Leaf/leaf-server/minecraft-patches/features/0148-Remove-stream-in-entity-mountedOrDismounted-changes-.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dreeam <61569423+Dreeam-qwq@users.noreply.github.com>
Date: Fri, 4 Apr 2025 17:12:53 -0400
Subject: [PATCH] Remove stream in entity mountedOrDismounted changes update


diff --git a/net/minecraft/server/level/ServerEntity.java b/net/minecraft/server/level/ServerEntity.java
index 4859433b0a4160e7ee0af4c2e750956f6ca07649..d605c4da4475fdc47a6d0c90fbca2713fc9d8fef 100644
--- a/net/minecraft/server/level/ServerEntity.java
+++ b/net/minecraft/server/level/ServerEntity.java
@@ -118,7 +118,19 @@ public class ServerEntity {
         // Paper end - optimise collisions
         List<Entity> passengers = this.entity.getPassengers();
         if (!passengers.equals(this.lastPassengers)) {
-            List<UUID> list = this.mountedOrDismounted(passengers).map(Entity::getUUID).toList();
+            // Leaf start - Remove stream in entity mountedOrDismounted changes update
+            List<UUID> list = new ArrayList<>();
+            for (Entity entity : this.lastPassengers) {
+                if (!passengers.contains(entity)) {
+                    list.add(entity.getUUID());
+                }
+            }
+            for (Entity entity : passengers) {
+                if (!this.lastPassengers.contains(entity)) {
+                    list.add(entity.getUUID());
+                }
+            }
+            // Leaf end - Remove stream in entity mountedOrDismounted changes update
             this.broadcastWithIgnore.accept(new ClientboundSetPassengersPacket(this.entity), list);
             // Paper start - Allow riding players
             if (this.entity instanceof ServerPlayer player) {