Reduce allocation in unlistened spawn events

shiroha-server/minecraft-patches/features/0031-Reduce-allocation-in-unlistened-spawn-events.patch

@@ -0,0 +1,86 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: NanaChiyo0721 <nanachiyo0721@163.com>
+Date: Fri, 7 Aug 2026 14:07:55 +0800
+Subject: [PATCH] Reduce allocation in unlistened spawn events
+
+
+diff --git a/net/minecraft/util/SpawnUtil.java b/net/minecraft/util/SpawnUtil.java
+index 625ee78221324ce4959770fe36e4334d057cbc74..ed0e28761b1f14b7907e8e6bfac0690aa2d0b962 100644
+--- a/net/minecraft/util/SpawnUtil.java
++++ b/net/minecraft/util/SpawnUtil.java
+@@ -57,6 +57,7 @@ public class SpawnUtil {
+                 && moveToPossibleSpawnPosition(level, spawnRangeY, searchPos, strategy)
+                 && (!checkCollisions || level.noCollision(entityType.getSpawnAABB(searchPos.getX() + 0.5, searchPos.getY(), searchPos.getZ() + 0.5)))) {
+                 // Paper start - PreCreatureSpawnEvent
++                if (com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent.getHandlerList().getRegisteredListeners().length != 0) { // Shiroha - Reduce allocation in unlistened spawn events
+                 final com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+                     org.bukkit.craftbukkit.util.CraftLocation.toBukkit(start, level),
+                     org.bukkit.craftbukkit.entity.CraftEntityType.minecraftToBukkit(entityType),
+@@ -71,6 +72,7 @@ public class SpawnUtil {
+                     }
+                     break;
+                 }
++                } // Shiroha - Reduce allocation in unlistened spawn events
+                 // Paper end - PreCreatureSpawnEvent
+                 T mob = (T)entityType.create(level, null, searchPos, spawnReason, false, false);
+                 if (mob != null) {
+diff --git a/net/minecraft/world/entity/EntityType.java b/net/minecraft/world/entity/EntityType.java
+index 6efaa78faca15c7a48bdffb24480d1bac29f3ba8..93f94d5b8f66b97bfd6a2fe3a35bbcbcfb18d699 100644
+--- a/net/minecraft/world/entity/EntityType.java
++++ b/net/minecraft/world/entity/EntityType.java
+@@ -230,6 +230,7 @@ public class EntityType<T extends Entity> implements EntityTypeTest<Entity, T>,
+     ) {
+         // CraftBukkit end
+         // Paper start - PreCreatureSpawnEvent
++        if (com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent.getHandlerList().getRegisteredListeners().length != 0) { // Shiroha - Reduce allocation in unlistened spawn events
+         com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+             org.bukkit.craftbukkit.util.CraftLocation.toBukkit(spawnPos, level),
+             org.bukkit.craftbukkit.entity.CraftEntityType.minecraftToBukkit(this),
+@@ -238,6 +239,7 @@ public class EntityType<T extends Entity> implements EntityTypeTest<Entity, T>,
+         if (!event.callEvent()) {
+             return null;
+         }
++        } // Shiroha - Reduce allocation in unlistened spawn events
+         // Paper end - PreCreatureSpawnEvent
+         T entity = this.create(level, postSpawnConfig, spawnPos, spawnReason, tryMoveDown, movedUp);
+         if (entity != null) {
+diff --git a/net/minecraft/world/level/BaseSpawner.java b/net/minecraft/world/level/BaseSpawner.java
+index 2f89a9145902e514089924462003709f256ac3f4..6ef921e08c52e9611e261066724d8893b531fcd8 100644
+--- a/net/minecraft/world/level/BaseSpawner.java
++++ b/net/minecraft/world/level/BaseSpawner.java
+@@ -140,6 +140,7 @@ public abstract class BaseSpawner {
+                             }
+ 
+                             // Paper start - PreCreatureSpawnEvent
++                            if (com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent.getHandlerList().getRegisteredListeners().length != 0) { // Shiroha - Reduce allocation in unlistened spawn events
+                             com.destroystokyo.paper.event.entity.PreSpawnerSpawnEvent event = new com.destroystokyo.paper.event.entity.PreSpawnerSpawnEvent(
+                                 org.bukkit.craftbukkit.util.CraftLocation.toBukkit(spawnPos, level),
+                                 org.bukkit.craftbukkit.entity.CraftEntityType.minecraftToBukkit(entityType.get()),
+@@ -152,6 +153,7 @@ public abstract class BaseSpawner {
+                                 }
+                                 continue;
+                             }
++                            } // Shiroha - Reduce allocation in unlistened spawn events
+                             // Paper end - PreCreatureSpawnEvent
+ 
+                             Entity entity = EntityType.loadEntityRecursive(input, level, EntitySpawnReason.SPAWNER, e -> {
+diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
+index 500dcbe924fca160bd673592e1aba384f6eb9ed2..ecdd27be9ac86c396d1cf430356637ee237cf368 100644
+--- a/net/minecraft/world/level/NaturalSpawner.java
++++ b/net/minecraft/world/level/NaturalSpawner.java
+@@ -391,6 +391,7 @@ public final class NaturalSpawner {
+     ) {
+         // Paper start - PreCreatureSpawnEvent
+         EntityType<?> type = currentSpawnData.type();
++        if (com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent.getHandlerList().getRegisteredListeners().length != 0) { // Shiroha - Reduce allocation in unlistened spawn events
+         com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent event = new com.destroystokyo.paper.event.entity.PreCreatureSpawnEvent(
+                 org.bukkit.craftbukkit.util.CraftLocation.toBukkit(pos, level),
+                 org.bukkit.craftbukkit.entity.CraftEntityType.minecraftToBukkit(type), org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.NATURAL
+@@ -401,6 +402,7 @@ public final class NaturalSpawner {
+             }
+             return PreSpawnStatus.CANCELLED;
+         }
++        } // Shiroha - Reduce allocation in unlistened spawn events
+         final boolean success = type.getCategory() != MobCategory.MISC
+         // Paper end - PreCreatureSpawnEvent
+             && (type.canSpawnFarFromPlayer() || !(nearestPlayerDistanceSqr > type.getCategory().getDespawnDistance() * type.getCategory().getDespawnDistance()))

shiroha-server/minecraft-patches/features/0034-Kaiiju-Entity-tick-and-removal-limiter.patch

@@ -54,7 +54,7 @@ index 878a00bb28223b2719b4ce7c5d715e0346364770..e89d2af26ffe83e71cfb733cfdbec542
              if (this.paperConfig().unsupportedSettings.ticking.blockEntities) { // Paper - option to disable ticking
              profiler.popPush("blockEntities");
 diff --git a/net/minecraft/world/entity/EntityType.java b/net/minecraft/world/entity/EntityType.java
-index 6efaa78faca15c7a48bdffb24480d1bac29f3ba8..31619890f1bd4f458b6f9a31fac8cefaafe09e8e 100644
+index 93f94d5b8f66b97bfd6a2fe3a35bbcbcfb18d699..c164e3fa59b47d58c57d65d4330df3a2b31795c6 100644
 --- a/net/minecraft/world/entity/EntityType.java
 +++ b/net/minecraft/world/entity/EntityType.java
 @@ -73,6 +73,7 @@ public class EntityType<T extends Entity> implements EntityTypeTest<Entity, T>,