Update upstream (Folia)

* Linear flusher

* Use a queue & a single thread

* Customizable flusher thread number

* Use try statements

README.md

@@ -11,28 +11,40 @@
 
 ## Features
 
-### Primary
-- **Xymb Linear Format**: Saves about 50% of disk space in OW/Nether and 95% in The End.
-- **Auto update**: Automatic upstream updates.
-
 ### Notable
-- **Entity throttling & removal**: Tweak entity tick frequency & max entity per region.
+- **Xymb Linear Format**: A Region file format that reduces disk space usage by about 50%.
+- **Async Pathfinding**: Petal async pathfinding fixed & reworked.
 - **Technical Minecraft**: Enable Vanilla exploits such as sand duping, RNG manipulation...
 
+### Other
+- **Small optimizations**: Increase server efficiency by disabling unnecessary features.
+- **Commands**: Restore few commands that were previously removed by Folia.
+
 ### Configuration
 
 ```yaml
+region-format:
+  linear:
+    flush-frequency: 10
+    flush-max-threads: 1
 network:
   send-null-entity-packets: true
   alternate-keepalive: false
+  kick-player-on-bad-packet: true
 optimization:
   disable-vanish-api: false
   disable-player-stats: false
   disable-arm-swing-event: false
-  disable-ensure-tick-thread-check: false
+  async-path-processing:
+    enable: false
+    max-threads: 0
+    keepalive: 60
 gameplay:
   server-mod-name: Kaiiju
   shared-random-for-players: true
+unsupported:
+  disable-ensure-tick-thread-checks: false
+  global-event-synchronization: false
 world-settings:
   default:
     region-format:
@@ -42,25 +54,29 @@ world-settings:
         crash-on-broken-symlink: true
     optimization:
       shulker-box-drop-contents-when-destroyed: true
+      optimize-hoppers: true
+      tick-when-empty: true
       enable-entity-throttling: false
       disable-achievements: false
       disable-creatures-spawn-events: false
       disable-dolphin-swim-to-treasure: false
     gameplay:
       fix-void-trading: true
-      optimize-hoppers: true
-      tick-when-empty: true
       break-redstone-on-top-of-trap-doors-early: true
       fix-tripwire-state-inconsistency: true
       safe-teleportation: true
       sand-duplication: false
+      teleport-async-on-high-velocity: false
 ```
 Documentation: [Kaiiju Wiki](https://github.com/KaiijuMC/Kaiiju/wiki/Configuration)
 
 ### Roadmap
-- **Static view distance**: Reduce RAM usage / Region size with a "static" view distance.
-- **Native world conversion**: Convert region file format at startup.
 - **Stash deduplication**: Make giant dupe stashes possible and lagless.
+- **Multithreaded Tracker**: Rework Petal multithreaded tracker.
+
+## Open to contributions
+- **Native world conversion**: Convert region file format at startup.
+- **Performance patch**: Any significative performance patch.
 
 ## Building
 

gradle.properties

@@ -2,7 +2,7 @@ group = dev.kaiijumc.kaiiju
 version = 1.20.1-R0.1-SNAPSHOT
 mcVersion = 1.20.1
 
-foliaRef = 7c6e2514d2ecd9f5f7db911aab29bfe7f373eb9e
+foliaRef = edafbcef6884cffe493e62cd71f4957708fba7ff
 
 org.gradle.caching=true
 org.gradle.parallel=true

patches/api/0001-Kaiiju-Configuration.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Kaiiju Configuration
 
 
 diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
-index 1ef4cf3b19d58565e052829358eb5902f070ae02..490a70920dca1cfde4796cc2fb69fdb98942bbdc 100644
+index b6a8217b97842cd07af24fadb21e0e44226e5bb9..ce7dcbc0709839457df357484620f21c3d7c19c5 100644
 --- a/src/main/java/org/bukkit/Server.java
 +++ b/src/main/java/org/bukkit/Server.java
-@@ -2007,6 +2007,13 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
+@@ -2121,6 +2121,13 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
          }
          // Paper end
  

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

@@ -7,10 +7,10 @@ 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 511ec694f3336a5d7276d171dd2345ed2ea1acac..10c7f5c6fc0e5cb8aafbe125dd68635a37b7b1b9 100644
+index f636bdf1075fa784ce7ee25478d4d94bacb05677..2da522f89a7c44208ca1ba9139efe723a519fabc 100644
 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
 +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
-@@ -3663,7 +3663,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+@@ -3661,7 +3661,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
              Vec3 vec3d1 = new Vec3(entity.getX(), entity.getEyeY(), entity.getZ());
  
              // Paper - diff on change - used in CraftLivingEntity#hasLineOfSight(Location) and CraftWorld#lineOfSightExists

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

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

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

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

patches/server/0001-Rebranding.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Rebranding
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index 215366d7cc3720805d2dfde0662372ecede8383c..24f16ac70f993b9645ff01473633f542e57b0fc0 100644
+index 9ee90bc753e65f9dd532f28ec75cc16bf16486c8..4ce50523b1d5f2110fa873f4d3cfc9839ad606c7 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -8,7 +8,7 @@ plugins {
+@@ -14,7 +14,7 @@ val alsoShade: Configuration by configurations.creating
  
  dependencies {
      // Folia start
@@ -17,7 +17,7 @@ index 215366d7cc3720805d2dfde0662372ecede8383c..24f16ac70f993b9645ff01473633f542
      implementation("io.papermc.paper:paper-mojangapi:1.19.3-R0.1-SNAPSHOT") {
          exclude("io.papermc.paper", "paper-api")
      }
-@@ -68,7 +68,7 @@ tasks.jar {
+@@ -76,7 +76,7 @@ tasks.jar {
          attributes(
              "Main-Class" to "org.bukkit.craftbukkit.Main",
              "Implementation-Title" to "CraftBukkit",
@@ -27,7 +27,7 @@ index 215366d7cc3720805d2dfde0662372ecede8383c..24f16ac70f993b9645ff01473633f542
              "Specification-Title" to "Bukkit",
              "Specification-Version" to project.version,
 diff --git a/src/main/java/com/destroystokyo/paper/Metrics.java b/src/main/java/com/destroystokyo/paper/Metrics.java
-index 58dc84b7b3b04c2d0b00fc5fac5303d3378b3467..a128b1fabd4aadfe26a8375903c0451d7a65983a 100644
+index cb60d58d4a7556dd896f31d0cd249f860bb3ef84..c9ccc016044f2b179c291d9d5b2a43967cca119a 100644
 --- a/src/main/java/com/destroystokyo/paper/Metrics.java
 +++ b/src/main/java/com/destroystokyo/paper/Metrics.java
 @@ -593,7 +593,7 @@ public class Metrics {
@@ -132,10 +132,10 @@ index abe37c7c3c6f5ab73afd738ec78f06d7e4d2ed96..52fc6bb99f6024273c7438d01314b576
          stringbuilder.append(CrashReport.DATE_TIME_FORMATTER.format(ZonedDateTime.now()));
          stringbuilder.append("\n");
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index 11ff1bc559316da426070867f045720ebd8c1962..cc1a7c4d38874ec218f7151685ae6cc00295c2e4 100644
+index 75eb95c330d6ab7ac1e4a69da13695bbd40f894e..a6f1068884669cfedfe8df40506b011b8b411489 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -995,7 +995,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -994,7 +994,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
          shutdownThread = Thread.currentThread();
          org.spigotmc.WatchdogThread.doStop(); // Paper
          if (false && !isSameThread()) { // Folia - region threading
@@ -144,7 +144,7 @@ index 11ff1bc559316da426070867f045720ebd8c1962..cc1a7c4d38874ec218f7151685ae6cc0
              while (this.getRunningThread().isAlive()) {
                  this.getRunningThread().stop();
                  try {
-@@ -1812,7 +1812,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -1811,7 +1811,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
  
      @DontObfuscate
      public String getServerModName() {
@@ -154,10 +154,10 @@ index 11ff1bc559316da426070867f045720ebd8c1962..cc1a7c4d38874ec218f7151685ae6cc0
  
      public SystemReport fillSystemReport(SystemReport details) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-index 20af7484bf570d28cd9723fdbb1ec07657117367..753594551faa1bff4317386c3df927f486900dab 100644
+index a8bf1f542ab20eb7c40c80b5e42b55982677373d..a96f743e479a05d3240884a3c0e871caec573bbe 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-@@ -261,7 +261,7 @@ import javax.annotation.Nullable; // Paper
+@@ -265,7 +265,7 @@ import javax.annotation.Nullable; // Paper
  import javax.annotation.Nonnull; // Paper
  
  public final class CraftServer implements Server {
@@ -167,10 +167,10 @@ index 20af7484bf570d28cd9723fdbb1ec07657117367..753594551faa1bff4317386c3df927f4
      private final String bukkitVersion = Versioning.getBukkitVersion();
      private final Logger logger = Logger.getLogger("Minecraft");
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
-index 564c72d6351721505dbffaf5af732db2dd3210ac..957ae18874710ad0e10f4210fc819fe555437c01 100644
+index d2ab898c0f3902f5f0f9847232dac244b4095854..7c918d99c8629da0ef4242f0b6a1778a0fd696b6 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
-@@ -886,7 +886,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+@@ -920,7 +920,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
              return EntityCategory.WATER;
          }
  

patches/server/0002-Empty-configuration.patch

@@ -410,7 +410,7 @@ index 0000000000000000000000000000000000000000..6fac162e0ec057af9f3336314d566355
 +}
 \ 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 78ada86028bac06b62a7d70776a29705a3b11a06..ee75d828174ac1c84931bc087472fefd76073bdb 100644
+index c5dfd99a38a79fd19a2bf85fa297a28e40612b51..99b3db382a164fbe3afddb08f5317d463ceda765 100644
 --- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
 +++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
 @@ -218,6 +218,15 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
@@ -430,7 +430,7 @@ index 78ada86028bac06b62a7d70776a29705a3b11a06..ee75d828174ac1c84931bc087472fefd
          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 8cf4428d8140fd03f0ad8fa1d148a04d8caefda8..fb71843793e699b2ccfaa3b7e4c2bb7d4826a706 100644
+index 916df0c8d263f90e04564c5f512fd5ed5eaaa6d5..5ffe01a20e929554b4bde0b6d453472261686f54 100644
 --- a/src/main/java/net/minecraft/world/level/Level.java
 +++ b/src/main/java/net/minecraft/world/level/Level.java
 @@ -166,6 +166,8 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
@@ -451,10 +451,10 @@ index 8cf4428d8140fd03f0ad8fa1d148a04d8caefda8..fb71843793e699b2ccfaa3b7e4c2bb7d
          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 753594551faa1bff4317386c3df927f486900dab..714db83db78d5bd66d8353bf9b8c4a6b1734fce4 100644
+index a96f743e479a05d3240884a3c0e871caec573bbe..3167ef56973578bdeeee96d545b81d41629fe994 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-@@ -1094,6 +1094,7 @@ public final class CraftServer implements Server {
+@@ -1098,6 +1098,7 @@ public final class CraftServer implements Server {
  
          org.spigotmc.SpigotConfig.init((File) console.options.valueOf("spigot-settings")); // Spigot
          this.console.paperConfigurations.reloadConfigs(this.console);
@@ -462,7 +462,7 @@ index 753594551faa1bff4317386c3df927f486900dab..714db83db78d5bd66d8353bf9b8c4a6b
          for (ServerLevel world : this.console.getAllLevels()) {
              // world.serverLevelData.setDifficulty(config.difficulty); // Paper - per level difficulty
              world.setSpawnSettings(world.serverLevelData.getDifficulty() != Difficulty.PEACEFUL && config.spawnMonsters, config.spawnAnimals); // Paper - per level difficulty (from MinecraftServer#setDifficulty(ServerLevel, Difficulty, boolean))
-@@ -1109,6 +1110,7 @@ public final class CraftServer implements Server {
+@@ -1113,6 +1114,7 @@ public final class CraftServer implements Server {
                  }
              }
              world.spigotConfig.init(); // Spigot
@@ -470,7 +470,7 @@ index 753594551faa1bff4317386c3df927f486900dab..714db83db78d5bd66d8353bf9b8c4a6b
          }
  
          Plugin[] pluginClone = pluginManager.getPlugins().clone(); // Paper
-@@ -1124,6 +1126,7 @@ public final class CraftServer implements Server {
+@@ -1128,6 +1130,7 @@ public final class CraftServer implements Server {
          this.reloadData();
          org.spigotmc.SpigotConfig.registerCommands(); // Spigot
          io.papermc.paper.command.PaperCommands.registerCommands(this.console); // Paper
@@ -478,7 +478,7 @@ index 753594551faa1bff4317386c3df927f486900dab..714db83db78d5bd66d8353bf9b8c4a6b
          this.overrideAllCommandBlockCommands = this.commandsConfiguration.getStringList("command-block-overrides").contains("*");
          this.ignoreVanillaPermissions = this.commandsConfiguration.getBoolean("ignore-vanilla-permissions");
  
-@@ -2893,6 +2896,13 @@ public final class CraftServer implements Server {
+@@ -2975,6 +2978,13 @@ public final class CraftServer implements Server {
              return CraftServer.this.console.paperConfigurations.createLegacyObject(CraftServer.this.console);
          }
  
@@ -493,7 +493,7 @@ index 753594551faa1bff4317386c3df927f486900dab..714db83db78d5bd66d8353bf9b8c4a6b
          public void restart() {
              org.spigotmc.RestartCommand.restart();
 diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
-index 717e292040ed7779eb4b6c5fa26665d3df9024e7..d8ca697663ace353e88bfabc8997b58230d3d811 100644
+index 776b7fc26fe96b69be260bbd36efae147d988640..a090c16d53fcb220687a18aa37ca82663f4660c7 100644
 --- a/src/main/java/org/bukkit/craftbukkit/Main.java
 +++ b/src/main/java/org/bukkit/craftbukkit/Main.java
 @@ -173,6 +173,14 @@ public class Main {

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

@@ -5,18 +5,15 @@ Subject: [PATCH] Region format configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index 7da7e0aeb5eac9ac73a3570e716f1ceb11fd7027..b86c90cc3601e666998cfa12f44515f605bb53eb 100644
+index 7da7e0aeb5eac9ac73a3570e716f1ceb11fd7027..f08bcc9ae1770fa847d8a5e873a554bef5485100 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -192,4 +192,10 @@ public class KaiijuConfig {
+@@ -192,4 +192,7 @@ public class KaiijuConfig {
          }
          return builder.build();
      }
 +
-+    public static boolean regionFormatDebug = false;
-+
 +    private static void regionFormatSettings() {
-+        regionFormatDebug = getBoolean("region-format.debug", regionFormatDebug);
 +    }
  }
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
@@ -85,10 +82,10 @@ index 0000000000000000000000000000000000000000..7164d9cd03186f0657783f83de3d6435
 +    }
 +}
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index cc1a7c4d38874ec218f7151685ae6cc00295c2e4..06233380f7580726753de34c1fb23d6347c9ac94 100644
+index a6f1068884669cfedfe8df40506b011b8b411489..7243443d4bf24ad0b32b8a76d9b8701cca8612a7 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -893,7 +893,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -892,7 +892,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
              // Paper start - rewrite chunk system
              worldserver.save((ProgressListener) null, flush, worldserver.noSave && !force, close);
              if (flush) {
@@ -97,7 +94,7 @@ index cc1a7c4d38874ec218f7151685ae6cc00295c2e4..06233380f7580726753de34c1fb23d63
              }
              // Paper end - rewrite chunk system
          }
-@@ -917,7 +917,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -916,7 +916,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                  //MinecraftServer.LOGGER.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", worldserver2.getChunkSource().chunkMap.getStorageName()); // Paper - move up
              }
  

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

@@ -9,10 +9,10 @@ This format saves about 50% of disk space.
 Documentation: https://github.com/xymb-endcrystalme/LinearRegionFileFormatTools
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index 6d6b1973783604369c7ff95d552c43edf149a46a..a26cc214dccab8c9422f9a45e2a5eeda374c0ead 100644
+index 4ce50523b1d5f2110fa873f4d3cfc9839ad606c7..99f31c4f5bf3064e483d5f387778c05742197e49 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -13,6 +13,10 @@ dependencies {
+@@ -19,6 +19,10 @@ dependencies {
          exclude("io.papermc.paper", "paper-api")
      }
      // Folia end
@@ -38,6 +38,34 @@ index f2c27e0ac65be4b75c1d86ef6fd45fdb538d96ac..00724993d0448454d14a47652b039b88
  
          public static final class InProgressWrite {
              public long writeCounter;
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index f08bcc9ae1770fa847d8a5e873a554bef5485100..b7f43cce80742aa0cd523e930772ff84946f3eef 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -15,7 +15,6 @@ import java.io.IOException;
+ import java.lang.reflect.InvocationTargetException;
+ import java.lang.reflect.Method;
+ import java.lang.reflect.Modifier;
+-import java.util.Arrays;
+ import java.util.HashMap;
+ import java.util.List;
+ import java.util.Map;
+@@ -193,6 +192,15 @@ public class KaiijuConfig {
+         return builder.build();
+     }
+ 
++    public static int linearFlushFrequency = 10;
++    public static int linearFlushThreads = 1;
++
+     private static void regionFormatSettings() {
++        linearFlushFrequency = getInt("region-format.linear.flush-frequency", linearFlushFrequency);
++        linearFlushThreads = getInt("region-format.linear.flush-max-threads", linearFlushThreads);
++        if (linearFlushThreads < 0)
++            linearFlushThreads = Math.max(Runtime.getRuntime().availableProcessors() + linearFlushThreads, 1);
++        else
++            linearFlushThreads = Math.max(linearFlushThreads, 1);
+     }
+ }
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/AbstractRegionFile.java b/src/main/java/dev/kaiijumc/kaiiju/region/AbstractRegionFile.java
 new file mode 100644
 index 0000000000000000000000000000000000000000..249303116d3cfadd078ebf0ae6e44bf99eed6a47
@@ -112,10 +140,10 @@ index 0000000000000000000000000000000000000000..dcfbabf54b19a4c29d5c95830242c5c2
 +}
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4bf89d0727
+index 0000000000000000000000000000000000000000..e40989889f3821bb7484fc0bae5d94b033013904
 --- /dev/null
 +++ b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFile.java
-@@ -0,0 +1,337 @@
+@@ -0,0 +1,316 @@
 +package dev.kaiijumc.kaiiju.region;
 +
 +import com.github.luben.zstd.ZstdInputStream;
@@ -138,65 +166,57 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +import java.util.ArrayList;
 +import java.util.Arrays;
 +import java.util.List;
++import java.util.concurrent.atomic.AtomicBoolean;
 +import java.util.concurrent.locks.ReentrantLock;
 +
-+public class LinearRegionFile extends Thread implements AbstractRegionFile {
++public class LinearRegionFile implements AbstractRegionFile, AutoCloseable {
 +    private static final long SUPERBLOCK = -4323716122432332390L;
 +    private static final byte VERSION = 2;
 +    private static final int HEADER_SIZE = 32;
 +    private static final int FOOTER_SIZE = 8;
 +    private static final Logger LOGGER = LogUtils.getLogger();
 +    private static final List<Byte> SUPPORTED_VERSIONS = Arrays.asList((byte) 1, (byte) 2);
-+
++    private static final LinearRegionFileFlusher linearRegionFileFlusher = new LinearRegionFileFlusher();
 +
 +    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];
 +
 +    private final LZ4Compressor compressor;
 +    private final LZ4FastDecompressor decompressor;
 +
-+    private boolean markedToSave = false;
-+    private boolean close = false;
-+
 +    public final ReentrantLock fileLock = new ReentrantLock(true);
-+    public Path regionFile;
-+
 +    private final int compressionLevel;
 +
-+    public Path getRegionFile() {
++    private AtomicBoolean markedToSave = new AtomicBoolean(false);
-+        return this.regionFile;
++    public boolean closed = false;
-+    }
++    public Path path;
 +
-+    public ReentrantLock getFileLock() {
-+        return this.fileLock;
-+    }
 +
 +    public LinearRegionFile(Path file, int compression) throws IOException {
-+        this.regionFile = file;
++        this.path = file;
 +        this.compressionLevel = compression;
-+
 +        this.compressor = LZ4Factory.fastestInstance().fastCompressor();
 +        this.decompressor = LZ4Factory.fastestInstance().fastDecompressor();
 +
-+        File regionFile = new File(this.regionFile.toString());
++        File regionFile = new File(this.path.toString());
 +
 +        Arrays.fill(this.bufferUncompressedSize, 0);
 +
-+        if(regionFile.canRead()) {
++        if (!regionFile.canRead()) return;
-+            FileInputStream fileStream = new FileInputStream(regionFile);
++
-+            DataInputStream rawDataStream = new DataInputStream(fileStream);
++        try (FileInputStream fileStream = new FileInputStream(regionFile);
++             DataInputStream rawDataStream = new DataInputStream(fileStream)) {
 +
 +            long superBlock = rawDataStream.readLong();
 +            if (superBlock != SUPERBLOCK)
-+                throw new RuntimeException("Invalid superblock: " + superBlock + " file " + file);
++                throw new RuntimeException("Invalid superblock: " + superBlock + " in " + file);
 +
 +            byte version = rawDataStream.readByte();
 +            if (!SUPPORTED_VERSIONS.contains(version))
-+                throw new RuntimeException("Invalid version: " + version + " file " + file);
++                throw new RuntimeException("Invalid version: " + version + " in " + file);
 +
 +            // Skip newestTimestamp (Long) + Compression level (Byte) + Chunk count (Short): Unused.
 +            rawDataStream.skipBytes(11);
@@ -204,7 +224,7 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +            int dataCount = rawDataStream.readInt();
 +            long fileLength = file.toFile().length();
 +            if (fileLength != HEADER_SIZE + dataCount + FOOTER_SIZE)
-+                throw new IOException("Invalid file length: " + this.regionFile + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
++                throw new IOException("Invalid file length: " + this.path + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
 +
 +            rawDataStream.skipBytes(8); // Skip data hash (Long): Unused.
 +
@@ -213,133 +233,124 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +
 +            superBlock = rawDataStream.readLong();
 +            if (superBlock != SUPERBLOCK)
-+                throw new IOException("Footer superblock invalid " + this.regionFile);
++                throw new IOException("Footer superblock invalid " + this.path);
 +
-+            DataInputStream dataStream = new DataInputStream(new ZstdInputStream(new ByteArrayInputStream(rawCompressed)));
++            try (DataInputStream dataStream = new DataInputStream(new ZstdInputStream(new ByteArrayInputStream(rawCompressed)))) {
 +
-+            int[] starts = new int[1024];
++                int[] starts = new int[1024];
-+            for(int i = 0; i < 1024; i++) {
++                for (int i = 0; i < 1024; i++) {
-+                starts[i] = dataStream.readInt();
++                    starts[i] = dataStream.readInt();
-+                dataStream.skipBytes(4); // Skip timestamps (Int): Unused.
++                    dataStream.skipBytes(4); // Skip timestamps (Int): Unused.
-+            }
-+
-+            for(int i = 0; i < 1024; i++) {
-+                if(starts[i] > 0) {
-+                    int size = starts[i];
-+                    byte[] b = new byte[size];
-+                    dataStream.readFully(b, 0, size);
-+
-+                    int maxCompressedLength = this.compressor.maxCompressedLength(size);
-+                    byte[] compressed = new byte[maxCompressedLength];
-+                    int compressedLength = this.compressor.compress(b, 0, size, compressed, 0, maxCompressedLength);
-+                    b = new byte[compressedLength];
-+                    System.arraycopy(compressed, 0, b, 0, compressedLength);
-+
-+                    this.buffer[i] = b;
-+                    this.bufferUncompressedSize[i] = size;
 +                }
-+            }
-+        }
-+        this.start();
-+    }
 +
-+    private synchronized void markToSave() {
++                for (int i = 0; i < 1024; i++) {
-+        synchronized(markedToSaveLock) {
++                    if (starts[i] > 0) {
-+            markedToSave = true;
++                        int size = starts[i];
-+        }
++                        byte[] b = new byte[size];
-+    }
++                        dataStream.readFully(b, 0, size);
 +
-+    private synchronized boolean isMarkedToSave() {
++                        int maxCompressedLength = this.compressor.maxCompressedLength(size);
-+        synchronized(markedToSaveLock) {
++                        byte[] compressed = new byte[maxCompressedLength];
-+            if(markedToSave) {
++                        int compressedLength = this.compressor.compress(b, 0, size, compressed, 0, maxCompressedLength);
-+                markedToSave = false;
++                        b = new byte[compressedLength];
-+                return true;
++                        System.arraycopy(compressed, 0, b, 0, compressedLength);
-+            }
-+            return false;
-+        }
-+    }
 +
-+    public void run() {
++                        this.buffer[i] = b;
-+        try {
++                        this.bufferUncompressedSize[i] = size;
-+            while(true) {
-+                if(markedToSave) {
-+                    try {
-+                        flush();
-+                    } catch(IOException ex) {
-+                        LOGGER.error("Region file " + this.regionFile.toAbsolutePath() + " flush failed");
 +                    }
 +                }
-+                for(int i = 0 ; i < 100 ; i++) {
-+                    Thread.sleep(100);
-+                    if(close) return;
-+                }
 +            }
-+        } catch(InterruptedException ignored) {}
++        }
 +    }
 +
-+    public synchronized boolean doesChunkExist(ChunkPos pos) throws Exception {
++    public Path getRegionFile() {
++        return this.path;
++    }
++
++    public ReentrantLock getFileLock() {
++        return this.fileLock;
++    }
++
++    public void flush() throws IOException {
++        if (isMarkedToSave()) flushWrapper(); // sync
++    }
++
++    private void markToSave() {
++        linearRegionFileFlusher.scheduleSave(this);
++        markedToSave.set(true);
++    }
++
++    public boolean isMarkedToSave() {
++        return markedToSave.getAndSet(false);
++    }
++
++    public void flushWrapper() {
++        try {
++            save();
++        } catch (IOException e) {
++            LOGGER.error("Failed to flush region file " + path.toAbsolutePath(), e);
++        }
++    }
++
++    public boolean doesChunkExist(ChunkPos pos) throws Exception {
 +        throw new Exception("doesChunkExist is a stub");
 +    }
 +
-+    public synchronized void flush() throws IOException {
++    private synchronized void save() throws IOException {
-+        if(!isMarkedToSave()) return;
-+
 +        long timestamp = getTimestamp();
 +        short chunkCount = 0;
 +
-+        File tempFile = new File(regionFile.toString() + ".tmp");
++        File tempFile = new File(path.toString() + ".tmp");
-+        FileOutputStream fileStream = new FileOutputStream(tempFile);
 +
-+        ByteArrayOutputStream zstdByteArray = new ByteArrayOutputStream();
++        try (FileOutputStream fileStream = new FileOutputStream(tempFile);
-+        ZstdOutputStream zstdStream = new ZstdOutputStream(zstdByteArray, this.compressionLevel);
++             ByteArrayOutputStream zstdByteArray = new ByteArrayOutputStream();
-+        zstdStream.setChecksum(true);
++             ZstdOutputStream zstdStream = new ZstdOutputStream(zstdByteArray, this.compressionLevel);
-+        DataOutputStream zstdDataStream = new DataOutputStream(zstdStream);
++             DataOutputStream zstdDataStream = new DataOutputStream(zstdStream);
-+        DataOutputStream dataStream = new DataOutputStream(fileStream);
++             DataOutputStream dataStream = new DataOutputStream(fileStream)) {
 +
-+        dataStream.writeLong(SUPERBLOCK);
++            dataStream.writeLong(SUPERBLOCK);
-+        dataStream.writeByte(VERSION);
++            dataStream.writeByte(VERSION);
-+        dataStream.writeLong(timestamp);
++            dataStream.writeLong(timestamp);
-+        dataStream.writeByte(this.compressionLevel);
++            dataStream.writeByte(this.compressionLevel);
 +
-+        ArrayList<byte[]> byteBuffers = new ArrayList<>();
++            ArrayList<byte[]> byteBuffers = new ArrayList<>();
-+        for(int i = 0; i < 1024; i++) {
++            for (int i = 0; i < 1024; i++) {
-+            if(this.bufferUncompressedSize[i] != 0) {
++                if (this.bufferUncompressedSize[i] != 0) {
-+                chunkCount += 1;
++                    chunkCount += 1;
-+                byte[] content = new byte[bufferUncompressedSize[i]];
++                    byte[] content = new byte[bufferUncompressedSize[i]];
-+                this.decompressor.decompress(buffer[i], 0, content, 0, bufferUncompressedSize[i]);
++                    this.decompressor.decompress(buffer[i], 0, content, 0, bufferUncompressedSize[i]);
 +
-+                byteBuffers.add(content);
++                    byteBuffers.add(content);
-+            } else byteBuffers.add(null);
++                } else byteBuffers.add(null);
++            }
++            for (int i = 0; i < 1024; i++) {
++                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)
++                    zstdDataStream.write(byteBuffers.get(i), 0, byteBuffers.get(i).length);
++            }
++            zstdDataStream.close();
++
++            dataStream.writeShort(chunkCount);
++
++            byte[] compressed = zstdByteArray.toByteArray();
++
++            dataStream.writeInt(compressed.length);
++            dataStream.writeLong(0);
++
++            dataStream.write(compressed, 0, compressed.length);
++            dataStream.writeLong(SUPERBLOCK);
++
++            dataStream.flush();
++            fileStream.getFD().sync();
++            fileStream.getChannel().force(true); // Ensure atomicity on Btrfs
 +        }
-+        for(int i = 0; i < 1024; i++) {
++        Files.move(tempFile.toPath(), this.path, StandardCopyOption.REPLACE_EXISTING);
-+            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)
-+                zstdDataStream.write(byteBuffers.get(i), 0, byteBuffers.get(i).length);
-+        }
-+        zstdDataStream.close();
-+
-+        dataStream.writeShort(chunkCount);
-+
-+        byte[] compressed = zstdByteArray.toByteArray();
-+
-+        dataStream.writeInt(compressed.length);
-+        dataStream.writeLong(0);
-+
-+        dataStream.write(compressed, 0, compressed.length);
-+        dataStream.writeLong(SUPERBLOCK);
-+
-+        dataStream.flush();
-+        fileStream.getFD().sync();
-+        fileStream.getChannel().force(true); // Ensure atomicity on Btrfs
-+        dataStream.close();
-+
-+        fileStream.close();
-+        Files.move(tempFile.toPath(), this.regionFile, StandardCopyOption.REPLACE_EXISTING);
 +    }
 +
++
 +    public void setStatus(int x, int z, ChunkStatus status) {
 +        this.statuses[getChunkIndex(x, z)] = status;
 +    }
@@ -360,7 +371,7 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +            this.chunkTimestamps[index] = getTimestamp();
 +            this.bufferUncompressedSize[getChunkIndex(pos.x, pos.z)] = uncompressedSize;
 +        } catch (IOException e) {
-+            LOGGER.error("Chunk write IOException " + e + " " + this.regionFile);
++            LOGGER.error("Chunk write IOException " + e + " " + this.path);
 +        }
 +        markToSave();
 +    }
@@ -370,7 +381,6 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +    }
 +
 +    private class ChunkBuffer extends ByteArrayOutputStream {
-+
 +        private final ChunkPos pos;
 +
 +        public ChunkBuffer(ChunkPos chunkcoordintpair) {
@@ -423,12 +433,9 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +    }
 +
 +    public void close() throws IOException {
-+        close = true;
++        if (closed) return;
-+        try {
++        closed = true;
-+            flush();
++        flush(); // sync
-+        } catch(IOException e) {
-+            throw new IOException("Region flush IOException " + e + " " + this.regionFile);
-+        }
 +    }
 +
 +    private static int getChunkIndex(int x, int z) {
@@ -446,13 +453,64 @@ index 0000000000000000000000000000000000000000..b7ce89429675bde7f037793305275f4b
 +    public void setOversized(int x, int z, boolean something) {}
 +
 +    public CompoundTag getOversizedData(int x, int z) throws IOException {
-+        throw new IOException("getOversizedData is a stub " + this.regionFile);
++        throw new IOException("getOversizedData is a stub " + this.path);
 +    }
 +
 +    public boolean isOversized(int x, int z) {
 +        return false;
 +    }
 +}
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFileFlusher.java b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFileFlusher.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..a5731e37aa63004476dd6db67191d5be6ce480be
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/region/LinearRegionFileFlusher.java
+@@ -0,0 +1,45 @@
++package dev.kaiijumc.kaiiju.region;
++
++import com.google.common.util.concurrent.ThreadFactoryBuilder;
++import java.util.Queue;
++import java.util.concurrent.*;
++import dev.kaiijumc.kaiiju.KaiijuConfig;
++import org.bukkit.Bukkit;
++
++public class LinearRegionFileFlusher {
++    private final Queue<LinearRegionFile> savingQueue = new LinkedBlockingQueue<>();
++    private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(
++        new ThreadFactoryBuilder()
++            .setNameFormat("linear-flush-scheduler")
++            .build()
++    );
++    private final ExecutorService executor = Executors.newFixedThreadPool(
++        KaiijuConfig.linearFlushThreads,
++        new ThreadFactoryBuilder()
++            .setNameFormat("linear-flusher-%d")
++            .build()
++    );
++
++    public LinearRegionFileFlusher() {
++        Bukkit.getLogger().info("Using " + KaiijuConfig.linearFlushThreads + " threads for linear region flushing.");
++        scheduler.scheduleAtFixedRate(this::pollAndFlush, 0L, KaiijuConfig.linearFlushFrequency, TimeUnit.SECONDS);
++    }
++
++    public void scheduleSave(LinearRegionFile regionFile) {
++        if (savingQueue.contains(regionFile)) return;
++        savingQueue.add(regionFile);
++    }
++
++    private void pollAndFlush() {
++        while (!savingQueue.isEmpty()) {
++            LinearRegionFile regionFile = savingQueue.poll();
++            if (!regionFile.closed && regionFile.isMarkedToSave())
++                executor.execute(regionFile::flushWrapper);
++        }
++    }
++
++    public void shutdown() {
++        executor.shutdown();
++        scheduler.shutdown();
++    }
++}
 diff --git a/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java b/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
 index 8a11e10b01fa012b2f98b1c193c53251e848f909..61001e76b38f8647b33e73b5cc15b4b6785cf49a 100644
 --- a/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
@@ -540,7 +598,7 @@ index 513833c2ea23df5b079d157bc5cb89d5c9754c0b..abf5e2a06af9853b58ac9107cd6e9787
          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 916bfdfb13d8f8093e1908a7c35344b83d0ee0ac..61c6bc2859235874aefac71e9e55162f0a89f29f 100644
+index 6885961c7eaa07b8b25e48ca0e33e310379f6114..cb6b067d2ae8a11d8c75f2c7667145e0b7bd2b65 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -269,7 +269,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
@@ -561,7 +619,7 @@ index 916bfdfb13d8f8093e1908a7c35344b83d0ee0ac..61c6bc2859235874aefac71e9e55162f
          this.setViewDistance(viewDistance);
          // Paper start
          this.dataRegionManager = new io.papermc.paper.chunk.SingleThreadChunkRegionManager(this.level, 2, (1.0 / 3.0), 1, 6, "Data", DataRegionData::new, DataRegionSectionData::new);
-@@ -850,13 +850,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -848,13 +848,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
      // Paper start - chunk status cache "api"
      public ChunkStatus getChunkStatusOnDiskIfCached(ChunkPos chunkPos) {
@@ -577,7 +635,7 @@ index 916bfdfb13d8f8093e1908a7c35344b83d0ee0ac..61c6bc2859235874aefac71e9e55162f
  
          if (regionFile == null || !regionFileCache.chunkExists(chunkPos)) {
              return null;
-@@ -874,7 +874,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -872,7 +872,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
      }
  
      public void updateChunkStatusOnDisk(ChunkPos chunkPos, @Nullable CompoundTag compound) throws IOException {
@@ -587,21 +645,21 @@ index 916bfdfb13d8f8093e1908a7c35344b83d0ee0ac..61c6bc2859235874aefac71e9e55162f
          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 b126435b07572e7b8f41647a0179164b680e9e64..19fb8ca8a6f699ce596103070db726fcb427865e 100644
+index cf8f93734121e5c1959959f0ba13ee4e6db31959..e6e985e8e2c7cccb2c3395ae3fbc30072e1d48f0 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -426,8 +426,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -453,8 +453,8 @@ 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
++        public EntityRegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync) { // Kaiiju
 +            super(format, linearCompression, directory, dsync); // Kaiiju
          }
  
          protected void write(ChunkPos pos, net.minecraft.nbt.CompoundTag nbt) throws IOException {
-@@ -666,7 +666,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -693,7 +693,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
          // CraftBukkit end
          boolean flag2 = minecraftserver.forceSynchronousWrites();
          DataFixer datafixer = minecraftserver.getFixerUpper();
@@ -611,12 +669,12 @@ index b126435b07572e7b8f41647a0179164b680e9e64..19fb8ca8a6f699ce596103070db726fc
          // 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..ac35e7eb8cb5f19391a18eb9d6b5ba26769ce2f6 100644
+index e16ef1b7c0bfe6d6194c09f6787a50fd9b28f55e..3b02b7905fd16be28ba986302c1f99dfb5eb2ab8 100644
 --- a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
 +++ b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
 @@ -61,7 +61,7 @@ public class WorldUpgrader {
      private volatile int skipped;
-     private final Object2FloatMap<ResourceKey<LevelStem>> progressMap = Object2FloatMaps.synchronize(new Object2FloatOpenCustomHashMap(Util.identityStrategy())); // CraftBukkit
+     private final Object2FloatMap<ResourceKey<Level>> progressMap = Object2FloatMaps.synchronize(new Object2FloatOpenCustomHashMap(Util.identityStrategy()));
      private volatile Component status = Component.translatable("optimizeWorld.stage.counting");
 -    public static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.mca$");
 +    public static Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.(linear | mca)$"); // Kaiiju
@@ -624,8 +682,8 @@ index e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..ac35e7eb8cb5f19391a18eb9d6b5ba26
  
      public WorldUpgrader(LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, Registry<LevelStem> dimensionOptionsRegistry, boolean eraseCache) {
 @@ -116,7 +116,12 @@ public class WorldUpgrader {
-                 ResourceKey<LevelStem> resourcekey1 = (ResourceKey) iterator1.next(); // CraftBukkit
+                 ResourceKey<Level> resourcekey1 = (ResourceKey) iterator1.next();
-                 Path path = this.levelStorage.getDimensionPath((ResourceKey) null); // CraftBukkit
+                 Path path = this.levelStorage.getDimensionPath(resourcekey1);
  
 -                builder1.put(resourcekey1, new ChunkStorage(path.resolve("region"), this.dataFixer, true));
 +                // Kaiiju start
@@ -636,9 +694,9 @@ index e0bfeebeaac1aaea64bc07cdfdf7790e3e43ca7b..ac35e7eb8cb5f19391a18eb9d6b5ba26
 +                // Kaiiju end
              }
  
-             ImmutableMap<ResourceKey<LevelStem>, ChunkStorage> immutablemap1 = builder1.build(); // CraftBukkit
+             ImmutableMap<ResourceKey<Level>, ChunkStorage> immutablemap1 = builder1.build();
 @@ -235,7 +240,7 @@ public class WorldUpgrader {
-         File file = this.levelStorage.getDimensionPath((ResourceKey) null).toFile(); // CraftBukkit
+         File file = this.levelStorage.getDimensionPath(world).toFile();
          File file1 = new File(file, "region");
          File[] afile = file1.listFiles((file2, s) -> {
 -            return s.endsWith(".mca");
@@ -693,7 +751,7 @@ index 8ebecb588058da174b0e0e19e54fcddfeeca1422..1d880f27dd147da683fc30ed6f1bfa43
      }
  
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
-index dcfe090c269d4cbcc2eb1b6f85392848bb34656c..d42c320179ae055b8675d1ce6ce1788ecafb8e9d 100644
+index 0c5ac12b1f395bba8b7fc50baf8e825ba6488f6c..ea4a4b3e91533790eff95c028285fbc5b8fd2cb8 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
 @@ -27,7 +27,7 @@ import net.minecraft.nbt.NbtIo;
@@ -754,7 +812,7 @@ 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 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823f4b63a3a 100644
+index 81554c321a78258ff78da3801f00d0fb90b9e113..e91e8aef8b63ea9d94e0ecb3e4a62655a8c77ce1 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 {
@@ -836,7 +894,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
              }
              // Paper end
              return regionfile;
-@@ -126,28 +134,49 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -126,28 +134,45 @@ public class RegionFileStorage implements AutoCloseable {
              }
              // Paper end - cache regionfile does not exist state
              if (this.regionCache.size() >= io.papermc.paper.configuration.GlobalConfiguration.get().misc.regionFileCacheSize) { // Paper - configurable
@@ -874,10 +932,6 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
 +                // 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
@@ -893,7 +947,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
              }
              // Paper end
              return regionfile1;
-@@ -175,7 +204,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -175,7 +200,7 @@ public class RegionFileStorage implements AutoCloseable {
      }
  
  
@@ -902,7 +956,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
          synchronized (regionfile) {
              try (DataInputStream datainputstream = regionfile.getChunkDataInputStream(chunkCoordinate)) {
                  CompoundTag oversizedData = regionfile.getOversizedData(chunkCoordinate.x, chunkCoordinate.z);
-@@ -222,14 +251,14 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -222,14 +247,14 @@ 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
@@ -919,7 +973,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
          // 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
-@@ -239,7 +268,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -239,7 +264,7 @@ public class RegionFileStorage implements AutoCloseable {
  
          // Paper start
          if (regionfile.isOversized(pos.x, pos.z)) {
@@ -928,7 +982,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
              return readOversizedChunk(regionfile, pos);
          }
          // Paper end
-@@ -253,12 +282,12 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -253,12 +278,12 @@ public class RegionFileStorage implements AutoCloseable {
                      if (this.isChunkData) {
                          ChunkPos chunkPos = ChunkSerializer.getChunkCoordinate(nbttagcompound);
                          if (!chunkPos.equals(pos)) {
@@ -944,7 +998,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
                              return null;
                          }
                      }
-@@ -292,13 +321,13 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -292,13 +317,13 @@ public class RegionFileStorage implements AutoCloseable {
  
          return nbttagcompound;
          } finally { // Paper start
@@ -960,7 +1014,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
          if (regionfile == null) {
              return;
          }
-@@ -328,7 +357,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -328,7 +353,7 @@ public class RegionFileStorage implements AutoCloseable {
      }
  
      protected void write(ChunkPos pos, @Nullable CompoundTag nbt) throws IOException {
@@ -969,7 +1023,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
          if (nbt == null && regionfile == null) {
              return;
          }
-@@ -378,7 +407,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -378,7 +403,7 @@ public class RegionFileStorage implements AutoCloseable {
          }
          // Paper end
          } finally { // Paper start
@@ -978,7 +1032,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
          } // Paper end
      }
  
-@@ -387,7 +416,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -387,7 +412,7 @@ public class RegionFileStorage implements AutoCloseable {
          ObjectIterator objectiterator = this.regionCache.values().iterator();
  
          while (objectiterator.hasNext()) {
@@ -987,7 +1041,7 @@ index 81554c321a78258ff78da3801f00d0fb90b9e113..b35a6a7daf768af3bc453fe18deec823
  
              try {
                  regionfile.close();
-@@ -403,7 +432,7 @@ public class RegionFileStorage implements AutoCloseable {
+@@ -403,7 +428,7 @@ public class RegionFileStorage implements AutoCloseable {
          ObjectIterator objectiterator = this.regionCache.values().iterator();
  
          while (objectiterator.hasNext()) {
@@ -1012,7 +1066,7 @@ index 5561b8499a0503b850974b1dc309edfb80219549..9394d191c56aab78e63fd3f283efedd6
          this.factory = factory;
          this.fixerUpper = dataFixer;
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index 23b8dde3cd185b372d4adc97201a422cebbbe804..6012ea6d3fb6e731ff491ef134085013c2c6075c 100644
+index 2c19648e68c8d25bd295e2a37ce701bb3cf61e29..11ec1c94d432be7215728240f2cc1bfbdd27f836 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 @@ -561,7 +561,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {

patches/server/0005-Network-configuration.patch

@@ -5,12 +5,12 @@ Subject: [PATCH] Network configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index b86c90cc3601e666998cfa12f44515f605bb53eb..7c6d43d8a360530344ef296f4477750c8a298607 100644
+index b7f43cce80742aa0cd523e930772ff84946f3eef..fa829cef4033625470dfae29ddf777e6c5ab8c55 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -198,4 +198,7 @@ public class KaiijuConfig {
+@@ -203,4 +203,7 @@ public class KaiijuConfig {
-     private static void regionFormatSettings() {
+         else
-         regionFormatDebug = getBoolean("region-format.debug", regionFormatDebug);
+             linearFlushThreads = Math.max(linearFlushThreads, 1);
      }
 +
 +    private static void networkSettings() {

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

@@ -6,12 +6,12 @@ Subject: [PATCH] Send null entity packets
 This is from Purpur. Don't send null entity packets.
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index 7c6d43d8a360530344ef296f4477750c8a298607..ab08e11f13921163b8ff1ff51ff9e9b86d2b47c7 100644
+index fa829cef4033625470dfae29ddf777e6c5ab8c55..47e23a196ae5e44600a64184b69141c00235baca 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -198,7 +198,10 @@ public class KaiijuConfig {
+@@ -203,7 +203,10 @@ public class KaiijuConfig {
-     private static void regionFormatSettings() {
+         else
-         regionFormatDebug = getBoolean("region-format.debug", regionFormatDebug);
+             linearFlushThreads = Math.max(linearFlushThreads, 1);
      }
 +    
 +    public static boolean sendNullEntityPackets = true;
@@ -21,7 +21,7 @@ index 7c6d43d8a360530344ef296f4477750c8a298607..ab08e11f13921163b8ff1ff51ff9e9b8
      }
  }
 diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
-index 6670e657e08e130f7e0368f418379fd1ece00cdf..5558d87ef182f82be7877455dd027082c6a80632 100644
+index 81d0b2933040a451441f660f9e46199ae3b111e3..cdbc4be679d7e096c1005eaf84b74c4877479c43 100644
 --- a/src/main/java/net/minecraft/server/level/ServerEntity.java
 +++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
 @@ -201,6 +201,11 @@ public class ServerEntity {

patches/server/0007-Alternate-Keepalive.patch

@@ -7,10 +7,10 @@ Don't kick players because 1 keepalive is lost.
 This patch is from Purpur.
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index ab08e11f13921163b8ff1ff51ff9e9b86d2b47c7..b42a3466f145a92608c8746fd4beb529b4a60b01 100644
+index 47e23a196ae5e44600a64184b69141c00235baca..95b53b50606ea0ad47f407bebbb9e2bd445c0e66 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -200,8 +200,10 @@ public class KaiijuConfig {
+@@ -205,8 +205,10 @@ public class KaiijuConfig {
      }
      
      public static boolean sendNullEntityPackets = true;
@@ -22,10 +22,10 @@ index ab08e11f13921163b8ff1ff51ff9e9b86d2b47c7..b42a3466f145a92608c8746fd4beb529
      }
  }
 diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-index 82ffef34b596a98faa245ba401e67add9d9ac7d0..b2ed157a17cada4887e543a23ee65642eb54637e 100644
+index 678bba9d636a0eb34270a2d26b5b3d0d6d900115..564b2e668d50f05863080288d20bd54077588db9 100644
 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
 +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-@@ -263,6 +263,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -265,6 +265,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
      private long keepAliveTime = Util.getMillis();
      private boolean keepAlivePending;
      private long keepAliveChallenge;
@@ -33,7 +33,7 @@ index 82ffef34b596a98faa245ba401e67add9d9ac7d0..b2ed157a17cada4887e543a23ee65642
      // CraftBukkit start - multithreaded fields
      private final AtomicInteger chatSpamTickCount = new AtomicInteger();
      private final java.util.concurrent.atomic.AtomicInteger tabSpamLimiter = new java.util.concurrent.atomic.AtomicInteger(); // Paper - configurable tab spam limits
-@@ -355,6 +356,20 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -357,6 +358,20 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
          long currentTime = Util.getMillis();
          long elapsedTime = currentTime - this.keepAliveTime;
  
@@ -54,7 +54,7 @@ index 82ffef34b596a98faa245ba401e67add9d9ac7d0..b2ed157a17cada4887e543a23ee65642
          if (this.keepAlivePending) {
              if (!this.processedDisconnect && elapsedTime >= KEEPALIVE_LIMIT) { // check keepalive limit, don't fire if already disconnected
                  ServerGamePacketListenerImpl.LOGGER.warn("{} was kicked due to keepalive timeout!", this.player.getScoreboardName()); // more info
-@@ -3514,6 +3529,16 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -3610,6 +3625,16 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
  
      @Override
      public void handleKeepAlive(ServerboundKeepAlivePacket packet) {

patches/server/0008-Optimization-Configuration.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Optimization Configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index b42a3466f145a92608c8746fd4beb529b4a60b01..7b56cc1275319cf07a4a25280e0ff900bdca8afa 100644
+index 95b53b50606ea0ad47f407bebbb9e2bd445c0e66..8aab072a21b0775338b8235a84f5f675f385cf37 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -206,4 +206,7 @@ public class KaiijuConfig {
+@@ -211,4 +211,7 @@ public class KaiijuConfig {
          sendNullEntityPackets = getBoolean("network.send-null-entity-packets", sendNullEntityPackets);
          alternateKeepAlive = getBoolean("network.alternate-keepalive", alternateKeepAlive);
      }

patches/server/0009-Gameplay-Configuration.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Gameplay Configuration
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index 7b56cc1275319cf07a4a25280e0ff900bdca8afa..fdc4cdbf34ed10f6523dceac7c1931d3ca4eb522 100644
+index 8aab072a21b0775338b8235a84f5f675f385cf37..46ae5b84ee5b87b0ed0b93e920689e44288a50d2 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -209,4 +209,7 @@ public class KaiijuConfig {
+@@ -214,4 +214,7 @@ public class KaiijuConfig {
  
      private static void optimizationSettings() {
      }

patches/server/0011-Server-mod-name.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Server mod name
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index fdc4cdbf34ed10f6523dceac7c1931d3ca4eb522..e1f50adfa216320bc53b460d11666064cb58c969 100644
+index 46ae5b84ee5b87b0ed0b93e920689e44288a50d2..778de435ca3c13ccc2f2d86030e3529436a2d945 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -210,6 +210,9 @@ public class KaiijuConfig {
+@@ -215,6 +215,9 @@ public class KaiijuConfig {
      private static void optimizationSettings() {
      }
  
@@ -19,10 +19,10 @@ index fdc4cdbf34ed10f6523dceac7c1931d3ca4eb522..e1f50adfa216320bc53b460d11666064
      }
  }
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index 06233380f7580726753de34c1fb23d6347c9ac94..1b3f895b51b634ee9cf69cdbbfd7a1e600de16f0 100644
+index 7243443d4bf24ad0b32b8a76d9b8701cca8612a7..3a358d159532faaf29af0118ecbfc255d9610969 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -1812,7 +1812,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -1811,7 +1811,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
  
      @DontObfuscate
      public String getServerModName() {

patches/server/0012-Crash-on-broken-symlink.patch

@@ -42,7 +42,7 @@ index abf5e2a06af9853b58ac9107cd6e9787c4185c66..389c68c0becd2f69dc1004d0b383f1a8
          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 61c6bc2859235874aefac71e9e55162f0a89f29f..24bd63c596c9f61f1e89ec5b001b7cb7a29a09ff 100644
+index c4d28d887b4cc71dc713b1e3f46bc80f4484a95d..f50507ab85282d261985ce9b186581f5a7a50f79 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -269,7 +269,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
@@ -64,21 +64,21 @@ index 61c6bc2859235874aefac71e9e55162f0a89f29f..24bd63c596c9f61f1e89ec5b001b7cb7
          // 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 4774d3f357d62b0818b4713f8085d05be09eaa5c..1bbd8b475cdc57fb15ca05ffe122220a5539da10 100644
+index e6e985e8e2c7cccb2c3395ae3fbc30072e1d48f0..ad896c8a3060f5c8d85a8b5707317de646bf9cae 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -426,8 +426,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -453,8 +453,8 @@ 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
+-        public EntityRegionFileStorage(dev.kaiijumc.kaiiju.region.RegionFileFormat format, int linearCompression, Path directory, boolean dsync) { // Kaiiju
 -            super(format, linearCompression, directory, 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 {
-@@ -666,7 +666,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -693,7 +693,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
          // CraftBukkit end
          boolean flag2 = minecraftserver.forceSynchronousWrites();
          DataFixer datafixer = minecraftserver.getFixerUpper();
@@ -135,7 +135,7 @@ index 1d880f27dd147da683fc30ed6f1bfa43ecdb7d93..41598adf6d49a44bcaadfff379722146
      }
  
 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 b35a6a7daf768af3bc453fe18deec823f4b63a3a..8409293b3f329715d6dff3d455c6a484d5b133ee 100644
+index e91e8aef8b63ea9d94e0ecb3e4a62655a8c77ce1..bbc6a0c70cbafbfa411ab418e4fec11ad101ae91 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;
@@ -209,7 +209,7 @@ index b35a6a7daf768af3bc453fe18deec823f4b63a3a..8409293b3f329715d6dff3d455c6a484
 +                guardAgainstBrokenSymlinks(path1); // Kaiiju - Crash on broken symlink
                  this.createRegionFile(regionPos);
              }
-             // 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 9394d191c56aab78e63fd3f283efedd69384e323..dcfe4a285cc5865be3b0c1b8104b722895135dd0 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java

patches/server/0013-Toggle-void-trading.patch

@@ -22,10 +22,10 @@ index f3f824d0ab1a2a72825c40b67192386479a0b34c..95ed6cb7b94797187d1011cab344e187
      }
  }
 diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
-index 1bbd8b475cdc57fb15ca05ffe122220a5539da10..7f39e36037d55278d15399196459e51b885c5d1e 100644
+index ad896c8a3060f5c8d85a8b5707317de646bf9cae..0df4672abb5e87587da8712b6febf6312e241cda 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -2838,7 +2838,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -2865,7 +2865,7 @@ 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

patches/server/0014-Toggle-optimize-hoppers.patch

@@ -6,25 +6,26 @@ Subject: [PATCH] Toggle optimize hoppers
 Paper optimize hoppers patch break a lot of technical redstone farms because of piston updates. (Example: twiti888 wood farm)
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index 95ed6cb7b94797187d1011cab344e187b39d9193..72bcf8e35593bb54079b6cbd9238acdcd43c3e46 100644
+index 95ed6cb7b94797187d1011cab344e187b39d9193..6d7356cc07da58b1cef8d8963e790251d765de2c 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -153,8 +153,10 @@ public class KaiijuWorldConfig {
+@@ -147,9 +147,11 @@ public class KaiijuWorldConfig {
+     }
+ 
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
++    public boolean optimizeHoppers = true;
+ 
+     private void optimizationSettings() {
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
++        optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
      }
  
      public boolean fixVoidTrading = true;
-+    public boolean optimizeHoppers = true;
- 
-     private void gameplaySettings() {
-         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 4825a74ce4893dafdb70ae1badf3d2e1930d01a1..762b763f271c3208b4f8a7e346897207ec5beb6c 100644
+index 81d8de7c80bac16d874faf990cb08f1556a46adc..0735ee186b4e81231201ef6f8ddb02995b64259d 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
+@@ -441,49 +441,51 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
              if (HopperBlockEntity.isFullContainer(iinventory1, enumdirection)) {
                  return false;
              } else {
@@ -113,7 +114,7 @@ index 4825a74ce4893dafdb70ae1badf3d2e1930d01a1..762b763f271c3208b4f8a7e346897207
              }
          }
      }
-@@ -467,6 +469,12 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+@@ -525,6 +527,12 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
          if (iinventory != null) {
              Direction enumdirection = Direction.DOWN;
  
@@ -125,8 +126,8 @@ index 4825a74ce4893dafdb70ae1badf3d2e1930d01a1..762b763f271c3208b4f8a7e346897207
 +            // 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) -> {
+             // merge container isEmpty check and move logic into one loop
-@@ -499,48 +507,50 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen
+@@ -571,48 +579,50 @@ 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);
  

patches/server/0015-Toggle-tick-level-when-empty.patch

@@ -5,26 +5,27 @@ 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 72bcf8e35593bb54079b6cbd9238acdcd43c3e46..9802039d34eb1717b712c9041fd9f602fccae236 100644
+index 6d7356cc07da58b1cef8d8963e790251d765de2c..601b9867d839f4928ba993ee8f00df9c330a0fe3 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -154,9 +154,11 @@ public class KaiijuWorldConfig {
+@@ -148,10 +148,12 @@ public class KaiijuWorldConfig {
  
-     public boolean fixVoidTrading = true;
+     public boolean shulkerBoxDropContentsWhenDestroyed = true;
      public boolean optimizeHoppers = true;
 +    public boolean tickWhenEmpty = true;
  
-     private void gameplaySettings() {
+     private void optimizationSettings() {
-         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+         shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
-         optimizeHoppers = getBoolean("gameplay.optimize-hoppers", optimizeHoppers);
+         optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
-+        tickWhenEmpty = getBoolean("gameplay.tick-when-empty", tickWhenEmpty);
++        tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
      }
- }
+ 
+     public boolean fixVoidTrading = true;
 diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
-index 7f39e36037d55278d15399196459e51b885c5d1e..66509fa23bfcde70abd3917eb774cf48d5d6da93 100644
+index 0df4672abb5e87587da8712b6febf6312e241cda..1818c5ae88c331fb900470436f72049165c9e9f4 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -798,7 +798,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -825,7 +825,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
          timings.doSounds.stopTiming(); // Spigot
          regionizedWorldData.setHandlingTick(false); // Folia - regionised ticking
          gameprofilerfiller.pop();

patches/server/0016-Toggle-break-redstone-on-top-of-trap-doors-early.patch

@@ -6,19 +6,17 @@ 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 9802039d34eb1717b712c9041fd9f602fccae236..3355935bbf8059d8a539dcefb84e3c0785314ce2 100644
+index 601b9867d839f4928ba993ee8f00df9c330a0fe3..e7ee85b09aa4438868e068551280b13e84cdfdb8 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -155,10 +155,12 @@ public class KaiijuWorldConfig {
+@@ -157,8 +157,10 @@ public class KaiijuWorldConfig {
+     }
+ 
      public boolean fixVoidTrading = true;
-     public boolean optimizeHoppers = true;
-     public boolean tickWhenEmpty = true;
 +    public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
  
      private void gameplaySettings() {
          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);
      }
  }

patches/server/0017-Add-SIMD-utilities.patch

@@ -6,10 +6,10 @@ Subject: [PATCH] Add SIMD utilities
 Patch from Pufferfish
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index f213706442537201de0d74ca8a51cc93cb9d5220..1615346024037f2abe0fcfcfc5ea7713505bebca 100644
+index 99f31c4f5bf3064e483d5f387778c05742197e49..d73a4d547ad7768513773535d8cf15619c8079b0 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -60,6 +60,12 @@ dependencies {
+@@ -68,6 +68,12 @@ dependencies {
  }
  
  val craftbukkitPackageVersion = "1_20_R1" // Paper

patches/server/0018-Toggle-shared-random-for-players.patch

@@ -5,10 +5,10 @@ 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 e1f50adfa216320bc53b460d11666064cb58c969..c934341c17caf4696065ac6c39bdfef570c62f13 100644
+index 778de435ca3c13ccc2f2d86030e3529436a2d945..cac747a46cccf8b115917a72340e9b81e7a437c9 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -211,8 +211,10 @@ public class KaiijuConfig {
+@@ -216,8 +216,10 @@ public class KaiijuConfig {
      }
  
      public static String serverModName = "Kaiiju";
@@ -20,10 +20,10 @@ index e1f50adfa216320bc53b460d11666064cb58c969..c934341c17caf4696065ac6c39bdfef5
      }
  }
 diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
-index deaf4b65b6c9f3dbab6578c25fb78ca84507f70b..cdf669fc1065632033fab4154f0113474b984152 100644
+index fa35d2c1c8de225acd68e08f15976c92f7ab82aa..455f9aeac15123201d2677cdc8ba159d36229e91 100644
 --- a/src/main/java/net/minecraft/world/entity/Entity.java
 +++ b/src/main/java/net/minecraft/world/entity/Entity.java
-@@ -566,6 +566,11 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+@@ -567,6 +567,11 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
          this.bb = Entity.INITIAL_AABB;
          this.stuckSpeedMultiplier = Vec3.ZERO;
          this.nextStep = 1.0F;

patches/server/0019-Kick-player-instead-of-crashing.patch

@@ -5,7 +5,7 @@ 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 7b664f32868028758d0c6ee1eaa82efcd83661d2..8b325c764df7003f8e6984a85267cd78fc7672ed 100644
+index c5df121d6194a97b20dc390698991b9c72dba538..9990fccc741a139c57528f70157ae63dbe3fd8e8 100644
 --- a/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
 +++ b/src/main/java/io/papermc/paper/chunk/system/RegionizedPlayerChunkLoader.java
 @@ -485,7 +485,12 @@ public class RegionizedPlayerChunkLoader {

patches/server/0020-Toggle-fix-TripWire-state-inconsistency.patch

@@ -6,30 +6,28 @@ 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 3355935bbf8059d8a539dcefb84e3c0785314ce2..5c87df0fd68e4971201836b6301d526378271af5 100644
+index e7ee85b09aa4438868e068551280b13e84cdfdb8..8d7821d8b1a3615eaef1073d9dab690559b85f81 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -156,11 +156,13 @@ public class KaiijuWorldConfig {
+@@ -158,9 +158,11 @@ public class KaiijuWorldConfig {
-     public boolean optimizeHoppers = true;
+ 
-     public boolean tickWhenEmpty = true;
+     public boolean fixVoidTrading = true;
      public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
 +    public boolean fixTripWireStateInconsistency = true;
  
      private void gameplaySettings() {
          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);
 +        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
+index cb2ff8d94308c637a498d2737f86f6af4c9c1b83..84c407dfd19924d12f1c25addbb613e607445fd9 100644
 --- a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
 +++ b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
-@@ -74,7 +74,7 @@ public class TripWireBlock extends Block {
+@@ -78,7 +78,7 @@ public class TripWireBlock extends Block {
-     @Override
      public void onRemove(BlockState state, Level world, BlockPos pos, BlockState newState, boolean moved) {
+         if (io.papermc.paper.configuration.GlobalConfiguration.get().blockUpdates.disableTripwireUpdates) return; // Paper - prevent adjacent tripwires from updating
          if (!moved && !state.is(newState.getBlock())) {
 -            this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true), true); // Paper - fix state inconsistency
 +            this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true), world.kaiijuConfig.fixTripWireStateInconsistency); // Paper - fix state inconsistency // Kaiiju - Toggle this

patches/server/0021-Entity-ticking-throttling-removal-to-prevent-lag.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Entity ticking throttling & removal to prevent lag.
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index 1615346024037f2abe0fcfcfc5ea7713505bebca..d24f5fdc6a8c34774933a5cd8bfed8571299bd35 100644
+index d73a4d547ad7768513773535d8cf15619c8079b0..f29c4621b3ab04aec026c9062c979a659d620738 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
-@@ -17,6 +17,7 @@ dependencies {
+@@ -23,6 +23,7 @@ dependencies {
      implementation("com.github.luben:zstd-jni:1.5.4-1")
      implementation("org.lz4:lz4-java:1.8.0")
      // Kaiiju end
@@ -252,17 +252,19 @@ index 0000000000000000000000000000000000000000..eb690efacf083e4ff3e321578b12c534
 +    }
 +}
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index 5c87df0fd68e4971201836b6301d526378271af5..ecae04b0cc317b154b29ca80a7246dc19e5d67ba 100644
+index 8d7821d8b1a3615eaef1073d9dab690559b85f81..816db23fa64aab69e3034484c00645ebd0479978 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -147,9 +147,11 @@ public class KaiijuWorldConfig {
+@@ -149,11 +149,13 @@ public class KaiijuWorldConfig {
-     }
- 
      public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean optimizeHoppers = true;
+     public boolean tickWhenEmpty = true;
 +    public boolean enableEntityThrottling = false;
  
      private void optimizationSettings() {
          shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
+         tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
 +        enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
      }
  
@@ -317,10 +319,10 @@ index 991e4c19763a34a6fead88363e007c2d11aad836..24a2d3f496727790f63cb66a2534d442
          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 66509fa23bfcde70abd3917eb774cf48d5d6da93..8fd9e3cee5a671ef8425311371cde57449ef1d8e 100644
+index 1818c5ae88c331fb900470436f72049165c9e9f4..7115a481bc8805333aa36af334132f98da9d8742 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
-@@ -822,6 +822,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -849,6 +849,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
                  } // Folia end - region threading
              }
  
@@ -328,21 +330,21 @@ index 66509fa23bfcde70abd3917eb774cf48d5d6da93..8fd9e3cee5a671ef8425311371cde574
              org.spigotmc.ActivationRange.activateEntities(this); // Spigot
              timings.entityTick.startTiming(); // Spigot
              regionizedWorldData.forEachTickingEntity((entity) -> { // Folia - regionised ticking
-@@ -844,6 +845,13 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -871,6 +872,13 @@ 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.remove && !entity.hasCustomName()) entity.remove(Entity.RemovalReason.DISCARDED);
 +                                if (throttle.skip) return;
 +                            }
 +                            // Kaiiju end
                              gameprofilerfiller.push("tick");
                              this.guardEntityTick(this::tickNonPassenger, entity);
                              gameprofilerfiller.pop();
-@@ -851,6 +859,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+@@ -878,6 +886,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
                      }
                  }
              });
@@ -351,7 +353,7 @@ index 66509fa23bfcde70abd3917eb774cf48d5d6da93..8fd9e3cee5a671ef8425311371cde574
              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 d8ca697663ace353e88bfabc8997b58230d3d811..c3bb81238afeafa3d59147f21c60022052142977 100644
+index a090c16d53fcb220687a18aa37ca82663f4660c7..adad8d0cfec6c1b2be2c11ce847f64a92d39e1ec 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 {

patches/server/0022-Toggle-safe-teleportation.patch

@@ -5,29 +5,27 @@ 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 ecae04b0cc317b154b29ca80a7246dc19e5d67ba..68074cc41c1e4cd06f2562d44947b63722d5af50 100644
+index 816db23fa64aab69e3034484c00645ebd0479978..7c6c74f95c2534624a928ccf6b0a4b9d2a5486ad 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -159,6 +159,7 @@ public class KaiijuWorldConfig {
+@@ -161,10 +161,12 @@ public class KaiijuWorldConfig {
-     public boolean tickWhenEmpty = true;
+     public boolean fixVoidTrading = true;
      public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
      public boolean fixTripWireStateInconsistency = true;
 +    public boolean safeTeleporting = true;
  
      private void gameplaySettings() {
          fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
-@@ -166,5 +167,6 @@ 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);
 +        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 cdf669fc1065632033fab4154f0113474b984152..6941b28b7b5a7ab0e9c950cfa3a5ed224438a65c 100644
+index 455f9aeac15123201d2677cdc8ba159d36229e91..4f8abe7cc8a687e7b55108a9b78b12a1f3deecd3 100644
 --- a/src/main/java/net/minecraft/world/entity/Entity.java
 +++ b/src/main/java/net/minecraft/world/entity/Entity.java
-@@ -3953,6 +3953,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+@@ -3944,6 +3944,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
  
      protected boolean tryEndPortal() {
          io.papermc.paper.util.TickThread.ensureTickThread(this, "Cannot portal entity async");

patches/server/0023-Toggle-sand-duplication.patch

@@ -5,10 +5,10 @@ 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 68074cc41c1e4cd06f2562d44947b63722d5af50..be32a516c1ee0f95790b8a96c465045ca4355c76 100644
+index 7c6c74f95c2534624a928ccf6b0a4b9d2a5486ad..9f0095f2196133a8bcffd5306aa9ac0b99b2f8d7 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -160,6 +160,7 @@ public class KaiijuWorldConfig {
+@@ -162,11 +162,13 @@ public class KaiijuWorldConfig {
      public boolean breakRedstoneOnTopOfTrapDoorsEarly = true;
      public boolean fixTripWireStateInconsistency = true;
      public boolean safeTeleporting = true;
@@ -16,7 +16,6 @@ index 68074cc41c1e4cd06f2562d44947b63722d5af50..be32a516c1ee0f95790b8a96c465045c
  
      private void gameplaySettings() {
          fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
-@@ -168,5 +169,6 @@ public class KaiijuWorldConfig {
          breakRedstoneOnTopOfTrapDoorsEarly = getBoolean("gameplay.break-redstone-on-top-of-trap-doors-early", breakRedstoneOnTopOfTrapDoorsEarly);
          fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
          safeTeleporting = getBoolean("gameplay.safe-teleportation", safeTeleporting);
@@ -24,10 +23,10 @@ index 68074cc41c1e4cd06f2562d44947b63722d5af50..be32a516c1ee0f95790b8a96c465045c
      }
  }
 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 6e35afb9e5314de69e78d819913418ab144bec52..6cff3410c2851aeb808994a4bf830a0db32a9a37 100644
+index 34b3541603b8cca16c7d62f3981d7ce3e8be0dbe..87d08f4d5bdec0ef96c0e4a91a2f595d2b0f0026 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 {
+@@ -133,7 +133,7 @@ public class FallingBlockEntity extends Entity {
      @Override
      public void tick() {
          // Paper start - fix sand duping
@@ -36,7 +35,7 @@ index 6e35afb9e5314de69e78d819913418ab144bec52..6cff3410c2851aeb808994a4bf830a0d
              return;
          }
          // Paper end - fix sand duping
-@@ -148,7 +148,7 @@ public class FallingBlockEntity extends Entity {
+@@ -150,7 +150,7 @@ public class FallingBlockEntity extends Entity {
              this.move(MoverType.SELF, this.getDeltaMovement());
  
              // Paper start - fix sand duping

patches/server/0024-Vanilla-end-portal-teleportation.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Fri, 19 May 2023 03:38:03 +0300
+Subject: [PATCH] Vanilla end portal teleportation
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 4f8abe7cc8a687e7b55108a9b78b12a1f3deecd3..7c57675adc33d7c5525cdf8ebfd696a0e756c9a7 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -4030,12 +4030,17 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                         targetPos, 16, // load 16 blocks to be safe from block physics
+                         ca.spottedleaf.concurrentutil.executor.standard.PrioritisedExecutor.Priority.HIGH,
+                         (chunks) -> {
+-                            ServerLevel.makeObsidianPlatform(destination, null, targetPos);
++                            //ServerLevel.makeObsidianPlatform(destination, null, targetPos); // Kaiiju - Vanilla end teleportation - moved down
+ 
++                            // Kaiiju start - Vanilla end teleportation
++                            Vec3 finalPos;
++                            if (this instanceof Player) finalPos = Vec3.atBottomCenterOf(targetPos.below());
++                            else finalPos = Vec3.atBottomCenterOf(targetPos);
++                            // Kaiiju end
+                             // the portal obsidian is placed at targetPos.y - 2, so if we want to place the entity
+                             // on the obsidian, we need to spawn at targetPos.y - 1
+                             portalInfoCompletable.complete(
+-                                new PortalInfo(Vec3.atBottomCenterOf(targetPos.below()), Vec3.ZERO, 90.0f, 0.0f, destination, null)
++                                new PortalInfo(finalPos, this.getDeltaMovement(), 90.0f, 0.0f, destination, null) // Kaiiju - Vanilla end teleportation
+                             );
+                         }
+                     );
+@@ -4222,6 +4227,10 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         if (!this.canPortalAsync(takePassengers)) {
+             return false;
+         }
++        // Kaiiju start - sync end platform spawning & entity teleportation
++        final java.util.function.Consumer<Entity> tpComplete = type == PortalType.END && destination.getTypeKey() == LevelStem.END ?
++              e -> ServerLevel.makeObsidianPlatform(destination, null, ServerLevel.END_SPAWN_POINT) : teleportComplete;
++        // Kaiiju end
+ 
+         Vec3 initialPosition = this.position();
+         ChunkPos initialPositionChunk = new ChunkPos(
+@@ -4280,7 +4289,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+             // place
+             passengerTree.root.placeInAsync(
+                 originWorld, destination, Entity.TELEPORT_FLAG_LOAD_CHUNK | (takePassengers ? Entity.TELEPORT_FLAG_TELEPORT_PASSENGERS : 0L),
+-                passengerTree, teleportComplete
++                passengerTree, tpComplete // Kaiiju - vanilla end teleportation
+             );
+         });
+ 

patches/server/0026-Use-Math.floor-instead-of-fastfloor.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Use Math.floor instead of fastfloor
 
 
 diff --git a/src/main/java/io/papermc/paper/util/MCUtil.java b/src/main/java/io/papermc/paper/util/MCUtil.java
-index 38441121cf7cdc1d64ef9fc17ae76dc16fbf96f2..3f76e1bc0c08775353d22b7d928536aba9c8ad1d 100644
+index cadb91c7f5ef80aac8513f246fdf481947fa0a17..c1a2d67cb62af94c8bb4dff97f4fcb47542562dd 100644
 --- a/src/main/java/io/papermc/paper/util/MCUtil.java
 +++ b/src/main/java/io/papermc/paper/util/MCUtil.java
-@@ -164,13 +164,19 @@ public final class MCUtil {
+@@ -168,13 +168,19 @@ public final class MCUtil {
      }
  
      public static int fastFloor(double x) {

patches/server/0026-Vanilla-end-portal-teleportation.patch

@@ -1,27 +0,0 @@
-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 6941b28b7b5a7ab0e9c950cfa3a5ed224438a65c..7dcba5ed8ad3cda9951c6193273261754e8ef63b 100644
---- a/src/main/java/net/minecraft/world/entity/Entity.java
-+++ b/src/main/java/net/minecraft/world/entity/Entity.java
-@@ -4041,10 +4041,15 @@ 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/server/0027-Allow-user-to-enable-moving-into-unloaded-chunks.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Allow user to enable moving into unloaded chunks
 
 
 diff --git a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
-index a00201eca053ef69b8d903fdb9538444baf85465..bb9f088e3b7b90ab38d794433fc5d30d39e12c76 100644
+index 571c18117d7f85eddff31d535c09b46e0e9e4341..afaaa7fc06b4c0c1a355fdd3280003cfed40429e 100644
 --- a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
 +++ b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
-@@ -415,14 +415,14 @@ public class WorldConfiguration extends ConfigurationPart {
+@@ -463,14 +463,14 @@ public class WorldConfiguration extends ConfigurationPart {
      public class Chunks extends Post {
          @Override
          public void postProcess() {

patches/server/0030-Option-to-disable-vanish-api.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Option to disable vanish api
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index c934341c17caf4696065ac6c39bdfef570c62f13..f49510c999ce5241f26dc9ba90a6148bf31467c7 100644
+index cac747a46cccf8b115917a72340e9b81e7a437c9..a3c15f1009dad095b9411242e2d0347a6141984b 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -207,7 +207,10 @@ public class KaiijuConfig {
+@@ -212,7 +212,10 @@ public class KaiijuConfig {
          alternateKeepAlive = getBoolean("network.alternate-keepalive", alternateKeepAlive);
      }
  
@@ -20,17 +20,17 @@ index c934341c17caf4696065ac6c39bdfef570c62f13..f49510c999ce5241f26dc9ba90a6148b
  
      public static String serverModName = "Kaiiju";
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index 24bd63c596c9f61f1e89ec5b001b7cb7a29a09ff..3fc2b4a91d2b9727972d6b43b6d2c04b1df3c698 100644
+index 2b9ec3e7ddb5f5d18553bf82717405552f441f45..96ee7b65f292ac86ffa8c5d371e283eba9bd1133 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
-@@ -1350,7 +1350,11 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+@@ -1362,7 +1362,11 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
-                 boolean flag = d1 <= d2 && this.entity.broadcastToPlayer(player);
+                 // Folia end - region threading
  
                  // CraftBukkit start - respect vanish API
--                if (!io.papermc.paper.util.TickThread.isTickThreadFor(player) || !player.getBukkitEntity().canSee(this.entity.getBukkitEntity())) { // Folia - region threading
+-                if (flag && !io.papermc.paper.util.TickThread.isTickThreadFor(player) || !player.getBukkitEntity().canSee(this.entity.getBukkitEntity())) { // Folia - region threading
 +                // Kaiiju start - don't respect vanish API >:D
 +                boolean canSee = true;
-+                if (!dev.kaiijumc.kaiiju.KaiijuConfig.disableVanishApi) canSee = player.getBukkitEntity().canSee(this.entity.getBukkitEntity());
++                if (flag && !dev.kaiijumc.kaiiju.KaiijuConfig.disableVanishApi) canSee = player.getBukkitEntity().canSee(this.entity.getBukkitEntity());
 +                if (!io.papermc.paper.util.TickThread.isTickThreadFor(player) || !canSee) { // Folia - region threading
 +                // Kaiiju end
                      flag = false;

patches/server/0031-Option-to-disable-player-stats.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Option to disable player stats
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index f49510c999ce5241f26dc9ba90a6148bf31467c7..b23f2df433d7ebc871f4009081c28ed9054d91c7 100644
+index a3c15f1009dad095b9411242e2d0347a6141984b..8c872b2ad341f0105275209201fda03706535161 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -208,9 +208,11 @@ public class KaiijuConfig {
+@@ -213,9 +213,11 @@ public class KaiijuConfig {
      }
  
      public static boolean disableVanishApi = false;
@@ -21,10 +21,10 @@ index f49510c999ce5241f26dc9ba90a6148bf31467c7..b23f2df433d7ebc871f4009081c28ed9
  
      public static String serverModName = "Kaiiju";
 diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
-index d58e8211fc765c61548ac2a180de87dd2934ba37..19642e7bf00dc9fdc157e70b4d6849a9898a2557 100644
+index 7cb6a0b99c8e51f7f767b704071473c5d8bded7d..e0e7e0a2f60aff5bc8c625988860036722707da8 100644
 --- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
 +++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
-@@ -2081,6 +2081,7 @@ public class ServerPlayer extends Player {
+@@ -2143,6 +2143,7 @@ public class ServerPlayer extends Player {
  
      @Override
      public void awardStat(Stat<?> stat, int amount) {

patches/server/0032-Option-to-disable-achievements.patch

@@ -5,27 +5,29 @@ Subject: [PATCH] Option to disable achievements
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index be32a516c1ee0f95790b8a96c465045ca4355c76..27a0f1d81161adb86339f4b829c3628c1022271b 100644
+index 9f0095f2196133a8bcffd5306aa9ac0b99b2f8d7..31d66bb2fcf4bb7262df2d8006e307fee92660ea 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -148,10 +148,12 @@ public class KaiijuWorldConfig {
+@@ -150,12 +150,14 @@ public class KaiijuWorldConfig {
- 
+     public boolean optimizeHoppers = true;
-     public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean tickWhenEmpty = true;
      public boolean enableEntityThrottling = false;
 +    public boolean disableAchievements = false;
  
      private void optimizationSettings() {
          shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+         optimizeHoppers = getBoolean("optimization.optimize-hoppers", optimizeHoppers);
+         tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
          enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
 +        disableAchievements = getBoolean("optimization.disable-achievements", disableAchievements);
      }
  
      public boolean fixVoidTrading = true;
 diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
-index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be21addd0c 100644
+index e0e7e0a2f60aff5bc8c625988860036722707da8..6f1878a8a0c904322286079f500592a268a269e9 100644
 --- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
 +++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
-@@ -734,7 +734,7 @@ public class ServerPlayer extends Player {
+@@ -792,7 +792,7 @@ public class ServerPlayer extends Player {
  
      @Override
      protected void onInsideBlock(BlockState state) {
@@ -34,7 +36,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
      }
  
      @Override
-@@ -781,9 +781,9 @@ public class ServerPlayer extends Player {
+@@ -839,9 +839,9 @@ public class ServerPlayer extends Player {
              }
          }
  
@@ -46,7 +48,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
          }
  
          this.trackStartFallingPosition();
-@@ -858,7 +858,7 @@ public class ServerPlayer extends Player {
+@@ -916,7 +916,7 @@ public class ServerPlayer extends Player {
              }
  
              if (this.tickCount % 20 == 0) {
@@ -55,7 +57,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
              }
  
              // CraftBukkit start - initialize oldLevel, fire PlayerLevelChangeEvent, and tick client-sided world border
-@@ -887,7 +887,7 @@ public class ServerPlayer extends Player {
+@@ -945,7 +945,7 @@ public class ServerPlayer extends Player {
      @Override
      public void resetFallDistance() {
          if (this.getHealth() > 0.0F && this.startingToFallPosition != null) {
@@ -64,7 +66,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
          }
  
          this.startingToFallPosition = null;
-@@ -906,7 +906,7 @@ public class ServerPlayer extends Player {
+@@ -964,7 +964,7 @@ public class ServerPlayer extends Player {
              if (this.enteredLavaOnVehiclePosition == null) {
                  this.enteredLavaOnVehiclePosition = this.position();
              } else {
@@ -73,7 +75,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
              }
          }
  
-@@ -1110,7 +1110,7 @@ public class ServerPlayer extends Player {
+@@ -1168,7 +1168,7 @@ public class ServerPlayer extends Player {
  
              this.handleTeamKill(s, s1, ObjectiveCriteria.TEAM_KILL);
              this.handleTeamKill(s1, s, ObjectiveCriteria.KILLED_BY_TEAM);
@@ -82,7 +84,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
          }
      }
  
-@@ -1228,7 +1228,7 @@ public class ServerPlayer extends Player {
+@@ -1286,7 +1286,7 @@ public class ServerPlayer extends Player {
          this.wonGame = false;
  
          this.respawn((player) -> {
@@ -91,7 +93,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
          }, true);
      }
  
-@@ -1730,14 +1730,14 @@ public class ServerPlayer extends Player {
+@@ -1787,14 +1787,14 @@ public class ServerPlayer extends Player {
              maindimensionkey1 = resourcekey1;
          }
          // Paper end
@@ -109,7 +111,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
          }
  
          if (maindimensionkey1 != Level.NETHER) { // CraftBukkit
-@@ -1815,7 +1815,7 @@ public class ServerPlayer extends Player {
+@@ -1872,7 +1872,7 @@ public class ServerPlayer extends Player {
                  {
                      Either<Player.BedSleepingProblem, Unit> either = super.startSleepInBed(blockposition, force).ifRight((unit) -> {
                          this.awardStat(Stats.SLEEP_IN_BED);
@@ -118,7 +120,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
                      });
  
                      if (!this.serverLevel().canSleepThroughNights()) {
-@@ -2101,7 +2101,7 @@ public class ServerPlayer extends Player {
+@@ -2163,7 +2163,7 @@ public class ServerPlayer extends Player {
  
      @Override
      public void triggerRecipeCrafted(Recipe<?> recipe, List<ItemStack> ingredients) {
@@ -127,7 +129,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
      }
  
      @Override
-@@ -2230,14 +2230,14 @@ public class ServerPlayer extends Player {
+@@ -2292,14 +2292,14 @@ public class ServerPlayer extends Player {
              this.levitationStartPos = this.position();
          }
  
@@ -144,7 +146,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
      }
  
      @Override
-@@ -2248,7 +2248,7 @@ public class ServerPlayer extends Player {
+@@ -2310,7 +2310,7 @@ public class ServerPlayer extends Player {
              this.levitationStartPos = null;
          }
  
@@ -153,7 +155,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
      }
  
      @Override
-@@ -2808,7 +2808,7 @@ public class ServerPlayer extends Player {
+@@ -2870,7 +2870,7 @@ public class ServerPlayer extends Player {
  
      @Override
      protected void updateUsingItem(ItemStack stack) {
@@ -162,7 +164,7 @@ index 19642e7bf00dc9fdc157e70b4d6849a9898a2557..5e81fd3b1f88f33314f7b24b3e9ba2be
          super.updateUsingItem(stack);
      }
  
-@@ -2837,7 +2837,7 @@ public class ServerPlayer extends Player {
+@@ -2899,7 +2899,7 @@ public class ServerPlayer extends Player {
          Entity entity = item.getOwner();
  
          if (entity != null) {

patches/server/0033-Option-to-disable-arm-swing-event.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Option to disable arm swing event
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index b23f2df433d7ebc871f4009081c28ed9054d91c7..ec71f3f52cb8f7931aabd94619d2e7a24491d7ad 100644
+index 8c872b2ad341f0105275209201fda03706535161..9b118a6e22264c88c0460016822b1920631fff85 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -209,10 +209,12 @@ public class KaiijuConfig {
+@@ -214,10 +214,12 @@ public class KaiijuConfig {
  
      public static boolean disableVanishApi = false;
      public static boolean disablePlayerStats = false;
@@ -22,10 +22,10 @@ index b23f2df433d7ebc871f4009081c28ed9054d91c7..ec71f3f52cb8f7931aabd94619d2e7a2
  
      public static String serverModName = "Kaiiju";
 diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-index b2ed157a17cada4887e543a23ee65642eb54637e..a238a3f62a92748d1dfb11fcf8938d33409b7a0c 100644
+index 564b2e668d50f05863080288d20bd54077588db9..78ac2b47335961b15a8dd8851d17b79c249bc275 100644
 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
 +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-@@ -2647,6 +2647,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -2705,6 +2705,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
          PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
          if (this.player.isImmobile()) return; // CraftBukkit
          this.player.resetLastActionTime();
@@ -33,7 +33,7 @@ index b2ed157a17cada4887e543a23ee65642eb54637e..a238a3f62a92748d1dfb11fcf8938d33
          // CraftBukkit start - Raytrace to look for 'rogue armswings'
          float f1 = this.player.getXRot();
          float f2 = this.player.getYRot();
-@@ -2669,6 +2670,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+@@ -2737,6 +2738,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
  
          if (event.isCancelled()) return;
          // CraftBukkit end

patches/server/0034-Option-to-disable-creatures-spawn-events.patch

@@ -5,17 +5,19 @@ Subject: [PATCH] Option to disable creatures spawn events
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index 27a0f1d81161adb86339f4b829c3628c1022271b..58b0725fea8d2216242a949b9ed2b3d9e93ef1f3 100644
+index 31d66bb2fcf4bb7262df2d8006e307fee92660ea..c9830912019079369268bfbf2c95de18ad598f52 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -149,11 +149,13 @@ public class KaiijuWorldConfig {
+@@ -151,6 +151,7 @@ public class KaiijuWorldConfig {
-     public boolean shulkerBoxDropContentsWhenDestroyed = true;
+     public boolean tickWhenEmpty = true;
      public boolean enableEntityThrottling = false;
      public boolean disableAchievements = false;
 +    public boolean disableCreaturesSpawnEvents = false;
  
      private void optimizationSettings() {
          shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -158,6 +159,7 @@ public class KaiijuWorldConfig {
+         tickWhenEmpty = getBoolean("optimization.tick-when-empty", tickWhenEmpty);
          enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
          disableAchievements = getBoolean("optimization.disable-achievements", disableAchievements);
 +        disableCreaturesSpawnEvents = getBoolean("optimization.disable-creatures-spawn-events", disableCreaturesSpawnEvents);

patches/server/0035-Option-to-disable-dolphin-swim-to-treasure.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Option to disable dolphin swim to treasure
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-index 58b0725fea8d2216242a949b9ed2b3d9e93ef1f3..87887a6d266767fd46f4d65d89dfb9d853089db4 100644
+index c9830912019079369268bfbf2c95de18ad598f52..e2fb7d7a7b3126d386b46442c115085d1974ac4e 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
-@@ -150,12 +150,14 @@ public class KaiijuWorldConfig {
+@@ -152,6 +152,7 @@ public class KaiijuWorldConfig {
      public boolean enableEntityThrottling = false;
      public boolean disableAchievements = false;
      public boolean disableCreaturesSpawnEvents = false;
@@ -16,6 +16,7 @@ index 58b0725fea8d2216242a949b9ed2b3d9e93ef1f3..87887a6d266767fd46f4d65d89dfb9d8
  
      private void optimizationSettings() {
          shulkerBoxDropContentsWhenDestroyed = getBoolean("optimization.shulker-box-drop-contents-when-destroyed", shulkerBoxDropContentsWhenDestroyed);
+@@ -160,6 +161,7 @@ public class KaiijuWorldConfig {
          enableEntityThrottling = getBoolean("optimization.enable-entity-throttling", enableEntityThrottling);
          disableAchievements = getBoolean("optimization.disable-achievements", disableAchievements);
          disableCreaturesSpawnEvents = getBoolean("optimization.disable-creatures-spawn-events", disableCreaturesSpawnEvents);
@@ -24,10 +25,10 @@ index 58b0725fea8d2216242a949b9ed2b3d9e93ef1f3..87887a6d266767fd46f4d65d89dfb9d8
  
      public boolean fixVoidTrading = true;
 diff --git a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
-index 501e6cb4aa83f81c1f657e41f4e7f11d19d46831..8240b8e27d5f5e941049f269718670db0510f497 100644
+index 8448c5d778998390cf2b683f36e4e18ca7ffdc34..8438ae5194bba7cad22af5e350c5a288529cbcdb 100644
 --- a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
 +++ b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
-@@ -160,7 +160,7 @@ public class Dolphin extends WaterAnimal {
+@@ -164,7 +164,7 @@ public class Dolphin extends WaterAnimal {
      protected void registerGoals() {
          this.goalSelector.addGoal(0, new BreathAirGoal(this));
          this.goalSelector.addGoal(0, new TryFindWaterGoal(this));

patches/server/0036-Unsupported-configuration.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kugge <sofiane.djerbi38@gmail.com>
+Date: Mon, 28 Aug 2023 16:30:36 +0200
+Subject: [PATCH] Unsupported configuration
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 9b118a6e22264c88c0460016822b1920631fff85..8232ff317f44c698cac94656e4a910d75b73f402 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -229,4 +229,7 @@ public class KaiijuConfig {
+         serverModName = getString("gameplay.server-mod-name", serverModName);
+         sharedRandomForPlayers = getBoolean("gameplay.shared-random-for-players", sharedRandomForPlayers);
+     }
++
++    private static void unsupportedSettings() {
++    }
+ }

patches/server/0037-Option-to-disable-ensure-tick-thread-checks.patch

@@ -5,32 +5,28 @@ Subject: [PATCH] Option to disable ensure tick thread checks
 
 
 diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-index ec71f3f52cb8f7931aabd94619d2e7a24491d7ad..900d319f4ddb17af2275c1a20824648b41d39aac 100644
+index 8232ff317f44c698cac94656e4a910d75b73f402..12738605442b9cdd086b2b29ff372d12552993b8 100644
 --- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
 +++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
-@@ -210,11 +210,13 @@ public class KaiijuConfig {
+@@ -230,6 +230,9 @@ public class KaiijuConfig {
-     public static boolean disableVanishApi = false;
+         sharedRandomForPlayers = getBoolean("gameplay.shared-random-for-players", sharedRandomForPlayers);
-     public static boolean disablePlayerStats = false;
-     public static boolean disableArmSwingEvent = false;
-+    public static boolean disableEnsureTickThreadCheck = false;
- 
-     private static void optimizationSettings() {
-         disableVanishApi = getBoolean("optimization.disable-vanish-api", disableVanishApi);
-         disablePlayerStats = getBoolean("optimization.disable-player-stats", disablePlayerStats);
-         disableArmSwingEvent = getBoolean("optimization.disable-arm-swing-event", disableArmSwingEvent);
-+        disableEnsureTickThreadCheck = getBoolean("optimization.disable-ensure-tick-thread-check", disableEnsureTickThreadCheck);
      }
  
-     public static String serverModName = "Kaiiju";
++    public static boolean disableEnsureTickThreadChecks = false;
++
+     private static void unsupportedSettings() {
++        disableEnsureTickThreadChecks = getBoolean("unsupported.disable-ensure-tick-thread-checks", disableEnsureTickThreadChecks);
+     }
+ }
 diff --git a/src/main/java/io/papermc/paper/util/TickThread.java b/src/main/java/io/papermc/paper/util/TickThread.java
-index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2dabed9fd 100644
+index cb453dd110fc37fae75257a4576512126207763e..492e6a512343001d3d772d2d8b427d2d84e89da5 100644
 --- a/src/main/java/io/papermc/paper/util/TickThread.java
 +++ b/src/main/java/io/papermc/paper/util/TickThread.java
 @@ -46,6 +46,7 @@ public class TickThread extends Thread {
       */
      @Deprecated
      public static void ensureTickThread(final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThread()) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);
@@ -38,7 +34,7 @@ index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2
      }
  
      public static void ensureTickThread(final ServerLevel world, final BlockPos pos, final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThreadFor(world, pos)) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);
@@ -46,7 +42,7 @@ index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2
      }
  
      public static void ensureTickThread(final ServerLevel world, final ChunkPos pos, final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThreadFor(world, pos)) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);
@@ -54,7 +50,7 @@ index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2
      }
  
      public static void ensureTickThread(final ServerLevel world, final int chunkX, final int chunkZ, final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThreadFor(world, chunkX, chunkZ)) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);
@@ -62,7 +58,7 @@ index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2
      }
  
      public static void ensureTickThread(final Entity entity, final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThreadFor(entity)) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);
@@ -70,7 +66,7 @@ index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2
      }
  
      public static void ensureTickThread(final ServerLevel world, final AABB aabb, final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThreadFor(world, aabb)) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);
@@ -78,7 +74,7 @@ index cb453dd110fc37fae75257a4576512126207763e..6d0c5aa38b6980c80c2021933c4758e2
      }
  
      public static void ensureTickThread(final ServerLevel world, final double blockX, final double blockZ, final String reason) {
-+        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadCheck) return; // Kaiiju
++        if (dev.kaiijumc.kaiiju.KaiijuConfig.disableEnsureTickThreadChecks) return; // Kaiiju
          if (!isTickThreadFor(world, blockX, blockZ)) {
              MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
              throw new IllegalStateException(reason);

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

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

patches/server/0039-Skip-event-if-no-listeners.patch

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

patches/server/0040-Teleport-async-if-we-cannot-move-entity-off-main.patch

@@ -0,0 +1,75 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sat, 8 Jul 2023 03:31:04 +0300
+Subject: [PATCH] Teleport async if we cannot move entity off-main
+
+Entities with huge velocity (100k+ velocity anarchy travel exploit) might disappear / crash the server because they travel a region each tick.
+TODO: Entities with huge velocity still throw stacktraces because they are ticked in "null" regions.
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+index e2fb7d7a7b3126d386b46442c115085d1974ac4e..44f5540a6a5733cf6f10f6b04fc9611ac4e53685 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuWorldConfig.java
+@@ -169,6 +169,7 @@ public class KaiijuWorldConfig {
+     public boolean fixTripWireStateInconsistency = true;
+     public boolean safeTeleporting = true;
+     public boolean sandDuplication = false;
++    public boolean teleportAsyncOnHighVelocity = false;
+ 
+     private void gameplaySettings() {
+         fixVoidTrading = getBoolean("gameplay.fix-void-trading", fixVoidTrading);
+@@ -176,5 +177,6 @@ public class KaiijuWorldConfig {
+         fixTripWireStateInconsistency = getBoolean("gameplay.fix-tripwire-state-inconsistency", fixTripWireStateInconsistency);
+         safeTeleporting = getBoolean("gameplay.safe-teleportation", safeTeleporting);
+         sandDuplication = getBoolean("gameplay.sand-duplication", sandDuplication);
++        teleportAsyncOnHighVelocity = getBoolean("gameplay.teleport-async-on-high-velocity", teleportAsyncOnHighVelocity);
+     }
+ }
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 7c57675adc33d7c5525cdf8ebfd696a0e756c9a7..69abd1a59a5d2855c6dd264c0e8e483eccba0132 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -1127,7 +1127,20 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                     }
+                 }
+ 
++                try { // Kaiiju - Teleport async if we cannot move entity off-main
+                 this.setPos(this.getX() + vec3d1.x, this.getY() + vec3d1.y, this.getZ() + vec3d1.z);
++                // Kaiiju start - Teleport async if we cannot move entity off-main
++                } catch (IllegalStateException e) {
++                    if (this.level().kaiijuConfig.teleportAsyncOnHighVelocity)
++                    this.teleportAsync((ServerLevel) this.level(), this.position().add(vec3d1),
++                                       this.getYRot(), this.getXRot(),
++                                       null, PlayerTeleportEvent.TeleportCause.UNKNOWN,
++                                       Entity.TELEPORT_FLAG_LOAD_CHUNK | Entity.TELEPORT_FLAG_TELEPORT_PASSENGERS,
++                                       null
++                    );
++                    else LOGGER.error("High velocity entity caused off-main setPos: ", e);
++                }
++                // Kaiiju end
+             }
+ 
+             this.level().getProfiler().pop();
+@@ -3869,13 +3882,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         // check for same region
+         if (destination == this.level()) {
+             Vec3 currPos = this.position();
+-            if (
+-                destination.regioniser.getRegionAtUnsynchronised(
+-                    io.papermc.paper.util.CoordinateUtils.getChunkX(currPos), io.papermc.paper.util.CoordinateUtils.getChunkZ(currPos)
+-                ) == destination.regioniser.getRegionAtUnsynchronised(
+-                    io.papermc.paper.util.CoordinateUtils.getChunkX(pos), io.papermc.paper.util.CoordinateUtils.getChunkZ(pos)
+-                )
+-            ) {
++            // Kaiiju start - We shouldn't teleport when regions are null
++            io.papermc.paper.threadedregions.ThreadedRegionizer.ThreadedRegion<io.papermc.paper.threadedregions.TickRegions.TickRegionData,
++                                                                               io.papermc.paper.threadedregions.TickRegions.TickRegionSectionData>
++            currRegion = destination.regioniser.getRegionAtUnsynchronised(io.papermc.paper.util.CoordinateUtils.getChunkX(currPos), io.papermc.paper.util.CoordinateUtils.getChunkZ(currPos));
++            io.papermc.paper.threadedregions.ThreadedRegionizer.ThreadedRegion<io.papermc.paper.threadedregions.TickRegions.TickRegionData,
++                                                                               io.papermc.paper.threadedregions.TickRegions.TickRegionSectionData>
++            destRegion = destination.regioniser.getRegionAtUnsynchronised(io.papermc.paper.util.CoordinateUtils.getChunkX(pos), io.papermc.paper.util.CoordinateUtils.getChunkZ(pos));
++            if (currRegion == destRegion && currRegion != null) {
++            // Kaiiju end
+                 EntityTreeNode passengerTree = this.detachPassengers();
+                 // Note: The client does not accept position updates for controlled entities. So, we must
+                 // perform a lot of tracker updates here to make it all work out.

patches/server/0041-Add-back-worldborder-command.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 9 Jul 2023 19:17:40 +0300
+Subject: [PATCH] Add back worldborder command
+
+
+diff --git a/src/main/java/net/minecraft/commands/Commands.java b/src/main/java/net/minecraft/commands/Commands.java
+index 681cd79ce24fe5d952e987d46e2fd8df07a0f8a1..68af43ed4d667648df0e45ffc899d3e4b7b1a69d 100644
+--- a/src/main/java/net/minecraft/commands/Commands.java
++++ b/src/main/java/net/minecraft/commands/Commands.java
+@@ -199,7 +199,7 @@ public class Commands {
+         TitleCommand.register(this.dispatcher);
+         //TriggerCommand.register(this.dispatcher); // Folia - region threading - TODO later
+         WeatherCommand.register(this.dispatcher);
+-        //WorldBorderCommand.register(this.dispatcher); // Folia - region threading - TODO later
++        WorldBorderCommand.register(this.dispatcher); // Folia - region threading - TODO later // Kaiiju
+         if (JvmProfiler.INSTANCE.isAvailable()) {
+             JfrCommand.register(this.dispatcher);
+         }

patches/server/0042-Add-back-data-command.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Sofiane H. Djerbi" <46628754+kugge@users.noreply.github.com>
+Date: Sun, 9 Jul 2023 19:18:42 +0300
+Subject: [PATCH] Add back data command
+
+
+diff --git a/src/main/java/net/minecraft/commands/Commands.java b/src/main/java/net/minecraft/commands/Commands.java
+index 68af43ed4d667648df0e45ffc899d3e4b7b1a69d..44576310cc5b89c287b0ab7ba1a99d76b67f33dd 100644
+--- a/src/main/java/net/minecraft/commands/Commands.java
++++ b/src/main/java/net/minecraft/commands/Commands.java
+@@ -148,7 +148,7 @@ public class Commands {
+         ClearInventoryCommands.register(this.dispatcher, commandRegistryAccess);
+         //CloneCommands.register(this.dispatcher, commandRegistryAccess); // Folia - region threading - TODO
+         DamageCommand.register(this.dispatcher, commandRegistryAccess);
+-        //DataCommands.register(this.dispatcher); // Folia - region threading - TODO
++        DataCommands.register(this.dispatcher); // Folia - region threading - TODO // Kaiiju
+         //DataPackCommand.register(this.dispatcher); // Folia - region threading - TODO
+         //DebugCommand.register(this.dispatcher); // Folia - region threading - TODO
+         DefaultGameModeCommands.register(this.dispatcher);

patches/server/0044-Global-event-synchronization.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xymb <xymb@endcrystal.me>
+Date: Mon, 28 Aug 2023 16:57:55 +0200
+Subject: [PATCH] Global event synchronization
+
+
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+index 7ae19ea532ee0d15774466899d33cb1f130bd9a7..dd6a9ca1c6a2feada31829d0c8ada4e67fdf0cf6 100644
+--- a/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
++++ b/src/main/java/dev/kaiijumc/kaiiju/KaiijuConfig.java
+@@ -248,8 +248,10 @@ public class KaiijuConfig {
+     }
+ 
+     public static boolean disableEnsureTickThreadChecks = false;
++    public static boolean globalEventSynchronization = false;
+ 
+     private static void unsupportedSettings() {
+         disableEnsureTickThreadChecks = getBoolean("unsupported.disable-ensure-tick-thread-checks", disableEnsureTickThreadChecks);
++        globalEventSynchronization = getBoolean("unsupported.global-event-synchronization", globalEventSynchronization);
+     }
+ }
+diff --git a/src/main/java/dev/kaiijumc/kaiiju/lock/GlobalPluginSynchronizer.java b/src/main/java/dev/kaiijumc/kaiiju/lock/GlobalPluginSynchronizer.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..406b241c8d4998b9977a43b8c1b628c7a27a927d
+--- /dev/null
++++ b/src/main/java/dev/kaiijumc/kaiiju/lock/GlobalPluginSynchronizer.java
+@@ -0,0 +1,5 @@
++package dev.kaiijumc.kaiiju.lock;
++
++public class GlobalPluginSynchronizer {
++    public static final Object lock = new Object();
++}
+diff --git a/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java b/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
+index d0f6d4e6ab3a7a4bd6cb8e27c90c7c7300f204a5..03b8f704de1e9a798391297d3daf3c49bf599a56 100644
+--- a/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
++++ b/src/main/java/io/papermc/paper/plugin/manager/PaperEventManager.java
+@@ -58,6 +58,13 @@ class PaperEventManager {
+             }
+ 
+             try {
++                // Kaiiju start - Global Event Synchronization
++                if (dev.kaiijumc.kaiiju.KaiijuConfig.globalEventSynchronization) {
++                    synchronized (dev.kaiijumc.kaiiju.lock.GlobalPluginSynchronizer.lock) {
++                        registration.callEvent(event);
++                    }
++                } else
++                // Kaiiju end
+                 registration.callEvent(event);
+             } catch (AuthorNagException ex) {
+                 Plugin plugin = registration.getPlugin();