Delete that ugly prefix

This patch break random redstone farm
We want kaiiju to be as vanilla as possible
And to respect every end user
So here is a toggle.

README.md

@@ -12,13 +12,18 @@
 
 ## Features
 
-### Main additions
+### Primary
 - **Xymb Linear Format**: Saves about 50% of disk space in OW/Nether and 95% in The End.
 - **Auto update**: Automatic upstream updates.
 
+### Notable
+- **Optimize Hopper**: Enable/Disable Paper "Optimize Hopper" patch that break a lot of redstone farms.
+- **Fix void trading**: Enable/Disable void trading.
+
 ### Configuration
 
 ```yaml
+verbose: false
 region-format:
   debug: false
 network:
@@ -26,20 +31,26 @@ network:
   alternate-keepalive: false
 gameplay:
   server-mod-name: Kaiiju
+  shared-random-for-players: true
 world-settings:
   default:
     region-format:
-      format: LINEAR
+      format: ANVIL
       linear:
         compression-level: 1
         crash-on-broken-symlink: true
     gameplay:
       shulker-box-drop-contents-when-destroyed: true
+      fix-void-trading: true
+      optimize-hoppers: true
+      tick-when-empty: true
+      break-redstone-on-top-of-trap-doors-early: true
+config-version: 1
 ```
+Documentation: [Kaiiju Wiki](https://github.com/KaiijuMC/Kaiiju/wiki/Configuration)
 
 ### Roadmap
 - **Static view distance**: Reduce RAM usage / Region size with a "static" view distance.
-- **Linear timestamps**: Add chunk timestamps to linear region files.
 - **Native world conversion**: Convert region file format at startup.
 - **Stash deduplication**: Make giant dupe stashes possible and lagless.
 

gradle.properties

@@ -2,7 +2,7 @@ group = dev.kaiijumc.kaiiju
 version = 1.19.4-R0.1-SNAPSHOT
 mcVersion = 1.19.4
 
-foliaRef = dddaab9bbddf05311b9a0e8560f5b58024345b7b
+foliaRef = ca3b7adee262589e379183f8c36a50d10967a0b2
 
 org.gradle.caching=true
 org.gradle.parallel=true

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/server/0001-Rebranding.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 02:58:46 +0200
-Subject: [PATCH] Kaiiju Rebranding
+Subject: [PATCH] Rebranding
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
@@ -48,7 +48,7 @@ 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 2ce29b6ccb9a3b520b8c1edf53aae2e9769ba252..f675fcae235a8c2722d9bba65d5e1292c5b76deb 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;
@@ -133,7 +133,7 @@ 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 61bac6fda2d2f4b3db8a3f7e3003f47c84d5c4cd..19d6b811dccdc2b7a22054d3fe72b3981a6aae3a 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
@@ -145,7 +145,7 @@ index f5721f6d719b7055fdccc81d5e67ed758e90cb10..0696ad97437726fd6a13badfe7db0617
              while (this.getRunningThread().isAlive()) {
                  this.getRunningThread().stop();
                  try {
-@@ -1833,7 +1833,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -1815,7 +1815,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
  
      @DontObfuscate
      public String getServerModName() {

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, prefix + ChatColor.RED + "If you encounter any issues please use the /stop command to restart your server.");
++            Command.broadcastCommandMessage(sender, ChatColor.RED + "Please note that this command is not supported and may cause issues.");
++            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) {
@@ -432,7 +430,7 @@ 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 afb3d0fa48b7fd6d273361c6dc32764b5d35c356..a3b4b49ca8612a61bc2e7a1e2d2e942e7ebe1883 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 {
@@ -453,7 +451,7 @@ 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 176f3acec268dad80cc90029edd88e7a0c3e8885..48f946243af24a9d4847f6a7a59449136cf6ee83 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 {

patches/server/0003-Region-format-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 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
@@ -20,10 +20,14 @@ index 7da7e0aeb5eac9ac73a3570e716f1ceb11fd7027..b86c90cc3601e666998cfa12f44515f6
 +    }
  }
 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 +39,20 @@ 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 String regionFormatName = "ANVIL";
++    public RegionFileFormat regionFormatName = RegionFileFormat.ANVIL;
 +    public int regionFormatLinearCompressionLevel = 1;
 +
 +    private void regionFormatSettings() {
-+        regionFormatName = getString("region-format.format", regionFormatName).toUpperCase();
-+        if (!regionFormatList.contains(regionFormatName)) {
++        regionFormatName = RegionFileFormat.fromString(getString("region-format.format", regionFormatName.name()));
++        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) {
@@ -59,9 +62,30 @@ 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 19d6b811dccdc2b7a22054d3fe72b3981a6aae3a..a2cb5aae38e8666da8c8f3b5095d426c62371a3b 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

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

@@ -1,8 +1,11 @@
 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
@@ -109,10 +112,10 @@ 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..245e3b1801c5f92054d9c0d0d8fc2a8fcfd6a1d4
+index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4bf89d0727
 --- /dev/null
 +++ b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java
-@@ -0,0 +1,328 @@
+@@ -0,0 +1,337 @@
 +package dev.kaiijumc.kaiiju.region;
 +
 +import com.github.luben.zstd.ZstdInputStream;
@@ -134,19 +137,22 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +import java.nio.file.StandardCopyOption;
 +import java.util.ArrayList;
 +import java.util.Arrays;
++import java.util.List;
 +import java.util.concurrent.locks.ReentrantLock;
 +
 +public class LinearRegionFile extends Thread implements AbstractRegionFile {
-+    private static long SUPERBLOCK = -4323716122432332390L;
-+    private static byte VERSION = 1;
-+    private static int HEADER_SIZE = 32;
-+    private static int FOOTER_SIZE = 8;
++    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 static final List<Byte> SUPPORTED_VERSIONS = Arrays.asList((byte) 1, (byte) 2);
 +
 +
 +    private final byte[][] buffer = new byte[1024][];
 +    private final int[] bufferUncompressedSize = new int[1024];
 +
++    private final int[] chunkTimestamps = new int[1024];
 +    private final Object markedToSaveLock = new Object();
 +    private final ChunkStatus[] statuses = new ChunkStatus[1024];
 +
@@ -186,11 +192,11 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +
 +            long superBlock = rawDataStream.readLong();
 +            if (superBlock != SUPERBLOCK)
-+                throw new RuntimeException("Superblock invalid: " + superBlock + " file " + file);
++                throw new RuntimeException("Invalid superblock: " + superBlock + " file " + file);
 +
 +            byte version = rawDataStream.readByte();
-+            if (version != VERSION)
-+                throw new RuntimeException("Version invalid: " + version + " file " + file);
++            if (!SUPPORTED_VERSIONS.contains(version))
++                throw new RuntimeException("Invalid version: " + version + " file " + file);
 +
 +            // Skip newestTimestamp (Long) + Compression level (Byte) + Chunk count (Short): Unused.
 +            rawDataStream.skipBytes(11);
@@ -198,7 +204,7 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +            int dataCount = rawDataStream.readInt();
 +            long fileLength = file.toFile().length();
 +            if (fileLength != HEADER_SIZE + dataCount + FOOTER_SIZE)
-+                throw new IOException("File length invalid " + this.regionFile + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
++                throw new IOException("Invalid file length: " + this.regionFile + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
 +
 +            rawDataStream.skipBytes(8); // Skip data hash (Long): Unused.
 +
@@ -214,7 +220,7 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +            int[] starts = new int[1024];
 +            for(int i = 0; i < 1024; i++) {
 +                starts[i] = dataStream.readInt();
-+                dataStream.skipBytes(4); // Skip timestamps (Int): Unimplemented TODO: Implement per-chunk timestamps
++                dataStream.skipBytes(4); // Skip timestamps (Int): Unused.
 +            }
 +
 +            for(int i = 0; i < 1024; i++) {
@@ -278,7 +284,7 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +    public synchronized void flush() throws IOException {
 +        if(!isMarkedToSave()) return;
 +
-+        long timestamp = System.currentTimeMillis() / 1000L;
++        long timestamp = getTimestamp();
 +        short chunkCount = 0;
 +
 +        File tempFile = new File(regionFile.toString() + ".tmp");
@@ -306,8 +312,8 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +            } else byteBuffers.add(null);
 +        }
 +        for(int i = 0; i < 1024; i++) {
-+            zstdDataStream.writeInt(this.bufferUncompressedSize[i]);
-+            zstdDataStream.writeInt(0); // TODO: IMPLEMENT PER CHUNK TIMESTAMPS
++            zstdDataStream.writeInt(this.bufferUncompressedSize[i]); // Write uncompressed size
++            zstdDataStream.writeInt(this.chunkTimestamps[i]); // Write timestamp
 +        }
 +        for(int i = 0; i < 1024; i++) {
 +            if(byteBuffers.get(i) != null)
@@ -349,12 +355,13 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +            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);
 +        }
-+
 +        markToSave();
 +    }
 +
@@ -407,6 +414,7 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +        int i = getChunkIndex(pos.x, pos.z);
 +        this.buffer[i] = null;
 +        this.bufferUncompressedSize[i] = 0;
++        this.chunkTimestamps[i] = getTimestamp();
 +        markToSave();
 +    }
 +
@@ -427,6 +435,10 @@ index 0000000000000000000000000000000000000000..245e3b1801c5f92054d9c0d0d8fc2a8f
 +        return (x & 31) + ((z & 31) << 5);
 +    }
 +
++    private static int getTimestamp() {
++        return (int) (System.currentTimeMillis() / 1000L);
++    }
++
 +    public boolean recalculateHeader() {
 +        return false;
 +    }
@@ -509,16 +521,15 @@ 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
@@ -576,14 +587,13 @@ index c8bc7db4c22f48047aa409f0bcff3ef8c4034781..5ad209fed6aef1992af0472ac0af0911
          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 acc8af33ad8534d812908b0feb9a1963ee2c64fb..b6b6ce1c1bda836cc7ea37bcc5388e8295bf2a71 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 {
-     private final EntityRegionFileStorage entityStorage;
+@@ -426,8 +426,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
  
      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
@@ -591,7 +601,7 @@ index acc8af33ad8534d812908b0feb9a1963ee2c64fb..20359c63b19c7e0c703ef1562fb77480
          }
  
          protected void write(ChunkPos pos, net.minecraft.nbt.CompoundTag nbt) throws IOException {
-@@ -633,7 +632,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -633,7 +633,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
          // CraftBukkit end
          boolean flag2 = minecraftserver.forceSynchronousWrites();
          DataFixer datafixer = minecraftserver.getFixerUpper();
@@ -601,7 +611,7 @@ 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 e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..ac35e7eb8cb5f19391a18eb9d6b5ba26769ce2f6 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 {
@@ -613,22 +623,21 @@ index e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..469802b9c454c5e98c0a55ba89559d9d
      private final DimensionDataStorage overworldDataStorage;
  
      public WorldUpgrader(LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, Registry<LevelStem> dimensionOptionsRegistry, boolean eraseCache) {
-@@ -115,8 +115,12 @@ public class WorldUpgrader {
-             while (iterator1.hasNext()) {
+@@ -116,7 +116,12 @@ public class WorldUpgrader {
                  ResourceKey<LevelStem> resourcekey1 = (ResourceKey) iterator1.next(); // CraftBukkit
                  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
-@@ -235,7 +239,7 @@ public class WorldUpgrader {
+@@ -235,7 +240,7 @@ public class WorldUpgrader {
          File file = this.levelStorage.getDimensionPath((ResourceKey) null).toFile(); // CraftBukkit
          File file1 = new File(file, "region");
          File[] afile = file1.listFiles((file2, s) -> {
@@ -637,7 +646,7 @@ 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 {
@@ -651,7 +660,7 @@ 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 9c56304476b4fc841b5d7694232617586ebd8e84..0868e164e4e2516c3f61387798adee914bb84131 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> {
@@ -660,23 +669,22 @@ 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 29facbdcbad17ce38bf785f7f3f8346d81cbc32f..617389f3304b3d8f6ad9a80474a29bf22e86a331 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
@@ -746,7 +754,7 @@ 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 9633b01d2d961fd1403e353484d336376ef009eb..150b1cde868c4220aeeb33ae333e96e788c277a6 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 {
@@ -758,7 +766,7 @@ 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
  
@@ -769,13 +777,13 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
      // 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;
@@ -828,7 +836,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              }
              // Paper end
              return regionfile;
-@@ -124,28 +132,46 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -124,28 +132,49 @@ 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
@@ -855,22 +863,25 @@ 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);
              }
++            // Kaiiju start - Polyglot
 +            if (dev.kaiijumc.kaiiju.KaiijuConfig.regionFormatDebug)
 +                org.bukkit.Bukkit.getLogger().info("Opening file " + path1 + " with format " + this.format + " (existingOnly = " + existingOnly + ")");
++            // Kaiiju end
 +
              // 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);
@@ -882,7 +893,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              }
              // Paper end
              return regionfile1;
-@@ -173,7 +199,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -173,7 +202,7 @@ public class RegionFileStorage implements AutoCloseable {
      }
  
  
@@ -891,7 +902,7 @@ 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 {
+@@ -220,14 +249,14 @@ 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
@@ -908,7 +919,7 @@ 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 {
+@@ -237,7 +266,7 @@ public class RegionFileStorage implements AutoCloseable {
  
          // Paper start
          if (regionfile.isOversized(pos.x, pos.z)) {
@@ -917,7 +928,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
              return readOversizedChunk(regionfile, pos);
          }
          // Paper end
-@@ -251,12 +277,12 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -251,12 +280,12 @@ public class RegionFileStorage implements AutoCloseable {
                      if (this.isChunkData) {
                          ChunkPos chunkPos = ChunkSerializer.getChunkCoordinate(nbttagcompound);
                          if (!chunkPos.equals(pos)) {
@@ -933,7 +944,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
                              return null;
                          }
                      }
-@@ -290,13 +316,13 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -290,13 +319,13 @@ public class RegionFileStorage implements AutoCloseable {
  
          return nbttagcompound;
          } finally { // Paper start
@@ -949,7 +960,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          if (regionfile == null) {
              return;
          }
-@@ -326,7 +352,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -326,7 +355,7 @@ public class RegionFileStorage implements AutoCloseable {
      }
  
      protected void write(ChunkPos pos, @Nullable CompoundTag nbt) throws IOException {
@@ -958,7 +969,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          if (nbt == null && regionfile == null) {
              return;
          }
-@@ -376,7 +402,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -376,7 +405,7 @@ public class RegionFileStorage implements AutoCloseable {
          }
          // Paper end
          } finally { // Paper start
@@ -967,7 +978,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
          } // Paper end
      }
  
-@@ -385,7 +411,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -385,7 +414,7 @@ public class RegionFileStorage implements AutoCloseable {
          ObjectIterator objectiterator = this.regionCache.values().iterator();
  
          while (objectiterator.hasNext()) {
@@ -976,7 +987,7 @@ index 9633b01d2d961fd1403e353484d336376ef009eb..c9fbba6f709ed0540dcc22b41e50ce9d
  
              try {
                  regionfile.close();
-@@ -401,7 +427,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -401,7 +430,7 @@ public class RegionFileStorage implements AutoCloseable {
          ObjectIterator objectiterator = this.regionCache.values().iterator();
  
          while (objectiterator.hasNext()) {
@@ -986,7 +997,7 @@ 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 5561b8499a0503b850974b1dc309edfb80219549..9394d191c56aab78e63fd3f283efedd69384e323 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
@@ -995,7 +1006,7 @@ 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;

patches/server/0005-Network-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: 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

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

@@ -1,8 +1,9 @@
 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

patches/server/0007-Alternate-Keepalive.patch

@@ -1,8 +1,10 @@
 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

patches/server/0008-Gameplay-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: Sat, 8 Apr 2023 23:32:34 +0300
-Subject: [PATCH] Kaiiju Gameplay Configuration
+Subject: [PATCH] Gameplay Configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
@@ -17,7 +17,7 @@ index b42a3466f145a92608c8746fd4beb529b4a60b01..6d0e1edfb7d3c020f70f6a194f16e836
 +    }
  }
 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..6a700b5b15da394f42461b59f85eb8918c2121ad 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 {
@@ -28,4 +28,3 @@ index b194f4dbebcbbf5bb4e026a0169e2d24806b46ec..73d79fe0077b28db2f9e7fa13a1ae6ef
 +    private void gameplaySettings() {
 +    }
  }
-\ No newline at end of file

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

@@ -1,11 +1,13 @@
 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 6a700b5b15da394f42461b59f85eb8918c2121ad..c3347922439153bb4377d322fc3da2d16255d885 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 {
@@ -18,7 +20,6 @@ index 73d79fe0077b28db2f9e7fa13a1ae6eff9abd6a9..bac11b0e30a86d0689693ff129b53bca
 +        shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
      }
  }
-\ No newline at end of file
 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
 --- a/src/main/java/net/minecraft/world/item/BlockItem.java

patches/server/0010-Server-mod-name.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: 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
@@ -19,10 +19,10 @@ 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 a2cb5aae38e8666da8c8f3b5095d426c62371a3b..2ee67890df46c8eb23c387519721c88b762599ce 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
+@@ -1815,7 +1815,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
  
      @DontObfuscate
      public String getServerModName() {

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 c96af96bc3716a420e188739cfcb3f7f355aad36..1bedca8a975bb836083d592bb666824259fb6b66 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 String regionFormatName = "ANVIL";
+     public RegionFileFormat regionFormatName = RegionFileFormat.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 + ")");
@@ -42,7 +42,7 @@ 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 5ad209fed6aef1992af0472ac0af0911d178a260..0ef89e0bc214364fd904c3e5022c660b32b2caaa 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
@@ -64,21 +64,21 @@ index 43503974433c4d1808b2acb2b79f46d640725dc0..73ac94eaebdeaa94c83f1f23b53e686d
          // 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 b6b6ce1c1bda836cc7ea37bcc5388e8295bf2a71..c9cfbde14bfde9fa24835ff29b7aa802c2fd1c87 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 {
-     private final EntityRegionFileStorage entityStorage;
+@@ -426,8 +426,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
  
      private static final class EntityRegionFileStorage extends net.minecraft.world.level.chunk.storage.RegionFileStorage {
+ 
 -        public EntityRegionFileStorage(String 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 {
+@@ -633,7 +633,7 @@ 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 ac35e7eb8cb5f19391a18eb9d6b5ba26769ce2f6..a9c6ca7c621bb2431bcf0ae879b192f748bf931b 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 0868e164e4e2516c3f61387798adee914bb84131..52381c34920f442333a72df637d021fa2627b0c4 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 617389f3304b3d8f6ad9a80474a29bf22e86a331..763b3e1c44f109d2fbbf1314f900c265d3b24e06 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(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, 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(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
@@ -136,7 +135,7 @@ 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 150b1cde868c4220aeeb33ae333e96e788c277a6..e490450419e5739f76093f2ea62f38622490dec2 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;
@@ -149,7 +148,7 @@ index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc234
      public final Long2ObjectLinkedOpenHashMap<dev.kaiijumc.kaiiju.region.AbstractRegionFile> regionCache = new Long2ObjectLinkedOpenHashMap(); // Kaiiju
 @@ -28,6 +29,7 @@ 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
@@ -159,14 +158,14 @@ index c9fbba6f709ed0540dcc22b41e50ce9d01a6381c..70e3ee306283263cdcdb7a66c80fc234
      }
      // Paper end - cache regionfile does not exist state
  
--    protected RegionFileStorage(String 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, 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(String format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync, boolean isChunkData) { // Kaiiju
+-    RegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, 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;
@@ -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 {
-                     default -> "mca";
+@@ -159,6 +177,7 @@ public class RegionFileStorage implements AutoCloseable {
                  };
                  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)
+             // Kaiiju start - Polyglot
 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 9394d191c56aab78e63fd3f283efedd69384e323..dcfe4a285cc5865be3b0c1b8104b722895135dd0 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 +1,37 @@
+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 6f785078ca5123eb06913f95183475584116ebf5..a2eaa6d58ff7cbb88716d26996d2842cddfee560 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -147,8 +147,10 @@ public class KaiijuWorldConfig {
+     }
+ 
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
++    public boolean fixVoidTrading = true;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
++        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 c9cfbde14bfde9fa24835ff29b7aa802c2fd1c87..9ad16476bedc9ac3d44cd3fbecbf9cf326d6f1be 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -2825,7 +2825,7 @@ 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 a2eaa6d58ff7cbb88716d26996d2842cddfee560..01f194cfbd6f0e371f410c94aaecf1595acb22d8 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -148,9 +148,11 @@ public class KaiijuWorldConfig {
+ 
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean fixVoidTrading = true;
++    public boolean optimizeHoppers = true;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
++        optimizeHoppers = getBoolean("gameplay.optimize-hoppers", optimizeHoppers);
+     }
+ }
+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 0134370081182260d578ee1d8a16d544c03b6a0d..555d86f0a9132c2292470c60f263e59082f0c26e 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
+@@ -401,49 +401,51 @@ 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
+             }
+         }
+     }
+@@ -467,6 +469,12 @@ 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
+             return !HopperBlockEntity.isEmptyContainer(iinventory, enumdirection) && anyMatch(iinventory, enumdirection, (item, i) -> {
+@@ -499,48 +507,50 @@ 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 01f194cfbd6f0e371f410c94aaecf1595acb22d8..657a56a8cfa134943f8503e413b4eaf592a83854 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -149,10 +149,12 @@ public class KaiijuWorldConfig {
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean fixVoidTrading = true;
+     public boolean optimizeHoppers = true;
++    public boolean tickWhenEmpty = true;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+         optimizeHoppers = getBoolean("gameplay.optimize-hoppers", optimizeHoppers);
++        tickWhenEmpty = getBoolean("gameplay.tick-when-empty", tickWhenEmpty);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 9ad16476bedc9ac3d44cd3fbecbf9cf326d6f1be..cbb7dce873f0aa1ae7f85a6f0985bbe8d66a54ae 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -744,7 +744,7 @@ 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 +1,45 @@
+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 657a56a8cfa134943f8503e413b4eaf592a83854..ab56f61e9f77f743caabbd49d1e028e8ce296355 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -150,11 +150,13 @@ public class KaiijuWorldConfig {
+     public boolean fixVoidTrading = true;
+     public boolean optimizeHoppers = true;
+     public boolean tickWhenEmpty = true;
++    public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+         optimizeHoppers = getBoolean("gameplay.optimize-hoppers", optimizeHoppers);
+         tickWhenEmpty = getBoolean("gameplay.tick-when-empty", tickWhenEmpty);
++        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 4bddb91e289bbfbc75d532e63f935d585e41fc43..f8dba24931bcfa28bde9cdec0201b591f29f9e09 100644
+--- a/src/main/java/net/minecraft/world/level/block/TrapDoorBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/TrapDoorBlock.java
+@@ -126,6 +126,7 @@ public class TrapDoorBlock extends HorizontalDirectionalBlock implements SimpleW
+                 }
+                 // CraftBukkit end
+                 boolean open = (Boolean) state.getValue(TrapDoorBlock.OPEN) != flag1; // Folia - break redstone on trapdoors early
++                if (world.kaiijuConfig.breakRedstoneOnTopOfTrapDoorsEarly) { // Kaiiju - trigger break redstone on trapdoors early
+                 // Folia 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
+@@ -144,6 +145,7 @@ public class TrapDoorBlock extends HorizontalDirectionalBlock implements SimpleW
+                     }
+                 }
+                 // Folia end - break redstone on trapdoors early
++                } // Kaiiju  - trigger break redstone on trapdoors early
+                 if (open) { // Folia - break redstone on trapdoors early
+                     state = (BlockState) state.setValue(TrapDoorBlock.OPEN, flag1);
+                     this.playSound((Player) null, world, pos, flag1);

patches/server/0016-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 49716190b784339b80c8a3ac8e5b13bc450284ee..440735caab3be903546638a3d01903720225c553 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -3612,7 +3612,7 @@ 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; // Paper - use distanceToSqr
++            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 2ee9e8e3c1a28c1823de8e1fe421cc1f3e72f384..d99d77536e4d49b53575ae30614c0ab5fdbd3f73 100644
+--- a/src/main/java/net/minecraft/world/level/BlockGetter.java
++++ b/src/main/java/net/minecraft/world/level/BlockGetter.java
+@@ -73,6 +73,17 @@ 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 a3b4b49ca8612a61bc2e7a1e2d2e942e7ebe1883..933373aaa7b1fa07862e2146e079abe91d126263 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -433,6 +433,91 @@ 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/server/0017-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 0c36bb47bd7040f1544817810e1c87157cdaff96..089c7bc00b8b4354d795cd864dc2c310bcf6de86 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/server/0018-Add-SIMD-utilities.patch

@@ -0,0 +1,143 @@
+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 4686019a152114e63e997ee103fc8424b24b4581..0851203a4bed670242afc5ac86562075f32693ab 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -58,6 +58,14 @@ dependencies {
+ }
+ 
+ val craftbukkitPackageVersion = "1_19_R3" // 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 426777730f77664c69bd0a084a9323d767ebc0ad..5272164b18c2ca999c4744aede32f4a4c72525ed 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/0019-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 f1fe094c4b4c5932ba656165bb1671020c1277a5..d3f6e5c873255d00160cf792898204a82a0ec5e8 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -208,8 +208,10 @@ 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 08e61a8940c142c68ed93359084ea46c7fd52310..f22b4ad629845462656834abb3e28d2c2588ace6 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -560,6 +560,11 @@ 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/0020-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 d52a522fe6d5c4375862691fa32450bc458ca38b..648aff395887d2f13846b1bbe59f4115206ad7cf 100644
+--- a/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
++++ b/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
+@@ -486,7 +486,12 @@ public class RegionizedPlayerChunkLoader {
+                     new ChunkPos(chunkX, chunkZ), new MutableObject<>(), false, true); // unloaded, loaded
+                 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 5ccfc95f51a899b1cd3f34af5e5bb05d902016b8..9c20bd199454b6032a6a90676d12526168b8dd0b 100644
+--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
++++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
+@@ -133,7 +133,12 @@ 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/0021-Toggle-fix-TripWire-state-inconsistency.patch

@@ -0,0 +1,39 @@
+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 ab56f61e9f77f743caabbd49d1e028e8ce296355..c344ceee85cd7fe3d8e68df49e7e57db497a5c4b 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 optimizeHoppers = true;
+     public boolean tickWhenEmpty = true;
+     public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
++    public boolean fixTripWireStateInconsistency = true;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -158,5 +159,6 @@ public class KaiijuWorldConfig {
+         optimizeHoppers = getBoolean("gameplay.optimize-hoppers", optimizeHoppers);
+         tickWhenEmpty = getBoolean("gameplay.tick-when-empty", tickWhenEmpty);
+         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 7f60175bf671d282c11e9084670d2bb900968255..baa6d2bb3a4bec920cb8b57cb08d706929985ea9 100644
+--- a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
+@@ -74,7 +74,7 @@ public class TripWireBlock extends Block {
+     @Override
+     public void onRemove(BlockState state, Level world, BlockPos pos, BlockState newState, boolean moved) {
+         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/0022-Entity-ticking-throttling-removal-to-prevent-lag.patch

@@ -0,0 +1,371 @@
+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 0851203a4bed670242afc5ac86562075f32693ab..e9b07e51aa5cd8a88b2cb3a2942247f06882d117 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -17,6 +17,7 @@ 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 c344ceee85cd7fe3d8e68df49e7e57db497a5c4b..2cc57d5a759ac3edcd2c3724f7f7b022b3e42f0f 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 tickWhenEmpty = true;
+     public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
+     public boolean fixTripWireStateInconsistency = true;
++    public boolean enableEntityThrottling = false;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -160,5 +161,6 @@ public class KaiijuWorldConfig {
+         tickWhenEmpty = getBoolean("gameplay.tick-when-empty", tickWhenEmpty);
+         breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
++        enableEntityThrottling = getBoolean("gameplay.enable-entity-throttling", enableEntityThrottling);
+     }
+ }
+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 5f609782fceda0fdc856123ca8d40d3f8b13b10b..cd4be18da781787fd7955b64668aa43136df9f34 100644
+--- a/src/main/java/io/papermc/paper/threadedregions/RegionizedWorldData.java
++++ b/src/main/java/io/papermc/paper/threadedregions/RegionizedWorldData.java
+@@ -296,6 +296,7 @@ public final class RegionizedWorldData {
+     private final ReferenceList<Entity> allEntities = 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 5272164b18c2ca999c4744aede32f4a4c72525ed..4cf41c7a27527e9a3c2fb8b530209f960b3529b1 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 cbb7dce873f0aa1ae7f85a6f0985bbe8d66a54ae..ee6db05a09a6fc6662a30f80791948f48ccefb66 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -768,6 +768,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                 } // Folia end - region threading
+             }
+ 
++            if (kaiijuConfig.enableEntityThrottling) regionizedWorldData.entityThrottler.tickLimiterStart(); // Kaiiju
+             org.spigotmc.ActivationRange.activateEntities(this); // Spigot
+             timings.entityTick.startTiming(); // Spigot
+             regionizedWorldData.forEachTickingEntity((entity) -> { // Folia - regionised ticking
+@@ -790,6 +791,13 @@ 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.remove(Entity.RemovalReason.DISCARDED);
++                                if (throttle.skip) return;
++                            }
++                            // Kaiiju end
+                             gameprofilerfiller.push("tick");
+                             this.guardEntityTick(this::tickNonPassenger, entity);
+                             gameprofilerfiller.pop();
+@@ -797,6 +805,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                     }
+                 }
+             });
++            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 79a004dda72365afddb80fcd730828e351d7cce1..919e6856a966240c7dd4849dd947fb7c1136e643 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/0023-Toggle-safe-teleportation.patch

@@ -0,0 +1,55 @@
+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 2cc57d5a759ac3edcd2c3724f7f7b022b3e42f0f..915ac0ab2fc4ee2cdeeaac821a28ed861f9e6c12 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -153,6 +153,7 @@ public class KaiijuWorldConfig {
+     public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
+     public boolean fixTripWireStateInconsistency = true;
+     public boolean enableEntityThrottling = false;
++    public boolean safeTeleporting = true;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -162,5 +163,6 @@ public class KaiijuWorldConfig {
+         breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
+         enableEntityThrottling = getBoolean("gameplay.enable-entity-throttling", enableEntityThrottling);
++        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 f22b4ad629845462656834abb3e28d2c2588ace6..7af60ebb91fb39374355c64396b6adc48b2a5f89 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -3826,6 +3826,7 @@ 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..aee4ae51a73ac3c74bf4b3db23247b0eb45c2d7a 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/0024-Toggle-sand-duplication.patch

@@ -0,0 +1,47 @@
+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 915ac0ab2fc4ee2cdeeaac821a28ed861f9e6c12..91749e471488233dd4f2515b1ff51331dea90f53 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -154,6 +154,7 @@ public class KaiijuWorldConfig {
+     public boolean fixTripWireStateInconsistency = true;
+     public boolean enableEntityThrottling = false;
+     public boolean safeTeleporting = true;
++    public boolean sandDuplication = false;
+ 
+     private void gameplaySettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("gameplay.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -164,5 +165,6 @@ public class KaiijuWorldConfig {
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
+         enableEntityThrottling = getBoolean("gameplay.enable-entity-throttling", enableEntityThrottling);
+         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 c8d125955754e27da54d95fb5b1cea39ca54b618..ffe82c153602babb679dee29d20e807a771a00ce 100644
+--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
++++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+@@ -131,7 +131,7 @@ 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
+@@ -148,7 +148,7 @@ 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/0025-Vanilla-end-portal-teleportation.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: 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 7af60ebb91fb39374355c64396b6adc48b2a5f89..4e442c605c281900dda18088cade2a719bf6e4ee 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -3914,10 +3914,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                         (chunks) -> {
+                             ServerLevel.makeObsidianPlatform(destination, null, targetPos);
+ 
++                            // 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
+                             );
+                         }
+                     );

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() {