Paper/patches/server/0365-Tracking-Range-Improvements.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kickash32 <kickash32@gmail.com>
Date: Sat, 21 Dec 2019 15:22:09 -0500
Subject: [PATCH] Tracking Range Improvements

Sets tracking range of watermobs to animals instead of misc and simplifies code

Also ignores Enderdragon, defaulting it to Mojang's setting

diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index a3806b29907468f690e386d9147ae18f71f688ef..8de14a3078017c59b7e3a37894c6c250fa8558b0 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1867,6 +1867,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
             while (iterator.hasNext()) {
                 Entity entity = (Entity) iterator.next();
                 int j = entity.getType().clientTrackingRange() * 16;
+                j = org.spigotmc.TrackingRange.getEntityTrackingRange(entity, j); // Paper
 
                 if (j > i) {
                     i = j;
diff --git a/src/main/java/org/spigotmc/TrackingRange.java b/src/main/java/org/spigotmc/TrackingRange.java
index 2d5cb8991e368372f1ab227735aac0c060deb199..55ce69b5fe097841d00ef5c241459dce9bb0d4db 100644
--- a/src/main/java/org/spigotmc/TrackingRange.java
+++ b/src/main/java/org/spigotmc/TrackingRange.java
@@ -6,7 +6,6 @@ import net.minecraft.world.entity.ExperienceOrb;
 import net.minecraft.world.entity.decoration.ItemFrame;
 import net.minecraft.world.entity.decoration.Painting;
 import net.minecraft.world.entity.item.ItemEntity;
-import net.minecraft.world.entity.monster.Ghast;
 
 public class TrackingRange
 {
@@ -29,26 +28,26 @@ public class TrackingRange
         if ( entity instanceof ServerPlayer )
         {
             return config.playerTrackingRange;
-        } else if ( entity.activationType == ActivationRange.ActivationType.MONSTER || entity.activationType == ActivationRange.ActivationType.RAIDER )
-        {
-            return config.monsterTrackingRange;
-        } else if ( entity instanceof Ghast )
-        {
-            if ( config.monsterTrackingRange > config.monsterActivationRange )
-            {
+        // Paper start - Simplify and set water mobs to animal tracking range
+        }
+        switch (entity.activationType) {
+            case RAIDER:
+            case MONSTER:
+            case FLYING_MONSTER:
                 return config.monsterTrackingRange;
-            } else
-            {
-                return config.monsterActivationRange;
-            }
-        } else if ( entity.activationType == ActivationRange.ActivationType.ANIMAL )
-        {
-            return config.animalTrackingRange;
-        } else if ( entity instanceof ItemFrame || entity instanceof Painting || entity instanceof ItemEntity || entity instanceof ExperienceOrb )
+            case WATER:
+            case VILLAGER:
+            case ANIMAL:
+                return config.animalTrackingRange;
+            case MISC:
+        }
+        if ( entity instanceof ItemFrame || entity instanceof Painting || entity instanceof ItemEntity || entity instanceof ExperienceOrb )
+        // Paper end
         {
             return config.miscTrackingRange;
         } else
         {
+            if (entity instanceof net.minecraft.world.entity.boss.enderdragon.EnderDragon) return ((net.minecraft.server.level.ServerLevel)(entity.getCommandSenderWorld())).getChunkSource().chunkMap.getEffectiveViewDistance(); // Paper - enderdragon is exempt
             return config.otherTrackingRange;
         }
     }