Add EntityCollectionUtil with thread-local reusable lists

gale-server/minecraft-patches/sources/net/minecraft/world/level/Level.java.patch

@@ -288,7 +288,7 @@
          this.tickingBlockEntities = true;
          if (!this.pendingBlockEntityTickers.isEmpty()) {
              this.blockEntityTickers.addAll(this.pendingBlockEntityTickers);
-@@ -2127,6 +_,13 @@
+@@ -2127,6 +_,22 @@
      public BiomeManager getBiomeManager() {
          return this.biomeManager;
      }
@@ -300,5 +300,18 @@
 +    }
 +    // Gale end - Cache - BiomeManager.getBiome()
 
++    // Gale start - use reusable entity list
++    @Override
++    public List<Entity> getEntities(@Nullable Entity except, AABB area) {
++        List<Entity> list = org.galemc.gale.util.entity.EntityCollectionUtil.getEntityList();
++        this.getEntities().get(net.minecraft.world.level.entity.EntityTypeTest.forClass(Entity.class), area, (net.minecraft.util.AbortableIterationConsumer<Entity>) entity -> {
++            if (entity != except && !entity.isSpectator()) {
++                list.add(entity);
++            }
++            return net.minecraft.util.AbortableIterationConsumer.Continuation.CONTINUE;
++        });
++        return list;
++    }
++    // Gale end - use reusable entity list
      public final boolean isDebug() {
          return this.isDebug;

gale-server/src/main/java/org/galemc/gale/util/entity/EntityCollectionUtil.java

@@ -0,0 +1,19 @@
+package org.galemc.gale.util.entity;
+
+import java.util.ArrayList;
+import java.util.List;
+import net.minecraft.world.entity.Entity;
+
+public final class EntityCollectionUtil {
+
+    private static final int EXPECTED_ENTITIES = 64;
+
+    private static final List<Entity> ENTITY_LIST = new ArrayList<>(EXPECTED_ENTITIES);
+
+    private EntityCollectionUtil() {}
+
+    public static List<Entity> getEntityList() {
+        ENTITY_LIST.clear();
+        return ENTITY_LIST;
+    }
+}