From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dreeam <61569423+Dreeam-qwq@users.noreply.github.com>
Date: Fri, 24 May 2024 19:03:02 +0800
Subject: [PATCH] Tracking Optimize: Skip redundant useless packets

Removed since 1.21, not good, useless

diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index c2db18cbb1230588e6b1783dc51c69ed3ccd2e34..71a7b36f7ab1d0743591495a45d8a153cee138e8 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -418,23 +418,34 @@ public class ServerEntity {
         // Paper end
     }
 
+    // Leaf start - Tracking Optimize - Skip redundant useless packets
+    private List<SynchedEntityData.DataValue<?>> lastSendDirtyData = new ArrayList<>();
+    private Set<AttributeInstance> lastSendDirtyAttributes = com.google.common.collect.Sets.newConcurrentHashSet();
+    // Leaf end - Tracking Optimize - Skip redundant useless packets
     private void sendDirtyEntityData() {
         SynchedEntityData datawatcher = this.entity.getEntityData();
         List<SynchedEntityData.DataValue<?>> list = datawatcher.packDirty();
 
         if (list != null) {
             this.trackedDataValues = datawatcher.getNonDefaultValues();
+            // Leaf start - Tracking Optimize - Skip redundant useless packets
+            if (!lastSendDirtyData.equals(list)) {
             // Leaf start - petal - sync
             ((ServerLevel) this.entity.level()).chunkSource.chunkMap.runOnTrackerMainThread(() ->
                 this.broadcastAndSend(new ClientboundSetEntityDataPacket(this.entity.getId(), list))
             );
             // Leaf end - petal
+                lastSendDirtyData = new ArrayList<>(list);
+            }
+            // Leaf end - Tracking Optimize - Skip redundant useless packets
         }
 
         if (this.entity instanceof LivingEntity) {
             Set<AttributeInstance> set = ((LivingEntity) this.entity).getAttributes().getDirtyAttributes();
 
             if (!set.isEmpty()) {
+                // Leaf start - Tracking Optimize - Skip redundant useless packets
+                if (!lastSendDirtyAttributes.equals(set)) {
                 // Leaf start - petal - sync
                 final Set<AttributeInstance> copy = com.google.common.collect.Sets.newConcurrentHashSet(set);
                 ((ServerLevel) this.entity.level()).chunkSource.chunkMap.runOnTrackerMainThread(() -> {
@@ -447,6 +458,9 @@ public class ServerEntity {
 
                 });
                 // Leaf end - petal
+                    lastSendDirtyAttributes = com.google.common.collect.Sets.newConcurrentHashSet(set);
+                }
+                // Leaf end - Tracking Optimize - Skip redundant useless packets
             }
 
             ((LivingEntity) this.entity).getAttributes().clearDirtyAttributes(); // Leaf