Add entity tracker min Y distance config option (#9406)

patches/server/0005-Paper-config-files.patch

@@ -1481,10 +1481,10 @@ index 0000000000000000000000000000000000000000..f0d4ec73bc8872a85e34f5c6b4d342e7
 +}
 diff --git a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..d47c57afafc01e25b965f1844938b2516a7bd031
+index 0000000000000000000000000000000000000000..4989f99c0d330da52aeaca5df08edfbd47b5bf3c
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
-@@ -0,0 +1,484 @@
+@@ -0,0 +1,523 @@
 +package io.papermc.paper.configuration;
 +
 +import com.google.common.collect.HashBasedTable;
@@ -1520,6 +1520,8 @@ index 0000000000000000000000000000000000000000..d47c57afafc01e25b965f1844938b251
 +import net.minecraft.core.registries.BuiltInRegistries;
 +import net.minecraft.resources.ResourceLocation;
 +import net.minecraft.world.Difficulty;
++import net.minecraft.world.entity.Display;
++import net.minecraft.world.entity.Entity;
 +import net.minecraft.world.entity.EntityType;
 +import net.minecraft.world.entity.MobCategory;
 +import net.minecraft.world.entity.monster.Vindicator;
@@ -1530,6 +1532,7 @@ index 0000000000000000000000000000000000000000..d47c57afafc01e25b965f1844938b251
 +import net.minecraft.world.level.levelgen.feature.ConfiguredFeature;
 +import org.slf4j.Logger;
 +import org.spigotmc.SpigotWorldConfig;
++import org.spigotmc.TrackingRange;
 +import org.spongepowered.configurate.objectmapping.ConfigSerializable;
 +import org.spongepowered.configurate.objectmapping.meta.Required;
 +import org.spongepowered.configurate.objectmapping.meta.Setting;
@@ -1773,6 +1776,42 @@ index 0000000000000000000000000000000000000000..d47c57afafc01e25b965f1844938b251
 +                }
 +            }
 +        }
++
++        public TrackingRangeY trackingRangeY;
++
++        public class TrackingRangeY extends ConfigurationPart {
++            public boolean enabled = false;
++            public IntOr.Default player = IntOr.Default.USE_DEFAULT;
++            public IntOr.Default animal = IntOr.Default.USE_DEFAULT;
++            public IntOr.Default monster = IntOr.Default.USE_DEFAULT;
++            public IntOr.Default misc = IntOr.Default.USE_DEFAULT;
++            public IntOr.Default display = IntOr.Default.USE_DEFAULT;
++            public IntOr.Default other = IntOr.Default.USE_DEFAULT;
++
++            public int get(Entity entity, int def) {
++                if (entity instanceof Display) return display.or(def);
++                
++                switch (TrackingRange.getTrackingRangeType(entity)) {
++                    case PLAYER -> {
++                        return player.or(def);
++                    }
++                    case ANIMAL -> {
++                        return animal.or(def);
++                    }
++                    case MONSTER -> {
++                        return monster.or(def);
++                    }
++                    case MISC -> {
++                        return misc.or(def);
++                    }
++                    case ENDERDRAGON -> {
++                        return -1; // Ender dragon is exempt
++                    }
++                }
++                
++                return other.or(def);
++            }
++        }
 +    }
 +
 +    public Lootables lootables;

patches/server/1013-Configurable-entity-tracking-range-by-Y-coordinate.patch

@@ -0,0 +1,27 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: ruViolence <78062896+ruViolence@users.noreply.github.com>
+Date: Tue, 27 Jun 2023 15:38:18 +0800
+Subject: [PATCH] Configurable entity tracking range by Y coordinate
+
+Options to configure entity tracking by Y coordinate, also for each entity category.
+
+diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
+index a4bf4ed615653ce30d2416a62e680d74e87b53fa..65d947df910d60f478e7a449eb161e5105e2c0c9 100644
+--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
++++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
+@@ -1554,6 +1554,15 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+                 double d1 = vec3d_dx * vec3d_dx + vec3d_dz * vec3d_dz; // Paper
+                 double d2 = d0 * d0;
+                 boolean flag = d1 <= d2 && this.entity.broadcastToPlayer(player);
++                // Paper start - check Y
++                if (flag && level.paperConfig().entities.trackingRangeY.enabled) {
++                    double rangeY = level.paperConfig().entities.trackingRangeY.get(this.entity, -1);
++                    if (rangeY != -1) {
++                        double vec3d_dy = player.getY() - this.entity.getY();
++                        flag = vec3d_dy * vec3d_dy <= rangeY * rangeY;
++                    }
++                }
++                // Paper end - check Y
+ 
+                 // CraftBukkit start - respect vanish API
+                 if (!player.getBukkitEntity().canSee(this.entity.getBukkitEntity())) {