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 925809750c80a74d80255f6b611c486915530b34..0ba22484917ebb88a23a33c0ab5a171ae4630c59 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1264,7 +1264,10 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
                 double vec3d_dz = player.getZ() - this.entity.getZ();
                 // Paper end - remove allocation of Vec3D here
                 int i = ChunkMap.this.getPlayerViewDistance(player);
-                double d0 = (double) Math.min(this.getEffectiveRange(), i * 16);
+                // Sakura start - entity tracking range modifier
+                double visibleRange = (double) this.getEffectiveRange() * player.trackingRangeModifier;
+                double d0 = (double) Math.min(visibleRange, i * 16);
+                // 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) && ChunkMap.this.isChunkTracked(player, this.entity.chunkPosition().x, this.entity.chunkPosition().z);
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 95b582042133624a47c67719f86990862a539030..62783c4c951089cbc00073b5945ce56ec7dbae7a 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -333,6 +333,7 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player imple
         return this.viewDistanceHolder;
     }
     // Paper end - rewrite chunk system
+    public double trackingRangeModifier = 1.0; // Sakura - entity tracking range modifier
 
     public ServerPlayer(MinecraftServer server, ServerLevel world, GameProfile profile, ClientInformation clientOptions) {
         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 e340694c74add2f0e06b3e8bc9cc0bd50699e119..817b7248e4e055a66d1edbdd3d6e2ce854ff9542 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3018,6 +3018,18 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return (this.getHandle().requestedViewDistance() == 0) ? Bukkit.getViewDistance() : this.getHandle().requestedViewDistance();
     }
 
+    // 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() {