From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samsuik <kfian294ma4@gmail.com>
Date: Tue, 18 Jun 2024 13:34:55 +0100
Subject: [PATCH] Entity tracking range modifier


diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index ee7871ddd36b20206ef66372b04861d100601341..ed83c97b4859e1061f09bc6db6a36ae652d45c71 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -2351,7 +2351,10 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
                 double vec3d_dx = player.getX() - this.entity.getX();
                 double vec3d_dz = player.getZ() - this.entity.getZ();
                 // Paper end - remove allocation of Vec3D here
-                double d0 = (double) Math.min(this.getEffectiveRange(), io.papermc.paper.chunk.PlayerChunkLoader.getSendViewDistance(player) * 16); // Paper - per player view distance
+                // Sakura start - entity tracking range modifier
+                double visibleRange = (double) this.getEffectiveRange() * player.trackingRangeModifier;
+                double d0 = (double) Math.min(visibleRange, io.papermc.paper.chunk.PlayerChunkLoader.getSendViewDistance(player) * 16); // Paper - per player view distance
+                // Sakura end - entity tracking range modifier
                 double d1 = vec3d_dx * vec3d_dx + vec3d_dz * vec3d_dz; // Paper
                 double d2 = d0 * d0;
                 boolean flag = d1 <= d2 && this.entity.broadcastToPlayer(player);
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 8aea11619f256bcfd91cf9af968bee4daf0f3381..986ff99fe0e4d3dc080159a514044ffe0c846d11 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -258,6 +258,7 @@ public class ServerPlayer extends Player {
     public double lastEntitySpawnRadiusSquared; // Paper - optimise isOutsideRange, this field is in blocks
     public final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> cachedSingleHashSet; // Paper
     public org.bukkit.event.player.PlayerQuitEvent.QuitReason quitReason = null; // Paper - there are a lot of changes to do if we change all methods leading to the event
+    public double trackingRangeModifier = 1.0; // Sakura - entity tracking range modifier
 
     public ServerPlayer(MinecraftServer server, ServerLevel world, GameProfile profile) {
         super(world, world.getSharedSpawnPos(), world.getSharedSpawnAngle(), profile);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index f16ba5860484de0e211d954436d2e5106a651808..3461634deff779307be4e6a94d19cfcb5b3cbaae 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -2370,6 +2370,18 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return (this.getHandle().clientViewDistance == null) ? Bukkit.getViewDistance() : this.getHandle().clientViewDistance;
     }
 
+    // Sakura start - entity tracking range modifier
+    @Override
+    public double getTrackingRangeModifier() {
+        return this.getHandle().trackingRangeModifier * 100.0;
+    }
+
+    @Override
+    public void setTrackingRangeModifier(double mod) {
+        this.getHandle().trackingRangeModifier = mod / 100.0;
+    }
+    // Sakura end - entity tracking range modifier
+
     // Paper start
     @Override
     public java.util.Locale locale() {