedLength = compressor.maxCompressedLength(b.length);
++            int maxCompressedLength = this.compressor.maxCompressedLength(b.length);
 +            byte[] compressed = new byte[maxCompressedLength];
-+            int compressedLength = compressor.compress(b, 0, b.length, compressed, 0, maxCompressedLength);
++            int compressedLength = this.compressor.compress(b, 0, b.length, compressed, 0, maxCompressedLength);
 +            b = new byte[compressedLength];
 +            System.arraycopy(compressed, 0, b, 0, compressedLength);
 +
-+            this.buffer[getChunkIndex(pos.x, pos.z)] = b;
++            int index = getChunkIndex(pos.x, pos.z);
++            this.buffer[index] = b;
++            this.chunkTimestamps[index] = getTimestamp();
 +            this.bufferUncompressedSize[getChunkIndex(pos.x, pos.z)] = uncompressedSize;
 +        } catch (IOException e) {
-+            LOGGER.error("Chunk write IOException " + e + " " + this.regionFile);
++            LOGGER.error("Chunk write IOException " + e + " " + this.path);
 +        }
-+
 +        markToSave();
 +    }
 +
@@ -370,7 +381,6 @@ index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696
 +    }
 +
 +    private class ChunkBuffer extends ByteArrayOutputStream {
-+
 +        private final ChunkPos pos;
 +
 +        public ChunkBuffer(ChunkPos chunkcoordintpair) {
@@ -399,9 +409,8 @@ index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696
 +    @Nullable
 +    public synchronized DataInputStream getChunkDataInputStream(ChunkPos pos) {
 +        if(this.bufferUncompressedSize[getChunkIndex(pos.x, pos.z)] != 0) {
-+            LZ4FastDecompressor decompressor = LZ4Factory.fastestInstance().fastDecompressor();
 +            byte[] content = new byte[bufferUncompressedSize[getChunkIndex(pos.x, pos.z)]];
-+            decompressor.decompress(this.buffer[getChunkIndex(pos.x, pos.z)], 0, content, 0, bufferUncompressedSize[getChunkIndex(pos.x, pos.z)]);
++            this.decompressor.decompress(this.buffer[getChunkIndex(pos.x, pos.z)], 0, content, 0, bufferUncompressedSize[getChunkIndex(pos.x, pos.z)]);
 +            return new DataInputStream(new ByteArrayInputStream(content));
 +        }
 +        return null;
@@ -415,6 +424,7 @@ index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696
 +        int i = getChunkIndex(pos.x, pos.z);
 +        this.buffer[i] = null;
 +        this.bufferUncompressedSize[i] = 0;
++        this.chunkTimestamps[i] = getTimestamp();
 +        markToSave();
 +    }
 +
@@ -423,16 +433,17 @@ index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696
 +    }
 +
 +    public void close() throws IOException {
-+        close = true;
++        if (closed) return;
-+        try {
++        closed = true;
-+            flush();
++        flush(); // sync
-+        } catch(IOException e) {
-+            throw new IOException("Region flush IOException " + e + " " + this.regionFile);
-+        }
 +    }
 +
 +    private static int getChunkIndex(int x, int z) {
-+        return (x & 31) + (z & 31) * 32;
++        return (x & 31) + ((z & 31) << 5);
++    }
++
++    private static int getTimestamp() {
++        return (int) (System.currentTimeMillis() / 1000L);
 +    }
 +
 +    public boolean recalculateHeader() {
@@ -442,13 +453,64 @@ index 0000000000000000000000000000000000000000..32213e1f2432a2ee0c27331e83a04696
 +    public void setOversized(int x, int z, boolean something) {}
 +
 +    public CompoundTag getOversizedData(int x, int z) throws IOException {
-+        throw new IOException("getOversizedData is a stub " + this.regionFile);
++        throw new IOException("getOversizedData is a stub " + this.path);
 +    }
 +
 +    public boolean isOversized(int x, int z) {
 +        return false;
 +    }
 +}
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFileFlusher.java b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFileFlusher.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..a5731e37aa63004476dd6db67191d5be6ce480be
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFileFlusher.java
+@@ -0,0 +1,45 @@
++package dev.kaiijumc.kaiiju.region;
++
++import com.google.common.util.concurrent.ThreadFactoryBuilder;
++import java.util.Queue;
++import java.util.concurrent.*;
++import dev.kaiijumc.kaiiju.KaiijuConfig;
++import org.bukkit.Bukkit;
++
++public class LinearRegionFileFlusher {
++    private final Queue<LinearRegionFile> savingQueue = new LinkedBlockingQueue<>();
++    private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(
++        new ThreadFactoryBuilder()
++            .setNameFormat("linear-flush-scheduler")
++            .build()
++    );
++    private final ExecutorService executor = Executors.newFixedThreadPool(
++        KaiijuConfig.linearFlushThreads,
++        new ThreadFactoryBuilder()
++            .setNameFormat("linear-flusher-%d")
++            .build()
++    );
++
++    public LinearRegionFileFlusher() {
++        Bukkit.getLogger().info("Using " + KaiijuConfig.linearFlushThreads + " threads for linear region flushing.");
++        scheduler.scheduleAtFixedRate(this::pollAndFlush, 0L, KaiijuConfig.linearFlushFrequency, TimeUnit.SECONDS);
++    }
++
++    public void scheduleSave(LinearRegionFile regionFile) {
++        if (savingQueue.contains(regionFile)) return;
++        savingQueue.add(regionFile);
++    }
++
++    private void pollAndFlush() {
++        while (!savingQueue.isEmpty()) {
++            LinearRegionFile regionFile = savingQueue.poll();
++            if (!regionFile.closed && regionFile.isMarkedToSave())
++                executor.execute(regionFile::flushWrapper);
++        }
++    }
++
++    public void shutdown() {
++        executor.shutdown();
++        scheduler.shutdown();
++    }
++}
 diff --git a/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java b/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
 index 8a11e10b01fa012b2f98b1c193c53251e848f909..61001e76b38f8647b33e73b5cc15b4b6785cf49a 100644
 --- a/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
@@ -517,16 +579,15 @@ index 8a11e10b01fa012b2f98b1c193c53251e848f909..61001e76b38f8647b33e73b5cc15b4b6
              }
          }
 diff --git a/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java b/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
-index 513833c2ea23df5b079d157bc5cb89d5c9754c0b..a62a1b281bd0b6ad7d59b45b9470d84f496f6539 100644
+index 513833c2ea23df5b079d157bc5cb89d5c9754c0b..abf5e2a06af9853b58ac9107cd6e9787c4185c66 100644
 --- a/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
 +++ b/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
-@@ -83,9 +83,13 @@ public class ThreadedWorldUpgrader {
+@@ -84,8 +84,13 @@ public class ThreadedWorldUpgrader {
-         }
          LOGGER.info("Found " + regionFiles.length + " regionfiles to convert");
          LOGGER.info("Starting conversion now for world " + this.worldName);
--
+ 
 +        // Kaiiju start
-+        String formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
++        dev.kaiijumc.kaiiju.region.RegionFileFormat formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
 +        int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatLinearCompressionLevel;
 +        LOGGER.info("Using format " + formatName + " (" + linearCompression + ")");
 +        // Kaiiju end
@@ -537,11 +598,11 @@ index 513833c2ea23df5b079d157bc5cb89d5c9754c0b..a62a1b281bd0b6ad7d59b45b9470d84f
          long expectedChunks = (long)regionFiles.length * (32L * 32L);
  
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 6f12d91f73e04c25fb0bc9054dc7d49de16e614a..43503974433c4d1808b2acb2b79f46d640725dc0 100644
+index 0f7e53dbac964391763bf6b380e65ce955a8a7a5..5868be332437cfa2cf21d48c02ba0bb73255b365 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -272,7 +272,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -210,7 +210,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
-     // Paper end
+     // Paper end - optimise chunk tick iteration
  
      public ChunkMap(ServerLevel world, LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, StructureTemplateManager structureTemplateManager, Executor executor, BlockableEventLoop<Runnable> mainThreadExecutor, LightChunkGetter chunkProvider, ChunkGenerator chunkGenerator, ChunkProgressListener worldGenerationProgressListener, ChunkStatusUpdateListener chunkStatusChangeListener, Supplier<DimensionDataStorage> persistentStateManagerFactory, int viewDistance, boolean dsync) {
 -        super(session.getDimensionPath(world.dimension()).resolve("region"), dataFixer, dsync);
@@ -549,16 +610,16 @@ index 6f12d91f73e04c25fb0bc9054dc7d49de16e614a..43503974433c4d1808b2acb2b79f46d6
          // Paper - rewrite chunk system
          this.tickingGenerated = new AtomicInteger();
          //this.playerMap = new PlayerMap(); // Folia - region threading
-@@ -317,7 +317,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -255,7 +255,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          this.lightEngine = new ThreadedLevelLightEngine(chunkProvider, this, this.level.dimensionType().hasSkyLight(), null, null); // Paper - rewrite chunk system
          this.distanceManager = new ChunkMap.ChunkDistanceManager(executor, mainThreadExecutor);
          this.overworldDataStorage = persistentStateManagerFactory;
 -        this.poiManager = new PoiManager(path.resolve("poi"), dataFixer, dsync, iregistrycustom, world);
 +        this.poiManager = new PoiManager(this.level.kaiijuConfig.regionFormatName, this.level.kaiijuConfig.regionFormatLinearCompressionLevel, path.resolve("poi"), dataFixer, dsync, iregistrycustom, world); // Kaiiju
-         this.setViewDistance(viewDistance);
+         this.setServerViewDistance(viewDistance);
          // Paper start
          this.dataRegionManager = new io.papermc.paper.chunk.SingleThreadChunkRegionManager(this.level, 2, (1.0 / 3.0), 1, 6, "Data", DataRegionData::new, DataRegionSectionData::new);
-@@ -849,13 +849,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -818,13 +818,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
      // Paper start - chunk status cache "api"
      public ChunkStatus getChunkStatusOnDiskIfCached(ChunkPos chunkPos) {
@@ -574,7 +635,7 @@ index 6f12d91f73e04c25fb0bc9054dc7d49de16e614a..43503974433c4d1808b2acb2b79f46d6
  
          if (regionFile == null || !regionFileCache.chunkExists(chunkPos)) {
              return null;
-@@ -873,7 +873,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -842,7 +842,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
      }
  
      public void updateChunkStatusOnDisk(ChunkPos chunkPos, @Nullable CompoundTag compound) throws IOException {
@@ -584,22 +645,21 @@ index 6f12d91f73e04c25fb0bc9054dc7d49de16e614a..43503974433c4d1808b2acb2b79f46d6
          regionFile.setStatus(chunkPos.x, chunkPos.z, ChunkSerializer.getStatus(compound));
      }
 diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
-index acc8af33ad8534d812908b0feb9a1963ee2c64fb..20359c63b19c7e0c703ef1562fb774803d631c41 100644
+index 02937e40d429f42643f77b17c04277be535dc434..3e2c14b9acc9e5bec70055646387b51f0be43105 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -425,9 +425,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -451,8 +451,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
-     private final EntityRegionFileStorage entityStorage;
  
      private static final class EntityRegionFileStorage extends net.minecraft.world.level.chunk.storage.RegionFileStorage {
--
+ 
 -        public EntityRegionFileStorage(Path directory, boolean dsync) {
 -            super(directory, dsync);
-+        public EntityRegionFileStorage(String format, int linearCompression, Path directory, boolean dsync) { // Kaiiju
++        public EntityRegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync) { // Kaiiju
 +            super(format, linearCompression, directory, dsync); // Kaiiju
          }
  
          protected void write(ChunkPos pos, net.minecraft.nbt.CompoundTag nbt) throws IOException {
-@@ -633,7 +632,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -808,7 +808,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
          // CraftBukkit end
          boolean flag2 = minecraftserver.forceSynchronousWrites();
          DataFixer datafixer = minecraftserver.getFixerUpper();
@@ -609,35 +669,34 @@ index acc8af33ad8534d812908b0feb9a1963ee2c64fb..20359c63b19c7e0c703ef1562fb77480
          // this.entityManager = new PersistentEntitySectionManager<>(Entity.class, new ServerLevel.EntityCallbacks(), entitypersistentstorage, this.entitySliceManager); // Paper // Paper - rewrite chunk system
          StructureTemplateManager structuretemplatemanager = minecraftserver.getStructureManager();
 diff --git a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
-index e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..469802b9c454c5e98c0a55ba89559d9d8ba0c4c0 100644
+index e16ef1b7c0bfe6d6194c09f6787a50fd9b28f55e..3b02b7905fd16be28ba986302c1f99dfb5eb2ab8 100644
 --- a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
 +++ b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
 @@ -61,7 +61,7 @@ public class WorldUpgrader {
      private volatile int skipped;
-     private final Object2FloatMap<ResourceKey<LevelStem>> progressMap = Object2FloatMaps.synchronize(new Object2FloatOpenCustomHashMap(Util.identityStrategy())); // CraftBukkit
+     private final Object2FloatMap<ResourceKey<Level>> progressMap = Object2FloatMaps.synchronize(new Object2FloatOpenCustomHashMap(Util.identityStrategy()));
      private volatile Component status = Component.translatable("optimizeWorld.stage.counting");
 -    public static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.mca$");
 +    public static Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.(linear | mca)$"); // Kaiiju
      private final DimensionDataStorage overworldDataStorage;
  
      public WorldUpgrader(LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, Registry<LevelStem> dimensionOptionsRegistry, boolean eraseCache) {
-@@ -115,8 +115,12 @@ public class WorldUpgrader {
+@@ -116,7 +116,12 @@ public class WorldUpgrader {
-             while (iterator1.hasNext()) {
+                 ResourceKey<Level> resourcekey1 = (ResourceKey) iterator1.next();
-                 ResourceKey<LevelStem> resourcekey1 = (ResourceKey) iterator1.next(); // CraftBukkit
+                 Path path = this.levelStorage.getDimensionPath(resourcekey1);
-                 Path path = this.levelStorage.getDimensionPath((ResourceKey) null); // CraftBukkit
+ 
--
 -                builder1.put(resourcekey1, new ChunkStorage(path.resolve("region"), this.dataFixer, true));
 +                // Kaiiju start
 +                String worldName = this.levelStorage.getLevelId();
-+                String formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
++                dev.kaiijumc.kaiiju.region.RegionFileFormat formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
 +                int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatLinearCompressionLevel;
 +                builder1.put(resourcekey1, new ChunkStorage(formatName, linearCompression, path.resolve("region"), this.dataFixer, true));
 +                // Kaiiju end
              }
  
-             ImmutableMap<ResourceKey<LevelStem>, ChunkStorage> immutablemap1 = builder1.build(); // CraftBukkit
+             ImmutableMap<ResourceKey<Level>, ChunkStorage> immutablemap1 = builder1.build();
-@@ -235,7 +239,7 @@ public class WorldUpgrader {
+@@ -235,7 +240,7 @@ public class WorldUpgrader {
-         File file = this.levelStorage.getDimensionPath((ResourceKey) null).toFile(); // CraftBukkit
+         File file = this.levelStorage.getDimensionPath(world).toFile();
          File file1 = new File(file, "region");
          File[] afile = file1.listFiles((file2, s) -> {
 -            return s.endsWith(".mca");
@@ -645,7 +704,7 @@ index e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..469802b9c454c5e98c0a55ba89559d9d
          });
  
          if (afile == null) {
-@@ -254,7 +258,11 @@ public class WorldUpgrader {
+@@ -254,7 +259,11 @@ public class WorldUpgrader {
                      int l = Integer.parseInt(matcher.group(2)) << 5;
  
                      try {
@@ -659,7 +718,7 @@ index e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..469802b9c454c5e98c0a55ba89559d9d
                          try {
                              for (int i1 = 0; i1 < 32; ++i1) {
 diff --git a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
-index 9c56304476b4fc841b5d7694232617586ebd8e84..f560aa13c6c8ffecb456f478687dc6a9eb5e8017 100644
+index 5150d447c9dc2f539446749c8bee102050bab4ed..187ff795192c7eb56dffafa1ff6fa3068ac341c3 100644
 --- a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
 +++ b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
 @@ -59,8 +59,8 @@ public class PoiManager extends SectionStorage<PoiSection> {
@@ -668,23 +727,22 @@ index 9c56304476b4fc841b5d7694232617586ebd8e84..f560aa13c6c8ffecb456f478687dc6a9
  
 -    public PoiManager(Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) {
 -        super(path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, registryManager, world);
-+    public PoiManager(String formatName, int linearCompression, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // Kaiiju
++    public PoiManager(dev.kaiijumc.kaiiju.region.RegionFileFormat formatName, int linearCompression, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // Kaiiju
 +        super(formatName, linearCompression, path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, registryManager, world); // Kaiiju
          this.world = (net.minecraft.server.level.ServerLevel)world; // Paper - rewrite chunk system
      }
  
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
-index 29facbdcbad17ce38bf785f7f3f8346d81cbc32f..52c2e0fe73a5af18535a2b0b9a506919e3f93003 100644
+index 8ebecb588058da174b0e0e19e54fcddfeeca1422..1d880f27dd147da683fc30ed6f1bfa43ecdb7d93 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
-@@ -37,11 +37,12 @@ public class ChunkStorage implements AutoCloseable {
+@@ -37,11 +37,11 @@ public class ChunkStorage implements AutoCloseable {
      public final RegionFileStorage regionFileCache;
      // Paper end - async chunk loading
  
 -    public ChunkStorage(Path directory, DataFixer dataFixer, boolean dsync) {
-+    public ChunkStorage(String format, int linearCompression, Path directory, DataFixer dataFixer, boolean dsync) { // Kaiiju
++    public ChunkStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, DataFixer dataFixer, boolean dsync) { // Kaiiju
          this.fixerUpper = dataFixer;
-+
          // Paper start - async chunk io
          // remove IO worker
 -        this.regionFileCache = new RegionFileStorage(directory, dsync, true); // Paper - nuke IOWorker // Paper
@@ -693,10 +751,10 @@ index 29facbdcbad17ce38bf785f7f3f8346d81cbc32f..52c2e0fe73a5af18535a2b0b9a506919
      }
  
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
-index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788ecafb8e9d 100644
+index 9248769e6d357f6eec68945fd7700e79b2942c41..024870a31469c40cd680be0399ce0e0e73839a0f 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
-@@ -27,7 +27,7 @@ import net.minecraft.nbt.NbtIo;
+@@ -26,7 +26,7 @@ import net.minecraft.nbt.NbtIo; // Paper
  import net.minecraft.world.level.ChunkPos;
  import org.slf4j.Logger;
  
@@ -705,8 +763,8 @@ index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788e
  
      private static final Logger LOGGER = LogUtils.getLogger();
      private static final int SECTOR_BYTES = 4096;
-@@ -51,6 +51,16 @@ public class RegionFile implements AutoCloseable {
+@@ -50,6 +50,16 @@ public class RegionFile implements AutoCloseable {
-     public final java.util.concurrent.locks.ReentrantLock fileLock = new java.util.concurrent.locks.ReentrantLock(true); // Paper
+     public final java.util.concurrent.locks.ReentrantLock fileLock = new java.util.concurrent.locks.ReentrantLock(); // Paper
      public final Path regionFile; // Paper
  
 +    // Kaiiju start - Abstract getters
@@ -722,7 +780,7 @@ index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788e
      // Paper start - try to recover from RegionFile header corruption
      private static long roundToSectors(long bytes) {
          long sectors = bytes >>> 12; // 4096 = 2^12
-@@ -129,7 +139,7 @@ public class RegionFile implements AutoCloseable {
+@@ -128,7 +138,7 @@ public class RegionFile implements AutoCloseable {
      }
  
      // note: only call for CHUNK regionfiles
@@ -731,7 +789,7 @@ index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788e
          if (!this.canRecalcHeader) {
              return false;
          }
-@@ -955,10 +965,10 @@ public class RegionFile implements AutoCloseable {
+@@ -954,10 +964,10 @@ public class RegionFile implements AutoCloseable {
      private static int getChunkIndex(int x, int z) {
          return (x & 31) + (z & 31) * 32;
      }
@@ -744,7 +802,7 @@ index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788e
          final int offset = getChunkIndex(x, z);
          boolean previous = this.oversized[offset] == 1;
          this.oversized[offset] = (byte) (oversized ? 1 : 0);
-@@ -997,7 +1007,7 @@ public class RegionFile implements AutoCloseable {
+@@ -996,7 +1006,7 @@ public class RegionFile implements AutoCloseable {
          return this.regionFile.getParent().resolve(this.regionFile.getFileName().toString().replaceAll("\\.mca$", "") + "_oversized_" + x + "_" + z + ".nbt");
      }
  
@@ -754,10 +812,10 @@ index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788e
          try (DataInputStream out = new DataInputStream(new java.io.BufferedInputStream(new InflaterInputStream(Files.newInputStream(file))))) {
              return NbtIo.read((java.io.DataInput) out);
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
-index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d01a6381c 100644
+index db571f658f636cdda1dcdbaffa0c4da67fae11ad..21537b14c6c6789da3db04577f1c93998397678d 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
-@@ -22,9 +22,13 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -21,9 +21,13 @@ public class RegionFileStorage implements AutoCloseable {
  
      public static final String ANVIL_EXTENSION = ".mca";
      private static final int MAX_CACHE_SIZE = 256;
@@ -766,24 +824,24 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
      private final Path folder;
      private final boolean sync;
 +    // Kaiiju start - Per world chunk format
-+    public final String format;
++    public final dev.kaiijumc.kaiiju.region.RegionFileFormat format;
 +    public final int linearCompression;
 +    // Kaiiju end
- 
      private final boolean isChunkData; // Paper
  
-@@ -57,11 +61,15 @@ public class RegionFileStorage implements AutoCloseable {
+     // Paper start - cache regionfile does not exist state
+@@ -55,11 +59,15 @@ public class RegionFileStorage implements AutoCloseable {
      }
      // Paper end - cache regionfile does not exist state
  
 -    protected RegionFileStorage(Path directory, boolean dsync) { // Paper - protected constructor
-+    protected RegionFileStorage(String format, int linearCompression, Path directory, boolean dsync) { // Paper - protected constructor
++    protected RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync) { // Paper - protected constructor
          // Paper start - add isChunkData param
 -        this(directory, dsync, false);
 +        this(format, linearCompression, directory, dsync, false);
      }
 -    RegionFileStorage(Path directory, boolean dsync, boolean isChunkData) {
-+    RegionFileStorage(String format, int linearCompression, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
++    RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
 +        // Kaiiju start
 +        this.format = format;
 +        this.linearCompression = linearCompression;
@@ -791,19 +849,19 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          this.isChunkData = isChunkData;
          // Paper end - add isChunkData param
          this.folder = directory;
-@@ -71,7 +79,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -70,7 +78,7 @@ public class RegionFileStorage implements AutoCloseable {
-     // Paper start
+     @Nullable
-     public static @Nullable ChunkPos getRegionFileCoordinates(Path file) {
+     public static ChunkPos getRegionFileCoordinates(Path file) {
          String fileName = file.getFileName().toString();
 -        if (!fileName.startsWith("r.") || !fileName.endsWith(".mca")) {
 +        if (!fileName.startsWith("r.") || !fileName.endsWith(".mca") || !fileName.endsWith(".linear")) { // Kaiiju
              return null;
          }
  
-@@ -91,29 +99,29 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -90,29 +98,29 @@ public class RegionFileStorage implements AutoCloseable {
          }
      }
- 
+     
 -    public synchronized RegionFile getRegionFileIfLoaded(ChunkPos chunkcoordintpair) {
 +    public synchronized dev.kaiijumc.kaiiju.region.AbstractRegionFile getRegionFileIfLoaded(ChunkPos chunkcoordintpair) { // Kaiiju
          return this.regionCache.getAndMoveToFirst(ChunkPos.asLong(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ()));
@@ -836,7 +894,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              }
              // Paper end
              return regionfile;
-@@ -124,28 +132,46 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -123,28 +131,45 @@ public class RegionFileStorage implements AutoCloseable {
              }
              // Paper end - cache regionfile does not exist state
              if (this.regionCache.size() >= io.papermc.paper.configuration.GlobalConfiguration.get().misc.regionFileCacheSize) { // Paper - configurable
@@ -863,22 +921,21 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
 +                    this.markNonExisting(regionPos);
 +                    return null;
 +                }
++            // Kaiiju end
              } else {
++                // Kaiiju start - Polyglot
 +                String extension = switch (this.format) {
-+                    case "LINEAR" -> "linear";
++                    case LINEAR -> "linear";
 +                    default -> "mca";
 +                };
 +                path1 = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + "." + extension);
++                // Kaiiju end
                  this.createRegionFile(regionPos);
              }
-+            if (dev.kaiijumc.kaiiju.KaiijuConfig.regionFormatDebug)
-+                org.bukkit.Bukkit.getLogger().info("Opening file " + path1 + " with format " + this.format + " (existingOnly = " + existingOnly + ")");
 +
              // Paper end - cache regionfile does not exist state
              FileUtil.createDirectoriesSafe(this.folder); // Paper - only create directory if not existing only - moved from above
 -            RegionFile regionfile1 = new RegionFile(path1, this.folder, this.sync, this.isChunkData); // Paper - allow for chunk regionfiles to regen header
-+            // Kaiiju end
-+
 +            dev.kaiijumc.kaiiju.region.AbstractRegionFile regionfile1 = dev.kaiijumc.kaiiju.region.AbstractRegionFileFactory.getAbstractRegionFile(this.linearCompression, path1, this.folder, this.sync, this.isChunkData); // Paper - allow for chunk regionfiles to regen header // Kaiiju
  
              this.regionCache.putAndMoveToFirst(i, regionfile1);
@@ -890,7 +947,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              }
              // Paper end
              return regionfile1;
-@@ -173,7 +199,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -172,7 +197,7 @@ public class RegionFileStorage implements AutoCloseable {
      }
  
  
@@ -899,7 +956,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          synchronized (regionfile) {
              try (DataInputStream datainputstream = regionfile.getChunkDataInputStream(chunkCoordinate)) {
                  CompoundTag oversizedData = regionfile.getOversizedData(chunkCoordinate.x, chunkCoordinate.z);
-@@ -220,14 +246,14 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -219,14 +244,14 @@ public class RegionFileStorage implements AutoCloseable {
      @Nullable
      public CompoundTag read(ChunkPos pos) throws IOException {
          // CraftBukkit start - SPIGOT-5680: There's no good reason to preemptively create files on read, save that for writing
@@ -916,7 +973,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          // We add the regionfile parameter to avoid the potential deadlock (on fileLock) if we went back to obtain a regionfile
          // if we decide to re-read
          // Paper end
-@@ -237,7 +263,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -236,7 +261,7 @@ public class RegionFileStorage implements AutoCloseable {
  
          // Paper start
          if (regionfile.isOversized(pos.x, pos.z)) {
@@ -925,7 +982,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              return readOversizedChunk(regionfile, pos);
          }
          // Paper end
-@@ -251,12 +277,12 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -250,12 +275,12 @@ public class RegionFileStorage implements AutoCloseable {
                      if (this.isChunkData) {
                          ChunkPos chunkPos = ChunkSerializer.getChunkCoordinate(nbttagcompound);
                          if (!chunkPos.equals(pos)) {
@@ -941,7 +998,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
                              return null;
                          }
                      }
-@@ -290,13 +316,13 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -289,13 +314,13 @@ public class RegionFileStorage implements AutoCloseable {
  
          return nbttagcompound;
          } finally { // Paper start
@@ -957,7 +1014,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          if (regionfile == null) {
              return;
          }
-@@ -326,7 +352,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -325,7 +350,7 @@ public class RegionFileStorage implements AutoCloseable {
      }
  
      protected void write(ChunkPos pos, @Nullable CompoundTag nbt) throws IOException {
@@ -966,7 +1023,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          if (nbt == null && regionfile == null) {
              return;
          }
-@@ -376,7 +402,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -375,7 +400,7 @@ public class RegionFileStorage implements AutoCloseable {
          }
          // Paper end
          } finally { // Paper start
@@ -975,7 +1032,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          } // Paper end
      }
  
-@@ -385,7 +411,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -384,7 +409,7 @@ public class RegionFileStorage implements AutoCloseable {
          ObjectIterator objectiterator = this.regionCache.values().iterator();
  
          while (objectiterator.hasNext()) {
@@ -984,7 +1041,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
  
              try {
                  regionfile.close();
-@@ -401,7 +427,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -400,7 +425,7 @@ public class RegionFileStorage implements AutoCloseable {
          ObjectIterator objectiterator = this.regionCache.values().iterator();
  
          while (objectiterator.hasNext()) {
@@ -994,7 +1051,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              regionfile.flush();
          }
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
-index 5561b8499a0503b850974b1dc309edfb80219549..414aa3ae00c2d28e754235e3e93b6b623d4fd180 100644
+index 4aac1979cf57300825a999c876fcf24d3170e68e..3b96582f15d0985b670b5b5a1548800dee2154f4 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
 @@ -47,8 +47,8 @@ public class SectionStorage<R> extends RegionFileStorage implements AutoCloseabl
@@ -1003,16 +1060,16 @@ index 5561b8499a0503b850974b1dc309edfb80219549..414aa3ae00c2d28e754235e3e93b6b62
  
 -    public SectionStorage(Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) {
 -        super(path, dsync); // Paper - remove mojang I/O thread
-+    public SectionStorage(String format, int linearCompression, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // Kaiiju
++    public SectionStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // Kaiiju
 +        super(format, linearCompression, path, dsync); // Paper - remove mojang I/O thread // Kaiiju
          this.codec = codecFactory;
          this.factory = factory;
          this.fixerUpper = dataFixer;
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index 2ead9af36c4d41c61b68a960ff17e25894efeb2a..cba3411386b7a9f596017d021d08f30c78f0c52b 100644
+index b8f10ad8687f047f2b6705d47a91831e77d6b3b4..8882347b5b878c9c8cc1760941f2a153e967f780 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-@@ -554,7 +554,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
+@@ -560,7 +560,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
                  return true;
              }
  

patches/server/0005-Network-configuration.patch

@@ -1,16 +1,16 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Thu, 16 Feb 2023 01:38:59 +0200
-Subject: [PATCH] Kaiiju Network Configuration
+Subject: [PATCH] Network configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index b86c90cc3601e666998cfa12f44515f605bb53eb..7c6d43d8a360530344ef296f4477750c8a298607 100644
+index b7f43cce80742aa0cd523e930772ff84946f3eef..fa829cef4033625470dfae29ddf777e6c5ab8c55 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -198,4 +198,7 @@ public class KaiijuConfig {
+@@ -203,4 +203,7 @@ public class KaiijuConfig {
-     private static void regionFormatSettings() {
+         else
-         regionFormatDebug = getBoolean("region-format.debug", regionFormatDebug);
+             linearFlushThreads = Math.max(linearFlushThreads, 1);
      }
 +
 +    private static void networkSettings() {

patches/server/0006-Send-null-entity-packets.patch

@@ -1,16 +1,17 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Thu, 16 Feb 2023 01:49:54 +0200
-Subject: [PATCH] Purpur Network SendNullEntityPackets
+Subject: [PATCH] Send null entity packets
 
+This is from Purpur. Don't send null entity packets.
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index 7c6d43d8a360530344ef296f4477750c8a298607..ab08e11f13921163b8ff1ff51ff9e9b86d2b47c7 100644
+index fa829cef4033625470dfae29ddf777e6c5ab8c55..47e23a196ae5e44600a64184b69141c00235baca 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -198,7 +198,10 @@ public class KaiijuConfig {
+@@ -203,7 +203,10 @@ public class KaiijuConfig {
-     private static void regionFormatSettings() {
+         else
-         regionFormatDebug = getBoolean("region-format.debug", regionFormatDebug);
+             linearFlushThreads = Math.max(linearFlushThreads, 1);
      }
 +    
 +    public static boolean sendNullEntityPackets = true;
@@ -20,10 +21,10 @@ index 7c6d43d8a360530344ef296f4477750c8a298607..ab08e11f13921163b8ff1ff51ff9e9b8
      }
  }
 diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
-index b7fd8e70413c38923d0719aff803449e392383ac..fc778cf828c42065a7928d2f920fc1442aa4d503 100644
+index 892a334d1b1c0784ed6838d1aa066403998b9a9f..eab1b19323f588030834b9a4cecd515c817f79d1 100644
 --- a/src/main/java/net/minecraft/server/level/ServerEntity.java
 +++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
-@@ -205,6 +205,11 @@ public class ServerEntity {
+@@ -198,6 +198,11 @@ public class ServerEntity {
                          flag4 = true;
                          flag5 = true;
                      }
@@ -35,8 +36,8 @@ index b7fd8e70413c38923d0719aff803449e392383ac..fc778cf828c42065a7928d2f920fc144
                  }
  
                  if ((this.trackDelta || this.entity.hasImpulse || this.entity instanceof LivingEntity && ((LivingEntity) this.entity).isFallFlying()) && this.tickCount > 0) {
-@@ -279,6 +284,20 @@ public class ServerEntity {
+@@ -270,6 +275,20 @@ public class ServerEntity {
-         }));
+         });
      }
  
 +    // Kaiiju start - Don't send null move entity packets

patches/server/0007-Optimization-Configuration.patch

@@ -1,23 +1,23 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+From: kugge <sofiane.djerbi38@gmail.com>
-Date: Sat, 8 Apr 2023 23:32:34 +0300
+Date: Wed, 21 Jun 2023 17:26:24 +0200
-Subject: [PATCH] Kaiiju Gameplay Configuration
+Subject: [PATCH] Optimization Configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index b42a3466f145a92608c8746fd4beb529b4a60b01..6d0e1edfb7d3c020f70f6a194f16e836b462c4de 100644
+index 47e23a196ae5e44600a64184b69141c00235baca..90d97f3e0500a38e64ec0b88b2cab6ef28640c10 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -206,4 +206,7 @@ public class KaiijuConfig {
+@@ -209,4 +209,7 @@ public class KaiijuConfig {
+     private static void networkSettings() {
          sendNullEntityPackets = getBoolean("network.send-null-entity-packets", sendNullEntityPackets);
-         alternateKeepAlive = getBoolean("network.alternate-keepalive", alternateKeepAlive);
      }
 +
-+    private static void gameplaySettings() {
++    private static void optimizationSettings() {
 +    }
  }
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index b194f4dbebcbbf5bb4e026a0169e2d24806b46ec..73d79fe0077b28db2f9e7fa13a1ae6eff9abd6a9 100644
+index a6e7af5f4148e067660e9f5beeacde3a59a1de9c..6bd14857e0b0ef233f17f1a6e3e0fb313d59f641 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 @@ -143,4 +143,7 @@ public class KaiijuWorldConfig {
@@ -25,7 +25,6 @@ index b194f4dbebcbbf5bb4e026a0169e2d24806b46ec..73d79fe0077b28db2f9e7fa13a1ae6ef
          }
      }
 +
-+    private void gameplaySettings() {
++    private void optimizationSettings() {
 +    }
  }
-\ No newline at end of file

patches/server/0008-Gameplay-Configuration.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sat, 8 Apr 2023 23:32:34 +0300
+Subject: [PATCH] Gameplay Configuration
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 90d97f3e0500a38e64ec0b88b2cab6ef28640c10..859c2ac4e46b840f9552d1ccbf9409c9666e84de 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -212,4 +212,7 @@ public class KaiijuConfig {
+ 
+     private static void optimizationSettings() {
+     }
++
++    private static void gameplaySettings() {
++    }
+ }
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 6bd14857e0b0ef233f17f1a6e3e0fb313d59f641..05f9c01131e78927d88f1170c3eda4adf25ac8ba 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -146,4 +146,7 @@ public class KaiijuWorldConfig {
+ 
+     private void optimizationSettings() {
+     }
++
++    private void gameplaySettings() {
++    }
+ }

patches/server/0009-Shulker-drop-contents-when-destroyed.patch

@@ -1,26 +1,28 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Xymb <xymb@endcrystal.me>
 Date: Sat, 8 Apr 2023 23:38:13 +0300
-Subject: [PATCH] Kaiiju Gameplay ShulkerDropContentsWhenDestroyed
+Subject: [PATCH] Shulker drop contents when destroyed
 
+Don't drop shulker contents when shulker items are destroyed (by cactus,
+lava..)
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index 73d79fe0077b28db2f9e7fa13a1ae6eff9abd6a9..bac11b0e30a86d0689693ff129b53bcad7c2034c 100644
+index 05f9c01131e78927d88f1170c3eda4adf25ac8ba..55dcbb48450b24f80e0a04bedeb54f64e94ebb9e 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -144,6 +144,9 @@ public class KaiijuWorldConfig {
+@@ -144,7 +144,10 @@ public class KaiijuWorldConfig {
          }
      }
  
 +    public boolean shulkerBoxDropContentsWhenDestroyed = true;
 +
-     private void gameplaySettings() {
+     private void optimizationSettings() {
-+        shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
++        shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
      }
- }
+ 
-\ No newline at end of file
+     private void gameplaySettings() {
 diff --git a/src/main/java/net/minecraft/world/item/BlockItem.java b/src/main/java/net/minecraft/world/item/BlockItem.java
-index b0204af850ee182773ad458208cccd946ad148d5..cb67928eb9d493b4c43489aa06a5c0c947999dac 100644
+index e483186a5292b3b53bfb1af4d56f55fcc1a6106c..a178bb3a1810c39c0131ccedb926d61b761a4b0e 100644
 --- a/src/main/java/net/minecraft/world/item/BlockItem.java
 +++ b/src/main/java/net/minecraft/world/item/BlockItem.java
 @@ -288,7 +288,7 @@ public class BlockItem extends Item {
@@ -28,7 +30,7 @@ index b0204af850ee182773ad458208cccd946ad148d5..cb67928eb9d493b4c43489aa06a5c0c9
      @Override
      public void onDestroyed(ItemEntity entity) {
 -        if (this.block instanceof ShulkerBoxBlock) {
-+        if (this.block instanceof ShulkerBoxBlock && entity.getLevel().kaiijuConfig.shulkerBoxDropContentsWhenDestroyed) { // Kaiiju
++        if (this.block instanceof ShulkerBoxBlock && entity.level().kaiijuConfig.shulkerBoxDropContentsWhenDestroyed) { // Kaiiju
              ItemStack itemstack = entity.getItem();
              CompoundTag nbttagcompound = BlockItem.getBlockEntityData(itemstack);
  

patches/server/0010-Server-mod-name.patch

@@ -1,15 +1,15 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
 Date: Sun, 9 Apr 2023 17:06:46 +0300
-Subject: [PATCH] Purpur Gameplay ServerModName
+Subject: [PATCH] Server mod name
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index 6d0e1edfb7d3c020f70f6a194f16e836b462c4de..9fb33b35b4d6842ca8597f77a4116e3983ebfbcb 100644
+index 859c2ac4e46b840f9552d1ccbf9409c9666e84de..2aa40f154c48ee7558b0efdc3bf26e205bb9f799 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -207,6 +207,9 @@ public class KaiijuConfig {
+@@ -213,6 +213,9 @@ public class KaiijuConfig {
-         alternateKeepAlive = getBoolean("network.alternate-keepalive", alternateKeepAlive);
+     private static void optimizationSettings() {
      }
  
 +    public static String serverModName = "Kaiiju";
@@ -19,7 +19,7 @@ index 6d0e1edfb7d3c020f70f6a194f16e836b462c4de..9fb33b35b4d6842ca8597f77a4116e39
      }
  }
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index a7233bcc99e9bf148348ebb36bbb15b2eadb381f..865b022bb52d8d7b12355a01f3216a4ee8d4c045 100644
+index ef9a17e9b9cd2866374aa22c5ec7c5b46b06e341..211868046f442f316f419734c03b2fa535bad196 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
 @@ -1833,7 +1833,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa

patches/server/0011-Crash-on-broken-symlink.patch

@@ -1,17 +1,17 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Xymb <xymb@endcrystal.me>
 Date: Fri, 14 Apr 2023 02:12:58 +0200
-Subject: [PATCH] Kaiiju Linear CrashOnBrokenSymlink
+Subject: [PATCH] Crash on broken symlink
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index bac11b0e30a86d0689693ff129b53bcad7c2034c..0f0cfd958f7d2c6d2ca4192be1b986900a2bfa53 100644
+index 55dcbb48450b24f80e0a04bedeb54f64e94ebb9e..f3f824d0ab1a2a72825c40b67192386479a0b34c 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 @@ -127,6 +127,7 @@ public class KaiijuWorldConfig {
+     }
  
-     public List<String> regionFormatList = Arrays.asList("ANVIL", "LINEAR");
+     public RegionFileFormat regionFormatName = RegionFileFormat.ANVIL;
-     public String regionFormatName = "ANVIL";
 +    public boolean linearCrashOnBrokenSymlink = true;
      public int regionFormatLinearCompressionLevel = 1;
  
@@ -25,12 +25,12 @@ index bac11b0e30a86d0689693ff129b53bcad7c2034c..0f0cfd958f7d2c6d2ca4192be1b98690
  
      public boolean shulkerBoxDropContentsWhenDestroyed = true;
 diff --git a/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java b/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
-index a62a1b281bd0b6ad7d59b45b9470d84f496f6539..7f87dfa131ab7d40a94cf6355765478f2961342e 100644
+index abf5e2a06af9853b58ac9107cd6e9787c4185c66..389c68c0becd2f69dc1004d0b383f1a8784214c0 100644
 --- a/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
 +++ b/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
-@@ -86,10 +86,11 @@ public class ThreadedWorldUpgrader {
+@@ -87,10 +87,11 @@ public class ThreadedWorldUpgrader {
          // Kaiiju start
-         String formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
+         dev.kaiijumc.kaiiju.region.RegionFileFormat formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
          int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatLinearCompressionLevel;
 +        boolean linearCrashOnBrokenSymlink = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.linearCrashOnBrokenSymlink;
          LOGGER.info("Using format " + formatName + " (" + linearCompression + ")");
@@ -42,11 +42,11 @@ index a62a1b281bd0b6ad7d59b45b9470d84f496f6539..7f87dfa131ab7d40a94cf6355765478f
          long expectedChunks = (long)regionFiles.length * (32L * 32L);
  
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 43503974433c4d1808b2acb2b79f46d640725dc0..73ac94eaebdeaa94c83f1f23b53e686d867e6f98 100644
+index 90991db650d2f0e9a3f7b00bb5b7586ade003bb0..c0ee91a1f333434a2529429d670b62a83aeeb7b2 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -272,7 +272,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -210,7 +210,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
-     // Paper end
+     // Paper end - optimise chunk tick iteration
  
      public ChunkMap(ServerLevel world, LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, StructureTemplateManager structureTemplateManager, Executor executor, BlockableEventLoop<Runnable> mainThreadExecutor, LightChunkGetter chunkProvider, ChunkGenerator chunkGenerator, ChunkProgressListener worldGenerationProgressListener, ChunkStatusUpdateListener chunkStatusChangeListener, Supplier<DimensionDataStorage> persistentStateManagerFactory, int viewDistance, boolean dsync) {
 -        super(world.getLevel().kaiijuConfig.regionFormatName, world.getLevel().kaiijuConfig.regionFormatLinearCompressionLevel, session.getDimensionPath(world.dimension()).resolve("region"), dataFixer, dsync); // Kaiiju
@@ -54,31 +54,31 @@ index 43503974433c4d1808b2acb2b79f46d640725dc0..73ac94eaebdeaa94c83f1f23b53e686d
          // Paper - rewrite chunk system
          this.tickingGenerated = new AtomicInteger();
          //this.playerMap = new PlayerMap(); // Folia - region threading
-@@ -317,7 +317,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -255,7 +255,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          this.lightEngine = new ThreadedLevelLightEngine(chunkProvider, this, this.level.dimensionType().hasSkyLight(), null, null); // Paper - rewrite chunk system
          this.distanceManager = new ChunkMap.ChunkDistanceManager(executor, mainThreadExecutor);
          this.overworldDataStorage = persistentStateManagerFactory;
 -        this.poiManager = new PoiManager(this.level.kaiijuConfig.regionFormatName, this.level.kaiijuConfig.regionFormatLinearCompressionLevel, path.resolve("poi"), dataFixer, dsync, iregistrycustom, world); // Kaiiju
 +        this.poiManager = new PoiManager(this.level.kaiijuConfig.regionFormatName, this.level.kaiijuConfig.regionFormatLinearCompressionLevel, this.level.kaiijuConfig.linearCrashOnBrokenSymlink, path.resolve("poi"), dataFixer, dsync, iregistrycustom, world); // Kaiiju
-         this.setViewDistance(viewDistance);
+         this.setServerViewDistance(viewDistance);
          // Paper start
          this.dataRegionManager = new io.papermc.paper.chunk.SingleThreadChunkRegionManager(this.level, 2, (1.0 / 3.0), 1, 6, "Data", DataRegionData::new, DataRegionSectionData::new);
 diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
-index 20359c63b19c7e0c703ef1562fb774803d631c41..35ae624be25b66d5615dc19cbe7eb8785c7029b5 100644
+index eb7a06f4d0e87d8cba86c7eccf2c1fa02ad503d2..95e4ea89dbffb72322506e5e6c79e3605e2f9593 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -425,8 +425,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -451,8 +451,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
-     private final EntityRegionFileStorage entityStorage;
  
      private static final class EntityRegionFileStorage extends net.minecraft.world.level.chunk.storage.RegionFileStorage {
--        public EntityRegionFileStorage(String format, int linearCompression, Path directory, boolean dsync) { // Kaiiju
+ 
+-        public EntityRegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync) { // Kaiiju
 -            super(format, linearCompression, directory, dsync); // Kaiiju
-+        public EntityRegionFileStorage(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync) { // Kaiiju
++        public EntityRegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync) { // Kaiiju
 +            super(format, linearCompression, linearCrashOnBrokenSymlink, directory, dsync); // Kaiiju
          }
  
          protected void write(ChunkPos pos, net.minecraft.nbt.CompoundTag nbt) throws IOException {
-@@ -632,7 +632,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -808,7 +808,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
          // CraftBukkit end
          boolean flag2 = minecraftserver.forceSynchronousWrites();
          DataFixer datafixer = minecraftserver.getFixerUpper();
@@ -88,12 +88,12 @@ index 20359c63b19c7e0c703ef1562fb774803d631c41..35ae624be25b66d5615dc19cbe7eb878
          // this.entityManager = new PersistentEntitySectionManager<>(Entity.class, new ServerLevel.EntityCallbacks(), entitypersistentstorage, this.entitySliceManager); // Paper // Paper - rewrite chunk system
          StructureTemplateManager structuretemplatemanager = minecraftserver.getStructureManager();
 diff --git a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
-index 469802b9c454c5e98c0a55ba89559d9d8ba0c4c0..1652398c211c4366dde1d973bdb8e9d2c5c67ff4 100644
+index 3b02b7905fd16be28ba986302c1f99dfb5eb2ab8..d7838a09a7d5a9a3401b1a90bc893f0ac886a70f 100644
 --- a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
 +++ b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
-@@ -119,7 +119,8 @@ public class WorldUpgrader {
+@@ -120,7 +120,8 @@ public class WorldUpgrader {
                  String worldName = this.levelStorage.getLevelId();
-                 String formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
+                 dev.kaiijumc.kaiiju.region.RegionFileFormat formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatName;
                  int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.regionFormatLinearCompressionLevel;
 -                builder1.put(resourcekey1, new ChunkStorage(formatName, linearCompression, path.resolve("region"), this.dataFixer, true));
 +                boolean linearCrashOnBrokenSymlink = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().kaiijuConfig.linearCrashOnBrokenSymlink;
@@ -102,32 +102,31 @@ index 469802b9c454c5e98c0a55ba89559d9d8ba0c4c0..1652398c211c4366dde1d973bdb8e9d2
              }
  
 diff --git a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
-index f560aa13c6c8ffecb456f478687dc6a9eb5e8017..f0354203f974a8d7440407a5561ffa0fcb63182d 100644
+index 187ff795192c7eb56dffafa1ff6fa3068ac341c3..b9cf3b9f2cdb554d267c6dc3436e011c7e607228 100644
 --- a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
 +++ b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
 @@ -59,8 +59,8 @@ public class PoiManager extends SectionStorage<PoiSection> {
      // Paper end - rewrite chunk system
  
  
--    public PoiManager(String formatName, int linearCompression, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // Kaiiju
+-    public PoiManager(dev.kaiijumc.kaiiju.region.RegionFileFormat formatName, int linearCompression, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // Kaiiju
 -        super(formatName, linearCompression, path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, registryManager, world); // Kaiiju
-+    public PoiManager(String formatName, int linearCompression, boolean linearCrashOnBrokenSymlink, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // Kaiiju
++    public PoiManager(dev.kaiijumc.kaiiju.region.RegionFileFormat formatName, int linearCompression, boolean linearCrashOnBrokenSymlink, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // Kaiiju
 +        super(formatName, linearCompression, linearCrashOnBrokenSymlink, path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, registryManager, world); // Kaiiju
          this.world = (net.minecraft.server.level.ServerLevel)world; // Paper - rewrite chunk system
      }
  
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
-index 52c2e0fe73a5af18535a2b0b9a506919e3f93003..ea54af3f68c6534ff5a71ca0b7a99d126557868e 100644
+index 1d880f27dd147da683fc30ed6f1bfa43ecdb7d93..41598adf6d49a44bcaadfff3797221460a6d93ba 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
-@@ -37,12 +37,12 @@ public class ChunkStorage implements AutoCloseable {
+@@ -37,11 +37,11 @@ public class ChunkStorage implements AutoCloseable {
      public final RegionFileStorage regionFileCache;
      // Paper end - async chunk loading
  
--    public ChunkStorage(String format, int linearCompression, Path directory, DataFixer dataFixer, boolean dsync) { // Kaiiju
+-    public ChunkStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, DataFixer dataFixer, boolean dsync) { // Kaiiju
-+    public ChunkStorage(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, DataFixer dataFixer, boolean dsync) { // Kaiiju
++    public ChunkStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, DataFixer dataFixer, boolean dsync) { // Kaiiju
          this.fixerUpper = dataFixer;
- 
          // Paper start - async chunk io
          // remove IO worker
 -        this.regionFileCache = new RegionFileStorage(format, linearCompression, directory, dsync, true); // Paper - nuke IOWorker // Paper
@@ -136,10 +135,10 @@ index 52c2e0fe73a5af18535a2b0b9a506919e3f93003..ea54af3f68c6534ff5a71ca0b7a99d12
      }
  
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
-index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc23484385aac 100644
+index 21537b14c6c6789da3db04577f1c93998397678d..93d0a6f635544b3a86111e1854a27cfdd8aee7b4 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
-@@ -20,6 +20,7 @@ import net.minecraft.world.level.ChunkPos;
+@@ -19,6 +19,7 @@ import net.minecraft.world.level.ChunkPos;
  
  public class RegionFileStorage implements AutoCloseable {
  
@@ -147,26 +146,26 @@ index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc234
      public static final String ANVIL_EXTENSION = ".mca";
      private static final int MAX_CACHE_SIZE = 256;
      public final Long2ObjectLinkedOpenHashMap<dev.kaiijumc.kaiiju.region.AbstractRegionFile> regionCache = new Long2ObjectLinkedOpenHashMap(); // Kaiiju
-@@ -28,6 +29,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -27,6 +28,7 @@ public class RegionFileStorage implements AutoCloseable {
      // Kaiiju start - Per world chunk format
-     public final String format;
+     public final dev.kaiijumc.kaiiju.region.RegionFileFormat format;
      public final int linearCompression;
 +    public final boolean linearCrashOnBrokenSymlink;
      // Kaiiju end
- 
      private final boolean isChunkData; // Paper
-@@ -61,14 +63,15 @@ public class RegionFileStorage implements AutoCloseable {
+ 
+@@ -59,14 +61,15 @@ public class RegionFileStorage implements AutoCloseable {
      }
      // Paper end - cache regionfile does not exist state
  
--    protected RegionFileStorage(String format, int linearCompression, Path directory, boolean dsync) { // Paper - protected constructor
+-    protected RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync) { // Paper - protected constructor
-+    protected RegionFileStorage(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync) { // Paper - protected constructor
++    protected RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync) { // Paper - protected constructor
          // Paper start - add isChunkData param
 -        this(format, linearCompression, directory, dsync, false);
 +        this(format, linearCompression, linearCrashOnBrokenSymlink, directory, dsync, false);
      }
--    RegionFileStorage(String format, int linearCompression, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
+-    RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
-+    RegionFileStorage(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
++    RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
          // Kaiiju start
          this.format = format;
          this.linearCompression = linearCompression;
@@ -174,7 +173,7 @@ index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc234
          // Kaiiju end
          this.isChunkData = isChunkData;
          // Paper end - add isChunkData param
-@@ -109,6 +112,20 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -108,6 +111,20 @@ public class RegionFileStorage implements AutoCloseable {
          return regionfile != null ? regionfile.hasChunk(pos) : false;
      }
  
@@ -195,7 +194,7 @@ index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc234
      public synchronized dev.kaiijumc.kaiiju.region.AbstractRegionFile getRegionFile(ChunkPos chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit // Kaiiju
          return this.getRegionFile(chunkcoordintpair, existingOnly, false);
      }
-@@ -144,6 +161,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -143,6 +160,7 @@ public class RegionFileStorage implements AutoCloseable {
              if (existingOnly) {
                  Path anvil = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + ".mca");
                  Path linear = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + ".linear");
@@ -203,25 +202,25 @@ index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc234
                  if (java.nio.file.Files.exists(anvil)) path1 = anvil;
                  else if (java.nio.file.Files.exists(linear)) path1 = linear;
                  else {
-@@ -156,6 +174,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -158,6 +176,7 @@ public class RegionFileStorage implements AutoCloseable {
-                     default -> "mca";
                  };
                  path1 = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + "." + extension);
-+                guardAgainstBrokenSymlinks(path1);
+                 // Kaiiju end
++                guardAgainstBrokenSymlinks(path1); // Kaiiju - Crash on broken symlink
                  this.createRegionFile(regionPos);
              }
-             if (dev.kaiijumc.kaiiju.KaiijuConfig.regionFormatDebug)
+ 
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
-index 414aa3ae00c2d28e754235e3e93b6b623d4fd180..15e376fac063430e4355c6ffcd25c35a8ce20c5b 100644
+index 3b96582f15d0985b670b5b5a1548800dee2154f4..e8f1be83ff75045d4d57a43f1899efee7bd47183 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
 @@ -47,8 +47,8 @@ public class SectionStorage<R> extends RegionFileStorage implements AutoCloseabl
      public final RegistryAccess registryAccess; // Paper - rewrite chunk system
      protected final LevelHeightAccessor levelHeightAccessor;
  
--    public SectionStorage(String format, int linearCompression, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // Kaiiju
+-    public SectionStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // Kaiiju
 -        super(format, linearCompression, path, dsync); // Paper - remove mojang I/O thread // Kaiiju
-+    public SectionStorage(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // Kaiiju
++    public SectionStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // Kaiiju
 +        super(format, linearCompression, linearCrashOnBrokenSymlink, path, dsync); // Paper - remove mojang I/O thread // Kaiiju
          this.codec = codecFactory;
          this.factory = factory;

patches/server/0012-Toggle-void-trading.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 23 Apr 2023 15:34:30 +0300
+Subject: [PATCH] Toggle void trading
+
+Don't close trading windows when the villager is unloaded.
+You should set chunk-unloads to 0s in paper config file to enable void
+trading. Or use Kaiivoid plugin.
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index f3f824d0ab1a2a72825c40b67192386479a0b34c..95ed6cb7b94797187d1011cab344e187b39d9193 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -152,6 +152,9 @@ public class KaiijuWorldConfig {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+     }
+ 
++    public boolean fixVoidTrading = true;
++
+     private void gameplaySettings() {
++        fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 383e500ec098d671442f81bba6742ee44ca64450..3950b404482b0c6244141301e6ee3b4013327b2b 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -3016,7 +3016,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+             // Spigot Start
+             if (entity.getBukkitEntity() instanceof org.bukkit.inventory.InventoryHolder && (!(entity instanceof ServerPlayer) || entity.getRemovalReason() != Entity.RemovalReason.KILLED)) { // SPIGOT-6876: closeInventory clears death message
+                 // Paper start
+-                if (entity.getBukkitEntity() instanceof org.bukkit.inventory.Merchant merchant && merchant.getTrader() != null) {
++                if (entity.level().kaiijuConfig.fixVoidTrading && entity.getBukkitEntity() instanceof org.bukkit.inventory.Merchant merchant && merchant.getTrader() != null) { // Kaiiju
+                     merchant.getTrader().closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.UNLOADED);
+                 }
+                 // Paper end

patches/server/0013-Toggle-optimize-hoppers.patch

@@ -0,0 +1,219 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Thu, 27 Apr 2023 03:49:08 +0300
+Subject: [PATCH] Toggle optimize hoppers
+
+Paper optimize hoppers patch break a lot of technical redstone farms because of piston updates. (Example: twiti888 wood farm)
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 95ed6cb7b94797187d1011cab344e187b39d9193..6d7356cc07da58b1cef8d8963e790251d765de2c 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -147,9 +147,11 @@ public class KaiijuWorldConfig {
+     }
+ 
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
++    public boolean optimizeHoppers = true;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
++        optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
+     }
+ 
+     public boolean fixVoidTrading = true;
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java
+index 97858b410769f95e4a8d8acd757216ffe06f8cf4..036683a0ea4df0fe2bd7aca434471d3de0c07710 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java
+@@ -441,49 +441,51 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+             if (HopperBlockEntity.isFullContainer(iinventory1, enumdirection)) {
+                 return false;
+             } else {
++                // Kaiiju start - Toggle paper broken redstone
+                 // Paper start - replace logic; MAKE SURE TO CHECK FOR DIFFS ON UPDATES
+-                return hopperPush(world, iinventory1, enumdirection, hopper);
+-                // for (int i = 0; i < iinventory.getContainerSize(); ++i) {
+-                //     if (!iinventory.getItem(i).isEmpty()) {
+-                //         ItemStack itemstack = iinventory.getItem(i).copy();
+-                //         // ItemStack itemstack1 = addItem(iinventory, iinventory1, iinventory.removeItem(i, 1), enumdirection);
+-
+-                //         // CraftBukkit start - Call event when pushing items into other inventories
+-                //         CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot
+-
+-                //         Inventory destinationInventory;
+-                //        // Have to special case large chests as they work oddly
+-                //         if (iinventory1 instanceof CompoundContainer) {
+-                //             destinationInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory1);
+-                //         } else if (iinventory1.getOwner() != null) {
+-                //             destinationInventory = iinventory1.getOwner().getInventory();
+-                //         } else {
+-                //             destinationInventory = new CraftInventory(iinventory);
+-                //         }
+-
+-                //         InventoryMoveItemEvent event = new InventoryMoveItemEvent(iinventory.getOwner().getInventory(), oitemstack.clone(), destinationInventory, true);
+-                //         world.getCraftServer().getPluginManager().callEvent(event);
+-                //         if (event.isCancelled()) {
+-                //             hopper.setItem(i, itemstack);
+-                //             hopper.setCooldown(world.spigotConfig.hopperTransfer); // Spigot
+-                //             return false;
+-                //         }
+-                //         int origCount = event.getItem().getAmount(); // Spigot
+-                //         ItemStack itemstack1 = HopperBlockEntity.addItem(iinventory, iinventory1, CraftItemStack.asNMSCopy(event.getItem()), enumdirection);
++                if (world.kaiijuConfig.optimizeHoppers) return hopperPush(world, iinventory1, enumdirection, hopper);
++                for (int i = 0; i < iinventory.getContainerSize(); ++i) {
++                    if (!iinventory.getItem(i).isEmpty()) {
++                        ItemStack itemstack = iinventory.getItem(i).copy();
++                        // ItemStack itemstack1 = addItem(iinventory, iinventory1, iinventory.removeItem(i, 1), enumdirection);
++
++                        // CraftBukkit start - Call event when pushing items into other inventories
++                        CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot
++
++                        Inventory destinationInventory;
++                       // Have to special case large chests as they work oddly
++                        if (iinventory1 instanceof CompoundContainer) {
++                            destinationInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory1);
++                        } else if (iinventory1.getOwner() != null) {
++                            destinationInventory = iinventory1.getOwner().getInventory();
++                        } else {
++                            destinationInventory = new CraftInventory(iinventory);
++                        }
++
++                        InventoryMoveItemEvent event = new InventoryMoveItemEvent(iinventory.getOwner().getInventory(), oitemstack.clone(), destinationInventory, true);
++                        world.getCraftServer().getPluginManager().callEvent(event);
++                        if (event.isCancelled()) {
++                            hopper.setItem(i, itemstack);
++                            hopper.setCooldown(world.spigotConfig.hopperTransfer); // Spigot
++                            return false;
++                        }
++                        int origCount = event.getItem().getAmount(); // Spigot
++                        ItemStack itemstack1 = HopperBlockEntity.addItem(iinventory, iinventory1, CraftItemStack.asNMSCopy(event.getItem()), enumdirection);
+                         // CraftBukkit end
+ 
+-                //         if (itemstack1.isEmpty()) {
+-                //             iinventory1.setChanged();
+-                //             return true;
+-                //         }
++                        if (itemstack1.isEmpty()) {
++                            iinventory1.setChanged();
++                            return true;
++                        }
+ 
+-                //         itemstack.shrink(origCount - itemstack1.getCount()); // Spigot
+-                //         iinventory.setItem(i, itemstack);
+-                //     }
+-                // }
++                        itemstack.shrink(origCount - itemstack1.getCount()); // Spigot
++                        iinventory.setItem(i, itemstack);
++                    }
++                }
+ 
+-                // return false;
++                return false;
+                 // Paper end
++                // Kaiiju end
+             }
+         }
+     }
+@@ -525,6 +527,12 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+         if (iinventory != null) {
+             Direction enumdirection = Direction.DOWN;
+ 
++            // Kaiiju start - toggle paper broken redstone
++            if (!world.kaiijuConfig.optimizeHoppers)
++            return HopperBlockEntity.isEmptyContainer(iinventory, enumdirection) ? false : HopperBlockEntity.getSlots(iinventory, enumdirection).anyMatch((i) -> {
++                return HopperBlockEntity.a(hopper, iinventory, i, enumdirection, world); // Spigot
++            });
++            // Kaiiju end
+             // Paper start - optimize hoppers and remove streams
+             worldData.skipPullModeEventFire = worldData.skipHopperEvents; // Folia - region threading
+             // merge container isEmpty check and move logic into one loop
+@@ -573,48 +581,50 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+     private static boolean a(Hopper ihopper, Container iinventory, int i, Direction enumdirection, Level world) { // Spigot
+         ItemStack itemstack = iinventory.getItem(i);
+ 
++        // Kaiiju start - toggle paper broken redstone
+         // Paper start - replace pull logic; MAKE SURE TO CHECK FOR DIFFS WHEN UPDATING
+         if (!itemstack.isEmpty() && HopperBlockEntity.canTakeItemFromContainer(ihopper, iinventory, itemstack, i, enumdirection)) { // If this logic changes, update above. this is left unused incase reflective plugins
+-            return hopperPull(world, ihopper, iinventory, itemstack, i);
+-            // ItemStack itemstack1 = itemstack.copy();
+-            // // ItemStack itemstack2 = addItem(iinventory, ihopper, iinventory.removeItem(i, 1), (EnumDirection) null);
+-            // // CraftBukkit start - Call event on collection of items from inventories into the hopper
+-            // CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot
+-
+-            // Inventory sourceInventory;
+-            // // Have to special case large chests as they work oddly
+-            // if (iinventory instanceof CompoundContainer) {
+-            //     sourceInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory);
+-            // } else if (iinventory.getOwner() != null) {
+-            //     sourceInventory = iinventory.getOwner().getInventory();
+-            // } else {
+-            //     sourceInventory = new CraftInventory(iinventory);
+-            // }
+-
+-            // InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory, oitemstack.clone(), ihopper.getOwner().getInventory(), false);
+-
+-            // Bukkit.getServer().getPluginManager().callEvent(event);
+-            // if (event.isCancelled()) {
+-            //     iinventory.setItem(i, itemstack1);
+-
+-                // if (ihopper instanceof HopperBlockEntity) {
+-                //     ((HopperBlockEntity) ihopper).setCooldown(world.spigotConfig.hopperTransfer); // Spigot
+-                // }
+-
+-                // return false;
+-            // }
+-            // int origCount = event.getItem().getAmount(); // Spigot
+-            // ItemStack itemstack2 = HopperBlockEntity.addItem(iinventory, ihopper, CraftItemStack.asNMSCopy(event.getItem()), null);
+-            // // CraftBukkit end
+-
+-            // if (itemstack2.isEmpty()) {
+-            //     iinventory.setChanged();
+-            //     return true;
+-            // }
+-
+-            // itemstack1.shrink(origCount - itemstack2.getCount()); // Spigot
+-            // iinventory.setItem(i, itemstack1);
++            if (world.kaiijuConfig.optimizeHoppers) return hopperPull(world, ihopper, iinventory, itemstack, i);
++            ItemStack itemstack1 = itemstack.copy();
++            // ItemStack itemstack2 = addItem(iinventory, ihopper, iinventory.removeItem(i, 1), (EnumDirection) null);
++            // CraftBukkit start - Call event on collection of items from inventories into the hopper
++            CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot
++
++            Inventory sourceInventory;
++            // Have to special case large chests as they work oddly
++            if (iinventory instanceof CompoundContainer) {
++                sourceInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory);
++            } else if (iinventory.getOwner() != null) {
++                sourceInventory = iinventory.getOwner().getInventory();
++            } else {
++                sourceInventory = new CraftInventory(iinventory);
++            }
++
++            InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory, oitemstack.clone(), ihopper.getOwner().getInventory(), false);
++
++            Bukkit.getServer().getPluginManager().callEvent(event);
++            if (event.isCancelled()) {
++                iinventory.setItem(i, itemstack1);
++
++                if (ihopper instanceof HopperBlockEntity) {
++                    ((HopperBlockEntity) ihopper).setCooldown(world.spigotConfig.hopperTransfer); // Spigot
++                }
++
++                return false;
++            }
++            int origCount = event.getItem().getAmount(); // Spigot
++            ItemStack itemstack2 = HopperBlockEntity.addItem(iinventory, ihopper, CraftItemStack.asNMSCopy(event.getItem()), null);
++            // CraftBukkit end
++
++            if (itemstack2.isEmpty()) {
++                iinventory.setChanged();
++                return true;
++            }
++
++            itemstack1.shrink(origCount - itemstack2.getCount()); // Spigot
++            iinventory.setItem(i, itemstack1);
+             // Paper end
++            // Kaiiju end
+         }
+ 
+         return false;

patches/server/0014-Toggle-tick-level-when-empty.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Thu, 4 May 2023 19:53:33 +0300
+Subject: [PATCH] Toggle tick level when empty
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 6d7356cc07da58b1cef8d8963e790251d765de2c..601b9867d839f4928ba993ee8f00df9c330a0fe3 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -148,10 +148,12 @@ public class KaiijuWorldConfig {
+ 
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean optimizeHoppers = true;
++    public boolean tickWhenEmpty = true;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
++        tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
+     }
+ 
+     public boolean fixVoidTrading = true;
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 3950b404482b0c6244141301e6ee3b4013327b2b..ca065f1600713a7f509e54580c625287e94d1e40 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -942,7 +942,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+         timings.doSounds.stopTiming(); // Spigot
+         regionizedWorldData.setHandlingTick(false); // Folia - regionised ticking
+         gameprofilerfiller.pop();
+-        boolean flag = true || !this.players.isEmpty() || !this.getForcedChunks().isEmpty(); // CraftBukkit - this prevents entity cleanup, other issues on servers with no players
++        boolean flag = kaiijuConfig.tickWhenEmpty || !this.players.isEmpty() || !this.getForcedChunks().isEmpty(); // CraftBukkit - this prevents entity cleanup, other issues on servers with no players // Kaiiju - i don't think so
+ 
+         if (flag) {
+             this.resetEmptyTime();

patches/server/0015-Toggle-break-redstone-on-top-of-trap-doors-early.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 7 May 2023 20:04:06 +0300
+Subject: [PATCH] Toggle break redstone on top of trap doors early
+
+That patch break vanilla mechanics such as portal slicing.
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 601b9867d839f4928ba993ee8f00df9c330a0fe3..e7ee85b09aa4438868e068551280b13e84cdfdb8 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -157,8 +157,10 @@ public class KaiijuWorldConfig {
+     }
+ 
+     public boolean fixVoidTrading = true;
++    public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
+ 
+     private void gameplaySettings() {
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
++        breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/level/block/TrapDoorBlock.java b/src/main/java/net/minecraft/world/level/block/TrapDoorBlock.java
+index b9e3c9cd709d42bced85436720ccc7b9c7e49552..5e6d64408a5da3f337d32bb8ac5ac2532b04490c 100644
+--- a/src/main/java/net/minecraft/world/level/block/TrapDoorBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/TrapDoorBlock.java
+@@ -125,6 +125,7 @@ public class TrapDoorBlock extends HorizontalDirectionalBlock implements SimpleW
+                 }
+                 // CraftBukkit end
+                 boolean open = (Boolean) state.getValue(TrapDoorBlock.OPEN) != flag1; // Paper - break redstone on trapdoors early
++                if (world.kaiijuConfig.breakRedstoneOnTopOfTrapDoorsEarly) { // Kaiiju - trigger break redstone on trapdoors early
+                 // Paper start - break redstone on trapdoors early
+                 // note: this must run before any state for this block/its neighborus are written to the world
+                 // we allow the redstone event to fire so that plugins can block
+@@ -143,6 +144,7 @@ public class TrapDoorBlock extends HorizontalDirectionalBlock implements SimpleW
+                     }
+                 }
+                 // Paper end - break redstone on trapdoors early
++                } // Kaiiju  - trigger break redstone on trapdoors early
+                 if (open) { // Paper - break redstone on trapdoors early
+                     state = (BlockState) state.setValue(TrapDoorBlock.OPEN, flag1);
+                     this.playSound((Player) null, world, pos, flag1);

patches/server/0016-Add-SIMD-utilities.patch

@@ -0,0 +1,141 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Thu, 11 May 2023 05:02:40 +0300
+Subject: [PATCH] Add SIMD utilities
+
+Patch from Pufferfish
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index 07efc7e9593f619c3b71bb3936077a66a0f2964d..8aa2f328f7fe3d85f7ddf05fa0259061eb950fff 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -68,6 +68,12 @@ dependencies {
+ }
+ 
+ val craftbukkitPackageVersion = "1_20_R2" // Paper
++// Kaiiju start - Pufferfish - SIMD utilities
++tasks.withType<JavaCompile> {
++    val compilerArgs = options.compilerArgs
++    compilerArgs.add("--add-modules=jdk.incubator.vector")
++}
++// Kaiiju end
+ tasks.jar {
+     archiveClassifier.set("dev")
+ 
+diff --git a/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..586b4cd007b3b106966524e2697edddf88e3ac9d
+--- /dev/null
++++ b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java
+@@ -0,0 +1,59 @@
++package gg.pufferfish.pufferfish.simd;
++
++import org.bukkit.Bukkit;
++import java.util.logging.Level;
++import java.util.logging.Logger;
++import jdk.incubator.vector.FloatVector;
++import jdk.incubator.vector.IntVector;
++import jdk.incubator.vector.VectorSpecies;
++
++/**
++ * Basically, java is annoying and we have to push this out to its own class.
++ */
++public class SIMDChecker {
++
++	public static boolean canEnable(Logger logger) {
++		try {
++			if (SIMDDetection.getJavaVersion() != 17 && SIMDDetection.getJavaVersion() != 18 && SIMDDetection.getJavaVersion() != 19) {
++				return false;
++			} else {
++				SIMDDetection.testRun = true;
++
++				VectorSpecies<Integer> ISPEC = IntVector.SPECIES_PREFERRED;
++				VectorSpecies<Float> FSPEC = FloatVector.SPECIES_PREFERRED;
++
++				logger.log(Level.INFO, "Max SIMD vector size on this system is " + ISPEC.vectorBitSize() + " bits (int)");
++				logger.log(Level.INFO, "Max SIMD vector size on this system is " + FSPEC.vectorBitSize() + " bits (float)");
++
++				if (ISPEC.elementSize() < 2 || FSPEC.elementSize() < 2) {
++					logger.log(Level.WARNING, "SIMD is not properly supported on this system!");
++					return false;
++				}
++
++				return true;
++			}
++		} catch (NoClassDefFoundError | Exception ignored) {} // Basically, we don't do anything. This lets us detect if it's not functional and disable it.
++		return false;
++	}
++
++    public static void simdWarning() {
++		// Attempt to detect vectorization
++		try {
++			SIMDDetection.isEnabled = SIMDDetection.canEnable(Bukkit.getLogger());
++			SIMDDetection.versionLimited = SIMDDetection.getJavaVersion() != 17 && SIMDDetection.getJavaVersion() != 18 && SIMDDetection.getJavaVersion() != 19;
++		} catch (NoClassDefFoundError | Exception ignored) {
++			ignored.printStackTrace();
++		}
++
++		if (SIMDDetection.isEnabled) {
++			Bukkit.getLogger().info("SIMD operations detected as functional. Will replace some operations with faster versions.");
++		} else if (SIMDDetection.versionLimited) {
++			Bukkit.getLogger().warning("Will not enable SIMD! These optimizations are only safely supported on Java 17, Java 18, and Java 19.");
++		} else {
++			Bukkit.getLogger().warning("SIMD operations are available for your server, but are not configured!");
++			Bukkit.getLogger().warning("To enable additional optimizations, add \"--add-modules=jdk.incubator.vector\" to your startup flags, BEFORE the \"-jar\".");
++			Bukkit.getLogger().warning("If you have already added this flag, then SIMD operations are not supported on your JVM or CPU.");
++			Bukkit.getLogger().warning("Debug: Java: " + System.getProperty("java.version") + ", test run: " + SIMDDetection.testRun);
++		}
++    }
++}
+\ No newline at end of file
+diff --git a/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..758fa97304a32bf17935c86dc03cbf50606935d8
+--- /dev/null
++++ b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java
+@@ -0,0 +1,32 @@
++package gg.pufferfish.pufferfish.simd;
++
++import java.util.logging.Logger;
++
++public class SIMDDetection {
++
++	public static boolean isEnabled = false;
++	public static boolean versionLimited = false;
++	public static boolean testRun = false;
++
++	public static boolean canEnable(Logger logger) {
++		try {
++			return SIMDChecker.canEnable(logger);
++		} catch (NoClassDefFoundError | Exception ignored) {
++			return false;
++		}
++	}
++
++	public static int getJavaVersion() {
++		// https://stackoverflow.com/a/2591122
++		String version = System.getProperty("java.version");
++		if(version.startsWith("1.")) {
++			version = version.substring(2, 3);
++		} else {
++			int dot = version.indexOf(".");
++			if(dot != -1) { version = version.substring(0, dot); }
++		}
++		version = version.split("-")[0]; // Azul is stupid
++		return Integer.parseInt(version);
++	}
++
++}
+\ No newline at end of file
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+index dcf8fd8ab06b10ecffae7332bc7e1a941b6a27a1..31397e53ab76266356c7582280d264c0f1df2504 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+@@ -225,6 +225,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
+             DedicatedServer.LOGGER.error("Unable to load server configuration", e);
+             return false;
+         }
++        gg.pufferfish.pufferfish.simd.SIMDChecker.simdWarning();
+         dev.kaiijumc.kaiiju.KaiijuConfig.registerCommands();
+         // Kaiiju end
+         com.destroystokyo.paper.VersionHistoryManager.INSTANCE.getClass(); // load version history now

patches/server/0017-Toggle-shared-random-for-players.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Thu, 11 May 2023 17:12:34 +0300
+Subject: [PATCH] Toggle shared random for players
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 2aa40f154c48ee7558b0efdc3bf26e205bb9f799..23b43de57a07b2b7b180f1aabd17e7e30830b521 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -214,8 +214,10 @@ public class KaiijuConfig {
+     }
+ 
+     public static String serverModName = "Kaiiju";
++    public static boolean sharedRandomForPlayers = true;
+ 
+     private static void gameplaySettings() {
+         serverModName = getString("gameplay.server-mod-name", serverModName);
++        sharedRandomForPlayers = getBoolean("gameplay.shared-random-for-players", sharedRandomForPlayers);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index e1b6673729e71bdc929bc7b76983108a59e55891..01d1360d7e3a31b985f24f825d304ae75a99814c 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -555,6 +555,11 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         this.bb = Entity.INITIAL_AABB;
+         this.stuckSpeedMultiplier = Vec3.ZERO;
+         this.nextStep = 1.0F;
++        // Kaiiju start - Toggle shared random for players
++        if (!dev.kaiijumc.kaiiju.KaiijuConfig.sharedRandomForPlayers && this instanceof Player)
++            this.random = RandomSource.create();
++        else
++        // Kaiiju end
+         this.random = SHARED_RANDOM; // Paper
+         this.remainingFireTicks = -this.getFireImmuneTicks();
+         this.fluidHeight = new Object2DoubleArrayMap(2);

patches/server/0018-Kick-player-instead-of-crashing.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 14 May 2023 18:50:57 +0300
+Subject: [PATCH] Kick player instead of crashing
+
+
+diff --git a/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java b/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
+index 07abf5a326cc7aa8a449b74bd7ac8a43b98528c0..eb875ee3d5bcbf90719eafc1c873189f1bfc26dd 100644
+--- a/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
++++ b/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
+@@ -484,7 +484,12 @@ public class RegionizedPlayerChunkLoader {
+                 PlayerChunkSender.sendChunk(this.player.connection, this.world, this.world.getChunkIfLoaded(chunkX, chunkZ));
+                 return;
+             }
+-            throw new IllegalStateException();
++            // Kaiiju - Kick player instead of crashing
++            String errorMsg = "Already sent chunk [" + chunkX + ", " + chunkZ + "] in world " + this.world;
++            this.player.getBukkitEntity().kickPlayer(errorMsg);
++            org.bukkit.Bukkit.getLogger().severe(errorMsg);
++            // throw new IllegalStateException();
++            // Kaiiju end
+         }
+ 
+         private void sendUnloadChunk(final int chunkX, final int chunkZ) {
+diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
+index 047e817eae19800d146970a3ab44913ea1d17c89..59858f2dc91ab50fff99f2f23eedfb99207b29cf 100644
+--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
++++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
+@@ -102,7 +102,12 @@ public class ChunkHolder {
+ 
+     public void addPlayer(ServerPlayer player) {
+         if (!this.playersSentChunkTo.add(player)) {
+-            throw new IllegalStateException("Already sent chunk " + this.pos + " in world '" + this.chunkMap.level.getWorld().getName() + "' to player " + player);
++            // Kaiiju start - Kick player instead of crashing
++            String errorMsg = "Already sent chunk " + this.pos + " in world " + this.chunkMap.level.getWorld().getName();
++            player.getBukkitEntity().kickPlayer(errorMsg);
++            org.bukkit.Bukkit.getLogger().severe(errorMsg);
++            //throw new IllegalStateException("Already sent chunk " + this.pos + " in world '" + this.chunkMap.level.getWorld().getName() + "' to player " + player);
++            // Kaiiju end
+         }
+     }
+ 

patches/server/0019-Toggle-fix-TripWire-state-inconsistency.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Thu, 18 May 2023 15:50:40 +0300
+Subject: [PATCH] Toggle fix TripWire state inconsistency
+
+This allow string duplication
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index e7ee85b09aa4438868e068551280b13e84cdfdb8..8d7821d8b1a3615eaef1073d9dab690559b85f81 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -158,9 +158,11 @@ public class KaiijuWorldConfig {
+ 
+     public boolean fixVoidTrading = true;
+     public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
++    public boolean fixTripWireStateInconsistency = true;
+ 
+     private void gameplaySettings() {
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+         breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
++        fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
+index cb2ff8d94308c637a498d2737f86f6af4c9c1b83..84c407dfd19924d12f1c25addbb613e607445fd9 100644
+--- a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
+@@ -78,7 +78,7 @@ public class TripWireBlock extends Block {
+     public void onRemove(BlockState state, Level world, BlockPos pos, BlockState newState, boolean moved) {
+         if (io.papermc.paper.configuration.GlobalConfiguration.get().blockUpdates.disableTripwireUpdates) return; // Paper - prevent adjacent tripwires from updating
+         if (!moved && !state.is(newState.getBlock())) {
+-            this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true), true); // Paper - fix state inconsistency
++            this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true), world.kaiijuConfig.fixTripWireStateInconsistency); // Paper - fix state inconsistency // Kaiiju - Toggle this
+         }
+     }
+ 

patches/server/0020-Entity-ticking-throttling-removal-to-prevent-lag.patch

@@ -0,0 +1,370 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Sun, 21 May 2023 15:55:04 +0200
+Subject: [PATCH] Entity ticking throttling & removal to prevent lag.
+
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index 5e79a464c912466952547cc294557821b6ff3576..6557a587f51f421b477557b17883578542fa1baf 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -23,6 +23,7 @@ dependencies {
+     implementation("com.github.luben:zstd-jni:1.5.4-1")
+     implementation("org.lz4:lz4-java:1.8.0")
+     // Kaiiju end
++    implementation("io.github.classgraph:classgraph:4.8.158") // Kaiiju - Entity throttling & Removal
+     // Paper start
+     implementation("org.jline:jline-terminal-jansi:3.21.0")
+     implementation("net.minecrell:terminalconsoleappender:1.3.0")
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuEntityLimits.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuEntityLimits.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..887ea85ca2a03796bfa5bf62f27d1a7abd7fbc29
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuEntityLimits.java
+@@ -0,0 +1,139 @@
++package dev.kaiijumc.kaiiju;
++
++import java.io.File;
++import java.io.IOException;
++import java.util.Map;
++import java.util.HashMap;
++import java.util.logging.Level;
++
++import com.google.common.base.Throwables;
++import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
++import io.github.classgraph.ClassGraph;
++import io.github.classgraph.ClassInfo;
++import io.github.classgraph.ScanResult;
++import org.slf4j.Logger;
++
++import com.mojang.logging.LogUtils;
++import net.minecraft.world.entity.Entity;
++import org.bukkit.Bukkit;
++import org.bukkit.configuration.InvalidConfigurationException;
++import org.bukkit.configuration.file.YamlConfiguration;
++
++@SuppressWarnings("unused")
++public class KaiijuEntityLimits {
++    private static final Logger LOGGER = LogUtils.getLogger();
++
++    protected static final String HEADER =
++        "Per region entity limits for Kaiiju.\n"
++        + "If there are more of particular entity type in a region than limit, entity ticking will be throttled.\n"
++        + "Example: for Wither limit 100 & 300 Withers in a region -> 100 Withers tick every tick & every Wither ticks every 3 ticks.\n"
++        + "Available entities: GlowSquid, Ambient, Bat, Animal, Bee, Cat, Chicken, Cod, Cow, Dolphin, Fish, FishSchool, Fox, Golem, IronGolem, "
++        + "MushroomCow, Ocelot, Panda, Parrot, Perchable, Pig, PolarBear, PufferFish, Rabbit, Salmon, Sheep, Snowman, Squid, TropicalFish, Turtle, "
++        + "WaterAnimal, Wolf, Allay, Axolotl, Camel, Frog, Tadpole, Goat, Horse, HorseAbstract, HorseChestedAbstract, HorseDonkey, HorseMule, "
++        + "HorseSkeleton, HorseZombie, Llama, LlamaTrader, Sniffer, EnderCrystal, EnderDragon, Wither, ArmorStand, Hanging, ItemFrame, Leash, "
++        + "Painting, GlowItemFrame, FallingBlock, Item, TNTPrimed, Blaze, CaveSpider, Creeper, Drowned, Enderman, Endermite, Evoker, Ghast, "
++        + "GiantZombie, Guardian, GuardianElder, IllagerAbstract, IllagerIllusioner, IllagerWizard, MagmaCube, Monster, MonsterPatrolling, Phantom, "
++        + "PigZombie, Pillager, Ravager, Shulker, Silverfish, Skeleton, SkeletonAbstract, SkeletonStray, SkeletonWither, Slime, Spider, Strider, Vex, "
++        + "Vindicator, Witch, Zoglin, Zombie, ZombieHusk, ZombieVillager, Hoglin, Piglin, PiglinAbstract, PiglinBrute, Warden, Villager, "
++        + "VillagerTrader, Arrow, DragonFireball, Egg, EnderPearl, EnderSignal, EvokerFangs, Fireball, FireballFireball, Fireworks, FishingHook, "
++        + "LargeFireball, LlamaSpit, Potion, Projectile, ProjectileThrowable, ShulkerBullet, SmallFireball, Snowball, SpectralArrow, ThrownExpBottle, "
++        + "ThrownTrident, TippedArrow, WitherSkull, Raider, ChestBoat, Boat, MinecartAbstract, MinecartChest, MinecartCommandBlock, MinecartContainer, "
++        + "MinecartFurnace, MinecartHopper, MinecartMobSpawner, MinecartRideable, MinecartTNT\n";
++    protected static File ENTITY_LIMITS_FILE;
++    public static YamlConfiguration entityLimitsConfig;
++
++    protected static Map<Class<? extends Entity>, EntityLimit> entityLimits;
++
++    static final String ENTITY_PREFIX = "Entity";
++
++    public static void init(File entityLimitsFile) {
++        init(entityLimitsFile, true);
++    }
++
++    public static void reload(File entityLimitsFile) {
++        init(entityLimitsFile, false);
++    }
++
++    private static void init(File entityLimitsFile, boolean setup) {
++        ENTITY_LIMITS_FILE = entityLimitsFile;
++        entityLimitsConfig = new YamlConfiguration();
++
++        if (entityLimitsFile.exists()) {
++            try {
++                entityLimitsConfig.load(ENTITY_LIMITS_FILE);
++            } catch (InvalidConfigurationException ex) {
++                Bukkit.getLogger().log(Level.SEVERE, "Could not load kaiiju_entity_limits.yml, please correct your syntax errors", ex);
++                throw Throwables.propagate(ex);
++            } catch (IOException ignore) {}
++        } else {
++            if (setup) {
++                entityLimitsConfig.options().header(HEADER);
++                entityLimitsConfig.options().copyDefaults(true);
++                entityLimitsConfig.set("Wither.limit", 1000);
++                entityLimitsConfig.set("Wither.removal", 5000);
++                entityLimitsConfig.set("Axolotl.limit", 1000);
++                entityLimitsConfig.set("Axolotl.removal", 5000);
++                try {
++                    entityLimitsConfig.save(ENTITY_LIMITS_FILE);
++                } catch (IOException ex) {
++                    Bukkit.getLogger().log(Level.SEVERE, "Could not save " + ENTITY_LIMITS_FILE, ex);
++                }
++            }
++        }
++
++        entityLimits = new Object2ObjectOpenHashMap<>();
++        try (ScanResult scanResult = new ClassGraph().enableAllInfo().acceptPackages("net.minecraft.world.entity").scan()) {
++            Map<String, ClassInfo> entityClasses = new HashMap<>();
++            for (ClassInfo classInfo : scanResult.getAllClasses()) {
++                Class<?> entityClass = Class.forName(classInfo.getName());
++                if (Entity.class.isAssignableFrom(entityClass)) {
++                    String entityName = extractEntityName(entityClass.getSimpleName());
++                    entityClasses.put(entityName, classInfo);
++                }
++            }
++
++            for (String key : entityLimitsConfig.getKeys(false)) {
++                if (!entityClasses.containsKey(key)) {
++                    LOGGER.error("Unknown entity '" + key + "' in kaiiju-entity-limits.yml, skipping");
++                    continue;
++                }
++                int limit = entityLimitsConfig.getInt(key + ".limit");
++                int removal = entityLimitsConfig.getInt(key + ".removal");
++
++                if (limit < 1) {
++                    LOGGER.error(key + " has a limit less than the minimum of 1, ignoring");
++                    continue;
++                }
++                if (removal <= limit && removal != -1) {
++                    LOGGER.error(key + " has a removal limit that is less than or equal to its limit, setting removal to limit * 10");
++                    removal = limit * 10;
++                }
++
++                entityLimits.put((Class<? extends Entity>) Class.forName(entityClasses.get(key).getName()), new EntityLimit(limit, removal));
++            }
++        } catch (ClassNotFoundException e) {
++            e.printStackTrace();
++        }
++    }
++
++    public static EntityLimit getEntityLimit(Entity entity) {
++        return entityLimits.get(entity.getClass());
++    }
++
++    private static String extractEntityName(String input) {
++        int prefixLength = ENTITY_PREFIX.length();
++
++        if (input.length() <= prefixLength || !input.startsWith(ENTITY_PREFIX)) {
++            return input;
++        } else {
++            return input.substring(prefixLength);
++        }
++    }
++
++    public record EntityLimit(int limit, int removal) {
++        @Override
++        public String toString() {
++            return "EntityLimit{limit=" + limit + ", removal=" + removal + "}";
++        }
++    }
++}
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuEntityThrottler.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuEntityThrottler.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..eb690efacf083e4ff3e321578b12c534e6a40196
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuEntityThrottler.java
+@@ -0,0 +1,84 @@
++package dev.kaiijumc.kaiiju;
++
++import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
++import net.minecraft.world.entity.Entity;
++import io.papermc.paper.threadedregions.RegionizedWorldData;
++
++public class KaiijuEntityThrottler {
++    private static class TickInfo {
++        int currentTick;
++        int continueFrom;
++        int toTick;
++        int toRemove;
++    }
++
++    public static class EntityThrottlerReturn {
++        public boolean skip;
++        public boolean remove;
++    }
++
++    private final Object2ObjectOpenHashMap<KaiijuEntityLimits.EntityLimit, TickInfo> entityLimitTickInfoMap = new Object2ObjectOpenHashMap<>();
++
++    public void tickLimiterStart() {
++        for (TickInfo tickInfo : entityLimitTickInfoMap.values()) {
++            tickInfo.currentTick = 0;
++        }
++    }
++
++    public EntityThrottlerReturn tickLimiterShouldSkip(Entity entity) {
++        EntityThrottlerReturn retVal = new EntityThrottlerReturn();
++        if (entity.isRemoved()) return retVal;
++        KaiijuEntityLimits.EntityLimit entityLimit = KaiijuEntityLimits.getEntityLimit(entity);
++
++        if (entityLimit != null) {
++            TickInfo tickInfo = entityLimitTickInfoMap.computeIfAbsent(entityLimit, el -> {
++                TickInfo newTickInfo = new TickInfo();
++                newTickInfo.toTick = entityLimit.limit();
++                return newTickInfo;
++            });
++
++            tickInfo.currentTick++;
++            if (tickInfo.currentTick <= tickInfo.toRemove && entityLimit.removal() > 0) {
++                retVal.skip = false;
++                retVal.remove = true;
++                return retVal;
++            }
++
++            if (tickInfo.currentTick < tickInfo.continueFrom) {
++                retVal.skip = true;
++                return retVal;
++            }
++            if (tickInfo.currentTick - tickInfo.continueFrom < tickInfo.toTick) {
++                retVal.skip = false;
++                return retVal;
++            }
++            retVal.skip = true;
++            return retVal;
++        } else {
++            retVal.skip = false;
++            return retVal;
++        }
++    }
++
++    public void tickLimiterFinish(RegionizedWorldData regionizedWorldData) {
++        for (var entry : entityLimitTickInfoMap.entrySet()) {
++            KaiijuEntityLimits.EntityLimit entityLimit = entry.getKey();
++            TickInfo tickInfo = entry.getValue();
++
++            int additionals = 0;
++            int nextContinueFrom = tickInfo.continueFrom + tickInfo.toTick;
++            if (nextContinueFrom >= tickInfo.currentTick) {
++                additionals = entityLimit.limit() - (tickInfo.currentTick - tickInfo.continueFrom);
++                nextContinueFrom = 0;
++            }
++            tickInfo.continueFrom = nextContinueFrom;
++            tickInfo.toTick = entityLimit.limit() + additionals;
++
++            if (tickInfo.toRemove == 0 && tickInfo.currentTick > entityLimit.removal()) {
++                tickInfo.toRemove = tickInfo.currentTick - entityLimit.removal();
++            } else if (tickInfo.toRemove != 0) {
++                tickInfo.toRemove = 0;
++            }
++        }
++    }
++}
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 8d7821d8b1a3615eaef1073d9dab690559b85f81..816db23fa64aab69e3034484c00645ebd0479978 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -149,11 +149,13 @@ public class KaiijuWorldConfig {
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean optimizeHoppers = true;
+     public boolean tickWhenEmpty = true;
++    public boolean enableEntityThrottling = false;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
+         tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
++        enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
+     }
+ 
+     public boolean fixVoidTrading = true;
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java b/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java
+index 6fac162e0ec057af9f3336314d5663554cef0490..efecc7e132c67577577c99bfcf98e2b4ddae14ab 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/command/KaiijuCommand.java
+@@ -1,6 +1,7 @@
+ package dev.kaiijumc.kaiiju.command;
+ 
+ import dev.kaiijumc.kaiiju.KaiijuConfig;
++import dev.kaiijumc.kaiiju.KaiijuEntityLimits;
+ import net.minecraft.server.MinecraftServer;
+ import net.minecraft.server.level.ServerLevel;
+ import net.md_5.bungee.api.ChatColor;
+@@ -48,6 +49,7 @@ public class KaiijuCommand extends Command {
+ 
+             MinecraftServer console = MinecraftServer.getServer();
+             KaiijuConfig.reload((File) console.options.valueOf("kaiiju-settings"));
++            KaiijuEntityLimits.reload((File) console.options.valueOf("kaiiju-entity-limits"));
+             for (ServerLevel level : console.getAllLevels()) {
+                 level.kaiijuConfig.reload();
+             }
+diff --git a/src/main/java/io/papermc/paper/threadedregions/RegionizedWorldData.java b/src/main/java/io/papermc/paper/threadedregions/RegionizedWorldData.java
+index 7ca275826609bcf96f103a8c50beaa47c3b4068b..e895fad608e3a166cf9c800f16edb59bf9a42947 100644
+--- a/src/main/java/io/papermc/paper/threadedregions/RegionizedWorldData.java
++++ b/src/main/java/io/papermc/paper/threadedregions/RegionizedWorldData.java
+@@ -331,6 +331,7 @@ public final class RegionizedWorldData {
+     private final ReferenceList<Entity> toProcessTrackingUnloading = new ReferenceList<>();
+     private final IteratorSafeOrderedReferenceSet<Entity> entityTickList = new IteratorSafeOrderedReferenceSet<>();
+     private final IteratorSafeOrderedReferenceSet<Mob> navigatingMobs = new IteratorSafeOrderedReferenceSet<>();
++    public final dev.kaiijumc.kaiiju.KaiijuEntityThrottler entityThrottler = new dev.kaiijumc.kaiiju.KaiijuEntityThrottler(); // Kaiiju
+ 
+     // block ticking
+     private final ObjectLinkedOpenHashSet<BlockEventData> blockEvents = new ObjectLinkedOpenHashSet<>();
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+index 31397e53ab76266356c7582280d264c0f1df2504..4d077e459f385f86a0f35dd72d4fdc3a37961da9 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+@@ -225,6 +225,12 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
+             DedicatedServer.LOGGER.error("Unable to load server configuration", e);
+             return false;
+         }
++        try {
++            dev.kaiijumc.kaiiju.KaiijuEntityLimits.init((java.io.File) options.valueOf("kaiiju-entity-limits"));
++        } catch (Exception e) {
++            DedicatedServer.LOGGER.error("Unable to load entity limits", e);
++            return false;
++        }
+         gg.pufferfish.pufferfish.simd.SIMDChecker.simdWarning();
+         dev.kaiijumc.kaiiju.KaiijuConfig.registerCommands();
+         // Kaiiju end
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index ca065f1600713a7f509e54580c625287e94d1e40..6a3964d3120dfd98c7a434dc86e221aeebcb0145 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -968,6 +968,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                 } finally { profiler.stopTimer(ca.spottedleaf.leafprofiler.LProfilerRegistry.DRAGON_FIGHT_TICK); } // Folia - profiler
+             }
+ 
++            if (kaiijuConfig.enableEntityThrottling) regionizedWorldData.entityThrottler.tickLimiterStart(); // Kaiiju
+             org.spigotmc.ActivationRange.activateEntities(this); // Spigot
+             timings.entityTick.startTiming(); // Spigot
+             profiler.startTimer(ca.spottedleaf.leafprofiler.LProfilerRegistry.ENTITY_TICK); try { // Folia - profiler
+@@ -991,6 +992,13 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                                 entity.stopRiding();
+                             }
+ 
++                            // Kaiiju start
++                            if (kaiijuConfig.enableEntityThrottling) {
++                                dev.kaiijumc.kaiiju.KaiijuEntityThrottler.EntityThrottlerReturn throttle = regionizedWorldData.entityThrottler.tickLimiterShouldSkip(entity);
++                                if (throttle.remove && !entity.hasCustomName()) entity.remove(Entity.RemovalReason.DISCARDED);
++                                if (throttle.skip) return;
++                            }
++                            // Kaiiju end
+                             gameprofilerfiller.push("tick");
+                             this.guardEntityTick(this::tickNonPassenger, entity);
+                             gameprofilerfiller.pop();
+@@ -999,6 +1007,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                 }
+             });
+             } finally { profiler.stopTimer(ca.spottedleaf.leafprofiler.LProfilerRegistry.ENTITY_TICK); } // Folia - profiler
++            if (kaiijuConfig.enableEntityThrottling) regionizedWorldData.entityThrottler.tickLimiterFinish(regionizedWorldData); // Kaiiju
+             timings.entityTick.stopTiming(); // Spigot
+             timings.tickEntities.stopTiming(); // Spigot
+             gameprofilerfiller.pop();
+diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
+index d29fe7ac0c68b2d57a0c6b6d06bbb4436bfc4c14..b0e08392520fe21ef7b2dd66272da68411887223 100644
+--- a/src/main/java/org/bukkit/craftbukkit/Main.java
++++ b/src/main/java/org/bukkit/craftbukkit/Main.java
+@@ -179,6 +179,11 @@ public class Main {
+                     .ofType(File.class)
+                     .defaultsTo(new File("kaiiju.yml"))
+                     .describedAs("Yml file");
++                acceptsAll(asList("kaiiju", "kaiiju-entity-limits"), "File for kaiiju's entity limits")
++                    .withRequiredArg()
++                    .ofType(File.class)
++                    .defaultsTo(new File("kaiiju-entity-limits.yml"))
++                    .describedAs("Yml file");
+                 // Purpur end
+ 
+                 // Paper start

patches/server/0021-Toggle-safe-teleportation.patch

@@ -0,0 +1,53 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Thu, 18 May 2023 20:05:49 +0300
+Subject: [PATCH] Toggle safe teleportation
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 816db23fa64aab69e3034484c00645ebd0479978..7c6c74f95c2534624a928ccf6b0a4b9d2a5486ad 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -161,10 +161,12 @@ public class KaiijuWorldConfig {
+     public boolean fixVoidTrading = true;
+     public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
+     public boolean fixTripWireStateInconsistency = true;
++    public boolean safeTeleporting = true;
+ 
+     private void gameplaySettings() {
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+         breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
++        safeTeleporting = getBoolean("gameplay.safe-teleportation", safeTeleporting);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 01d1360d7e3a31b985f24f825d304ae75a99814c..f1f7a9b358eed87279f46eb49729214aaa8df6b3 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -4015,6 +4015,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+ 
+     protected boolean tryEndPortal() {
+         io.papermc.paper.util.TickThread.ensureTickThread(this, "Cannot portal entity async");
++        if (!this.level.kaiijuConfig.safeTeleporting && !(this instanceof net.minecraft.world.entity.player.Player)) return false; // Kaiiju - Unsafe teleportation
+         BlockPos pos = this.portalBlock;
+         ServerLevel world = this.portalWorld;
+         this.portalBlock = null;
+diff --git a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
+index 41d7cff39fc37955877668337689b4b26cd8c7cf..fe21ef0a2c451564694de915f6f4e61dbfeed712 100644
+--- a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
+@@ -53,6 +53,13 @@ public class EndPortalBlock extends BaseEntityBlock {
+                 // return; // CraftBukkit - always fire event in case plugins wish to change it
+             }
+ 
++            // Kaiiju start - Unsafe teleportation
++            if (!entity.level().kaiijuConfig.safeTeleporting && !(entity instanceof net.minecraft.world.entity.player.Player)) {
++                entity.endPortalLogicAsync();
++                return;
++            }
++            // Kaiiju end
++
+             // Paper start - move all of this logic into portal tick
+             entity.portalWorld = ((ServerLevel)world);
+             entity.portalBlock = pos.immutable();

patches/server/0022-Toggle-sand-duplication.patch

@@ -0,0 +1,46 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 28 May 2023 01:51:52 +0300
+Subject: [PATCH] Toggle sand duplication
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 7c6c74f95c2534624a928ccf6b0a4b9d2a5486ad..9f0095f2196133a8bcffd5306aa9ac0b99b2f8d7 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -162,11 +162,13 @@ public class KaiijuWorldConfig {
+     public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
+     public boolean fixTripWireStateInconsistency = true;
+     public boolean safeTeleporting = true;
++    public boolean sandDuplication = false;
+ 
+     private void gameplaySettings() {
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+         breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
+         safeTeleporting = getBoolean("gameplay.safe-teleportation", safeTeleporting);
++        sandDuplication = getBoolean("gameplay.sand-duplication", sandDuplication);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+index 31b59d7d439dbbd79605e5d078cbc9131b786ad9..629b12dbf855b6faa23a2fdf876cfd49e9228dc3 100644
+--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
++++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+@@ -133,7 +133,7 @@ public class FallingBlockEntity extends Entity {
+     @Override
+     public void tick() {
+         // Paper start - fix sand duping
+-        if (this.isRemoved()) {
++        if (!this.level().kaiijuConfig.sandDuplication && this.isRemoved()) { // Kaiiju - Toggle sand duplication
+             return;
+         }
+         // Paper end - fix sand duping
+@@ -150,7 +150,7 @@ public class FallingBlockEntity extends Entity {
+             this.move(MoverType.SELF, this.getDeltaMovement());
+ 
+             // Paper start - fix sand duping
+-            if (this.isRemoved()) {
++            if (!this.level().kaiijuConfig.sandDuplication && this.isRemoved()) { // Kaiiju - Toggle sand duplication
+                 return;
+             }
+             // Paper end - fix sand duping

patches/server/0023-Vanilla-end-portal-teleportation.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Fri, 19 May 2023 03:38:03 +0300
+Subject: [PATCH] Vanilla end portal teleportation
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index f1f7a9b358eed87279f46eb49729214aaa8df6b3..3dc840bf74e12a9e757a2adaa1d0b22d68ac3d26 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -4101,12 +4101,17 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                         targetPos, 16, // load 16 blocks to be safe from block physics
+                         ca.spottedleaf.concurrentutil.executor.standard.PrioritisedExecutor.Priority.HIGH,
+                         (chunks) -> {
+-                            ServerLevel.makeObsidianPlatform(destination, null, targetPos);
++                            //ServerLevel.makeObsidianPlatform(destination, null, targetPos); // Kaiiju - Vanilla end teleportation - moved down
+ 
++                            // Kaiiju start - Vanilla end teleportation
++                            Vec3 finalPos;
++                            if (this instanceof Player) finalPos = Vec3.atBottomCenterOf(targetPos.below());
++                            else finalPos = Vec3.atBottomCenterOf(targetPos);
++                            // Kaiiju end
+                             // the portal obsidian is placed at targetPos.y - 2, so if we want to place the entity
+                             // on the obsidian, we need to spawn at targetPos.y - 1
+                             portalInfoCompletable.complete(
+-                                new PortalInfo(Vec3.atBottomCenterOf(targetPos.below()), Vec3.ZERO, 90.0f, 0.0f, destination, null)
++                                new PortalInfo(finalPos, this.getDeltaMovement(), 90.0f, 0.0f, destination, null) // Kaiiju - Vanilla end teleportation
+                             );
+                         }
+                     );
+@@ -4293,6 +4298,10 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         if (!this.canPortalAsync(takePassengers)) {
+             return false;
+         }
++        // Kaiiju start - sync end platform spawning & entity teleportation
++        final java.util.function.Consumer<Entity> tpComplete = type == PortalType.END && destination.getTypeKey() == LevelStem.END ?
++              e -> ServerLevel.makeObsidianPlatform(destination, null, ServerLevel.END_SPAWN_POINT) : teleportComplete;
++        // Kaiiju end
+ 
+         Vec3 initialPosition = this.position();
+         ChunkPos initialPositionChunk = new ChunkPos(
+@@ -4351,7 +4360,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+             // place
+             passengerTree.root.placeInAsync(
+                 originWorld, destination, Entity.TELEPORT_FLAG_LOAD_CHUNK | (takePassengers ? Entity.TELEPORT_FLAG_TELEPORT_PASSENGERS : 0L),
+-                passengerTree, teleportComplete
++                passengerTree, tpComplete // Kaiiju - vanilla end teleportation
+             );
+         });
+ 

patches/server/0024-Use-Math.floor-instead-of-fastfloor.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Sat, 17 Jun 2023 21:03:04 +0300
+Subject: [PATCH] Use Math.floor instead of fastfloor
+
+
+diff --git a/src/main/java/io/papermc/paper/util/MCUtil.java b/src/main/java/io/papermc/paper/util/MCUtil.java
+index 2d6fc460c850c6d515794d2fa29324a448a985d1..d86355506a216389642d00bc0e0c6718ee2d0486 100644
+--- a/src/main/java/io/papermc/paper/util/MCUtil.java
++++ b/src/main/java/io/papermc/paper/util/MCUtil.java
+@@ -166,13 +166,19 @@ public final class MCUtil {
+     }
+ 
+     public static int fastFloor(double x) {
+-        int truncated = (int)x;
+-        return x < (double)truncated ? truncated - 1 : truncated;
++        // Kaiiju start - Use Math.floor instead of fastfloor
++        return (int)Math.floor(x); // Kaiiju
++        //int truncated = (int)x;
++        //return x < (double)truncated ? truncated - 1 : truncated;
++        // Kaiiju end
+     }
+ 
+     public static int fastFloor(float x) {
+-        int truncated = (int)x;
+-        return x < (double)truncated ? truncated - 1 : truncated;
++        // Kaiiju start - Use Math.floor instead of fastfloor
++        return (int)Math.floor(x); // Kaiiju
++        //int truncated = (int)x;
++        //return x < (double)truncated ? truncated - 1 : truncated;
++        // Kaiiju end
+     }
+ 
+     public static float normalizeYaw(float f) {

patches/server/0025-Allow-user-to-enable-moving-into-unloaded-chunks.patch

@@ -0,0 +1,27 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 18 Jun 2023 18:10:19 +0300
+Subject: [PATCH] Allow user to enable moving into unloaded chunks
+
+
+diff --git a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
+index 1e3ae1cb466b4757ce7fc0bd0201190230756bcc..8cf64c784d1768275b94fd1e4125c7c8742b3d5d 100644
+--- a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
++++ b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
+@@ -473,14 +473,14 @@ public class WorldConfiguration extends ConfigurationPart {
+         // Folia start - region threading - force prevent moving into unloaded chunks
+         @PostProcess
+         public void postProcess() {
+-            this.preventMovingIntoUnloadedChunks = true;
++            //this.preventMovingIntoUnloadedChunks = true; // Kaiiju - Don't
+         }
+         // Folia end - region threading - force prevent moving into unloaded chunks
+ 
+         public AutosavePeriod autoSaveInterval = AutosavePeriod.def();
+         public int maxAutoSaveChunksPerTick = 24;
+         public int fixedChunkInhabitedTime = -1;
+-        public boolean preventMovingIntoUnloadedChunks = false;
++        public boolean preventMovingIntoUnloadedChunks = true; // Kaiiju - True not False
+         public Duration delayChunkUnloadsBy = Duration.of("10s");
+         public Reference2IntMap<EntityType<?>> entityPerChunkSaveLimit = Util.make(new Reference2IntOpenHashMap<>(BuiltInRegistries.ENTITY_TYPE.size()), map -> {
+             map.defaultReturnValue(-1);

patches/server/0026-Don-t-pathfind-outside-region.patch

@@ -0,0 +1,20 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Mon, 19 Jun 2023 01:49:00 +0300
+Subject: [PATCH] Don't pathfind outside region
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/MoveToTargetSink.java b/src/main/java/net/minecraft/world/entity/ai/behavior/MoveToTargetSink.java
+index 1ab77f3518d1df30f66ae44d7d4fa69e5b32d93a..98bf17441da3169d49de55fe89d79ebe250a2b7e 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/behavior/MoveToTargetSink.java
++++ b/src/main/java/net/minecraft/world/entity/ai/behavior/MoveToTargetSink.java
+@@ -107,7 +107,9 @@ public class MoveToTargetSink extends Behavior<Mob> {
+ 
+     private boolean tryComputePath(Mob entity, WalkTarget walkTarget, long time) {
+         BlockPos blockPos = walkTarget.getTarget().currentBlockPosition();
++        if (io.papermc.paper.util.TickThread.isTickThreadFor((ServerLevel) entity.level(), blockPos)) // Kaiiju - Don't pathfind outside region
+         this.path = entity.getNavigation().createPath(blockPos, 0);
++        else this.path = null; // Kaiiju - Don't pathfind outside region
+         this.speedModifier = walkTarget.getSpeedModifier();
+         Brain<?> brain = entity.getBrain();
+         if (this.reachedTarget(entity, walkTarget)) {

patches/server/0027-Don-t-spam-recipe-changes-on-update.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Mon, 19 Jun 2023 21:30:19 +0300
+Subject: [PATCH] Don't spam recipe changes on update
+
+
+diff --git a/src/main/java/net/minecraft/server/PlayerAdvancements.java b/src/main/java/net/minecraft/server/PlayerAdvancements.java
+index e38e2e5a7ddba9c140f362021b6be0b0974f7cd1..4cb589f03a7652238e70a9ef76c8cafd84ecc5d6 100644
+--- a/src/main/java/net/minecraft/server/PlayerAdvancements.java
++++ b/src/main/java/net/minecraft/server/PlayerAdvancements.java
+@@ -200,7 +200,7 @@ public class PlayerAdvancements {
+ 
+             if (advancementholder == null) {
+                 if (!minecraftkey.getNamespace().equals("minecraft")) return; // CraftBukkit
+-                PlayerAdvancements.LOGGER.warn("Ignored advancement '{}' in progress file {} - it doesn't exist anymore?", minecraftkey, this.playerSavePath);
++                //PlayerAdvancements.LOGGER.warn("Ignored advancement '{}' in progress file {} - it doesn't exist anymore?", minecraftkey, this.playerSavePath); // Kaiiju - We already know, don't spam.
+             } else {
+                 this.startProgress(advancementholder, advancementprogress);
+                 this.progressChanged.add(advancementholder);
+diff --git a/src/main/java/net/minecraft/stats/ServerRecipeBook.java b/src/main/java/net/minecraft/stats/ServerRecipeBook.java
+index 4103ddf16164e3992fef0765d368282572537e29..fe69cd06457ada65ced4ee32b815360a435e6c55 100644
+--- a/src/main/java/net/minecraft/stats/ServerRecipeBook.java
++++ b/src/main/java/net/minecraft/stats/ServerRecipeBook.java
+@@ -125,7 +125,7 @@ public class ServerRecipeBook extends RecipeBook {
+                 Optional<RecipeHolder<?>> optional = recipeManager.byKey(minecraftkey);
+ 
+                 if (optional.isEmpty()) {
+-                    ServerRecipeBook.LOGGER.error("Tried to load unrecognized recipe: {} removed now.", minecraftkey);
++                    //ServerRecipeBook.LOGGER.error("Tried to load unrecognized recipe: {} removed now.", minecraftkey); // Kaiiju - We already know, don't spam.
+                 } else {
+                     handler.accept((RecipeHolder) optional.get());
+                 }

patches/server/0028-Option-to-disable-vanish-api.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:14:47 +0200
+Subject: [PATCH] Option to disable vanish api
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 23b43de57a07b2b7b180f1aabd17e7e30830b521..59b41c29f42072ec2d3ba03b09e0ead897800ee1 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -210,7 +210,10 @@ public class KaiijuConfig {
+         sendNullEntityPackets = getBoolean("network.send-null-entity-packets", sendNullEntityPackets);
+     }
+ 
++    public static boolean disableVanishApi = false;
++
+     private static void optimizationSettings() {
++        disableVanishApi = getBoolean("optimization.disable-vanish-api", disableVanishApi);
+     }
+ 
+     public static String serverModName = "Kaiiju";
+diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
+index 04e249699e1c1a82d4c94b94b815ffa8fd97a99e..fbb0723ebd7dfef04252de694dc29b979c563452 100644
+--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
++++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
+@@ -1376,7 +1376,11 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+                 // Folia end - region threading
+ 
+                 // CraftBukkit start - respect vanish API
+-                if (flag && (!io.papermc.paper.util.TickThread.isTickThreadFor(player) || !player.getBukkitEntity().canSee(this.entity.getBukkitEntity()))) { // Folia - region threading
++                // Kaiiju start - don't respect vanish API >:D
++                boolean canSee = true;
++                if (flag && !dev.kaiijumc.kaiiju.KaiijuConfig.disableVanishApi) canSee = player.getBukkitEntity().canSee(this.entity.getBukkitEntity());
++                if (!io.papermc.paper.util.TickThread.isTickThreadFor(player) || !canSee) { // Folia - region threading
++                // Kaiiju end
+                     flag = false;
+                 }
+                 // CraftBukkit end

patches/server/0029-Option-to-disable-player-stats.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:17:57 +0200
+Subject: [PATCH] Option to disable player stats
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 59b41c29f42072ec2d3ba03b09e0ead897800ee1..b11a329ead2347917d24d932c9a1a826d288f5b6 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -211,9 +211,11 @@ public class KaiijuConfig {
+     }
+ 
+     public static boolean disableVanishApi = false;
++    public static boolean disablePlayerStats = false;
+ 
+     private static void optimizationSettings() {
+         disableVanishApi = getBoolean("optimization.disable-vanish-api", disableVanishApi);
++        disablePlayerStats = getBoolean("optimization.disable-player-stats", disablePlayerStats);
+     }
+ 
+     public static String serverModName = "Kaiiju";
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index 42ff3d94ee451ced69c1059f0dbd45085489a60d..374dc5fd0ad15ace5314f2b9c675d1770a43f45a 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -2144,6 +2144,7 @@ public class ServerPlayer extends Player {
+ 
+     @Override
+     public void awardStat(Stat<?> stat, int amount) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disablePlayerStats) return; // Kaiiju - Disable player stats
+         this.stats.increment(this, stat, amount);
+         this.level().getCraftServer().getScoreboardManager().getScoreboardScores(stat, this.getScoreboardName(), (scoreboardscore) -> { // CraftBukkit - Get our scores instead
+             scoreboardscore.add(amount);

patches/server/0030-Option-to-disable-achievements.patch

@@ -0,0 +1,175 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:32:36 +0200
+Subject: [PATCH] Option to disable achievements
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 9f0095f2196133a8bcffd5306aa9ac0b99b2f8d7..31d66bb2fcf4bb7262df2d8006e307fee92660ea 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -150,12 +150,14 @@ public class KaiijuWorldConfig {
+     public boolean optimizeHoppers = true;
+     public boolean tickWhenEmpty = true;
+     public boolean enableEntityThrottling = false;
++    public boolean disableAchievements = false;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
+         tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
+         enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
++        disableAchievements = getBoolean("optimization.disable-achievements", disableAchievements);
+     }
+ 
+     public boolean fixVoidTrading = true;
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index 374dc5fd0ad15ace5314f2b9c675d1770a43f45a..0a65f35f247a39e89d64721499162b419475da4f 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -800,7 +800,7 @@ public class ServerPlayer extends Player {
+ 
+     @Override
+     protected void onInsideBlock(BlockState state) {
+-        CriteriaTriggers.ENTER_BLOCK.trigger(this, state);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.ENTER_BLOCK.trigger(this, state); // Kaiiju
+     }
+ 
+     @Override
+@@ -847,9 +847,9 @@ public class ServerPlayer extends Player {
+             }
+         }
+ 
+-        CriteriaTriggers.TICK.trigger(this);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.TICK.trigger(this); // Kaiiju
+         if (this.levitationStartPos != null) {
+-            CriteriaTriggers.LEVITATION.trigger(this, this.levitationStartPos, this.tickCount - this.levitationStartTime);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.LEVITATION.trigger(this, this.levitationStartPos, this.tickCount - this.levitationStartTime); // Kaiiju
+         }
+ 
+         this.trackStartFallingPosition();
+@@ -924,7 +924,7 @@ public class ServerPlayer extends Player {
+             }
+ 
+             if (this.tickCount % 20 == 0) {
+-                CriteriaTriggers.LOCATION.trigger(this);
++                if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.LOCATION.trigger(this); // Kaiiju
+             }
+ 
+             // CraftBukkit start - initialize oldLevel, fire PlayerLevelChangeEvent, and tick client-sided world border
+@@ -953,7 +953,7 @@ public class ServerPlayer extends Player {
+     @Override
+     public void resetFallDistance() {
+         if (this.getHealth() > 0.0F && this.startingToFallPosition != null) {
+-            CriteriaTriggers.FALL_FROM_HEIGHT.trigger(this, this.startingToFallPosition);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.FALL_FROM_HEIGHT.trigger(this, this.startingToFallPosition); // Kaiiju
+         }
+ 
+         this.startingToFallPosition = null;
+@@ -972,7 +972,7 @@ public class ServerPlayer extends Player {
+             if (this.enteredLavaOnVehiclePosition == null) {
+                 this.enteredLavaOnVehiclePosition = this.position();
+             } else {
+-                CriteriaTriggers.RIDE_ENTITY_IN_LAVA_TRIGGER.trigger(this, this.enteredLavaOnVehiclePosition);
++                if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.RIDE_ENTITY_IN_LAVA_TRIGGER.trigger(this, this.enteredLavaOnVehiclePosition); // Kaiiju
+             }
+         }
+ 
+@@ -1176,7 +1176,7 @@ public class ServerPlayer extends Player {
+ 
+             this.handleTeamKill(s, s1, ObjectiveCriteria.TEAM_KILL);
+             this.handleTeamKill(s1, s, ObjectiveCriteria.KILLED_BY_TEAM);
+-            CriteriaTriggers.PLAYER_KILLED_ENTITY.trigger(this, entityKilled, damageSource);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.PLAYER_KILLED_ENTITY.trigger(this, entityKilled, damageSource); // Kaiiju
+         }
+     }
+ 
+@@ -1294,7 +1294,7 @@ public class ServerPlayer extends Player {
+         this.wonGame = false;
+ 
+         this.respawn((player) -> {
+-            CriteriaTriggers.CHANGED_DIMENSION.trigger(player, Level.END, Level.OVERWORLD);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.CHANGED_DIMENSION.trigger(player, Level.END, Level.OVERWORLD); // Kaiiju
+         }, true);
+     }
+ 
+@@ -1788,14 +1788,14 @@ public class ServerPlayer extends Player {
+             maindimensionkey1 = resourcekey1;
+         }
+         // Paper end
+-        CriteriaTriggers.CHANGED_DIMENSION.trigger(this, maindimensionkey, maindimensionkey1);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.CHANGED_DIMENSION.trigger(this, maindimensionkey, maindimensionkey1); // Kaiiju
+         if (maindimensionkey != resourcekey || maindimensionkey1 != resourcekey1) {
+-            CriteriaTriggers.CHANGED_DIMENSION.trigger(this, resourcekey, resourcekey1);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.CHANGED_DIMENSION.trigger(this, resourcekey, resourcekey1); // Kaiiju
+         }
+ 
+         if (maindimensionkey == Level.NETHER && maindimensionkey1 == Level.OVERWORLD && this.enteredNetherPosition != null) {
+             // CraftBukkit end
+-            CriteriaTriggers.NETHER_TRAVEL.trigger(this, this.enteredNetherPosition);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.NETHER_TRAVEL.trigger(this, this.enteredNetherPosition); // Kaiiju
+         }
+ 
+         if (maindimensionkey1 != Level.NETHER) { // CraftBukkit
+@@ -1873,7 +1873,7 @@ public class ServerPlayer extends Player {
+                 {
+                     Either<Player.BedSleepingProblem, Unit> either = super.startSleepInBed(blockposition, force).ifRight((unit) -> {
+                         this.awardStat(Stats.SLEEP_IN_BED);
+-                        CriteriaTriggers.SLEPT_IN_BED.trigger(this);
++                        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.SLEPT_IN_BED.trigger(this); // Kaiiju
+                     });
+ 
+                     if (!this.serverLevel().canSleepThroughNights()) {
+@@ -2164,7 +2164,7 @@ public class ServerPlayer extends Player {
+ 
+     @Override
+     public void triggerRecipeCrafted(RecipeHolder<?> recipe, List<ItemStack> ingredients) {
+-        CriteriaTriggers.RECIPE_CRAFTED.trigger(this, recipe.id(), ingredients);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.RECIPE_CRAFTED.trigger(this, recipe.id(), ingredients); // Kaiiju
+     }
+ 
+     @Override
+@@ -2293,14 +2293,14 @@ public class ServerPlayer extends Player {
+             this.levitationStartPos = this.position();
+         }
+ 
+-        CriteriaTriggers.EFFECTS_CHANGED.trigger(this, source);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.EFFECTS_CHANGED.trigger(this, source); // Kaiiju
+     }
+ 
+     @Override
+     protected void onEffectUpdated(MobEffectInstance effect, boolean reapplyEffect, @Nullable Entity source) {
+         super.onEffectUpdated(effect, reapplyEffect, source);
+         this.connection.send(new ClientboundUpdateMobEffectPacket(this.getId(), effect));
+-        CriteriaTriggers.EFFECTS_CHANGED.trigger(this, source);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.EFFECTS_CHANGED.trigger(this, source); // Kaiiju
+     }
+ 
+     @Override
+@@ -2311,7 +2311,7 @@ public class ServerPlayer extends Player {
+             this.levitationStartPos = null;
+         }
+ 
+-        CriteriaTriggers.EFFECTS_CHANGED.trigger(this, (Entity) null);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.EFFECTS_CHANGED.trigger(this, (Entity) null); // Kaiiju
+     }
+ 
+     @Override
+@@ -2856,7 +2856,7 @@ public class ServerPlayer extends Player {
+ 
+     @Override
+     protected void updateUsingItem(ItemStack stack) {
+-        CriteriaTriggers.USING_ITEM.trigger(this, stack);
++        if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.USING_ITEM.trigger(this, stack); // Kaiiju
+         super.updateUsingItem(stack);
+     }
+ 
+@@ -2885,7 +2885,7 @@ public class ServerPlayer extends Player {
+         Entity entity = item.getOwner();
+ 
+         if (entity != null) {
+-            CriteriaTriggers.THROWN_ITEM_PICKED_UP_BY_PLAYER.trigger(this, item.getItem(), entity);
++            if (!this.level().kaiijuConfig.disableAchievements) CriteriaTriggers.THROWN_ITEM_PICKED_UP_BY_PLAYER.trigger(this, item.getItem(), entity); // Kaiiju
+         }
+ 
+     }

patches/server/0031-Option-to-disable-arm-swing-event.patch

@@ -0,0 +1,43 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:37:27 +0200
+Subject: [PATCH] Option to disable arm swing event
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index b11a329ead2347917d24d932c9a1a826d288f5b6..2f3827441987528d79d9268002c7a7671faff429 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -212,10 +212,12 @@ public class KaiijuConfig {
+ 
+     public static boolean disableVanishApi = false;
+     public static boolean disablePlayerStats = false;
++    public static boolean disableArmSwingEvent = false;
+ 
+     private static void optimizationSettings() {
+         disableVanishApi = getBoolean("optimization.disable-vanish-api", disableVanishApi);
+         disablePlayerStats = getBoolean("optimization.disable-player-stats", disablePlayerStats);
++        disableArmSwingEvent = getBoolean("optimization.disable-arm-swing-event", disableArmSwingEvent);
+     }
+ 
+     public static String serverModName = "Kaiiju";
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index 10ce902a1ce857db5376c8318ba0e67b53883873..4e87165f0a155ace79d9c249c5546951db00dc39 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -2536,6 +2536,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
+         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
+         if (this.player.isImmobile()) return; // CraftBukkit
+         this.player.resetLastActionTime();
++        if (!dev.kaiijumc.kaiiju.KaiijuConfig.disableArmSwingEvent) { // Kaiiju
+         // CraftBukkit start - Raytrace to look for 'rogue armswings'
+         float f1 = this.player.getXRot();
+         float f2 = this.player.getYRot();
+@@ -2568,6 +2569,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
+ 
+         if (event.isCancelled()) return;
+         // CraftBukkit end
++        } // Kaiiju
+         this.player.swing(packet.getHand());
+     }
+ 

patches/server/0032-Option-to-disable-creatures-spawn-events.patch

@@ -0,0 +1,64 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:47:57 +0200
+Subject: [PATCH] Option to disable creatures spawn events
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index 31d66bb2fcf4bb7262df2d8006e307fee92660ea..c9830912019079369268bfbf2c95de18ad598f52 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -151,6 +151,7 @@ public class KaiijuWorldConfig {
+     public boolean tickWhenEmpty = true;
+     public boolean enableEntityThrottling = false;
+     public boolean disableAchievements = false;
++    public boolean disableCreaturesSpawnEvents = false;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -158,6 +159,7 @@ public class KaiijuWorldConfig {
+         tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
+         enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
+         disableAchievements = getBoolean("optimization.disable-achievements", disableAchievements);
++        disableCreaturesSpawnEvents = getBoolean("optimization.disable-creatures-spawn-events", disableCreaturesSpawnEvents);
+     }
+ 
+     public boolean fixVoidTrading = true;
+diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+index 72a5973c6e150533ec70496d72b53c80a142eef7..891edd228699915f165ddf3ca4fcee502874780d 100644
+--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
++++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+@@ -540,7 +540,11 @@ public class ServerChunkCache extends ChunkSource {
+                 chunkRange = (chunkRange > viewDistance) ? viewDistance : chunkRange;
+                 chunkRange = (chunkRange > DistanceManager.MOB_SPAWN_RANGE) ? DistanceManager.MOB_SPAWN_RANGE : chunkRange;
+ 
+-                com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent event = new com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent(player.getBukkitEntity(), (byte)chunkRange);
++                // Kaiiju start - disable creatures spawn events
++                com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent event = null;
++                if (!this.level.kaiijuConfig.disableCreaturesSpawnEvents) {
++                event = new com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent(player.getBukkitEntity(), (byte)chunkRange);
++                // Kaiiju end
+                 event.callEvent();
+                 if (event.isCancelled() || event.getSpawnRadius() < 0) {
+                     regionizedWorldData.mobSpawnMap.remove(player); // Folia - region threading
+@@ -548,14 +552,18 @@ public class ServerChunkCache extends ChunkSource {
+                     player.lastEntitySpawnRadiusSquared = -1.0;
+                     continue;
+                 }
++                // Kaiiju start - disable creatures spawn events
++                chunkRange = Math.min(event.getSpawnRadius(), DistanceManager.MOB_SPAWN_RANGE);
++                }
++                // Kaiiju end
+ 
+-                int range = Math.min(event.getSpawnRadius(), DistanceManager.MOB_SPAWN_RANGE); // limit to max spawn range
++                int range = chunkRange; // limit to max spawn range // Kaiiju
+                 int chunkX = io.papermc.paper.util.CoordinateUtils.getChunkCoordinate(player.getX());
+                 int chunkZ = io.papermc.paper.util.CoordinateUtils.getChunkCoordinate(player.getZ());
+ 
+                 regionizedWorldData.mobSpawnMap.addOrUpdate(player, chunkX, chunkZ, range); // Folia - region threading
+                 player.lastEntitySpawnRadiusSquared = (double)((range << 4) * (range << 4)); // used in anyPlayerCloseEnoughForSpawning
+-                player.playerNaturallySpawnedEvent = event;
++                if (!this.level.kaiijuConfig.disableCreaturesSpawnEvents) player.playerNaturallySpawnedEvent = event; // Kaiiju
+             }
+             // Paper end - optimise chunk tick iteration
+ 

patches/server/0033-Option-to-disable-dolphin-swim-to-treasure.patch

@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:52:00 +0200
+Subject: [PATCH] Option to disable dolphin swim to treasure
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index c9830912019079369268bfbf2c95de18ad598f52..e2fb7d7a7b3126d386b46442c115085d1974ac4e 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -152,6 +152,7 @@ public class KaiijuWorldConfig {
+     public boolean enableEntityThrottling = false;
+     public boolean disableAchievements = false;
+     public boolean disableCreaturesSpawnEvents = false;
++    public boolean disableDolphinSwimToTreasure = false;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -160,6 +161,7 @@ public class KaiijuWorldConfig {
+         enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
+         disableAchievements = getBoolean("optimization.disable-achievements", disableAchievements);
+         disableCreaturesSpawnEvents = getBoolean("optimization.disable-creatures-spawn-events", disableCreaturesSpawnEvents);
++        disableDolphinSwimToTreasure = getBoolean("optimization.disable-dolphin-swim-to-treasure", disableDolphinSwimToTreasure);
+     }
+ 
+     public boolean fixVoidTrading = true;
+diff --git a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+index 8448c5d778998390cf2b683f36e4e18ca7ffdc34..8438ae5194bba7cad22af5e350c5a288529cbcdb 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
++++ b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+@@ -164,7 +164,7 @@ public class Dolphin extends WaterAnimal {
+     protected void registerGoals() {
+         this.goalSelector.addGoal(0, new BreathAirGoal(this));
+         this.goalSelector.addGoal(0, new TryFindWaterGoal(this));
+-        this.goalSelector.addGoal(1, new Dolphin.DolphinSwimToTreasureGoal(this));
++        if (!this.level().kaiijuConfig.disableDolphinSwimToTreasure) this.goalSelector.addGoal(1, new Dolphin.DolphinSwimToTreasureGoal(this)); // Kaiiju
+         this.goalSelector.addGoal(2, new Dolphin.DolphinSwimWithPlayerGoal(this, 4.0D));
+         this.goalSelector.addGoal(4, new RandomSwimmingGoal(this, 1.0D, 10));
+         this.goalSelector.addGoal(4, new RandomLookAroundGoal(this));

patches/server/0034-Unsupported-configuration.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kugge <sofiane.djerbi38@gmail.com>
+Date: Mon, 28 Aug 2023 16:30:36 +0200
+Subject: [PATCH] Unsupported configuration
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 2f3827441987528d79d9268002c7a7671faff429..b0515b073f30f6b3417b28b7fb2242e9ca309354 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -227,4 +227,7 @@ public class KaiijuConfig {
+         serverModName = getString("gameplay.server-mod-name", serverModName);
+         sharedRandomForPlayers = getBoolean("gameplay.shared-random-for-players", sharedRandomForPlayers);
+     }
++
++    private static void unsupportedSettings() {
++    }
+ }

patches/server/0035-Option-to-disable-ensure-tick-thread-checks.patch

@@ -0,0 +1,80 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Thu, 22 Jun 2023 00:55:17 +0200
+Subject: [PATCH] Option to disable ensure tick thread checks
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index b0515b073f30f6b3417b28b7fb2242e9ca309354..2f5520f66da082dc1bc1f17ef3d7ed75bcf436fd 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -228,6 +228,9 @@ public class KaiijuConfig {
+         sharedRandomForPlayers = getBoolean("gameplay.shared-random-for-players", sharedRandomForPlayers);
+     }
+ 
++    public static boolean disableEnsureTickThreadChecks = false;
++
+     private static void unsupportedSettings() {
++        disableEnsureTickThreadChecks = getBoolean("unsupported.disable-ensure-tick-thread-checks", disableEnsureTickThreadChecks);
+     }
+ }
+diff --git a/src/main/java/io/papermc/paper/util/TickThread.java b/src/main/java/io/papermc/paper/util/TickThread.java
+index c6b3c747d4c9792c3b690af4d45b13d2b05039ee..6da5a1e6e2ab7493d24e7f79f601499cb30e5c3c 100644
+--- a/src/main/java/io/papermc/paper/util/TickThread.java
++++ b/src/main/java/io/papermc/paper/util/TickThread.java
+@@ -46,6 +46,7 @@ public class TickThread extends Thread {
+      */
+     @Deprecated
+     public static void ensureTickThread(final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThread()) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);
+@@ -53,6 +54,7 @@ public class TickThread extends Thread {
+     }
+ 
+     public static void ensureTickThread(final ServerLevel world, final BlockPos pos, final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThreadFor(world, pos)) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);
+@@ -60,6 +62,7 @@ public class TickThread extends Thread {
+     }
+ 
+     public static void ensureTickThread(final ServerLevel world, final ChunkPos pos, final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThreadFor(world, pos)) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);
+@@ -67,6 +70,7 @@ public class TickThread extends Thread {
+     }
+ 
+     public static void ensureTickThread(final ServerLevel world, final int chunkX, final int chunkZ, final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThreadFor(world, chunkX, chunkZ)) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);
+@@ -74,6 +78,7 @@ public class TickThread extends Thread {
+     }
+ 
+     public static void ensureTickThread(final Entity entity, final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThreadFor(entity)) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);
+@@ -81,6 +86,7 @@ public class TickThread extends Thread {
+     }
+ 
+     public static void ensureTickThread(final ServerLevel world, final AABB aabb, final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThreadFor(world, aabb)) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);
+@@ -88,6 +94,7 @@ public class TickThread extends Thread {
+     }
+ 
+     public static void ensureTickThread(final ServerLevel world, final double blockX, final double blockZ, final String reason) {
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
+         if (!isTickThreadFor(world, blockX, blockZ)) {
+             MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
+             throw new IllegalStateException(reason);

patches/server/0036-Skip-event-if-no-listeners.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: foss-mc <69294560+foss-mc@users.noreply.github.com>
+Date: Sat, 8 Jul 2023 01:31:10 +0300
+Subject: [PATCH] Skip event if no listeners
+
+
+diff --git a/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java b/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
+index 7ce9ebba8ce304d1f3f21d4f15ee5f3560d7700b..d0f6d4e6ab3a7a4bd6cb8e27c90c7c7300f204a5 100644
+--- a/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
++++ b/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
+@@ -36,14 +36,21 @@ class PaperEventManager {
+ 
+     // SimplePluginManager
+     public void callEvent(@NotNull Event event) {
++        // Kaiiju start - Skip event of no listeners
++        HandlerList handlers = event.getHandlers();
++        RegisteredListener[] listeners = handlers.getRegisteredListeners();
++        if (listeners.length == 0) return;
++        // Kaiiju end
+         if (event.isAsynchronous() && this.server.isPrimaryThread()) {
+             throw new IllegalStateException(event.getEventName() + " may only be triggered asynchronously.");
+         } else if (!event.isAsynchronous() && !this.server.isPrimaryThread() && !this.server.isStopping()) {
+             throw new IllegalStateException(event.getEventName() + " may only be triggered synchronously.");
+         }
+ 
+-        HandlerList handlers = event.getHandlers();
+-        RegisteredListener[] listeners = handlers.getRegisteredListeners();
++        // Kaiiju start - Moved up
++        //HandlerList handlers = event.getHandlers();
++        //RegisteredListener[] listeners = handlers.getRegisteredListeners();
++        // Kaiiju end
+ 
+         for (RegisteredListener registration : listeners) {
+             if (!registration.getPlugin().isEnabled()) {

patches/server/0037-Teleport-async-if-we-cannot-move-entity-off-main.patch

@@ -0,0 +1,75 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sat, 8 Jul 2023 03:31:04 +0300
+Subject: [PATCH] Teleport async if we cannot move entity off-main
+
+Entities with huge velocity (100k+ velocity anarchy travel exploit) might disappear / crash the server because they travel a region each tick.
+TODO: Entities with huge velocity still throw stacktraces because they are ticked in "null" regions.
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index e2fb7d7a7b3126d386b46442c115085d1974ac4e..44f5540a6a5733cf6f10f6b04fc9611ac4e53685 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -169,6 +169,7 @@ public class KaiijuWorldConfig {
+     public boolean fixTripWireStateInconsistency = true;
+     public boolean safeTeleporting = true;
+     public boolean sandDuplication = false;
++    public boolean teleportAsyncOnHighVelocity = false;
+ 
+     private void gameplaySettings() {
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+@@ -176,5 +177,6 @@ public class KaiijuWorldConfig {
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
+         safeTeleporting = getBoolean("gameplay.safe-teleportation", safeTeleporting);
+         sandDuplication = getBoolean("gameplay.sand-duplication", sandDuplication);
++        teleportAsyncOnHighVelocity = getBoolean("gameplay.teleport-async-on-high-velocity", teleportAsyncOnHighVelocity);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 3dc840bf74e12a9e757a2adaa1d0b22d68ac3d26..2d87c5f7c3d63a274fc3f104ee6d29849754c485 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -1115,7 +1115,20 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                     }
+                 }
+ 
++                try { // Kaiiju - Teleport async if we cannot move entity off-main
+                 this.setPos(this.getX() + vec3d1.x, this.getY() + vec3d1.y, this.getZ() + vec3d1.z);
++                // Kaiiju start - Teleport async if we cannot move entity off-main
++                } catch (IllegalStateException e) {
++                    if (this.level().kaiijuConfig.teleportAsyncOnHighVelocity)
++                    this.teleportAsync((ServerLevel) this.level(), this.position().add(vec3d1),
++                                       this.getYRot(), this.getXRot(),
++                                       null, PlayerTeleportEvent.TeleportCause.UNKNOWN,
++                                       Entity.TELEPORT_FLAG_LOAD_CHUNK | Entity.TELEPORT_FLAG_TELEPORT_PASSENGERS,
++                                       null
++                    );
++                    else LOGGER.error("High velocity entity caused off-main setPos: ", e);
++                }
++                // Kaiiju end
+             }
+ 
+             this.level().getProfiler().pop();
+@@ -3940,13 +3953,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         // check for same region
+         if (destination == this.level()) {
+             Vec3 currPos = this.position();
+-            if (
+-                destination.regioniser.getRegionAtUnsynchronised(
+-                    io.papermc.paper.util.CoordinateUtils.getChunkX(currPos), io.papermc.paper.util.CoordinateUtils.getChunkZ(currPos)
+-                ) == destination.regioniser.getRegionAtUnsynchronised(
+-                    io.papermc.paper.util.CoordinateUtils.getChunkX(pos), io.papermc.paper.util.CoordinateUtils.getChunkZ(pos)
+-                )
+-            ) {
++            // Kaiiju start - We shouldn't teleport when regions are null
++            io.papermc.paper.threadedregions.ThreadedRegionizer.ThreadedRegion<io.papermc.paper.threadedregions.TickRegions.TickRegionData,
++                                                                               io.papermc.paper.threadedregions.TickRegions.TickRegionSectionData>
++            currRegion = destination.regioniser.getRegionAtUnsynchronised(io.papermc.paper.util.CoordinateUtils.getChunkX(currPos), io.papermc.paper.util.CoordinateUtils.getChunkZ(currPos));
++            io.papermc.paper.threadedregions.ThreadedRegionizer.ThreadedRegion<io.papermc.paper.threadedregions.TickRegions.TickRegionData,
++                                                                               io.papermc.paper.threadedregions.TickRegions.TickRegionSectionData>
++            destRegion = destination.regioniser.getRegionAtUnsynchronised(io.papermc.paper.util.CoordinateUtils.getChunkX(pos), io.papermc.paper.util.CoordinateUtils.getChunkZ(pos));
++            if (currRegion == destRegion && currRegion != null) {
++            // Kaiiju end
+                 EntityTreeNode passengerTree = this.detachPassengers();
+                 // Note: The client does not accept position updates for controlled entities. So, we must
+                 // perform a lot of tracker updates here to make it all work out.

patches/server/0038-Add-back-worldborder-command.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 9 Jul 2023 19:17:40 +0300
+Subject: [PATCH] Add back worldborder command
+
+
+diff --git a/src/main/java/net/minecraft/commands/Commands.java b/src/main/java/net/minecraft/commands/Commands.java
+index 4f6bd2d88219ac82c4d08c35231e5d3314f87110..21e2a55c3c9023718f51fdb2d3a321eceb2aa7ca 100644
+--- a/src/main/java/net/minecraft/commands/Commands.java
++++ b/src/main/java/net/minecraft/commands/Commands.java
+@@ -202,7 +202,7 @@ public class Commands {
+         TitleCommand.register(this.dispatcher);
+         //TriggerCommand.register(this.dispatcher); // Folia - region threading - TODO later
+         WeatherCommand.register(this.dispatcher);
+-        //WorldBorderCommand.register(this.dispatcher); // Folia - region threading - TODO later
++        WorldBorderCommand.register(this.dispatcher); // Folia - region threading - TODO later // Kaiiju
+         if (JvmProfiler.INSTANCE.isAvailable()) {
+             JfrCommand.register(this.dispatcher);
+         }

patches/server/0039-Add-back-data-command.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 9 Jul 2023 19:18:42 +0300
+Subject: [PATCH] Add back data command
+
+
+diff --git a/src/main/java/net/minecraft/commands/Commands.java b/src/main/java/net/minecraft/commands/Commands.java
+index 21e2a55c3c9023718f51fdb2d3a321eceb2aa7ca..034c64df1fd1f58a01535183753f94899c50df2b 100644
+--- a/src/main/java/net/minecraft/commands/Commands.java
++++ b/src/main/java/net/minecraft/commands/Commands.java
+@@ -150,7 +150,7 @@ public class Commands {
+         ClearInventoryCommands.register(this.dispatcher, commandRegistryAccess);
+         //CloneCommands.register(this.dispatcher, commandRegistryAccess); // Folia - region threading - TODO
+         DamageCommand.register(this.dispatcher, commandRegistryAccess);
+-        //DataCommands.register(this.dispatcher); // Folia - region threading - TODO
++        DataCommands.register(this.dispatcher); // Folia - region threading - TODO // Kaiiju
+         //DataPackCommand.register(this.dispatcher); // Folia - region threading - TODO
+         //DebugCommand.register(this.dispatcher); // Folia - region threading - TODO
+         DefaultGameModeCommands.register(this.dispatcher);

patches/server/0041-Global-event-synchronization.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Mon, 28 Aug 2023 16:57:55 +0200
+Subject: [PATCH] Global event synchronization
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 15cdfc9bf0e4a12f1f3e9e8c224f7a5bacd9bfc7..e8c4d6529a47ea18ec3ce1a95ae057ee82a20370 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -244,8 +244,10 @@ public class KaiijuConfig {
+     }
+ 
+     public static boolean disableEnsureTickThreadChecks = false;
++    public static boolean globalEventSynchronization = false;
+ 
+     private static void unsupportedSettings() {
+         disableEnsureTickThreadChecks = getBoolean("unsupported.disable-ensure-tick-thread-checks", disableEnsureTickThreadChecks);
++        globalEventSynchronization = getBoolean("unsupported.global-event-synchronization", globalEventSynchronization);
+     }
+ }
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/lock/GlobalPluginSynchronizer.java b/src/main/java/dev/kaiijumc/kaiiju/lock/GlobalPluginSynchronizer.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..406b241c8d4998b9977a43b8c1b628c7a27a927d
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/lock/GlobalPluginSynchronizer.java
+@@ -0,0 +1,5 @@
++package dev.kaiijumc.kaiiju.lock;
++
++public class GlobalPluginSynchronizer {
++    public static final Object lock = new Object();
++}
+diff --git a/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java b/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
+index d0f6d4e6ab3a7a4bd6cb8e27c90c7c7300f204a5..03b8f704de1e9a798391297d3daf3c49bf599a56 100644
+--- a/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
++++ b/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
+@@ -58,6 +58,13 @@ class PaperEventManager {
+             }
+ 
+             try {
++                // Kaiiju start - Global Event Synchronization
++                if (dev.kaiijumc.kaiiju.KaiijuConfig.globalEventSynchronization) {
++                    synchronized (dev.kaiijumc.kaiiju.lock.GlobalPluginSynchronizer.lock) {
++                        registration.callEvent(event);
++                    }
++                } else
++                // Kaiiju end
+                 registration.callEvent(event);
+             } catch (AuthorNagException ex) {
+                 Plugin plugin = registration.getPlugin();

patches/todo/0012-Static-Distance-WIP.patch

@@ -0,0 +1,101 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Wed, 19 Apr 2023 02:37:04 +0300
+Subject: [PATCH] Static Distance WIP
+
+
+diff --git a/src/main/java/io/papermc/paper/chunk/PlayerChunkLoader.java b/src/main/java/io/papermc/paper/chunk/PlayerChunkLoader.java
+index e77972c4c264100ffdd824bfa2dac58dbbc6d678..cddacd6d5bbe97641bd23f5c067012907d9c5c01 100644
+--- a/src/main/java/io/papermc/paper/chunk/PlayerChunkLoader.java
++++ b/src/main/java/io/papermc/paper/chunk/PlayerChunkLoader.java
+@@ -75,6 +75,17 @@ public final class PlayerChunkLoader {
+         return data.getTargetSendViewDistance();
+     }
+ 
++    // Kaiiju start - Static distance
++    public static int getStaticDistance(final ServerPlayer player) {
++        final ServerLevel level = (ServerLevel)player.level;
++        final PlayerLoaderData data = level.chunkSource.chunkMap.playerChunkManager.getData(player);
++        if (data == null) {
++            return level.chunkSource.chunkMap.playerChunkManager.getTargetStaticDistance();
++        }
++        return data.getTargetSendViewDistance();
++    }
++    // Kaiiju end
++
+     protected final ChunkMap chunkMap;
+     protected final Reference2ObjectLinkedOpenHashMap<ServerPlayer, PlayerLoaderData> playerMap = new Reference2ObjectLinkedOpenHashMap<>(512, 0.7f);
+     protected final ReferenceLinkedOpenHashSet<PlayerLoaderData> chunkSendQueue = new ReferenceLinkedOpenHashSet<>(512, 0.7f);
+@@ -132,6 +143,12 @@ public final class PlayerChunkLoader {
+ 
+     // no throttling is applied below this VD for loading
+ 
++    // Kaiiju start - Static distance
++    public final PlayerAreaMap staticMap;
++    protected int rawStaticDistance = -1;
++    // Kaiiju end
++
++
+     /**
+      * The chunks to be sent to players, provided they're send-ready. Send-ready means the chunk and its 1 radius neighbours are loaded.
+      */
+@@ -190,6 +207,12 @@ public final class PlayerChunkLoader {
+         return this.rawSendDistance == -1 ? this.getLoadDistance() : this.rawSendDistance;
+     }
+ 
++    // Kaiiju start - Static distance
++    public int getTargetStaticDistance() {
++        return this.rawStaticDistance == -1 ? this.getStaticDistance() : this.rawStaticDistance;
++    }
++    // Kaiiju end
++
+     public void setTargetSendDistance(final int distance) {
+         this.setSendDistance(distance);
+     }
+@@ -231,6 +254,16 @@ public final class PlayerChunkLoader {
+         this.rawTickDistance = distance;
+     }
+ 
++    // Kaiiju start - Static distance
++    public void setStaticDistance(final int distance) {
++        this.rawStaticDistance = distance;
++    }
++
++    public int getStaticDistance() {
++        return this.rawStaticDistance;
++    }
++    // Kaiiju end
++
+     /*
+       Players have 3 different types of view distance:
+       1. Sending view distance
+@@ -256,7 +289,13 @@ public final class PlayerChunkLoader {
+ 
+     public PlayerChunkLoader(final ChunkMap chunkMap, final PooledLinkedHashSets<ServerPlayer> pooledHashSets) {
+         this.chunkMap = chunkMap;
++        // Kaiiju start - Static distance
+         this.broadcastMap = new PlayerAreaMap(pooledHashSets,
++                null,
++                (ServerPlayer player, int rangeX, int rangeZ, int currPosX, int currPosZ, int prevPosX, int prevPosZ,
++                 com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> newState) -> {});
++        // Kaiiju end
++        this.staticMap = new PlayerAreaMap(pooledHashSets,
+                 null,
+                 (ServerPlayer player, int rangeX, int rangeZ, int currPosX, int currPosZ, int prevPosX, int prevPosZ,
+                  com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> newState) -> {
+@@ -807,6 +846,7 @@ public final class PlayerChunkLoader {
+         protected int sendViewDistance = -1;
+         protected int loadViewDistance = -1;
+         protected int tickViewDistance = -1;
++        protected int staticViewDistance = -1; // Kaiiju
+ 
+         protected long nextChunkSendTarget;
+ 
+@@ -932,6 +972,7 @@ public final class PlayerChunkLoader {
+             this.loader.loadMap.remove(this.player);
+             this.loader.loadTicketCleanup.remove(this.player);
+             this.loader.tickMap.remove(this.player);
++            this.loader.staticMap.remove(this.player); // Kaiiju
+         }
+ 
+         protected int getClientViewDistance() {