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 7a88a81400705a8a1fb234e50528818b7cadc5d6..33b88cf239eed6af6ea03ab6bbeb133aa6443af1 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1445,7 +1445,10 @@ 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 bed136477493365d62d1b82e8f7802513a394991..a2ab2691c1727ec30c22c0a6e5a6b78da556df19 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -346,6 +346,7 @@ public class ServerPlayer extends Player {
     // Paper start - optimise chunk tick iteration
     public double lastEntitySpawnRadiusSquared = -1.0;
     // Paper end - optimise chunk tick iteration
+    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 549d4c45d072e95b741ceb79779cd8fac65bf185..bafd9e135a38d78e7a040c744afe46a3cc96bc52 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -2999,6 +2999,18 @@ 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() {